detcon inc.
Detcon Model 410-N1 Rack
Panel Mount Control Enclosure
Operator’s Installation & Instruction Manual
July 15, 2004 • Document #2658 • Version 1.1
Table of Contents
1.0 Introduction
1.1 Description
1.2 Specifications
1.3 Remote Reset
1.4 Installation
1.5 Start-Up
1.6 Maintenance and Repair
1.7 Spare Parts
1.8 Warranty
Detcon Model 410-N1 Rack Panel Mount Control Enclosure PG.1
1.0 INTRODUCTION
Detcon Model 410B-N1 Rack consists of 3 major assemblies:
1. The NEMA 1 rack mount control enclosure.
2. The single channel digital control modules.
3. The remote mount gas sensor assemblies.
The NEMA 1 control enclosure is detailed in section 1.0 of the manual, the control modules in section
2.0, and applicable sensor assemblies in section 3.0.
1.1 DESCRIPTION
Detcon Model 410-N1 along with Model 10B digital control modules is designed to serve as a host assembly for up to four remote mount gas detection sensor assemblies. The control enclosure is rated NEMA 1
suitable for installation in non-hazardous locations. The single channel modular design supports application flexibility wherein multiple function gas detection systems can be configured in any combination up
to four channels. All control modules are plug-in front panel accessible for easy maintenance and repair.
The control enclosure houses a modular power supply (Model PS100-10B) which includes, as standard
operating controls, a power on/off switch and a line power fuse.
Discreet output terminal strips located on the controller motherboard are provided for sensor terminations,
Form C dry contact alarm outputs (normally open, normally closed and common) for two alarms plus
fault, 4-20 mA outputs for remote recording devices, and RS-485 serial Modbus™. Additional terminations
are provided for VAC power in, VDC power in, and remote alarm reset.
Form C relay outputs may be discreet, zoned or common by gold plated jumper tabs located on the controller mother board.
1.2 SPECIFICATIONS
Electrical Classification
NEMA 1
Dimensions
13"W, 5.25"H, 8"D
Capacity
4 Single Channels
Power Input
117VAC/24 VDC
Alarm Contacts
Discreet Fault, Low, High, per Channel
5 Amp @ 30VDC/5 Amp @ 125VAC
Common, Normally Open and Normally Closed
Outputs
Discreet 4-20 mA DC
Serial RS-485 Modbus™
Operating Temperature Range
-40°F to +175°F
Power Consumption
<5 Watts per Channel (includes gas sensor and control module)
Warranty
One Year
Detcon Model 410-N1 Rack Panel Mount Control Enclosure PG.2
1.3 REMOTE RESET
The reset function is effective when the Model 10B's respective alarms have been programmed in the latching
position and alarm conditions have passed. The alarm reset function is common to all controllers and is activated by closing the circuit between the two reset contacts. A normally open momentary switch is suitable.
1.4 INSTALLATION
1. Securely mount the 410-N1 rack enclosure in accordance with Figure 1.
Fig. 1
5.25
2.25
.375
Panel cutout
(centered) 11.75" x 5"
Panel depth - 8"
.218
Slot Detail
use 10-32 screw
13
Note: Reference figure 2 for wiring terminations
Caution: Observe correct polarity when terminating all input/output field wiring. Failure to do so may
result in circuit damage on power up.
Typical Each Channel
Alarm Jumper Tabs
Fig. 2
L1
VAC IN
N
GND
VDC IN
+
–
A(+)
RS-485
B(–)
Shield
Normally Closed
Common
Low Alarm
Normally Open
Normally Closed
Common
High Alarm
Normally Open
Normally Open
Common
Fault Alarm
Normally Closed
+
Common
4-20 mA Output
+ Signal (mA)
External Reset
Close to Reset
+
–
Detcon Model 410-N1 Rack Panel Mount Control Enclosure PG.3
Sensor
2. Connect 117VAC input to the terminal strip labeled “VAC IN” (L1, N, GND).
3. If applicable, connect a 24VDC source or standby battery to the terminal strip labeled “VDC IN” (+ and –).
4. If applicable, connect a normally open momentary remote mounted switch to the lugless terminal strip
(labeled RESET) located on the controller mother board.
5. If applicable, terminate the discrete 4-20 mA output to external device(s). Terminals are labeled “(+) 420” and “(–) 4-20”.
