Installing PROVOXr
r System
Cabinets and Console Tables
Installation Manual
PN:CP7005
Revision C — March 2002
This manual supercedes the issue dated May 1999.
D3P00631302
See CE Statement in Section 1
DOCVUE, ENVOX, Fisher-Rosemount, Managing The Process Better, PROVUE, and PROVOX, are
marks of one of the Fisher-Rosemount group of companies.
All other marks are the property of their respective owners.
ã 1999, 2002 Fisher-Rosemount Systems, Inc. All rights reserved.
Printed in USA
The contents of this publication are presented for informational purposes only, and while every effort
has been made to ensure their accuracy, they are not to be construed as warranties or guarantees,
express or implied, regarding the products or services described herein or their use or applicability. We
reserve the right to modify or improve the designs or specifications of such products at any time without
notice.
Installing PROVOXr System Cabinets and Console Tables
(Revision C — March 2002)
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(Revision C — March 2002)
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Installing PROVOXr System Cabinets and Console Tables
(Revision C — March 2002)
Contents
v
Contents
1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2
2.1
2.2
2.3
2.4
2.5
2.6
2.7
3
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.9.1
3.9.2
3.9.3
3.10
3.10.1
3.10.2
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product Versions This Manual Supports . . . . . . . . . . . . . . . . . . . .
CE Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Structure of this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manual Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warnings, Cautions, and Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Related Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electronic Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Where to Find Answers for Product and Document Questions .
1
1
1
2
2
3
3
4
4
Type CP7005 Half-Depth Cabinet . . . . . . . . . . . . . . . . . . . . .
5
Physical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cabinet Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DC Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shield Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Field Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6
7
8
9
9
10
10
Type CP7010 System Cabinet . . . . . . . . . . . . . . . . . . . . . . . .
11
Physical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AC Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cabinet and AC Power Grounding . . . . . . . . . . . . . . . . . . . . . . . . .
DC Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shield Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Field Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Conditioner Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
High Humidity Environments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Top-Mounted Unit Condensate Handling . . . . . . . . . . . . . . . . . .
Side-Mounted Unit Condensate Handling . . . . . . . . . . . . . . . . .
12
14
15
19
20
21
21
22
22
23
23
23
24
24
24
vi
Contents
4
4.1
4.2
4.3
4.3.1
4.3.2
4.3.3
4.4
Installing PROVOXr System Cabinets and Console Tables
(Revision C — March 2002)
CP7820-Series Console Tables . . . . . . . . . . . . . . . . . . . . . . .
25
Physical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AC Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Determining Wire Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Balancing the AC Power Load . . . . . . . . . . . . . . . . . . . . . . . . . .
Wiring Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equipment Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
26
28
28
29
31
32
34
Installing PROVOXr System Cabinets and Console Tables
(Revision C — March 2002)
Contents
vii
Figures
Figure 2-1.
Figure 2-2.
Figure 3-1.
Figure 3-2.
Figure 3-3.
Figure 3-4.
Figure 3-5.
Figure 3-6.
Figure 3-7.
Figure 4-1.
Figure 4-2.
Figure 4-3.
Figure 4-4.
Figure 4-5.
Figure 4-6.
Figure 4-7.
Cabinet Outline Dimensions . . . . . . . . . . . . . . . . . . . . . . . . .
Plant Ground System Example . . . . . . . . . . . . . . . . . . . . . . .
Example of Factory Assembled Cabinet Arrangements . .
Type CP7010 System Cabinet Dimensions . . . . . . . . . . . .
AC Power Cable Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Access Panel Mounting Hardware Sequence . . . . . . . . . .
Top Entry Access Panels and Fan Cutout Locations . . . .
Bottom Entry Access Panels . . . . . . . . . . . . . . . . . . . . . . . . .
Plant Ground System Example . . . . . . . . . . . . . . . . . . . . . . .
Console Table Showing Desktop Operator Station
and Typical Console Electronics . . . . . . . . . . . . . . . . . . . . .
Lower Rear Inside View of Console Tables with
Power Strip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Outline Dimensions of Console Tables . . . . . . . . . . . . . . . .
Interior Dimensions For Equipment Mounting . . . . . . . . . .
Typical Console AC Power Wiring . . . . . . . . . . . . . . . . . . . .
Typical AC Power Conduit Connections . . . . . . . . . . . . . . .
Utility Power Strip and Wire Identification . . . . . . . . . . . . . .
6
8
11
13
16
17
18
19
19
25
26
27
28
29
33
34
viii
Contents
Installing PROVOXr System Cabinets and Console Tables
(Revision C — March 2002)
Tables
Table 1-1.
Table 4-1.
Type Style Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AC Power Wiring Sizing Guide . . . . . . . . . . . . . . . . . . . . . . . .
2
30
Introduction F Section 1
1
Figure 1-Table 1
1
1
1 Introduction
This document explains how to install the following PROVOXr system
cabinets and console tables:
1.1
J
Type CP7005 Half-Depth Cabinet
J
Type CP7010 System Cabinet
J
CP7820-Series Console Tables
Intended Audience
This manual is intended for plant engineering and installation personnel
who need to know the specific details for installing PROVOX system
cabinets and console tables.
1.2
Product Versions This Manual Supports
This manual supports all versions of the products described herein.
1.3
CE Statement
If you intend to have your PROVOX system certified for compliance to
appropriate European Union directives, the following statement is
extremely important to your ability to achieve that compliance.
This manual describes installation and maintenance procedures for
products which have been tested to be in compliance with appropriate
CE directives. To maintain compliance, these products must be
installed and maintained according to the procedures described in
this document. Failure to follow the procedures may compromise
compliance.
Installing PROVOXr System Cabinets and Console Tables (Revision C — March 2002)
Section 1 F Introduction
2
1.4
Structure of this Manual
This manual contains the following sections and appendixes:
1
Section 1 — Introduction: includes an overview of this manual, the
intended audience, and stylistic and typographical conventions used.
Section 2 — Type CP7005 Half-Depth Cabinet: provides installation
instructions, including wiring and grounding, for the cabinet.
Section 3 — Type CP7010 System Cabinet: provides installation
instructions, including wiring, ac power, grounding, and air conditioning,
for the cabinet.
Section 4 — CP7820-Series Console Tables: provides installation
instructions, including wiring and grounding, for the tables.
1.5
Manual Conventions
This manual uses the following conventions:
J
J
J
Acronyms and Abbreviations — Terms are spelled out the first time
they appear in text. Thereafter, only the acronym or abbreviation is
used. In addition, the glossary defines the acronyms and
abbreviations.
Revision Control — The title page lists the revision level and
printing date of this manual. When the manual is revised, the revision
level and printing date are changed.
References — References to other documents include the name
and catalog number for Fisher-Rosemount Systems manuals.
Table 1-1 describes the type styles this manual uses to distinguish
different kinds of information.
Table 1-1.
Type Style Conventions
When Text Appears
This Way ...
ENVOXr Technical
Reference
It Is ...
The title of a manual.
An object is...
A new term or a word being emphasized.
Do not set...
A word or term given special emphasis so that you do
not miss the idea being presented.
