1734-IB8S 8-Channel Safety Input Module SIL3 | Allen-Bradley

The Original New Allen-Bradley 1734-IB8S 8-Channel Safety Input Module is a POINT Guard I/O safety device designed for SIL 3 / PLe rated machine safety systems using CIP Safety over EtherNet/IP networks, fully integrated with GuardLogix® controllers.

Core Engineering Highlights:
SIL 3 (IEC 61508) | PLe / Cat.4 | CIP Safety over EtherNet/IP | 8-channel 24V DC safety inputs | <16.2 ms response time

Key Features:

• Original New Allen-Bradley 1734-IB8S module

• 8-channel 24V DC safety sinking inputs

• 4 pulse test outputs for advanced diagnostic coverage

• POINT Guard I/O distributed safety system component

• Hot-swappable modular design for flexible maintenance

• Adjustable input filtering: 0–126 ms (in 6 ms increments)

• Built-in channel-level diagnostics for fault detection

• TÜV certified, UL and CE approved design

Applications:

• Emergency stop (E-Stop) systems

• Safety gate monitoring systems

• Light curtain safety integration

• Robotics safety zones

• Conveyor and packaging machinery safety control

• Industrial automation machine protection systems

Technical Specifications:

• Catalog Number: 1734-IB8S (Series A and B available)

• Module Type: Guard I/O Safety Module with 8 current sinking inputs and 4 current sourcing pulse test outputs

• Inputs: 8 (24V DC sinking)

• Pulse Test Outputs: 4 (current sourcing)

• Supply Voltage: 24V DC nominal (operating range 19.2–28.8V DC)

• Input Voltage Range: 11–30V DC

• Input Current (Max): 175 mA

• POINTBus Current (Max, No Load): 25 mA

• Power Dissipation (Max): 3.4 W (11.62 BTU/hr)

• Residual Voltage (Max): 0.3V

• Output Leakage Current (Max): 0.1 mA

• Short Circuit Protection: Yes

• Isolation Voltage: 50V (continuous), Basic Insulation Type between field side and system

• Input Filter Time (OFF to ON): 0–126 ms (in 6 ms increments)

• Reaction Time: < 16.2 ms

• Keyswitch Positions: Left: 8; Right: 1

• Indicators: 1 yellow lock status, 1 green/yellow power status, 8 I/O channel status indicators

• Dimensions (HxWxD): 77 x 25 x 55 mm (3.03 x 0.98 x 2.17 in.)

• Weight: 62.4 g (2.2 oz)

• Enclosure Type: Open-style (IP20)

• Wiring Category: 2

• Terminal Base Compatibility: 1734-TOP, 1734-TOPS, 1734-TOP3, 1734-TOP3S, 1734-TB

• Mounting: DIN Rail

• Operating Temperature: –20°C to +55°C

• Storage Temperature: –40°C to +85°C

• Max. Ambient Humidity (non-condensing): 95%

System Compatibility:

• Rockwell Automation GuardLogix controllers

• Compact GuardLogix controllers

• SmartGuard 600 controllers

• POINT I/O EtherNet/IP adapters (1734-AENT, 1734-AENTR)

• POINT I/O backplane systems

• EtherNet/IP industrial networks

• CIP Safety-enabled safety architectures

Related Products:

• 1734-OB8S – Safety output expansion module for actuator control

• 1734-IE4S – Analog safety input module for process monitoring

• 1734-OBV2S – Safety digital output module for POINT Guard I/O systems

• 1734-IB8SK – Conformal coated version for harsh environments

• 1734-TOP / 1734-TB – Terminal base for field wiring

• 1734-AENTR – EtherNet/IP adapter for distributed POINT I/O systems

PLC ERA is an independent industrial automation distributor supplying 100% genuine Original New products through established global supply channels. Allen-Bradley, POINT Guard I/O, GuardLogix, and CIP Safety are trademarks of Rockwell Automation.