Allen-Bradley 1746-SIM SLC 500 Input Simulator Module
The 1746-SIM is a 16-channel input simulator module for Allen-Bradley SLC 500 programmable logic controller (PLC) systems. Designed to directly replace the removable terminal block (RTB) on compatible 16-channel digital input modules, it provides 16 onboard toggle switches that allow automation engineers and maintenance personnel to manually simulate 24 VDC sinking inputs during system testing, code verification, and fault diagnosis without external field wiring.
Functional Operation and Compatibility
The module attaches directly to the front interface of designated 16-channel 24 VDC input modules. Equipped with gold-plated contact pins for reliable signal integrity, the 1746-SIM converts physical switch positions into discrete input states for local PLC logic validation.
Module Compatibility Warning
Installing the 1746-SIM on modules other than those specified above can cause permanent equipment damage and expose maintenance personnel to dangerous voltage levels.
Power Supply and Connection Rules
The 1746-SIM requires an external 24 VDC power connection applied across terminals A and B on the unit. In standard operational setups, this power can be supplied directly from the 24 VDC auxiliary user power output of the host SLC 500 chassis power supply.
To facilitate wiring, the terminal connector can be removed prior to applying power lines.
| Parameter | Specification |
|---|---|
| Model | 1746-SIM |
| Brand | Allen-Bradley |
| Device Type | Digital Input Simulator Module |
| Compatible Modules | 1746-IB16, 1746-ITB16, 1746-IV16, 1746-ITV16, 1746-IN16 |
| Channel Count | 16 input toggle switches |
| Input Voltage Rating | 24 VDC |
| Contact Plating | Gold |
| Backplane Current (5 VDC) | 215 mA |
| Signal Update Time | 2 ms |
| Slot Requirement | Mounts to existing 1-slot 16-point I/O module |
| Compatible RTB Options | 1746-RT26, 1746-RT27, 1492-AIFMQS |
| Operating Temperature | 0 to 60 deg C (-13 to 140 deg F) |
| Storage Temperature | -40 to 85 deg C (-40 to 185 deg F) |
| Operating Humidity | 5 to 95% non-condensing |
| Vibration Resistance | 2 g @ 10-500 Hz |
| Hazardous Location Rating | Class I, Division 2, Groups A, B, C, D |
| Directives & Standards | Low Voltage Directive 73/23/EEC, EN 61131-2 |
| Weight | 0.25 lbs (0.11 kg) |
Installation Guidelines
- Ensure the host SLC 500 rack and module power are completely switched off before installation or removal.
- Remove the standard wiring RTB (such as 1746-RT26 or 1746-RT27) from the compatible 16-channel input module.
- Align the gold-plated pins of the 1746-SIM with the terminal interface of the input module and press firmly into place.
- Wire the 24 VDC power supply lines to terminals A and B on the simulator unit.
Frequently Asked Questions
Q: Can the 1746-SIM be inserted or removed while the SLC 500 rack is powered (hot-swapped)? A: No, power to the SLC chassis and external power to the module must be disconnected before installing or removing the simulator module or terminal blocks.
Q: Where does the 1746-SIM get its 24 VDC operating power? A: It requires a 24 VDC connection wired to terminals A and B, which can typically be drawn from the 24 VDC user supply on the SLC 500 chassis power supply.
Allen-Bradley 1746-SIM SLC 500 Input Simulator Module
Allen-Bradley 1746-SIM SLC 500 Input Simulator Module
The 1746-SIM is a 16-channel input simulator module for Allen-Bradley SLC 500 programmable logic controller (PLC) systems. Designed to directly replace the removable terminal block (RTB) on compatible 16-channel digital input modules, it provides 16 onboard toggle switches that allow automation engineers and maintenance personnel to manually simulate 24 VDC sinking inputs during system testing, code verification, and fault diagnosis without external field wiring.
Functional Operation and Compatibility
The module attaches directly to the front interface of designated 16-channel 24 VDC input modules. Equipped with gold-plated contact pins for reliable signal integrity, the 1746-SIM converts physical switch positions into discrete input states for local PLC logic validation.
Module Compatibility Warning
Installing the 1746-SIM on modules other than those specified above can cause permanent equipment damage and expose maintenance personnel to dangerous voltage levels.
Power Supply and Connection Rules
The 1746-SIM requires an external 24 VDC power connection applied across terminals A and B on the unit. In standard operational setups, this power can be supplied directly from the 24 VDC auxiliary user power output of the host SLC 500 chassis power supply.
To facilitate wiring, the terminal connector can be removed prior to applying power lines.
| Parameter | Specification |
|---|---|
| Model | 1746-SIM |
| Brand | Allen-Bradley |
| Device Type | Digital Input Simulator Module |
| Compatible Modules | 1746-IB16, 1746-ITB16, 1746-IV16, 1746-ITV16, 1746-IN16 |
| Channel Count | 16 input toggle switches |
| Input Voltage Rating | 24 VDC |
| Contact Plating | Gold |
| Backplane Current (5 VDC) | 215 mA |
| Signal Update Time | 2 ms |
| Slot Requirement | Mounts to existing 1-slot 16-point I/O module |
| Compatible RTB Options | 1746-RT26, 1746-RT27, 1492-AIFMQS |
| Operating Temperature | 0 to 60 deg C (-13 to 140 deg F) |
| Storage Temperature | -40 to 85 deg C (-40 to 185 deg F) |
| Operating Humidity | 5 to 95% non-condensing |
| Vibration Resistance | 2 g @ 10-500 Hz |
| Hazardous Location Rating | Class I, Division 2, Groups A, B, C, D |
| Directives & Standards | Low Voltage Directive 73/23/EEC, EN 61131-2 |
| Weight | 0.25 lbs (0.11 kg) |
Installation Guidelines
- Ensure the host SLC 500 rack and module power are completely switched off before installation or removal.
- Remove the standard wiring RTB (such as 1746-RT26 or 1746-RT27) from the compatible 16-channel input module.
- Align the gold-plated pins of the 1746-SIM with the terminal interface of the input module and press firmly into place.
- Wire the 24 VDC power supply lines to terminals A and B on the simulator unit.
Frequently Asked Questions
Q: Can the 1746-SIM be inserted or removed while the SLC 500 rack is powered (hot-swapped)? A: No, power to the SLC chassis and external power to the module must be disconnected before installing or removing the simulator module or terminal blocks.
Q: Where does the 1746-SIM get its 24 VDC operating power? A: It requires a 24 VDC connection wired to terminals A and B, which can typically be drawn from the 24 VDC user supply on the SLC 500 chassis power supply.
