1C31203G01 digital input module

1C31203G01 is a digital input module developed by Westinghouse (now integrated into Emerson Automation Solutions) for its Ovation Distributed Control System (DCS). It specializes in collecting discrete digital signals from industrial field devices and transmitting them to the DCS for real-time status monitoring and logic interlock control, making it a key component for discrete signal acquisition in harsh industrial environments. Below is its detailed information:

1. Core Technical Specifications

Parameter Category	Specific Details
Input Channels	16 independent discrete input channels, divided into 4 isolation groups (4 channels per group) to minimize cross-interference between different device signals.
Supported Input Signals	- Dry contact signals: Compatible with normally open (NO) / normally closed (NC) mechanical switches (e.g., limit switches, relay contacts).- DC voltage signals: 24V DC (typical), with "on" threshold ≥18V DC and "off" threshold ≤5V DC, adapting to most industrial discrete signal standards.
Input Response Time	≤1ms (fast enough to capture transient switching signals such as emergency stop triggers, ensuring timely DCS response to critical status changes).
Input Current	≤10mA per channel (low power consumption, avoiding overload of field sensors and reducing energy waste).
Power Supply	24V DC ±10% (power consumption ≤5W), fully compatible with Ovation DCS rack power modules (e.g., 1C31234G01), adapting to voltage fluctuations in industrial power grids.
Isolation Rating	- Group-to-group isolation: ≥600V AC (1 minute).- Module-to-backplane isolation: ≥2500V AC (1 minute), effectively suppressing ground loops and electromagnetic interference (EMI) in complex industrial environments.
Physical & Environmental Parameters	- Dimensions: Standard Ovation module form factor, approx. 100mm × 80mm × 45mm (L×W×H); weight ~0.3kg, suitable for dense rack installation.- Operating temperature: -40°C to 70°C (adapts to high-temperature workshops, outdoor control cabinets, etc.).- Storage temperature: -40°C to 85°C.- Relative humidity: 5%–95% RH (non-condensing), preventing moisture damage to internal circuits.