Product Overview
The Allen-Bradley 1734-IB8SK is a POINT Guard I/O safety input module designed for distributed safety applications. This industrial automation module provides eight (8) safety discrete input channels with sinking configuration, making it ideal for monitoring emergency stops, safety gates, and light curtains. With conformal coating and compliance to SIL 3, it delivers reliable performance in demanding environments.
Key Features & Benefits
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8 Safety Inputs: Sinking input channels for flexible wiring to safety devices.
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Conformal Coating: Protects against moisture, dust, and corrosive atmospheres, extending service life.
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Pulse Test Outputs: Four (4) current sourcing outputs (T0, T1M, T2, T3M) enable open-wire detection.
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Safety Compliance: SIL 3 / 4, Category 3 and 4, suitable for high-risk machinery.
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Fast Response: Input reaction time less than 16.2 ms for quick safety reactions.
Technical Specifications
| Parameter |
Value |
| Manufacturer |
Allen-Bradley / Rockwell Automation |
| Series |
POINT Guard I/O |
| Part Number |
1734-IB8SK |
| Product Type |
Digital Safety Input Module |
| Number of Inputs |
8 (sinking) |
| Input Voltage Range |
18-30 VDC |
| Minimum On-state Current |
3.3 mA |
| Maximum Off-state Current |
1.3 mA |
| Input Reaction Time |
< 16.2 ms |
| Terminal Base Type |
8-Point Terminal Base |
| Pulse Test Outputs |
4 (current sourcing) |
| Pulse Test Output Current (per channel) |
0.7 A max |
| Pulse Test Output Current (per module) |
2.8 A @ 40°C |
| Compatible Controllers |
GuardLogix, Compact GuardLogix, Smart Guard |
| Safety Level Compliance |
SIL 3 / 4; Cat. 3 and 4 |
| Conformal Coating |
Yes |
Industry Applications
The Allen-Bradley 1734-IB8SK excels in safety-critical processes across automotive, packaging, and material handling industries. For example, in a robotic work cell, this module monitors safety interlock switches and e-stop buttons, ensuring rapid machine stop when a guard is opened. In conveyor systems, the 1734-IB8SK connects to light curtains and pressure-sensitive mats, providing reliable personnel protection while maintaining high throughput.
Installation & Setup
Mount the 1734-IB8SK onto a compatible 8-point terminal base and connect it to the POINT Guard I/O backplane. Wire safety devices to the input terminals using a sinking configuration. Configure the pulse test outputs (T0, T1M, T2, T3M) to match your field wiring for open-circuit detection. The module receives power from the backplane via an adapter or expansion power supply; a separate field power supply is optional.
Maintenance & Reliability
Inspect the module periodically for dust accumulation or corrosion, especially in harsh environments—the conformal coating reduces risk. Verify input wiring and pulse test connections during routine safety checks. With no moving parts and a robust design, the 1734-IB8SK offers long service life, minimizing downtime and replacement costs.
Compatible Systems
This module integrates seamlessly with GuardLogix, Compact GuardLogix, and Smart Guard controllers. It is part of the Rockwell Automation POINT Guard I/O family, allowing distributed safety I/O placement near the machine. Use with 1734 series terminal bases and adapters for a complete safety system.
Buying Guide
Before purchasing, verify your system's power requirements and terminal base compatibility. Ensure the input voltage range (18-30 VDC) matches your field sensors. For guaranteed authentic Allen-Bradley 1734-IB8SK modules with fast shipping, choose PLC Source PRO as your trusted supplier.