Description

GE IS220PRTDH1A Mark VIe RTD Input Pack Module

Technical Specifications

• Product Model: IS220PRTDH1A (336A4940CSP6)
• Brand: GE‑Vernova (GE Energy)
• Warranty: One Year
• Input Voltage: 24 V DC system rack supply, max 0.5 A consumption
• Operating Temperature: 0 °C ~ +65 °C
• Storage Temperature: ‑40 °C ~ +85 °C
• Response Time: Normal mode 250 ms; fast mode 40 ms channel scan cycle
• Protection Class: IP20 (rack‑mount I/O pack)
• Accuracy Class: ±0.1 °C (‑50 ~ +250 °C); ±0.2 °C full‑range accuracy
• Output Frequency: Not applicable
• Rated Current: Pulsed RTD excitation current 10 mA DC
• Input Channels: 8‑channel galvanically isolated RTD resistance temperature input
• Supported Sensor: Pt100, Pt1000, Cu10, Ni120; support 2/3/4‑wire sensor wiring
• Isolation Rating: 2500 V RMS channel‑to‑channel & channel‑to‑backplane isolation
• Communication: Dual redundant 10/100Mbps IONet Ethernet RJ45 ports for Mark VIe system bus
• Connector: DC‑37 field connector for mating with TRTDH1D / SRTD terminal boards
• Diagnostics: Sensor open‑circuit, short‑circuit detection, internal hardware self‑test; multi‑status LED indicators
• Manual Reference: GEH‑6721L
• Humidity: 5‑95 % RH, non‑condensing
• Weight: 0.38 kg
• Dimensions: 128 × 82 × 60 mm

Product Overview

The IS220PRTDH1A is an 8‑channel isolated RTD input I/O pack for GE Speedtronic Mark VIe turbine control systems. It acquires resistance signals from RTD temperature sensors and converts raw resistance values into digital temperature data for turbine‑control CPU processing, used for bearing temperature, casing temperature and process‑point temperature monitoring on gas‑turbine and steam‑turbine units.

Dual‑port redundant IONet Ethernet supports high‑reliability distributed I/O network communication. Galvanic isolation eliminates ground‑loop interference from field sensor circuits. It supports 2‑wire,3‑wire and 4‑wire RTD connection modes to adapt to different field‑wiring configurations. Comprehensive on‑board diagnostics report sensor faults and module internal hardware failures to the Mark VIe control system for predictive troubleshooting. Hot‑swap capable, it can be replaced while the turbine‑control rack stays online to reduce plant downtime. Original OEM production is mature status, widely available as refurbished / new‑old‑stock spare parts for power‑plant turbine‑control‑system maintenance and retrofit projects.

Application Notes

‑ Exclusively for GE Mark VIe / VIeS Speedtronic turbine‑control racks; must pair with matching TRTD series terminal boards. ‑ Hot‑swap operation is allowed only when rack remains powered; observe strict ESD anti‑static handling rules. ‑ Install inside well‑ventilated industrial cabinet; avoid dust accumulation and condensation. ‑ 4‑wire connection is recommended for high‑precision temperature‑measurement loops to eliminate lead‑resistance error. ‑ Verify hardware and firmware revision compatibility before spare‑part replacement. ‑ Follow GE official GEH‑6721L installation manual for wiring and commissioning steps. ‑ Typical deployment: thermal‑power plants, combined‑cycle power stations, refineries for gas‑turbine and steam‑turbine temperature‑measurement I/O spare‑part maintenance.