6. If applicable, terminate the RS-485 serial output to external device(s). Terminals are labeled “A (+)”, “B
(–)”, and “SHLD”.
7. Refer to installation and wiring detail of remote mount sensor assemblies as detailed in section 3.0.
Terminate field wiring from sensors to Model 410-N1 rack lugless terminal strips located on the controller mother board.
7. Alarm relay outputs may be discrete, zoned, or common via gold plated jumper tabs. Configure accordingly.
Note: Based on the application and use of relay contact outputs, complete all wiring terminations prior to
application of power. Shut-in controls may be omitted until system test is complete.
1.5 START-UP
Upon completion of all field wiring: Depress the power switch located on the front panel. Note that each
Model 10B controller digital display illuminates. Varying readings may occur during sensor warm-up. A 10
second alarm delay will occur on power up. Refer to sections 2.0 and 3.0 for additional start-up detail.
1.6 MAINTENANCE AND REPAIR
The Detcon Model 410-N1s modular design allows for minimum down time during maintenance and/or
repair. A model 10B control module may be changed by turning the latch knob clockwise until it stops
and then sliding it out of the panel by pulling on the latch knob. To install, slide the 10B control module
into the 410-N1 control enclosure and then secure by turning the latch knob counter-clockwise until it
stops. See section 3 for more information on the 10B control module.
The Model PS100-10B 100 watt power supply can be replaced by turning the latch knobs clockwise until
they stop and then sliding it out of the panel. A new power supply can then be installed or the existing
one repaired. It is recommended that VAC and VDC power be removed from the 410-N1 motherboard
before doing maintenance on, or replacing the power supply.
Replacement of the power switch, or fuse holder is accomplished by: removing the power supply from the
panel; disconnecting the plug from its respective header; remove the wires from the plug of the component
to be replaced; snap the component out of the PS100-10B face plate and then reassembly with the new
component. Reference the PS100-10B schematic/wiring diagram in figure 3 for wiring details
Replacement of the power supply itself is accomplished by: removing the PS100-10B power supply module
from the panel; disconnecting the 2 connectors from the back of the power supply; removing the 4 screws
that mount the power supply to the bracket; then reassembly with the new power supply. Reference the
PS100-10B schematic/wiring diagram in figure 3 for wiring details.
Detcon Model 410-N1 Rack Panel Mount Control Enclosure PG.4
Fig. 3
This side toward front
of power supply assembly
Power
Supply
DC Out
16ga x 9"
BLK
16ga x 9"
RED
+
+
+
+S
–S
–
–
–
Power Supply
GND
N
L
1
6
Power
Supply
P1
VAC In
16ga x 6"
GND - GRN
N - WHT
L1 - BLK
1
16ga x 6"
2
16ga x 6"
3
P2
Power
Switch
BLK 16ga x 6"
BLK 16ga x 6"
TAN 22ga x 6"
TAN 22ga x 6"
RED 16ga x 6"
RED 16ga x 6"
D1 6A 50V
D2 6A 50V
P5
P3
Fuse
L1 In
N In
GND In
+DC In
–DC In
+DC Out
–DC Out
BLK 16ga x 3"
BLK 16ga x 3"
P4
1.7 SPARE PARTS
0224
951-585510-100
360-GPFC11-024
2812
298-000000-000
320-3217-1
2806
320-32800-1
910-000008-003
Gold plated jumper tab
PS-100 100 watt modular power supply (complete plug-in power supply module)
110 watt, 24 VDC switcher power supply (replacement power supply for PS100-10B)
24 VDC lamp for power switch
2 amp 3AG slow blow fuse
Power switch assembly
Green switch cap (for power switch)
Fuse holder Assembly
Model Series 10 Blank Plate
1.8 WARRANTY
Detcon inc., as manufacturer, warrants under intended normal use each new Model 410-N1 rack control
enclosure to be free from defects in material and workmanship for a period of one year. The warranty period begins from the date of shipment to the original purchaser and ends one year thereafter. All warranties
and service policies are FOB the Detcon Inc. facility located in The Woodlands, Texas.
Shipping Address: 3200 A-1 Research Forest Dr., The Woodlands, Texas 77381
Mailing Address: P.O. Box 8067, The Woodlands, Texas 77387-8067
phone 888-367-4286, 281-367-4100 • fax 281-292-2860 • www.detcon.com • sales@detcon.com
Detcon Model 410-N1 Rack Panel Mount Control Enclosure PG.5