GE IS220PAOCH1A PAO Analog Output Module

Description

Hardware & Electrical Specifications

‑ Model：IS220PAOCH1A ‑ Part Number：IS220PAOCH1A ‑ Module Type：PAO Analog Output Module ‑ Mounting：Installed in Mark VIe I/O pack rack ‑ Power supply：24 VDC field power supplied via I/O pack backplane ‑ Output channels：8 independent isolated current output channels, 0‑20 mA (4‑20 mA configurable), maximum load impedance 900 Ω, output accuracy ±0.5% ‑ On‑board feature：Each channel equipped with current feedback ADC for real‑time output monitoring ‑ Communication interfaces：   • Dual redundant IONet RJ45 Ethernet ports for communication with system controller   • DC‑37‑pin connector for connection to matching analog output terminal board ‑ Compatible terminal boards：TBAOH1C, STAOH1A, STAOH2A ‑ PCB treatment：Conformal coated for dust‑moisture‑corrosion resistance ‑ On‑board protection：ESD protection, MOV surge suppression, channel galvanic isolation, over‑current / open‑circuit / short‑circuit self‑diagnosis circuit ‑ Compatibility note：Cannot run standalone; must match Mark VIe I/O pack rack and corresponding controller hardware; full signal‑loop simulation test mandatory after replacement.

Environmental Specifications

‑ Operating temperature：‑40 ℃ ~ +70 ℃ ‑ Storage temperature：‑40 ℃ ~ +85 ℃ ‑ Relative humidity：5%‑95% non‑condensing ‑ Installation location：Indoor turbine control cabinet ‑ EMC compliance：IEC 61000‑6‑2 ‑ Certifications：CE

Mechanical Data

‑ Weight：approx 0.38 kghoneywell-… ‑ Dimension：Standard Mark VIe I/O pack module form‑factor ‑ Handling note：ESD‑sensitive PCB; analog output drive circuit, anti‑static wrist‑strap mandatory during handling ‑ Terminal tightening torque：0.6‑1.0 N·m

Main Functions

1. Receive digital control set‑point commands from Mark VIe main controller via IONet bus.
2. Convert digital values to precise 0‑20 mA / 4‑20 mA analog current output to drive field control valves and actuators.
3. Real‑time feedback sampling of each output channel current value, upload actual output status to controller.
4. Continuous self‑diagnosis for every output channel, detect open‑circuit, short‑circuit, over‑load and module hardware faults, and report fault alarm status.
5. LED status indication:   ‑ Green LED：Module power supply normal / RUN status   ‑ Yellow LED：Channel signal / IONet link activity indicator   ‑ Red LED：Module FAIL / channel fault alarm

Installation & Wiring Requirements

1. Cut off I/O pack rack power supply before replacement. Hot‑swap is forbidden. Strict anti‑static protection when handling PCB board.
2. Insert module into designated slot of I/O pack rack, lock module latch to ensure reliable backplane contact.
3. Field analog output signal wiring strictly follow GE Speedtronic Mark VIe wiring manual; signal cables shall be separated from high‑power cables; connect shielding to dedicated ground terminal.
4. Complete protective grounding according to GE system specification.
5. After replacement: verify I/O pack power‑on status, check each channel output value, perform analog‑loop commissioning test.
6. Replacement note: For TMR triple‑redundant system application, hardware consistency and firmware‑version matching shall be verified; full signal‑loop simulation test mandatory before unit put‑into‑service.