Specifications
1756sc-IF8H
1756sc-OF8H
Inputs/Outputs
Module Location
Input/Output Types
Current
Voltage
8 (eight) inputs
1756 I/O chassis—1 slot
8 (eight) outputs
1756 I/O chassis—1 slot
0-20 mA, 4-20 mA
0-5V, 1-5V, 0-10V, ±10V
0-20 mA, 4-20 mA
0-5V, 1-5V, 0-10V, ±10V
Primary w/Engineering Units
Secondary w/Engineering Units
Tertiary w/Engineering Units
Fourth w/Engineering Units
Primary w/Engineering Units
Secondary w/Engineering Units
Tertiary w/Engineering Units
Fourth w/Engineering Units
Slot Variables 0-3 w/Engineering Units
HART Dynamic Variables
Analog Input and Output Modules with HART Protocol
1756sc-IF8H and 1756sc-OF8H
for Allen-Bradley ControlLogix™ PLC
Exploit the power of your existing HART field instruments with
Spectrum Controls’ 1756sc-IF8H and 1756sc-OF8H modules with
HART protocol.
Obtain real-time data from your process instruments and operate a
smart network—without the need for additional wiring.
Easily perform setup, calibration, commissioning and periodic
maintenance functions.
Advanced Features
5 filter frequencies (channel selectable)
Factory calibration; on-board error checking; open circuit detection
Accuracy
Update Times*
0.05% of range voltage
0.15% of range current
.05 to 1 second for all channels
0.05% of range voltage
0.15% of range current
.05 to 1 second for all channels
Resolution
Data Formats
16 to 21 bits—all ranges
Floating Point IEEE 32 bit
16 to 21 Bits—all ranges
Floating Point IEEE 32 bit
Electrical Isolation
2550 Vdc field-wiring-to-backplane
2550 Vdc field-wiring-to-chassis-ground
>1 Mohm Voltage
<200 ohm, Current
100 dB @ 50/60 Hz
100 dB @ 50/60 Hz
350 mA @ 5 V max
60 mA @ 24 V max
5.90 Watts maximum
• Convenience with the ability to program and monitor HART devices from a
single workstation.
Thermal Dissipation
2550 Vdc field-wiring-to-backplane
2550 Vdc field-wiring-to-chassis-ground
>1 Mohm Voltage
<200 ohm, Current
14.5 Vdc continuous
250W pulsed for 1 msec.
28mA continuous
40mA, 1msec pulsed, 10% duty cycle max
100 dB @ 50/60 Hz
100 dB @ 50/60 Hz
150 mA @ 5 V max
40 mA @ 24 V max
4.00 Watts maximum
Environmental Conditions
Operational Temperature
Storage Temperature
Relative Humidity
0° to 60°C (32° to 140°F)
-40° to 85°C (-40° to 185°F)
5% to 95% (non-condensing)
0° to 60°C (32° to 140°F)
-40° to 85°C (-40° to 180°F)
5% to 95% (non-condensing)
Dramatically Reduce Installation Costs
Certifications
UL/CUL (Class I, Div 2, Groups ABCD), FM and CE
The 1756sc-IF8H Analog Input and 1756sc-OF8H Analog Output Modules provide
ControlLogix PLCs with full analog capability and the benefit of a HART (highway
addressable remote transducer) protocol in an I/O module. These modules offer
eight channels of analog input and output—each easily configured for voltage or
current signals. The 1756sc-IF8H and 1756sc-OF8H also act as a HART master,
allowing communication with HART field devices. HART data is available directly on
the ControlNet network.
These modules reside in a standard 1756 I/O backplane and offer:
Impedance
Input Overvoltage Protection
Input Overcurrent Protection
Common Mode Rejection
Normal Mode Rejection
Backplane Current Required
• Versatility by providing both analog measurements and the HART data in
one module.
• Exceptional value by substantially lowering installation costs. Field devices
may be interfaced directly to the module, eliminating the expense of additional
external HART bridge devices or hand-held communicators.
• Flexibility through a wide variety of user selectable features such as selectable range type, process alarms, HART variables and filter frequencies.
• Ease of installation with support from RSLogix 5000 programming software.
Installation and operation mirror ControlLogix modules, including simple
configuration.
These modules maximize your I/O performance by combining real-time
HART data acquisition in conjunction with standard analog acquisition and
control—at a fraction of the cost. Field wiring requirements are reduced and
maintenance is simplified. The result is maximum data access and a lower totalcost-of-ownership.
Outstanding Features
Spectrum Controls’ 1756sc-IF8H and 1756sc-OF8H HART I/O Modules include:
• Full Read/Write HART capability.
• HART PV, SV, TV, FV along with analog data.
Corporate Headquarters
Spectrum Controls, Inc.
