Allen-Bradley 1791ES-IB16 CompactBlock Guard I/O Module
The Allen-Bradley 1791ES-IB16, also cataloged as the 1791ES-IB16 Safety Digital Input Module, operates as a dedicated hardware component for discrete safety signal acquisition within EtherNet/IP platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1791ES-IB16 |
| Brand | Allen-Bradley |
| Origin | USA |
| Weight | 0.90 lbs (0.41 kg) |
| Dimensions | Standard CompactBlock Guard I/O profile |
| Operating Temp | Standard Allen-Bradley industrial operating range |
| Power Consumption | Standard 24 VDC system power draw |
| Module Type | Safety Digital Input Module |
| Channels | 16 safety inputs |
| Input Voltage | 24 VDC |
| Communication Network | EtherNet/IP (CIP Safety) |
| System Platform | CompactBlock Guard I/O |
Backplane Bus Communication Velocity and CIP Safety Network Determinism
The Allen-Bradley 1791ES-IB16 integrates 16 discrete safety input channels that communicate over EtherNet/IP networks running CIP Safety protocol to achieve high communication velocity and deterministic state monitoring. Designed to process safety inputs from devices such as emergency stops, safety switches, and light curtains, the module conducts continuous internal cross-checking and pulse test diagnostics to detect channel short circuits, wire breaks, and ground faults. Full firmware flash compatibility ensures synchronized cyclic safety data exchange with GuardLogix controllers without deterministic network latency.
Frequently Asked Questions
Q: What network protocol does the 1791ES-IB16 use to exchange safety data with the central PLC?
A: The module utilizes standard EtherNet/IP media running CIP Safety transport layer extensions to communicate deterministic safety state information with GuardLogix or CompactGuardLogix processors.
Q: Can the 16 safety input channels on the 1791ES-IB16 be configured for dual-channel sensor evaluation?
A: Yes, the input points can be configured in pairs within controller programming to support dual-channel safety devices up to SIL 3 / Category 4 / PLe requirements.
Field Installation Guidelines
- Mount the 1791ES-IB16 module securely onto a standard 35 mm DIN rail or directly to the enclosure backplate using mounting screws.
- Connect the 24 VDC auxiliary power supply conductors to the labeled power terminal block, confirming correct DC supply polarity before energizing.
- Terminate safety input device cabling onto designated screw terminals, utilizing twisted shielded wire pairs where electromagnetic field interference is present.
- Maintain physical separation between 24 VDC discrete safety signal lines and high-voltage AC power conductors inside cabinet wire channels.
Allen-Bradley 1791ES-IB16 CompactBlock Guard I/O Module
Allen-Bradley 1791ES-IB16 CompactBlock Guard I/O Module
The Allen-Bradley 1791ES-IB16, also cataloged as the 1791ES-IB16 Safety Digital Input Module, operates as a dedicated hardware component for discrete safety signal acquisition within EtherNet/IP platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1791ES-IB16 |
| Brand | Allen-Bradley |
| Origin | USA |
| Weight | 0.90 lbs (0.41 kg) |
| Dimensions | Standard CompactBlock Guard I/O profile |
| Operating Temp | Standard Allen-Bradley industrial operating range |
| Power Consumption | Standard 24 VDC system power draw |
| Module Type | Safety Digital Input Module |
| Channels | 16 safety inputs |
| Input Voltage | 24 VDC |
| Communication Network | EtherNet/IP (CIP Safety) |
| System Platform | CompactBlock Guard I/O |
Backplane Bus Communication Velocity and CIP Safety Network Determinism
The Allen-Bradley 1791ES-IB16 integrates 16 discrete safety input channels that communicate over EtherNet/IP networks running CIP Safety protocol to achieve high communication velocity and deterministic state monitoring. Designed to process safety inputs from devices such as emergency stops, safety switches, and light curtains, the module conducts continuous internal cross-checking and pulse test diagnostics to detect channel short circuits, wire breaks, and ground faults. Full firmware flash compatibility ensures synchronized cyclic safety data exchange with GuardLogix controllers without deterministic network latency.
Frequently Asked Questions
Q: What network protocol does the 1791ES-IB16 use to exchange safety data with the central PLC?
A: The module utilizes standard EtherNet/IP media running CIP Safety transport layer extensions to communicate deterministic safety state information with GuardLogix or CompactGuardLogix processors.
Q: Can the 16 safety input channels on the 1791ES-IB16 be configured for dual-channel sensor evaluation?
A: Yes, the input points can be configured in pairs within controller programming to support dual-channel safety devices up to SIL 3 / Category 4 / PLe requirements.
Field Installation Guidelines
- Mount the 1791ES-IB16 module securely onto a standard 35 mm DIN rail or directly to the enclosure backplate using mounting screws.
- Connect the 24 VDC auxiliary power supply conductors to the labeled power terminal block, confirming correct DC supply polarity before energizing.
- Terminate safety input device cabling onto designated screw terminals, utilizing twisted shielded wire pairs where electromagnetic field interference is present.
- Maintain physical separation between 24 VDC discrete safety signal lines and high-voltage AC power conductors inside cabinet wire channels.
