Description

IS220PTURH1B PTUR Primary Turbine Trip I/O Pack

Technical Specifications

• Product Model: IS220PTURH1B
• Brand: GE Vernova (Mark VIe Speedtronic series)
• Warranty: One Year
• Input Voltage: Nominal 28 VDC IONet pack power; max 0.41 A DC consumption
• Operating Temperature: ‑40 °C ~ +70 °C cabinet‑mount; ATEX Zone2 / Class I Div2 certified
• Storage Temperature: ‑40 °C ~ +85 °C
• Response Time: High‑speed magnetic‑pickup pulse acquisition; hardware overspeed trip response <15 ms
• Protection Class: IP20 industrial I/O pack; cabinet‑only installation, not for direct field mounting
• Accuracy Class: High‑precision speed‑pulse measurement; dedicated turbine‑trip hardware logic
• Output Frequency: 0‑25 kHz pulse input bandwidth for magnetic pickup speed sensors
• Rated Current Range: Speed‑input signal range‑15 V ~ +15 VDC; E‑stop input rated 16‑140 VDC; trip‑relay contact rating 7 A DC max
• Communication Interface: Dual 10/100 Mbps IONet Ethernet ports; front‑panel PWR / LINK / ACT / ATTN LED indicators; 62‑pin mating connector for termination board
• Supported Protocols: GE IONet real‑time control bus; compatible with UCS‑series main controller e.g. IS420UCSCH1B; supports simplex, dual‑redundant and TMR 2‑out‑of‑3 voting architectures
• Overload Capacity: Hardware overspeed‑trip logic independent of controller software; channel‑level diagnostics; transient‑voltage suppression; watchdog fault‑safe circuit
• Dimensions: Standard Mark VIe IONet I/O pack footprint; weight approx 0.4‑0.8 kg

Product Overview

The IS220PTURH1B (PTUR) is a turbine‑specific primary trip I/O pack for GE Mark VIe / Mark VIeS distributed turbine‑generator control systems. It accepts up to four magnetic‑pick‑up speed‑sensor inputs for shaft‑speed measurement, overspeed detection and axial‑thrust position monitoring. It also processes emergency‑stop, hardware‑trip discrete signals and drives hard‑wired trip relays via matched termination board IS200TTURH1CFD. Embedded hardware‑level trip logic can execute turbine trip action independent of main controller software, improving safety integrity for turbine protection loops.

This I/O pack addresses critical turbomachinery‑control challenges: hardware‑backed overspeed protection, multi‑channel speed‑sensor signal acquisition, and drop‑in spare‑part compatibility for legacy Mark VIe retrofit projects. Dual‑Ethernet IONet ports provide redundant network communication path to main controller. Turbine‑control engineers, power‑plant maintenance technicians and safety‑system retrofit integrators benefit most. It applies for gas‑turbine, steam‑turbine and combined‑cycle unit overspeed‑protection, thrust‑monitoring and emergency‑trip safety‑loops in utility and petrochemical power‑plants. (Word count:178)

Key Application Notes

• Must pair with dedicated termination board IS200TTURH1CFD; must connect to UCS‑series controller e.g. IS420UCSCH1B; cannot run standalone
• Dedicated for magnetic‑pick‑up speed sensors; receives raw pulse signals from probes such as 21500‑00‑12‑10‑02
• Supports TMR 2‑out‑of‑3 voting overspeed‑trip; jumper configuration on termination board shall match system redundancy architecture
• Not hot‑swap capable: power must be removed before pack replacement
• Hardware overspeed trip path operates independent of control‑software; provides critical backup safety protection
• No intrinsic‑safety rating; pack installs in safe‑area / Zone 2 cabinet only; field‑side wiring must comply with API‑670
• Conformal‑coated PCB variant available for high‑humidity and high‑contaminant cabinet environments
• Origin USA; widely used spare for turbine‑generator maintenance and retrofit projects