Installing PROVOXr System Cabinets and Console Tables (Revision C — March 2002)
Introduction F Section 1
1.6
3
Warnings, Cautions, and Notes
Warnings, Cautions, and Notes attract attention to essential or critical
information in this manual. The types of information included in each are
explained in the following:
Warning ... All warnings have this form and symbol. Do not disregard
warnings. They are installation, operation, or maintenance
procedures, practices, conditions, statements, and so forth,
which if not strictly observed, may result in personal injury or
loss of life.
Caution ... All cautions have this form and symbol. Do not disregard
cautions. They are installation, operation, or maintenance
procedures, practices, conditions, statements, and so forth,
which if not strictly observed, may result in damage to, or
destruction of, equipment or may cause a long term health
hazard.
Note ... Notes have this form and symbol. Notes contain installation,
operation, or maintenance procedures, practices, conditions,
statements, and so forth, that alert you to important information
which may make your task easier or increase your
understanding.
1.7
Related Documentation
For detailed information on planning a system installation, including
requirements for ac power, system grounding, and adequate system
environment, consult the documents listed below. Use these related
documents to complete the overall system installation planning before
beginning the planning for subsystem installation.
J
Planning the Installation PN1:002, Revision C or later
J
AC and DC Power and Ground Wiring, PN1:003, Revision B or later
J
Signal Wiring and Data Highway Guidelines, PN1:004, Revision C or
later
Installing PROVOXr System Cabinets and Console Tables (Revision C — March 2002)
1
Section 1 F Introduction
4
J
J
1
J
1.8
Preventing Electrostatic Damage, PN1:005, Revision B or later
Environmental Conditions for Instrumentation Systems PN1:006,
Revision C or later
Lightning Protection Guidelines for Instrumentation Systems
PN1:007, Revision B or later
Electronic Documentation
This manual is also available in DOCVUEt Electronic Documentation
which is a CD-ROM set. The CDs contain current and past
Fisher-Rosemount Systems sales literature, manuals, and technical
service bulletins.
DOCVUE documentation runs on OpenVMS, UNIX, and Microsoft
Windows systems with the advantages of full-text searches, menus,
bookmarks, browsing, and point-and-click navigation. We recommend
that you call your Fisher-Rosemount Systems representative or sales
office and find out more about DOCVUE documentation.
1.9
Where to Find Answers for Product and Document
Questions
If you believe that this product is not performing as expected, or if you
have comments about this manual, please contact your
Fisher-Rosemount Systems representative or sales office. You may also
complete and send in the Reader Evaluation Form located in the front of
this manual.
We also appreciate your suggestions on ways to improve any page of
the manual. Please mark your suggestions on a copy of the page and
include it with the evaluation form. Thank you for providing this
information.
Installing PROVOXr System Cabinets and Console Tables (Revision C — March 2002)
Type CP7005 Half-Depth Cabinet F Section 2
5
Figure 2-Table 2
2
2 Type CP7005 Half-Depth Cabinet
The Type CP7005 Half-Depth Cabinet is an equipment enclosure that
houses rack and surface-mounted units used with PROVOXr
Instrumentation Systems. A cabinet consists of the following:
J
Cabinet frame with lifting eyes, leveling feet, and support bracket
J
High temperature sensor
J
Full-length door with keylock, fans, and filters
J
Full-length side panels
J
Full-length back panel
J
Top and bottom panels
J
Full-height EIA mounting rails with vertical cable trays
J
Power bus bar
A rigid, key-locking front door contains a continuous foamed-in gasket
that seals the cabinet when the door is shut. The back panel is
removable to facilitate back-to-back assembly. Full-height 19 inch (483
mm) EIA rails allow mounting of Control I/O termination panels and other
rack-mountable equipment.
Lifting eyes secure the top panel to the cabinet frame and provide
attachment points for lifting. The lifting eyes extend upward 2.25 inches
(57 mm). Leveling feet, mounted on the bottom corners of the cabinet,
have an adjustable range of 1 inch (25.4 mm) minimum to 1.5 inches
(38.1 mm) maximum.
External cabling enters the cabinet from the top or through the bottom
panel. Internally, cables route through horizontal and vertical cable trays
for distribution among the internally mounted instruments. The cabinet is
equipped with a power bus bar to distribute 24 Vdc in the cabinet and
provide a common dc return. The 24 Vdc is user-supplied. The bus bar
also provides a common termination for signal return. The bus bar
connects to a grounding bus bar at the bottom of the cabinet. The
grounding bus bar provides a single point ground for the cabinet. Shield
grounds attach to the cabinet frame.
Installing PROVOXr System Cabinets and Console Tables (Revision C — March 2002)
2
Section 2 F Type CP7005 Half-Depth Cabinet
6
A plinth-type cabinet base is an optional alternative to the leveling feet.
The base raises the cabinet 3.96 inches (100 mm) to facilitate bottom
cable entry and dc power and signal wiring access. This eliminates the
need for raised flooring. The base has easily removed front, back, and
side panels to allow the use of a fork-lift, or other lifting equipment, in
positioning cabinets in the plant. Optional joining kits connect and seal
joined frames to preserve environmental integrity.
2
Fans are mounted in the top section of the door to provide cooling air to
the enclosed devices. The air is drawn through filters located in the
bottom section of the door. A high temperature sensor mounted at the
top of the cabinet frame supplies heat monitoring capability in each
system cabinet.
2.1
Physical Installation
Figure 2-1 shows outline dimensions for the cabinet and the optional
plinth. You may use these dimensions to determine needed floor space
and transportation routes for the cabinets.
82.63
(2098)
85.59
(2174)
79.00
(2006)
31.50
(800)
Plinth
Top View
Cabinet
Top View
8.86
(225)
31.40
(798)
3.96
(100)
31.75
(806)
Cabinet
Front View
Figure 2-1.
Plinth
Front View
INCH
(mm)
10.94
(278)
Cabinet
Side View
Cabinet Outline Dimensions
The narrow construction of the cabinet requires that it be secured at the
top and bottom, allowing front access only. Top-mounted brackets are
supplied for anchoring the cabinet. The cabinets can meet NEMA 12
application standards when equipped with solid top, door fans, and
bottom wire entry.
Installing PROVOXr System Cabinets and Console Tables (Revision C — March 2002)
Type CP7005 Half-Depth Cabinet F Section 2
7
Caution ... Access space between the closed door of a cabinet and a wall
or other obstruction is of primary concern when planning
cabinet installations. The distance between facing cabinets
should be sufficient to allow access with doors open, and also
provide an aisle for personnel movement. It is recommended,
that safety personnel and your Fisher-Rosemount
representative be consulted for assistance in this area.
When planning cabinet installation, calculate the final cabinet dimensions
based on the component parts used. The recommended clearance for
the door is a minimum of 48 inches (1220 mm). Door swing is 31.25
inches (794 mm).
2.2
Electrical Installation
Electrical installation includes providing the following to each cabinet:
J
24 Vdc power
J
System grounding
J
Field wiring
Prepare the electrical installation using the guidelines in the documents
listed in subsection 1.7. These documents provide a basic overview for
understanding the electrical requirements of a PROVOX Instrumentation
System. Requirements pertinent to cabinet installation are discribed in
the following paragraphs. All wiring between instruments installed in
each cabinet is completed at the factory.