P.O. Box 5533 • Bellevue, WA 98006 USA
Tel 425-746-9481 • Fax 425-641-9473
Email spectrum@spectrumcontrols.com
www.spectrumcontrols.com
©2003, Spectrum Controls, Inc. All rights reserved.
All other trademarks are the property of their respective owners.
Specifications subject to change without notice.
Printed in USA. Publication #0100093-01A
• Flash memory allows upgrades to the module to be performed by the user.
• Isolation with 2550 Vdc channel-to-backplane
isolation; 2550 Vdc channel-to-chassis ground isolation.
HART Input and Output Modules
1756sc-IF8H and 1756sc-OF8H
for Allen-Bradley ControlLogix™ PLCs
A ControlLogix PLC can be the HART gateway for a complete plant control system. The power of a ControlNet
network may provide data to any workstation on the system. Asset management, system configuration and
maintenance tasks that required personnel to acquire data from the factory floor may now be easily performed
from a single workstation.
Spectrum Controls’ HART I/O communicates digitally with field devices, increases input/output capacity and provides access
to more information about your process than conventional I/O subsystems. Spectrum Controls’ HART I/O modules perform
both digital and analog data acquisition. These unique modules greatly enhance device diagnostics that affect your control
strategy and alert operators to device malfunctions.
Benefits
Analog Data
and
HART Digital Data
HART
Field Devices
Access multivariable instruments. Dramatically reduce costs using Spectrum Controls’ HART I/O by increasing information
flow four- to eight-fold. For example, a mass flowmeter can measure mass flow, temperature, density and volume flow, but a
HART output channel can read back information such as the actual valve position without the need for additional wiring. Using
standard I/O, you would need to wire each of these signals individually,
Take advantage of smart device capabilities. Spectrum Controls’ HART I/O increases your ability to communicate with
field devices. You can have complete trust in your signal, knowing that Spectrum Controls’ HART I/O is in constant communication with your smart devices. Use the additional HART I/O information from the devices in a control strategy for trending and
alarming—just like signals from standard I/O.
1756sc-IF8H
Spectrum Controls HART
Input Module
1756sc-OF8H
Spectrum Controls HART
Output Module
Flowmeter Inputs
Pressure Inputs
Temperature Inputs
Valve Position Inputs
Valves
Drives
Speed Controls
ControlLogix
or
ProcessLogix
Controller
ControlNet
Network
Plant Control
Workstation
Performance
Diagnostics. Early diagnosis of valve or field instrument problems allows preventative maintenance as required, rather than on
a scheduled basis. Spectrum Controls’ HART I/O allows access critical parameters to determine maintenance cycles.
Modular design. Spectrum Controls’ HART I/O was designed with your investment in mind. All modules are compatible with
existing Allen-Bradley I/O chassis and may be installed under power. These modules offer standard analog input/output
and HART enabled input/output with analog. Each channel is configurable for input range and HART capability. Installation is simple and quick, using existing programming software. Wiring costs decrease substantially as Spectrum Controls’
HART I/O can be installed in the field, close to the actual field devices. Remote mounting the controller with the I/O
further reduces wiring costs by eliminating the need for long cable runs. The integrated design of the Spectrum Controls’ HART I/O saves even more by eliminating the need for marshaling panels.
Workstation
Data Exchange
Producer/consumer technology. Spectrum Controls’ HART I/O was designed to minimize load on your system. Acquire
data via the controller or talk to the module independent of the controller. This minimizes system performance impact and
processor cycles.
RSLinx/OPC/DDE
HART Device
Configuration
Software
Asset
Management
Software
Diagnostic and
Troubleshooting
Software
This combination of Spectrum Controls’ HART
Analog I/O Modules, the ControlLogix PLC and
existing software provide a full feature process
management system with configuration,
troubleshooting and maintenance capability.
Additional Benefits
Application
Software
Increase your process control system’s level of sophistication using Spectrum Controls’ HART I/O. You’re already aware of the
increased input/output capabilities and improved communication with your smart devices. Now go one step further and use an
asset management system (AMS) with your Spectrum Controls’ HART I/O. AMS software allows you to configure, calibrate,
diagnose and troubleshoot your smart field devices from the control room using AMS with Spectrum Controls’ HART I/O.
Increase product quality and minimize unplanned downtime with this dynamic application, while improving the productivity and
profitability of your process.
Minimize programming and setup time. The HART I/Os interface directly to the field instrument using standard terminal block
connections. When HART is enabled, the module automatically detects the device and reports device specific information
back to you. The modules then begin to poll the field device for the HART PV,SV,TV and FV. No programming necessary.
Higher level operations such as ranging and calibration are performed through the use of unconnected messages. You have full
read/write access to your field device allowing common practice, extended and vendor specific HART commands.