1C31205G01 high-reliability digital input module

1C31205G01 is a high-reliability digital input module developed by Emerson (originally Westinghouse) for its Ovation Distributed Control System (DCS). It is specialized in collecting discrete status signals from industrial field devices (such as switches, sensors, and relay contacts) and transmitting them to the Ovation controller in real time. With strong anti-interference performance and stable signal acquisition capabilities, it is a core component for on-site status monitoring in harsh industrial environments. Below is its detailed information:

1. Core Technical Specifications

Parameter Category	Specific Details
Input Channel Configuration	16 independent optically isolated digital input channels, divided into 4 isolation groups (4 channels per group). Optical isolation design eliminates cross-interference between channels and between the module and the system backplane.
Supported Input Signals	- Signal Type: Dry contact signals (normally open/NO, normally closed/NC) for mechanical switches (e.g., limit switches, emergency stop buttons, relay auxiliary contacts); wet contact signals (24V DC standard).- Input Voltage Range: 18–30V DC (wide-range adaptation to industrial power fluctuations).- Input Threshold: "On" threshold ≥18V DC, "Off" threshold ≤5V DC (avoids misjudgment caused by voltage drift).- Input Current: ≤8mA per channel (low power consumption, reducing load on field signal sources).
Response & Filtering	- Input Response Time: ≤2ms (captures transient signals like emergency stops in real time, ensuring timely DCS feedback).- Debounce Time: Configurable (1ms–100ms) via Ovation Control Studio software, filtering out contact bounce noise from mechanical switches.
Power Supply & Consumption	- Input Voltage: 24V DC ±10% (supplied by Ovation rack power modules, e.g., 1C31234G01).- Power Consumption: ≤4W (normal operation), low heat generation to adapt to dense rack installation.