To connect the high temperature sensor mounted at the top of the
cabinet frame, connect it to appropriate terminals on a nearby Type
CP6103 System Power Supply Unit, which provides the contacts to
activate an external alarm. The sensor can also connect directly to an
external alarm, or to discrete input products of Control I/O subsystems
for monitoring by a system console.
The connection to the discrete input unit can be factory installed. Make
direct external alarm connections at the installation site. The sensor is
rated at 5 A (Max), at 28 Vdc. Connection to the sensor uses 2
tap-to-screw type terminals. For additional information on alarm
connections, refer to the manual, AC and DC Power and Ground Wiring.
PN1:003.
Installing PROVOXr System Cabinets and Console Tables (Revision C — March 2002)
2
Section 2 F Type CP7005 Half-Depth Cabinet
8
Note ... All connections must be fully insulated and conform to local,
state and national electrical codes.
2
2.3
System Grounding
For proper system performance, a single instrumentation system earth
ground point should be provided. An example ground connection is
shown in Figure 2-2.
Power
Substation
Ground
Plant
Ground
Grid
Ground Rod
Plant Ground
Grid Connection
Figure 2-2.
Dedicated Instrumentation
System Ground
Plant Ground System Example
The instrumentation ground may be a separate plant ground or a point
on the plant ground grid. The grounding point must, however, be
separated from the ground points for all other electrical devices (welders,
motors, and so on). Any ground points for lightning protection devices
must be at least 6 feet (1.8 m) from all other ground points.
A high quality instrumentation system ground should provide a ground
point that measures one ohm or less to true earth. In some cases, three
ohms may be acceptable. In an unfavorable area, it may be necessary to
select the best ground impedance available. There are several methods
that can be used to obtain a high quality earth ground system, and these
methods vary depending upon the soil type and moisture content at the
individual location. Specific guidelines for grounding are described in the
manual, AC and DC Power and Ground Wiring, PN1:003.
Installing PROVOXr System Cabinets and Console Tables (Revision C — March 2002)
Type CP7005 Half-Depth Cabinet F Section 2
2.4
9
Cabinet Grounding
The cabinet grounding system provides protection against property
damage and accidental shock to personnel. It also provides a direct line
for grounding any electromagnetic interference in signal shield wires,
such as from static discharge or lightning.
The cabinet frames and the vertical cable trays in each multi-cabinet
grouping connect together through the cabinet grounding system. At the
installation site, provide a cabinet ground connection separate from the
dc ground connection for each cabinet grouping.
Use 0.50 inch (12.7 mm) wide, or larger, flat braided wire straps to
connect the following in a cabinet grouping:
J
The vertical cable trays to the mounting studs
J
The mounting studs in adjacent cabinets
J
J
2.5
The mounting stud in the center cabinet of a multi-cabinet grouping
to the cabinet ground
The grounding studs on cabinet panels to the mounting studs on the
cabinet frame
DC Grounding
Type CP7921 System Cabinet Grounding Kits provide proper dc ground
connections for the system cabinets. Kits are separately ordered
products which include either a local ground bus (LGB) or a master
ground bus (MGB). The LGB provides a common ground point for all
power supply common (PSC) circuitry within a cabinet group of eight or
fewer.
The MGB provides a common ground point for as many as six cabinet
groupings, each with an LGB. Therefore, as many as 48 cabinets can be
tied together and connected to an earth ground from one point. If a local
area has more than 48 cabinets, use additional LGBs and MGBs and
connect all MGBs to the designated instrumentation system earth
ground.
The large terminal lug in the center of the LGB accepts 1/0 to 4/0 AWG
(53.46 to 107.25 mm2) wire and connects to the MGB. If one cabinet
grouping forms the entire cabinet system, the terminal lug can be
connected directly to the system earth ground. The large terminal lug at
the side of the LGB accepts 1/0 to 4/0 AWG (53.46 to 107.25 mm2) wire
and is the connector for the battery backup return line (if used).
The seven terminal lugs on the MGB accept 1/0 to 4/0 AWG (53.46 to
107.25 mm2) wire. One of the seven terminals connects to the system
earth ground, and the other six connect to cabinet grouping LGBs.
Installing PROVOXr System Cabinets and Console Tables (Revision C — March 2002)
2
Section 2 F Type CP7005 Half-Depth Cabinet
10
Both the LGB and MGB are factory-installed at the bottom front panel of
the system cabinet centrally located in each group. Factory personnel
complete internal connections for each cabinet grouping.
During site installation, complete the connections between the cabinet
groupings and the earth ground. To make wire connections at the
terminal lugs, loosen the setscrew on top of the terminal lug until the wire
slips into the hole under the wire clamp. Insert the wire into the hole, and
tighten the setscrew until the wire is held securely.
2
2.6
Shield Grounding
The built-in shield grounding facility provides a common termination point
for shielded field wiring. The shield ground point (SGP) is a copper bus
bar mounted in each horizontal cable tray. The shield ground bar is
connected to the EIA rails or the cabinet frames.
Use 8 AWG (8.34 mm2) or larger multi-strand jacketed wire to connect
the following:
J
All shields to SGPs in each cabinet
J
All SGPs in each cabinet to the EIA rails or cabinet frame
J
J
2.7
All EIA rails and cabinet files to the LGB in the center of a
multi-cabinet grouping
The LGB in the center of the multi-cabinet grouping to the MGB
Field Wiring
Two 4 by 4 inch (101.6 by 101.6 mm) square openings in the top of the
cabinet panel provide top entry for field wiring. Square covers are
provided to seal the openings when not used. To route wiring into the
cabinets from overhead wireways, use square non-conductive wireways,
terminated with flanges that can be screwed down to the top of the
cabinet. To complete the routing, remove the cover from the top panel,
retaining the mounting screws for connecting the wireway.
Use the provided foam stripping to form a seal for the connection of the
wireway to the top panel. Route the wiring into the cabinet and into the
vertical and horizontal cable trays. When internal routing is complete,
secure the external wireway by using the four screws from the entry
covers to connect the flanges to the top panel. Visually inspect the
junction to ensure that the foam stripping completely seals the
connection.
Installing PROVOXr System Cabinets and Console Tables (Revision C — March 2002)
Type CP7010 System Cabinet F Section 3
11
Figure 3-Table 3
3
3 Type CP7010 System Cabinet
The Type CP7010 System Cabinet is an equipment enclosure that
houses rack and surface-mounted units used with PROVOXr
Instrumentation Systems. A cabinet consists of the following:
J
Cabinet frame with lifting eyes and leveling feet
J
High temperature sensor
J
Full-length door with keylock
J
Top and bottom panels
The Type CP7010 System Cabinet can be factory-assembled into
multibay combinations consisting of as many as six cabinets joined
together. Figure 3-1 shows nine possible combinations.
Figure 3-1.
