Allen-Bradley 1746-IG16 SLC 500 Digital Input Module
The 1746-IG16 is a 16-point digital input module for Allen-Bradley SLC 500 programmable logic controller (PLC) chassis systems. Operating at low-voltage TTL logic levels with a nominal voltage rating of 5 VDC (4.5 to 5.5 VDC operating range) and sourcing input circuit topology, this module interfaces low-voltage discrete field devices, sensors, and electronic circuits directly with the host SLC 500 processor backplane.
Functional Operation and System Compatibility
Designed for installation into any open slot of a 1746 chassis, the 1746-IG16 detects discrete sourcing signal states from 5 VDC TTL electronic field devices. The module provides optical isolation to protect internal backplane logic from field-side noise and voltage transients while continually updating input image tables for execution by the PLC processor.
Wiring and Module Safety Notice
Ensure chassis backplane power and external signal power are turned off before inserting, removing, or wiring the module. Applying voltages outside the 4.5 to 5.5 VDC range will cause permanent damage to module inputs.
| Parameter | Specification |
|---|---|
| Model | 1746-IG16 |
| Brand | Allen-Bradley |
| Product Line | SLC 500 |
| Device Type | Digital Input Module |
| Inputs | 16 points |
| Nominal Voltage | 5 VDC TTL |
| Operating Voltage Range | 4.5 to 5.5 VDC |
| Circuit Topology | Sourcing |
| Signal Type | Discrete / Digital |
| Mounting Location | 1746 SLC Chassis Slot |
| Weight | 0.23 kg (0.51 lbs) |
Installation Guidelines
- Remove power from the SLC 500 rack and associated 5 VDC field power sources prior to installation.
- Align the circuit board of the 1746-IG16 with the chassis guide rails in the designated 1746 slot.
- Slide the module into the slot until the top and bottom retaining latches lock firmly in position.
- Wire the 5 VDC TTL sourcing input signals to the corresponding terminals on the removable terminal block (RTB) according to system schematic guidelines.
Frequently Asked Questions
Q: What operating voltage range does the 1746-IG16 support? A: The module operates at a nominal 5 VDC TTL level with an acceptable signal voltage range of 4.5 to 5.5 VDC.
Q: Is the 1746-IG16 a sourcing or sinking input module? A: It is a sourcing digital input module designed for low-voltage TTL discrete logic field connections.
Allen-Bradley 1746-IG16 SLC 500 Digital Input Module
Allen-Bradley 1746-IG16 SLC 500 Digital Input Module
The 1746-IG16 is a 16-point digital input module for Allen-Bradley SLC 500 programmable logic controller (PLC) chassis systems. Operating at low-voltage TTL logic levels with a nominal voltage rating of 5 VDC (4.5 to 5.5 VDC operating range) and sourcing input circuit topology, this module interfaces low-voltage discrete field devices, sensors, and electronic circuits directly with the host SLC 500 processor backplane.
Functional Operation and System Compatibility
Designed for installation into any open slot of a 1746 chassis, the 1746-IG16 detects discrete sourcing signal states from 5 VDC TTL electronic field devices. The module provides optical isolation to protect internal backplane logic from field-side noise and voltage transients while continually updating input image tables for execution by the PLC processor.
Wiring and Module Safety Notice
Ensure chassis backplane power and external signal power are turned off before inserting, removing, or wiring the module. Applying voltages outside the 4.5 to 5.5 VDC range will cause permanent damage to module inputs.
| Parameter | Specification |
|---|---|
| Model | 1746-IG16 |
| Brand | Allen-Bradley |
| Product Line | SLC 500 |
| Device Type | Digital Input Module |
| Inputs | 16 points |
| Nominal Voltage | 5 VDC TTL |
| Operating Voltage Range | 4.5 to 5.5 VDC |
| Circuit Topology | Sourcing |
| Signal Type | Discrete / Digital |
| Mounting Location | 1746 SLC Chassis Slot |
| Weight | 0.23 kg (0.51 lbs) |
Installation Guidelines
- Remove power from the SLC 500 rack and associated 5 VDC field power sources prior to installation.
- Align the circuit board of the 1746-IG16 with the chassis guide rails in the designated 1746 slot.
- Slide the module into the slot until the top and bottom retaining latches lock firmly in position.
- Wire the 5 VDC TTL sourcing input signals to the corresponding terminals on the removable terminal block (RTB) according to system schematic guidelines.
Frequently Asked Questions
Q: What operating voltage range does the 1746-IG16 support? A: The module operates at a nominal 5 VDC TTL level with an acceptable signal voltage range of 4.5 to 5.5 VDC.
Q: Is the 1746-IG16 a sourcing or sinking input module? A: It is a sourcing digital input module designed for low-voltage TTL discrete logic field connections.
