1C31181G02 high-precision analog output module

1C31181G02 is a high-precision analog output module developed by Emerson (originally Westinghouse) for its Ovation Distributed Control System (DCS). It is specialized in converting digital control signals from the Ovation controller into stable analog output signals, which are used to drive field actuators (such as control valves, frequency converters, and regulators) in industrial processes. With high output accuracy, strong anti-interference performance, and reliable operation, it is a core component for precise process control in harsh industrial environments. Below is its detailed information:

1. Core Technical Specifications

Parameter Category	Specific Details
Output Channel Configuration	8 independent isolated analog output channels; each channel is electrically isolated from others and the system backplane, eliminating cross-interference and ensuring signal stability.
Supported Output Signals	- Primary signals: 4–20mA DC (standard industrial current signal, load resistance 0–600Ω); 0–10V DC (voltage signal, load resistance ≥1kΩ).- Configurable options: 0–5V DC, 1–5V DC via Ovation Control Studio software (no hardware modification required), adapting to different types of field actuators.
Output Accuracy & Stability	- 4–20mA DC: ±0.1% of full scale (FS) at 25°C; ±0.2% FS over the operating temperature range (-40°C to 70°C).- 0–10V DC: ±0.1% FS at 25°C; ±0.2% FS over the operating temperature range.- Temperature drift: ±0.001% FS/°C (minimizes accuracy loss caused by ambient temperature changes in control cabinets).- Long-term stability: ≤±0.1% FS/year (reduces calibration frequency and maintenance costs).
Response Performance	- Settling time: ≤10ms (from 0% to 100% FS), ensuring rapid response to control command adjustments (critical for dynamic process control, e.g., flow regulation of chemical reactors).- Update rate: 100 updates per second per channel (real-time synchronization with controller output commands).
Power Supply & Consumption	- Input voltage: 24V DC ±10% (supplied by Ovation rack power modules, e.g., 1C31234G01).- Power consumption: ≤6W (normal operation), low heat generation suitable for dense rack installation.