Example of Factory Assembled Cabinet Arrangements
Installing PROVOXr System Cabinets and Console Tables (Revision C — March 2002)
3
Section 3 F Type CP7010 System Cabinet
12
Shipping considerations limit the size of a factory-assembled
combination to three bays or a four pack; however, virtually any
combination of back-to-back and side-to-side cabinet groupings can be
assembled at the installation site.
Lifting eyes secure the top panel to the cabinet frame and provide
attachment points for lifting. The lifting eyes extend upward 2.25 inches
(57 mm). Leveling feet, mounted on the bottom corners of the cabinet
frame, are recommended for multibay combinations. The leveling feet
have an adjustable range of 1 inch (25.4 mm) minimum to 1.5 inches
(38.1 mm) maximum.
3
A plinth-type cabinet base is an optional alternative to the leveling feet.
The base raises the cabinet 4.04 inches (103 mm) to facilitate bottom
cable entry and power and signal wiring access. This eliminates the
need for raised flooring. The base has easily removed front, back, and
side panels to allow the use of a fork-lift, or other lifting equipment, in
positioning cabinets in the plant.
Optional joining kits connect and seal joined frames to preserve
environmental integrity. A high temperature sensor mounted at the top of
the cabinet frame supplies heat monitoring capability in each system
cabinet.
3.1
Physical Installation
Figure 3-2 shows outline dimensions for a typical cabinet and component
parts. Use these physical characteristics to determine needed floor
space and transportation routes for the cabinets.
If a single cabinet is used as a stand-alone unit, certification standards
may require the cabinet to be secured to the building structure. The
cabinets can meet NEMA 12 application standards when equipped with
solid top, door fans and bottom wire entry.
Note ... When planning cabinet installation, remember that the
dimensions of the final installed cabinet will vary in accordance
with the components used to assemble the cabinet.
Installing PROVOXr System Cabinets and Console Tables (Revision C — March 2002)
Type CP7010 System Cabinet F Section 3
13
Top Panel w/Fan Cutouts
2.25
(57)
Cabinet
Cabinet
(Front)
79
(2007)
(Side)
17.75
(451)
31.5
(800)
3
81.25
(2064)
Top Panel
W/AC Cutouts
17.75
(451)
1
(25.4)
31.75
(806.5)
31.5
(800)
19.75
(501.7)
Fan
Plinth
(Top)
17.75
(451)
31.6
(803)
Figure 3-2.
(Side)
17.75
(451)
4.04
(103)
1.5
(38.1)
Extends outward from
door or top panel
inch
(mm)
Type CP7010 System Cabinet Dimensions
Caution ... Access space between the closed door of a cabinet and a wall
or other obstruction is of primary concern when planning
cabinet installations. The distance between facing cabinets
should be sufficient to allow access with doors open, and also
provide an aisle for personnel movement. It is recommended,
that safety personnel and your Fisher-Rosemount
representative be consulted for assistance in this area.
When planning cabinet installation, calculate the final cabinet dimensions
based on the component parts used. The following will apply:
J
Door swing is 31.25 inches (794 mm). A minimum of 4 feet (1.2 m)
should be left between the closed door of any cabinet and a wall or
other obstruction.
Installing PROVOXr System Cabinets and Console Tables (Revision C — March 2002)
Section 3 F Type CP7010 System Cabinet
14
J
Individual cabinets joined together without side panels, or
back-to-back will require slightly less space than cabinets with side
panels and doors or rear panels. Width of quantity N cabinets is
equal to N x 31.50 + 0.24.
A typical Type CP7010 System Cabinet shown in Figure 3-2, with side
panels, back panel and door will have the following dimensions:
3
J
Width: 31.75 inches (806.5 mm)
J
Depth: 19.75 inches (501.7 mm)
J
J
Height:82.25 inches (2089 mm) with leveling feet at minimum and
lifting eyes installed. 82.75 inches (2102 mm) with leveling feet at
maximum and lifting eyes installed.
Height: 85.29 inches (2166 mm) with plinth and lifting eyes installed.
Note ... Top mounted air conditioning unit dimensions are:
25.59 inches (650mm) wide by 15.75 inches (400mm) high by
16.73 inches (425mm) deep including inlet louvers.
Side mounted air conditioning unit dimensions are: 15.75 inches
(400mm) wide by 35.4 inches (900mm) high by 9.06 inches
(230mm) deep including inlet louvers.
3.2
Electrical Installation
Electrical installation includes providing the following to each cabinet:
J
AC power
J
System grounding
J
Field wiring
J
Data highway cables
Prepare the electrical installation using the guidelines in the related
documents listed in subsection 1.7. These documents provide an
understanding of the electrical requirements of a PROVOX
Instrumentation System. Requirements pertinent to cabinet installation
are discribed in the following paragraphs. All ac and dc wiring between
instruments installed in each cabinet is completed at the factory.
Installing PROVOXr System Cabinets and Console Tables (Revision C — March 2002)
Type CP7010 System Cabinet F Section 3
15
To connect the high temperature sensor mounted on the top of the
cabinet frame, connect it to appropriate terminals on the Type CP6103
System Power Supply Unit, which provides the contacts to activate an
external alarm. The sensor can also connect directly to an external
alarm, or to discrete input products of PROVOX I/O subsystems for
monitoring by a system console.
The connection to the discrete input unit can be factory installed. Make
direct external alarm connections at the installation site. The sensor is
rated at 5 A (Max), at 28 Vdc. Connection to the sensor uses 2
tap-to-screw type terminals.
For additional information on alarm connections, refer to the manual, AC
and DC Power and Ground Wiring, PN1:003.
External cabling enters the cabinet from the top (in units without
top-mounted air conditioners) or through the bottom panel. Internally,
cables route through horizontal and vertical cable trays for distribution
among the internally mounted instruments. Laminated bus bars distribute
instrument power, and dc power common to the card files. Shield
grounds attach to the cabinet frame and provide common terminations
for connecting field wiring shields to cabinet ground.
Note ... All connections must be fully insulated and conform to local,
state, and national electrical codes.
3.3
AC Power
The ac power requirements depend upon the equipment mounted in the
system cabinet. The equipment may include Fisher-Rosemount units,
cabinet-mounted air conditioners, or other rack mounted units specified
by the user. AC power cabling may enter the cabinet at either the top or
the bottom, as shown in Figure 3-3.
The instrumentation system equipment uses a nominal 24 volts dc. To
provide this power, the Type CP6103 System Power Supply Units are
available. Refer to the power supply product bulletin, BU4.4:CP6103, to
determine the input power requirements for your selected power
supplies.
Installing PROVOXr System Cabinets and Console Tables (Revision C — March 2002)
3
16
Section 3 F Type CP7010 System Cabinet
Fan Cutouts (2)
Top Entry
Top Entry Access
Panels (4)
3
System Cabinet
Power Cord
Access Panel
Bottom Entry
Figure 3-3.
Power Supply Unit
AC Power Cable Routing
System cabinet air conditioners can operate on:
J
nominal 220 volts ac (198 to 242 volts ac) at 50 hertz
J
nominal 235 volts ac (224 to 246 volts ac) at 60 hertz
J
nominal 110 volts ac (105 to 115 volts ac) at 50 hertz
J
nominal 115 volts ac (110 to 120 volts ac) at 60 hertz
Always provide separate ac power input for air conditioning units.
