Allen-Bradley 1734-IB8SK Safety Input Module, 8 Channels

Product Overview

The 1734-IB8SK is a digital safety input module from Allen-Bradley. This module belongs to the POINT Guard I/O series. It features eight sinking input channels. The input voltage range is 11 to 30 VDC. Conformal coating protects the module in harsh environments. It includes four pulse test outputs. These outputs work with T0, T1M, T2, and T3M sources. The 1734-IB8SK meets safety levels SIL 3 and SIL 4. It also complies with Category 3 and 4. The input type is Type 3 per IEC 61131-2. Reaction time is less than 16.2 milliseconds. Minimum on-state current is 3.3 mA. Maximum off-state current is 1.3 mA.

Application Scenarios

Engineers use this module for safety applications. It connects to emergency stop buttons. It works with safety light curtains. It also connects to gate switches. The 1734-IB8SK distributes safety I/O along GuardLogix controllers. It also works with Compact GuardLogix and Smart Guard systems. Conformal coating makes it ideal for corrosive environments. This module suits applications requiring high safety integrity.

Technical Specifications

Input supply voltage: 11-30 VDC. Input configuration: sinking. Number of inputs: eight. Pulse test output current per channel: 0.7 A maximum. Total pulse test output current: 2.8 A at 40 degrees C. Compatible controllers: GuardLogix, Compact GuardLogix, Smart Guard. Safety level: SIL 3, SIL 4, Category 3, Category 4. Conformal coating: yes. Input reaction time: less than 16.2 ms. Minimum on-state current: 3.3 mA. Maximum off-state current: 1.3 mA. Module type: discrete safety input. Terminal base: 8-point terminal base.

Installation & Maintenance Guide

Mount the module onto an 8-point terminal base. Connect field wiring to the base terminals. Power comes from the backplane via an adapter or expansion power supply. No separate field bus power is required. Wire pulse test outputs in current sourcing configuration. Ensure proper polarity for sinking inputs. Set input on and off delays individually per channel. Use single or dual channel operation as needed. Regularly check connections in harsh environments. Replace module if conformal coating shows damage.

Packing List

One 1734-IB8SK safety input module. One installation manual. Optional: terminal base (ordered separately). No additional accessories included.