GE IS220PAICH1A Analog I/O Pack for Mark VIe Turbine Control System, IONet Distributed I/O Module

Description

GE IS220PAICH1A Analog I/O Pack for Mark VIe Turbine Control System, IONet Distributed I/O Module

Product Details

The IS220PAICH1A (alias 336A4940CSP3) is distributed analog I/O pack for GE Speedtronic Mark VIe turbine control system. Origin: USA. Lifecycle status: EOL discontinued, no OEM new production; market supply includes NOS surplus and fully‑tested refurbished units for power‑plant turbine maintenance.

It connects to Mark VIe controller via redundant IONet Ethernet fieldbus, handles analog input and analog output signals for turbine auxiliary monitoring and control. Power supply: 27.4‑28.6 VDC (nominal 28VDC). Operating temperature: ‑30℃ ~ +65℃ (‑22℉ ~149℉). Dual RJ45 Ethernet ports for redundant IONet bus, IR local configuration port, multi‑LED status indicators (PWR, ATTN, LINK). Mates with TBAI / STAI external terminal board for field wiring connection. Certifications: UL, ATEX Class I Div.2 Groups A,B,C,D for hazardous cabinet installation. Weight approx 0.36 kg. Hardware revision must match during replacement.

Applications

‑ Gas / steam turbine Mark VIe control system distributed analog signal acquisition ‑ Power‑plant turbine pressure, temperature, flow 4‑20mA / voltage signal processing ‑ Combined‑cycle power plant turbine‑control cabinet spare‑part replacement ‑ Petrochemical critical turbo‑machinery control system maintenance ‑ Hazardous‑area turbine I/O signal interface (Class I Div.2 certified) ‑ Retrofit and component swap for legacy Mark VIe IONet I/O racks ‑ Spare inventory for power‑plant turbine‑control maintenance department

IS220PAICH1A 336A4940CSP3

Related Series Models (6+)

1. IS220PAOCH1A (Analog‑Output‑only I/O pack)
2. IS220PDIAH1A (Discrete‑Input IONet pack)
3. IS220PDOAH1A (Discrete‑Output IONet pack)
4. IS220PPROH1A (Mark VIe main controller)
5. IS220YDIAS1A (Mixed discrete‑analog I/O pack)
6. TBAI terminal board (matching field terminal assembly)
7. IS220UCSAH1A (Mark VIe controller CPU module)

Key Features

1. Distributed analog I/O pack for Mark VIe turbine system, communicates over redundant IONet Ethernet bus.
2. Integrates analog input and output channels for turbine process‑variable measurement and actuator drive.
3. Dual Ethernet ports support bus redundancy, improve communication reliability for critical turbine control loop.
4. IR local port for on‑site module commissioning and diagnostic access.
5. Class I Div.2 hazardous‑location certification, suitable for power‑plant and refinery cabinet environments.
6. Powered by 28VDC auxiliary power, multiple front‑panel LED for power, fault and network diagnostic indication.
7. Requires matching TBAI / STAI external terminal board for field instrument wiring termination.
8. Manufactured in USA; EOL obsolete, only NOS or fully‑tested refurbished spare‑parts available.

IS220PAICH1A 336A4940CSP3

Main Functions

1. Acquire analog signals (4‑20 mA, voltage) from field transmitters of turbine pressure, temperature and flow.
2. Output analog control signals to positioners, valves and actuators for turbine auxiliary loop regulation.
3. Realize bidirectional high‑speed data exchange with Mark VIe main controller via redundant IONet fieldbus.
4. Channel‑level hardware self‑diagnosis; detect wiring fault, module failure and report alarm to turbine HMI.
5. Support software fault‑tolerant SIFT voting logic when working under TMR triple‑modular‑redundant configuration.
6. IR port supports local parameter setting, fault log reading for on‑site commissioning and troubleshooting.
7. Cooperate with terminal board to realize signal isolation and surge protection for field instruments.
8. Serve as distributed analog signal interface unit for GE Mark VIe gas‑steam turbine control system.