Keeping the air conditioning unit input power separate from other ac
power inputs minimizes variation in the power provided to the system
power supplies. Use a circuit breaker with a minimum gap of 0.125 inch
(3 mm) for the air conditioner ac power.
For ac power ground, ensure that all input power sources use the same
single system earth ground as the entire PROVOX Instrumentation
System.
For wiring diagrams and instructions for ac power connections at the
power supply housing, refer to the related documents listed in subsection
1.7. The air conditioning unit power cord must route through the bottom
of the cabinet if your cabinet has all of the following:
Installing PROVOXr System Cabinets and Console Tables (Revision C — March 2002)
Type CP7010 System Cabinet F Section 3
J
Top entry for instrumentation system input ac power cables
J
Side mounted air conditioning unit
17
When using top entry, you may mount a non-conductive utility box for
each input power cable directly in line with the cable entrance opening in
the cabinet top or mount a utility box up to 24 inches (609 mm) from the
top of the cabinet with 0.75 inch (19 mm) diameter non-conductive
conduit.
Figure 3-4 shows access panel assembly sequence for mounting panel
hardware. Figure 3-5 shows top entry access panels and fan cutout
locations. Using non-conductive conduit, fittings, and utility boxes helps
to ensure that the system ground is isolated.
Note ... Assembly sequence of mounting hardware for access panels
must be followed to maintain proper ground and CSA
certification.
Cover Plate
Screw
Lockwasher
Top Panel
Lockwasher
Nut
Flat Washer
Attaching Hardware Installation
Sequence to Maintain Ground
and Certification
NOTE: Torque nuts to 4 - 10 inch pounds
Flat Washer
Gasket
Figure 3-4.
Access Panel Mounting Hardware Sequence
Installing PROVOXr System Cabinets and Console Tables (Revision C — March 2002)
3
18
Section 3 F Type CP7010 System Cabinet
12.25
(311.2)
0.202
(5.13)
Dia.16 Places
.
3
6
(152)
6
(152)
6.62
(168)
1.375
(34.9)
.
.
.
.
.
.
7
(178)
.
.
6.62
(168)
2.63
(66.8)
7
(178)
.
.
.
.
.
.
.
1.25
(31.75)
31.5
(800)
Figure 3-5.
2
(50.8)
17.75
(451)
inch
(mm)
Top Entry Access Panels and Fan Cutout Locations
For bottom entry, the bottom panel, shown in Figure 3-6, has three parts,
each a different width. The parts can be interchanged to meet your
installation requirements. Two pressure bolts, one at each end, hold
each part in place. Loosen the securing bolts on each panel part and
remove or adjust the part to allow cable entry through the cabinet
bottom.
All wiring (including field wiring, highway cable, and ac power cables)
routes through the opening in the cabinet floor. Once the wiring is routed,
complete cable connections in the cabinet and replace any removed
panel parts. Apply the provided foam strips to the panel openings and
adjust the panel parts to secure the wiring. Use additional foam strips to
restore the environmental barrier. Secure the panel parts by tightening
the pressure bolts. Fasten an appropriate mating connector to the power
cord and connect the cord to the utility box.
Installing PROVOXr System Cabinets and Console Tables (Revision C — March 2002)
Type CP7010 System Cabinet F Section 3
19
31.5
(800)
7
(178)
5.5
(140)
3
17.75
(451)
Removable
Panels
3.5
(89)
inch
(mm)
25.25
(641)
Figure 3-6.
3.4
Bottom Entry Access Panels
System Grounding
For proper system performance, a single instrumentation system earth
ground point should be provided. However, the dc power and signal wire
grounding system and the ac power and cabinet grounding system
should be isolated from each other until they connect to the earth ground
or the plant ground system. An example ground connection is shown in
Figure 3-7.
Power
Substation
Ground
Plant
Ground
Grid
Ground Rod
Plant Ground
Grid Connection
Figure 3-7.
Dedicated Instrumentation
System Ground
Plant Ground System Example
Installing PROVOXr System Cabinets and Console Tables (Revision C — March 2002)
Section 3 F Type CP7010 System Cabinet
20
The instrumentation ground may be a separate plant ground or a point
on the plant ground grid. The grounding point must, however, be
separated from the ground points of all other electrical devices (welders,
motors, and so on). Any ground points for lightning protection devices
must be at least 6 feet (1.8 m) from all other ground points.
A high quality instrumentation system ground should provide a ground
point that measures one ohm or less to true earth. In some cases, three
ohms may be acceptable. In an unfavorable area, it may be necessary to
select the best ground impedance available. There are several methods
that can be used to obtain a high quality earth ground system, and these
methods vary depending upon the soil type and moisture content at the
individual location. Specific guidelines for grounding are described in the
manual, AC and DC Power and Ground Wiring, PN1:003.
3
3.5
Cabinet and AC Power Grounding
The cabinet frames and the vertical cable trays in each multi-cabinet
grouping connect together through the cabinet grounding system. At the
installation site, provide a cabinet ground connection separate from the
dc ground connection for each cabinet grouping. The cabinet grounding
system provides protection against property damage and accidental
shock to personnel. It also provides a direct line for grounding any
electromagnetic interference in signal shield wires, such as from static
discharge or lightning.
Use 0.50 inch (12.7 mm) wide, or larger, flat braided wire straps to
connect the following in a cabinet grouping:
J
The vertical cable trays to the mounting studs
J
The mounting studs in adjacent cabinets
J
J
The mounting stud in the center cabinet of a multi-cabinet grouping
to the cabinet ground
The grounding studs on cabinet panels to the mounting studs on the
cabinet frame
The cabinet grounding system also provides the ac power ground. For
the power supplies, the ground connection on the input power terminal
block straps to the power supply frame. Mounting the power supply in
the system cabinet connects the units to the cabinet grounding system
through the EIA rails and the cabinet frame. Similarly, the ground wire for
the air conditioner unit connects to the air conditioner cover and frame,
and the ac power ground connects to the cabinet grounding system
through the mounting connections.
Installing PROVOXr System Cabinets and Console Tables (Revision C — March 2002)
Type CP7010 System Cabinet F Section 3
3.6
21
DC Grounding
Type CP7921 System Cabinet Grounding Kits provide proper dc ground
connections for the system cabinets. Kits are separately ordered
products which include either a local ground bus (LGB) or a master
ground bus (MGB). The LGB provides a common ground point for all
power supply common (PSC) circuitry within a cabinet group of eight or
fewer.
The MGB provides a common ground point for as many as six cabinet
groupings, each with an LGB. Therefore, as many as 48 cabinets can be
tied together and connected to an earth ground from one point. If a local
area has more than 48 cabinets, use additional LGBs and MGBs and
connect all MGBs to the designated instrumentation system earth
ground.
