The GE IS220PAOCH1B is a high-performance analog output I/O pack engineered for the Mark VIe Distributed Control System (DCS). This module serves as the primary interface between the control software and field-level actuators, providing eight channels of precision 0-20 mA current signals. Utilizing advanced 16-bit digital-to-analog conversion (DAC), the pack ensures high-resolution signal generation necessary for critical valve positioning, turbine control, and process automation tasks.
Diagnostic Monitoring and Safety
- Thermal Management: Integrated temperature sensors with automated alert thresholds to protect the internal triple-board circuitry.
- Output Isolation: Mechanical relays with visual LED status indicators for positive output enable/disable control.
- Network Reliability: Dual RJ45 Ethernet ports for redundant IONet communication.
- Maintenance Tools: Infrared (IR) diagnostic ports for local troubleshooting and status verification.
Technical Performance Data
| Specification | Details |
| Output Channels | 8 Simplex (0-20 mA) |
| Conversion Resolution | 16-bit DAC |
| Accuracy | ±0.5% of full scale |
| Operating Temperature | -30°C to 65°C (-22°F to 149°F) |
| Compliance Voltage | 18 V DC |
| Network Interface | Dual 100Base-TX RJ45 Ethernet |
| Connector Type | DC-37 Pin (Output Interface) |
| Compatible Boards | TBAOH1C and STAO Terminal Boards |
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