Description

IS220PHRAH1A PHRA HART Analog I/O Pack

Technical Specifications

• Part Number: IS220PHRAH1A
• Brand: GE Vernova (Mark VIe Speedtronic series)
• Warranty: One Year
• Input Voltage: 28 VDC nominal IONet I/O‑pack power; max consumption 10 W
• Operating Temperature: ‑30 °C ~ +65 °C cabinet‑mount; ATEX Zone2 / Class I Div2 certified
• Storage Temperature: ‑40 °C ~ +85 °C
• Response Time: Deterministic analog sampling cycle synchronized with IONet control network
• Protection Class: IP20 compact I/O pack; cabinet‑only installation; black metal housing with ventilation slots
• Accuracy Class: 16‑bit ADC for analog inputs; 14‑bit DAC for analog outputs; supports HART 7 bi‑digital superimposed communication on 4‑20 mA loops
• IO Channel: 10‑channel multi‑mode analog input (4‑20 mA / ±5 V / ±10 V); 2‑channel analog output (0‑20 mA / 4‑20 mA)
• Rated Current Range: 4‑20 mA loop drive; per‑channel over‑voltage & short‑circuit protection; no channel‑to‑channel galvanic isolation
• Communication Interface: Dual 10/100 Mbps Ethernet IONet ports; IR service port; front‑panel LED indicators (PWR, LINK, ACTN, ATTENTION); high‑density 62‑pin connector for external termination board mating
• Supported Protocols: GE IONet real‑time control bus; HART 7; compatible with UCS‑series main controllers; simplex / dual‑redundant / TMR architectures supported
• Overload Capacity: Hardware watchdog; comprehensive channel‑diagnostics (open‑loop, short‑loop, out‑of‑range); ESD / transient‑voltage suppression
• Dimensions: Standard Mark VIe IONet I/O‑pack footprint; weight approx 0.6‑0.8 kg

Product Overview

The IS220PHRAH1A is a distributed HART‑capable analog I/O pack for GE Mark VIe turbine‑generator control systems. It acquires analog process signals from smart HART transmitters for pressure, flow and temperature measurements, and outputs 4‑20 mA modulating commands to valve positioners and I/P converters. Built‑in HART modem enables bi‑directional communication over existing 4‑20 mA wiring for remote smart‑transmitter configuration, diagnostic reading and device status retrieval without extra field‑bus cables. Embedded local processor handles signal conditioning, fault‑diagnostics and time‑stamping before data transmission over redundant IONet Ethernet to UCS main controller.

This I/O pack addresses distributed‑control challenges: native HART integration for smart field instruments, mixed analog‑input‑and‑output within single compact pack, and drop‑in spare‑part compatibility for legacy Mark VIe retrofit‑maintenance projects. Turbomachinery‑control engineers, power‑plant maintenance technicians and system‑retrofit integrators benefit most. It pairs with PHRA‑series termination boards, and applies for gas‑turbine, steam‑turbine, combined‑cycle plant process‑monitoring and modulating‑control loops.

Key Application Notes

• Must connect to Mark VIe UCS‑series main controller and matched external termination board; cannot operate standalone
• IS220PHRAH1B is the direct upgraded replacement part for IS220PHRAH1A, form‑fit‑function compatible spare
• HART communication shares same 4‑20 mA physical wiring; no separate cabling required for smart‑instrument diagnostics
• Not hot‑swap capable: power supply must be removed before pack replacement
• No onboard field‑wiring terminals; all field‑cable terminations reside on separate external termination hardware
• Conformal‑coated PCB variant available for high‑humidity, high‑contaminant cabinet environments
• Configuration, calibration and HART‑device access implemented by ControlST engineering software
• Origin: USA; widely‑used spare for power‑plant turbine‑control maintenance‑retrofit projects