The large terminal lug in the center of the LGB accepts 1/0 to 4/0 AWG
(53.46 to 107.25 mm2) wire and connects to the MGB. If one cabinet
grouping forms the entire cabinet system, the terminal lug can be
connected directly to the system earth ground. The large terminal lug at
the side of the LGB accepts 1/0 to 4/0 AWG (53.46 to 107.25 mm2) wire
and is the connector for the battery backup return line (if used).
The seven terminal lugs on the MGB accept 1/0 to 4/0 AWG (53.46 to
107.25 mm2) wire. One of the seven terminals connects to the system
earth ground, and the other six connect to cabinet grouping LGBs.
Both the LGB and MGB are factory-installed at the bottom front panel of
the system cabinet centrally located in each group. Factory personnel
complete internal connections for each cabinet grouping. During site
installation, complete the connections between the cabinet groupings
and the earth ground. To make wire connections at the terminal lugs,
loosen the setscrew on top of the terminal lug until the wire slips into the
hole under the wire clamp. Insert the wire into the hole, and tighten the
setscrew until the wire is held securely.
3.7
Shield Grounding
The built-in shield grounding facility provides a common termination point
for shielded field wiring. The shield ground point (SGP) is a copper bus
bar mounted in each horizontal cable tray. The shield ground bar is
connected to the EIA rails or the cabinet frames.
Use 8 AWG (8.34 mm2) or larger multi-strand jacketed wire to connect
the following:
J
All shields to SGPs in each cabinet
J
All SGPs in each cabinet to the EIA rails or cabinet frame
Installing PROVOXr System Cabinets and Console Tables (Revision C — March 2002)
3
Section 3 F Type CP7010 System Cabinet
22
J
J
3.8
All EIA rails and cabinet files to the LGB in the center of a
multi-cabinet grouping
The LGB in the center of the multi-cabinet grouping to the MGB
Field Wiring
In system cabinets without a top-mounted air conditioner, square
openings (Figure 3-5) in the top cabinet panel provide top entry for data
highway cables and field wiring. Square covers are provided to seal the
openings when not used.
3
To route wiring into the cabinets from overhead wireways, use square
non-conductive wireways, terminated with flanges that can be screwed
down to the top of the cabinet. To complete the routing, remove the
cover from the top panel, retaining the mounting screws for connecting
the wireway.
Use the provided foam stripping to form a seal for the connection of the
wireway to the top panel. Route the wiring into the cabinet and into the
vertical and horizontal cable trays. When internal routing is complete,
secure the external wireway by using the four screws (refer to Figure 3-4
for mounting sequence) from the entry covers to connect the flanges to
the top panel. Visually inspect the junction to ensure that the foam
stripping completely seals the connection.
For bottom entry, use the guidelines described in subsection 3.3 for ac
power wiring bottom entry.
3.9
Air Conditioner Installation
The factory ships air conditioner units separately from cabinet for
installation at the plant site. Before installation, inspect the site and the
equipment to ensure the following requirements are met:
J
J
J
J
J
J
The cabinet installation site provides good ventilation for dissipation
of heat from the air conditioner.
The available ac power at the site meets the input requirements for
the unit. (See the label on the unit).
The ambient temperature is no greater than 131o F (55oC).
The air conditioner packing is not damaged. Traces of oil damaged
packing may indicate a loss of refrigerant due to a leak in the system.
The cabinet is sealed correctly. If the cabinet is not sealed,
condensation can occur in the cabinet.
There is a gap of at least 8 inches (200 mm) between the air outlet
louvers and any other surface.
Installing PROVOXr System Cabinets and Console Tables (Revision C — March 2002)
Type CP7010 System Cabinet F Section 3
3.9.1
23
Mounting
The air conditioner unit connects to the cabinet using two cutouts and six
screws (for top-mounted units) or four bolts (for side-mounted units).
Mounting procedures are the same whether the unit is top or side
mounted. Position the unit and secure with hardware provided. Ensure
that the foam strip on the outside of the panel forms a complete seal for
the air conditioner/panel junction.
3.9.2
Electrical Connections
The ac power cable is coiled and fastened to the inside of the air inlet
duct for shipment. Use care when removing the cable to prevent pulling
the temperature sensor from its support.
Route the cable away from signal lines through the horizontal and
vertical cable trays to the top or bottom of the cabinet, as required. Use
the methods described above in subsection 3.3 to connect the power
cable to the input power junction box supplying power for the air
conditioner.
3.9.3
Setup
After mounting and connecting the air conditioner, set the thermostat to
the desired temperature setting. The factory setting is 95oF (35oC).
Caution ... Setting the thermostat too low can cause the evaporator line to
ice up, which could cause the air conditioner unit to fail. Never
set the thermostat lower than 86oF (30oC).
Set the thermostat, located behind the equipment terminal box in
top-mounted units, or at the bottom right of side-mounted units, as
follows:
Step 1:
Remove the rear panel on top-mounted units, or the unit
cover on side mounted units.
Step 2:
Locate the thermostat and remove the screw from the middle
of the thermostat setting knob.
Step 3:
Remove the setting knob.
Step 4:
Remove the retainer strip mounted beneath the setting knob.
Step 5:
Replace the setting knob and set the thermostat to the
required temperature using the left-hand scale on the side of
the thermostat. The scale is marked in oC.
Installing PROVOXr System Cabinets and Console Tables (Revision C — March 2002)
3
24
Section 3 F Type CP7010 System Cabinet
Note ... Changing the factory-set right-hand scale may cause
compressor damage. Never attempt to change the setting of the
right-hand scale.
3
Step 6:
Remove the setting knob, replace the retainer strip, replace
the setting knob, and secure the retaining screw.
Step 7:
Replace the rear panel or unit cover and secure screws.
Note ... Allow the unit to stand for 30 minutes after installation before
activation. This will permit the oil in the compressor to settle.
3.10
High Humidity Environments
To avoid excessive condensation, keep the cabinet door closed, and
provide an interlock to prevent the air conditioner from running when the
door is open.
3.10.1
Top-Mounted Unit Condensate Handling
The top-mounted air conditioning unit contains a condensate
evaporation device. An internal drain pipes the condensate to a warm
vapor pipe causing it to evaporate. If excessive humidity prevents
complete condensate evaporation, fit an overflow pipe at the rear of the
unit, and provide an extended drain hose to remove the condensate from
the cabinet.
3.10.2
Side-Mounted Unit Condensate Handling
The side-mounted air conditioning unit provides a drain outlet for 0.375
inch (9.53 mm) hose connection to pipe off condensate. To connect the
hose, loosen the four retaining screws and remove the air conditioning
unit cover. Feed the hose through the hole in the rear cover and attach it
to the drain outlet. Replace the unit cover and secure the retaining
screws. Route the hose to an appropriate drain.
Installing PROVOXr System Cabinets and Console Tables (Revision C — March 2002)
CP7820-Series Console Tables F Section 4
25
Figure 4-Table 4
4
4 CP7820-Series Console Tables
This section describes the physical dimensions, ac power wiring, and
data highway cable connections for the Type CP7821, CP7822, CL7823,
CP7824, and CP7825 Console Tables. A typical table is shown in
Figure 4-1.
