1C31181G01 high-reliability analog output module

1C31181G01 is a high-reliability analog output module developed by Westinghouse (now integrated into Emerson Automation Solutions) for its Ovation Distributed Control System (DCS). It is designed to convert digital control signals from the Ovation DCS into continuous analog output signals (e.g., current, voltage), enabling precise control of industrial field actuators such as control valves, variable-frequency drives (VFDs), and regulators—critical for fine-tuning parameters in process industries. Below is its detailed information:

1. Core Technical Specifications

Parameter Category	Specific Details
Output Channels	8 independent isolated analog output channels; each channel is electrically isolated from others and the system backplane to eliminate cross-interference, ensuring signal stability for actuators.
Supported Output Signals	- Primary: 4–20mA DC current signals (the most common industrial standard, suitable for long-distance transmission and driving control valves/VFDs).- Secondary: 0–10V DC voltage signals (for low-power actuators like small regulators or analog displays).- Signal resolution: 12 bits (ensures precise control with minimal output deviation).
Output Accuracy	- At 25°C (ambient temperature): ±0.1% of full scale (FS) for 4–20mA signals; ±0.2% of FS for 0–10V signals—meeting high-precision control needs for key processes (e.g., reactor temperature, pipeline flow).- Temperature drift: ±0.002% FS/°C (in -40°C to 70°C), minimizing accuracy loss caused by environmental temperature changes.