The Allen-Bradley 1746-SIM is a diagnostic and commissioning tool engineered for the SLC 500 platform. This input simulator module serves as a critical aid for engineers and technicians, enabling the testing and verification of PLC ladder logic programs without requiring physical field devices such as sensors, limit switches, or pushbuttons. By utilizing 16 integrated toggle switches, the module allows for the manual triggering of input bits, facilitating efficient system development, debugging, and troubleshooting in a controlled environment.
Features
16 independent toggle switches for manual input simulation.
Gold-plated contacts ensure high-reliability signal switching.
Compact design specifically for SLC 500 I/O chassis integration.
Supports rapid logic testing and system commissioning.
Compatible with 24V DC sinking and sourcing I/O modules.
Applications
This module is primarily used in industrial automation environments for:
Offline and online PLC program debugging.
Commissioning of new machine control sequences.
Verification of I/O mapping and ladder logic functionality.
Educational and training environments for PLC programming.
Technical Specifications
Brand
Allen-Bradley
Product Line
SLC 500
Device Type
I/O Simulator
Number of Channels
16
Voltage Category
24V DC
Backplane Current (5V DC)
215 mA
Update Time
2 ms
Operating Temperature
0 to 60 degC (32 to 140 degF)
Storage Temperature
-40 to 85 degC (-40 to 185 degF)
Relative Humidity
5% to 95% (non-condensing)
Installation Guidelines
Compatibility Warning: The 1746-SIM is designed for 24V DC sinking and sourcing modules (e.g., 1746-IB16, 1746-ITB16, 1746-IV16, 1746-ITV16, 1746-IN16). Do not install on high-voltage AC modules to prevent equipment damage or electrical hazard.
Handling: Ensure the PLC chassis power is off before inserting or removing the module to prevent electrical arcing or damage to the backplane connectors.
ESD Precautions: Always follow standard electrostatic discharge (ESD) prevention practices when handling the module.
Mounting: Ensure the module is fully seated in the SLC 500 chassis slot and secured properly.
FAQ
Can I use this module with AC input cards?
No. The 1746-SIM is strictly for use with 24V DC sinking and sourcing modules. Using it with AC modules will result in permanent damage to the simulator and potentially the PLC hardware.
Does this module require external power?
The 1746-SIM draws its power from the SLC 500 backplane (215 mA at 5V DC). No additional external power supply is required for the simulator itself.