Desktop Operator Station
Front Removed
to Show Detail
Figure 4-1.
VME Console
Electronics
Cable Access
In Top of
Worksurface
Side Removed
To Show Detail
Console Table Showing Desktop Operator Station and
Typical Console Electronics
The CP7820-Series Console Tables are intended to be used with the
following operator workstations:
J
DC6430-Series PROVUEr Desktop Operator Station
J
DC9430-Series Desktop X-Terminal Operator Station
The console tables provide internal mounting, on standard 19 inch (483
mm) EIA (RETMA) rails for rack mounted equipment such as console
electronics. It is recommended that only self-contained devices (those
with internal cooling fans) be mounted on these rails. Eleven rack units
are available for mounting devices.
Installing PROVOXr System Cabinets and Console Tables (Revision C — March 2002)
4
Section 4 F CP7820-Series Console Tables
26
A flat surface of the console table serves as a desktop for a video
display unit, keyboard, and the console user. The worksurface can be
joined to provide additional work area or a place to set equipment.
A utility power strip can be mounted inside the door at the lower rear of
the console table to provide power outlets for ac powered equipment
associated with the table. Figure 4-2 shows the utility power strip
installed in a console table.
4
Utility
Power
Strip
Access Panel
Figure 4-2.
X00358:CP7800--0
Lower Rear Inside View of Console Tables with Power
Strip
Access for power cords and signal cables is provided by a 3 inch (76
mm) diameter hole in the rear of the worksurface. A grommet and cover
is provided for custom installation.
4.1
Physical Installation
Console tables can stand alone or join with other tables to form a
multibay console grouping. Outline dimensions for the tables are shown
in Figure 4-3.
If a console table is to be used as a stand-alone unit and has ac
powered equipment mounted in it, a utility power strip must be included
in the table.
A utility power strip may not be required in each console table in a
multibay console grouping. Equipment may be connected to power strips
in adjacent tables providing the ac line power balance is not affected.
Refer to Balancing the AC Power Load in subsection 4.3.2 of this
installation manual.
Installing PROVOXr System Cabinets and Console Tables (Revision C — March 2002)
CP7820-Series Console Tables F Section 4
1
12.25
(311)
10.56
(268)
36.00
(914)
27
28.50
(724)
3
3.81 (97)
2
50.88
(1292)
6.00 (152)
F
Access
Panel
Removed
Table
Type
28.94
(735)
51.50
(1308)
Edge F
in.
mm
CP7822
CP7823
CP7824
50.88
1292
CP7821
51.50
1308
18o
27.34
(694)
29.00
(737)
31.12
(790)
38.75
(984)
Type CP7823
Type CP7821/CP7822
12.25
(311)
51.50
(1308)
12.25
(311)
51.50
(1308)
51.50
(1308)
27.34
(694)
23.56
(598)
Type CP7824
NOTES:
12.25
(311)
Type CP7825
1
Door clearance required for all operator console table assemblies
2
Access panel located in bottom rear of console, is secured
with six screws. Dimensions are 7 (177.8) by 11 (279.4).
3 inch (76 mm) diameter hole (with grommet and cover) to provide
access for cables.
2
Figure 4-3.
Outline Dimensions of Console Tables
Installing PROVOXr System Cabinets and Console Tables (Revision C — March 2002)
4
Section 4 F CP7820-Series Console Tables
28
For information about console layout specification sheets and
recommendations for console positioning, lighting, and air conditioning,
see documents listed in subsection 1.7.
Refer to Figure 4-4 for interior dimensions for equipment mounting.
4
20.98
(533)
15.91
(404)
17.72
(450)
Figure 4-4.
4.2
0.56
(14)
Interior Dimensions For Equipment Mounting
Electrical Installation
All wiring and cables enter the console table through the access panel in
the bottom rear as shown in Figure 4-2. If the console table contains a
utility power strip, the strip must be removed before the access panel
can be removed.
To remove the power strip, loosen the bolts securing it to the table and
remove the strip. Remove the screws securing the access panel to the
table and remove the panel.
Modify the access panel as required to accept all wires and cables
entering the console table. Replace the panel when wire and cable
routing is complete.
4.3
AC Power
If the console table contains a utility power strip, ac power connections
from a circuit breaker panel are required. Primary ac power connections
are made at the utility power strip as shown in Figure 4-5. Provide power
distribution and circuit breaker protection to the table as recommended in
the manual, AC and DC Power & Ground Wiring, PN1:003.
Installing PROVOXr System Cabinets and Console Tables (Revision C — March 2002)
CP7820-Series Console Tables F Section 4
CIRCUIT BREAKER
PANEL 4
UTILITY BOX
5
CONSOLE TABLE
5
2
5
29
UTILITY
POWER
STRIP
1
LINE BUS
NEUTRAL BUS
3
4
GROUND BUS
NOTES:
1
Second grounding conductor is present only if multiconductor cable is used.
2
Twist-type connectors for three conductor cable
3
Multistrand 8 AWG (3.264 mm) grounding conductor
4
All AC power leads to a multibay console grouping must be from the same circuit breaker panel.
5
Circuit breaker panel, utiltiy box, and connecting conduit are user supplied.
Figure 4-5.
4.3.1
Typical Console AC Power Wiring
Determining Wire Size
Operating voltage at the console table is affected by the voltage drop in
the ac power wiring to the table. The voltage drop is determined by the
length of the wiring, power drain by the equipment in the table, and the
wire size. To minimize the voltage drop, use a wire size that will
adequately carry the current required.
Table 4-1 provides a guide for selecting wire sizes. The table lists the
AWG size that provides approximately a one or two percent voltage drop
for wire lengths between the circuit breaker panel and the table.
Expressed as an equation, the voltage at the table will be:
V a = V s − PV s
where
Va = Operating voltage available at the table connection
Vs = Supply voltage at the circuit breaker panel
P = One or two percent voltage drop in the ac wiring to the
table
Installing PROVOXr System Cabinets and Console Tables (Revision C — March 2002)
30
Section 4 F CP7820-Series Console Tables
Table 4-1.
AC Power Wiring Sizing Guide
Wire Length
4
Voltage
Drop
40 ft
12.2 m
80 ft
24.4 m
120 ft
36.6 m
160 ft
48.6 m
200 ft
61.0 m)
240 ft
73.2 m
280 ft
85.3 m
320 ft
97.5 m
360 ft
109.7 m
400 ft
121.9 m
2%
10
AWG
2.588
mm
8
AWG
3.264
mm
6
AWG
4.115
mm
4
AWG
5.189
mm
4
AWG
5.189
mm
3
AWG
5.827
mm
3
AWG
5.827
mm
2
AWG
6.544
mm
1
AWG
7.348
mm
1
AWG
7.348
mm
1%
8
AWG
3.264
mm
4
AWG
5.189
mm
3
AWG
5.827
mm
2
AWG
6.544
mm
1
AWG
7.348
mm
0
AWG
8.252
mm
0
AWG
8.252
mm
00
AWG
9.226
mm
000
AWG
10.40
mm
000
AWG
10.40
mm
The operating voltage available at the console table must be greater
than the minimum operating voltage specified in the product bulletin for
each device it contains (105 Vac for 105 to 125 volt console products or
210 Vac for 210 to 250 volt console devices).
The wire lengths listed in Table 4-1 correspond to the length of the ac
power wiring from the circuit breaker to a utility box installed in the floor
beneath the console table. Additional information about the utility box is
provided in the Wiring Connections section of this manual.
