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TECHNICAL SPECIFICATIONS:
Part Number: IS220PTURH1B, REV E
Manufacturer: General Electric (GE)
Series: Speedtronic Mark VI
Functional Acronym: PTUR
Product Type: Turbine Specific Primary Trip I/O Pack / Module
Hardware Revision: REV E
Processor Core: Onboard high-speed processor board coupled with an analog acquisition subsystem
Operating Modes: Simplex and Triple Modular Redundant (TMR) structural layouts
Nominal Input Voltage: 28.0 V DC Nominal (27.4 V DC to 28.6 V DC operating range)
Maximum Current Consumption: 0.41 A DC maximum continuous draw
Primary Speed Inputs: 4 magnetic pickup (MPU) or active speed sensor lines (-15 V to +15 V DC range)
Voltage Detection Inputs: 16 V DC to 140 V DC range (TRPA interface)
E-Stop Input Voltage Range: 18 V DC to 140 V DC, maximum sensing threshold
E-Stop Power Output: 28 V DC open-circuit output voltage
Contact Output Rating: 24 V DC to 28 V DC active range / 7 A DC maximum continuous load
Network Interfacing: Dual redundant 10Base-T/100Base-TX RJ-45 Ethernet ports (IONet links)
Circuit Board Coating: Premium Conformal Coating for environmental insulation
Diagnostic Port: Front-panel Infrared (IR) diagnostic interface port
Ambient Temperature Rating: -30°C to +65°C (-22°F to +149°F) continuous operational range
Repair Lead Time: 3–5 Business Days
Availability: In Stock / Repair & Exchange Available
Country of Origin: United States
The IS220PTURH1B, REV E is a Primary Trip I/O Module designed and manufactured by General Electric for the Speedtronic Mark VI control frameworks. The Turbine Specific Primary Trip (PTUR) I/O pack provides the electrical interface between one or two I/O Ethernet networks and a turbine control terminal board. The PTUR contains a processor board common to the distributed I/O packs, a board specific to the turbine control function, and an analog acquisition daughterboard. The I/O pack plugs into the TTURHIC terminal board and handles four speed sensor inputs, bus and generator voltage inputs, shaft voltage and current signals, eight flame sensors, and outputs to the main breaker. Input to the pack is through dual RJ-45 Ethernet connectors and a three-pin power input.
Output is through a DC-62 pin connector that connects directly with the associated terminal board connector. Visual diagnostics are provided through indicator LEDs. As an alternative to TTURHIC, three PTUR I/O packs can be plugged directly into a TRPAHIA terminal board. This arrangement handles four speed inputs per PTUR, or fans the first four inputs into all three PTURS. Two solid-state primary trip relays are provided by the TRPA. This arrangement does not support bus and generator voltage inputs, shaft voltage or current signals, flame sensors, or main breaker output. For simplex applications, the STUR terminal boards can be used.
PRIMARY PROTECTION & SPEED SENSING INTERFACES
The hardware architecture consolidates crucial turbine monitoring signals directly onto its acquisition layer. It natively samples input from up to four high-speed turbine shaft speed sensors (such as passive magnetic pickups or active proximity probes). The module monitors these frequencies with near-zero latency, comparing physical wheel RPMs against programmed overspeed setpoints to command primary breaker or trip solenoid overrides instantly if a hazardous mechanical runaway state occurs.
VOLTAGE MONITORING & BREAKER OVERRULE TRACES
The IS220PTURH1B, REV E monitors bus and generator voltage metrics, shaft current/voltage profiles, and local flame sensors. This comprehensive data matrix allows the pack to safely validate synchronization conditions before completing circuit breaker closures. The integrated high-current contact outputs are rated up to 7 A continuous, providing the muscle required to actuate massive field-side emergency dump valves and trip relays directly via the underlying terminal infrastructure.
INSTALLATION:
ANALOG INPUT HARDWARE
The PTUR I/O pack contains circuits to convert pulse rate inputs to digital speed. Generator and bus voltages are brought into PTUR for automatic synchronizing in conjunction with the turbine controller and GE excitation system. TTUR has permissive generator synchronizing relays and controls the main breaker relay coil 52G. Shaft voltage is picked up with brushes and monitored along with the current to the machine case. PTUR alarms high voltages and tests the integrity and continuity of the circuitry. In TMR applications, there are separate sets of four speed inputs for each PTUR, R, S, and T. All other inputs fan to the three PTUR I/O packs. Control signals from R, S, and T are voted before they actuate permissive relays K25 and K25P. Relay K25A is controlled by the PPRO. All three relays have two normally open contacts in series with the breaker's close coil.
WHY PARTNER WITH WORLD OF CONTROLS
World of Controls provides the industry's most dependable logistics and technical infrastructure for critical turbine control networks. We maintain an extensive inventory of genuine OEM replacement parts for GE Speedtronic control setups, minimizing operational downtime during emergency outages. Every item, from certified unused surplus to fully rebuilt industrial components, is subjected to strict simulation profiling in our advanced electronics lab and is supplied with a comprehensive product warranty. Our global engineering support network operates 24/7 to deliver troubleshooting advice, component replacement guidance, and component testing evaluations. Contact the WOC sales team directly via phone or email for current pricing, hardware availability, or repair quotes.
What is the GE IS220PTURH1B, REV E?
The IS220PTURH1B, REV E is a Primary Trip I/O Module manufactured by General Electric for its Mark VIe turbine control platform. It is a specialized, distributed communication module designed to bridge data streams between third-party PROFIBUS DP field networks and the internal Ethernet-based input/output network (IONet) of the turbine control system.
What are the voltage parameters and fault detection mechanisms for the E-Stop circuit?
The PTURH1B, REV E pack outputs a stable 28 V DC open-circuit reference voltage to supply power to the physical field-side E-Stop circuit. The module's internal diagnostic monitoring circuitry samples returning voltage loops across a wide 18 V DC to 140 V DC range, automatically flagging open-loop configurations or contact resistance abnormalities if levels drift from safety standards.
How does the PTURH1B, REV E pack handle generator and bus voltage sensing for synchronization check (K25)?
When paired with a terminal board like the TRPA, the PTUR samples primary phase-voltage waveforms via Potential Transformers within a 16 V DC to 140 V DC range. The onboard logic analyzes phase slip angle, frequency mismatch, and voltage scale differences, validating synchronization parameters before energizing the 24–28 V DC contacts to drive external breaker closure circuits.
What circuit-level attenuation and input resistance constants characterize the speed channels on the PTUR board?
The primary frequency measurement circuits present a high input impedance to the field sensor loops to prevent load distortion. Passive magnetic pickup (MPU) channels run an optimized filtering configuration configured to process input signal amplitudes from a minimal threshold up to several tens of volts peak-to-peak without saturating the operational amplifier detection matrix.
