Product Summary
The 1734-IB8SK is a conformally coated safety digital input module with eight sinking channels. This module supports 11-30 VDC input voltage and includes four pulse test outputs. It meets SIL 3/4 and Category 3/4 for critical safety applications. Engineers rely on this module for robust monitoring in GuardLogix systems.
Product Procurement Guide
Procurement teams need a module that delivers certified safety while reducing hazardous environment risks. The 1734-IB8SK meets both demands with its conformal coating and SIL 3/4 compliance. This coating protects against moisture and corrosive gases. Your application benefits from extended lifespan in harsh conditions.
The module operates with an input voltage range of 18-30 VDC and a minimum on-state current of 3.3 mA. It uses an 8-point terminal base for quick wiring. Each of the eight channels supports sinking configuration. This matches standard safety devices like emergency stops and light curtains.
Four pulse test outputs drive currents up to 0.7 A per channel. The total output current peaks at 2.8 A at 40°C. These outputs work with sources T0, T1M, T2, and T3M. This flexibility simplifies integration into existing safety architectures.
Compatibility is broad. The 1734-IB8SK works with GuardLogix, Compact GuardLogix, and Smart Guard controllers. It supports single or dual channel operation. This reduces the need for multiple part numbers. Procurement managers can standardize on one module for various safety tasks.
Expert Technical Evaluation
Engineers require precise reaction times for safety loops. The 1734-IB8SK delivers an input reaction time of <16.2 ms. This meets the speed demands of Category 3 and 4 systems. The module is Type 3 per IEC 61131-2. This ensures reliable signal detection even with leakage currents.
The off-state maximum voltage is 5 VDC, and off-state current is 1.3 mA. These values prevent false triggering. The digital inputs are individually configurable for on and off delays. This allows fine-tuning for different sensor characteristics.
Conformal coating adds a protective layer against chemical exposure. The module draws power from the system backplane, with optional field bus power supply support. This reduces external wiring complexity. Thermal performance is stable up to 40°C ambient.
The pulse test outputs use current sourcing wiring. Each output can drive up to 0.7 A. The module performs self-testing via these outputs to validate input integrity. This enhances overall safety system reliability.