The following example shows the ac power wire sizing procedure for an
console table containing 105 to 125 volt ac devices.
1. Determine that a two percent voltage drop is acceptable:
For the example, the supply voltage to the circuit breaker is 117 Vac.
A two percent voltage drop yields:
V a = 117 − 0.02(117) = 114.66
Therefore, (V a) > 105 Vac and a two percent voltage drop is
acceptable.
2. Determine the wire size required from Table 4-1.
Given a distance between the utility power strip and the circuit breaker
panel of 48 feet (14.6m) and a two percent voltage drop, Table 2 shows
that 8 AWG wire is required for this utility strip.
If a two percent drop is unacceptable, use the second row to determine
the wire size for a one percent drop. To obtain a one percent voltage
drop in the above example, use 4 AWG wire.
Installing PROVOXr System Cabinets and Console Tables (Revision C — March 2002)
CP7820-Series Console Tables F Section 4
4.3.2
31
Balancing the AC Power Load
Each utility power strip is rated at 15 amperes maximum. When certain
devices are activated and deactivated, they may create power surges
that cause the current draw to exceed the maximum rating. To keep from
exceeding 15 amperes, balance the power load over the utility power
strips so that the current draw on each is limited to 80 percent (12
amperes) of the maximum rating.
Refer to the individual product bulletin specifications for maximum power
for each unit. To find the maximum current (Imax ) for each unit, use the
following formula:
(I max) = W max
V min
The sum of all currents required by the units connected to the utility strip
must be less than 12 amperes.
The following example illustrates the calculation of total current for an
console table utility power strip with a Type DC6531 Console Printer Unit
and a Type DC6541 Console Disk Unit connected to it.
1. Calculate the maximum current required by each unit:
J
Type DC6531 Console Printer Unit
I max = 800 = 7.62 A
105
J
Type DC6541 Console Disk Unit
I max = 720 = 6.67 A
108
2. Sum of the currents required at the utility power strip:
7.62 + 6.67 = 14.29 A
Installing PROVOXr System Cabinets and Console Tables (Revision C — March 2002)
4
32
Section 4 F CP7820-Series Console Tables
If the total should exceed 12 amperes, adjust the unit combinations
connected to the utility power strips until no single power strip current
load exceeds 12 amperes.
4.3.3
Wiring Connections
Note ... All wiring must conform to applicable local, state, and federal
4
electrical codes.
AC power wiring to the utility power strip in each console table must be
connected to a separate circuit breaker. The circuit breakers for the
console tables in each multibay grouping must be located in the same
panel to provide common ground reference as stated in the manual, AC
and DC Power & Ground Wiring, PN1:003.
A wiring diagram for ac power to the console table is shown in
Figure 4-5. The ac power wiring from each circuit breaker must be routed
through rigid conduit from the circuit breaker panel to a utility box
installed in the building floor. The utility boxes should be installed directly
under the access panel in the console table. Ensure that the utility box
does not make contact with the console.
Note ... Metal conduit may act as a source for the introduction of
electrical noise into the system. To isolate the console from this
type of interference, avoid contact between conduit and
console.
A separate grounding conductor must be run from the ground bus at the
circuit breaker panel to the utility box. You may use 8 AWG (3.264mm)
wire, made up of a large number of small conductors, such as 168
strands of 30 AWG (0.25mm) to make the ground conductor. If the line
power and neutral wires are larger than 8 AWG, the grounding conductor
must be of equal size. If a multiconductor cable is routed to the utility
box, the stranded grounding conductor must be connected in parallel
with the grounding conductor and routed with it. All wires must be
insulated from the conduit and the utility box.
Installing PROVOXr System Cabinets and Console Tables (Revision C — March 2002)
CP7820-Series Console Tables F Section 4
33
Two lengths of 12 AWG (2.052mm), three conductor cable, joined with
twist-type connectors rated at either 20 amp/120 Vac or 10 amp/220 Vac,
are used to provide connections between the utility box and the utility
power strip. These cables should be of sufficient length to allow
connection and positioning as shown in Figure 4-6.
12 AWG Three Connector Cable
Utility Power Strip
Strain-relief Clamp
4
Access Panel
Console
Bay Floor
Strain-relief Clamp
Conduit from
Circuit Board
Figure 4-6.
Twist-type
Connector
Grommet
Floor
Utility Box
Floor
X00355:CP7800--0
Typical AC Power Conduit Connections
Note ... The wires from the utility box to the utility power strip are
typically shorter than the wires from the circuit breaker panel to
the utility box. 12 AWG (2.052mm) wire will be satisfactory,
since the voltage drop caused by the resistance of the shorter
wires is negligible.
Use the following procedures to make connections from the utility box to
the utility power strip:
1. Remove the cover plate from the utility box.
2. Install a strain-relief clamp in the hole on the cover plate.
3. Route the cable attached to the female end of the twist-type
connector through the strain-relief clamp.
4. Connect the cable to the wires in the utility box.
5. Replace the cover plate on the utility box and tighten the screws on
the strain-relief clamp to secure the cable.
6. Remove screws securing the utility power strip faceplate.
Installing PROVOXr System Cabinets and Console Tables (Revision C — March 2002)
Section 4 F CP7820-Series Console Tables
34
7. Install a strain-relief clamp in the knockout hole on the right (viewed
from the rear) of the utility power strip.
8. Route the cable attached to the male end of the twist-type connector
through the strain-relief clamp.
9. Connect the cable wires to the three pigtail leads (Figure 8) in the
utility power strip. Connect power wire to black, neutral to white, and
safety ground to green.
10. Replace the utility power strip faceplate and secure with screws.
4
11. Tighten the screws on the strain-relief clamp to secure cable.
12. Connect the cable at the twist-type connectors.
13. Install a protective grommet on the three conductor cable and slide
the grommet into the slot in the access panel.
14. Position the cable, replace the access panel and secure with screws.
15. Position the utility power strip and secure with bolts removed earlier.
Faceplate Screw
(2) Each End
Electrical Outlets
Bolt (2) Each End
Figure 4-7.
4.4
Grounding
Stud
Green Wire (Ground)
White Wire (Neutral)
Black Wire (Line)
Ground Wire
Connection
X00356:CP7800--0
Utility Power Strip and Wire Identification
Equipment Installation
It is recommended that only self-contained devices (those with internal
cooling fans) be mounted on the rails in the table. For information related
to the installation of monitors, keyboards, console electronics and other
devices, consult the manufacturers or Fisher-Rosemount Systems
installation procedures for the individual devices.
Allow sufficient cable length for strain relief for devices situated on the
worksurface. Anchored the cables inside the console table.
Installing PROVOXr System Cabinets and Console Tables (Revision C — March 2002)
Notes
PN:CP7005