IS200WPDFH1ACC - Relay Daughter Board

SPECIFICATIONS:

Part Number: IS200WPDFH1ACC
Manufacturer: General Electric (GE)
Series: Mark VI
Product Type: Relay Daughter Board
Number of Channels: 12
Technology: Surface Mount
Dimensions: 10.16 cm (W) x 3.02 cm (H)
Number of Fused Branches: 12
Fuse Rating: 3.15 A at 25�C
Operating Temperature: -30�C to 65�C
Manual Reference: GEH-6421H
Repair Turnaround Time: 3�7 Business Days
Availability: In Stock
Country of Origin: United States

FUNCTIONAL DESCRIPTION:

IS200WPDFH1ACC is a Relay Daughter Board manufactured and designed by General Electric as part of the Mark VI Series used in GE Speedtronic Gas Turbine Control Systems. WPDFH1A is a daughterboard to TRLYH#F to supply power to the customer�s solenoids. WPDF holds two power distribution circuits, which can be independently used for standard 125 V dc, 115 V ac, or 24 V dc sources. Each section consists of 6 fused branches that power the TRLYH#F terminal board. Each branch has its voltage monitor across its secondary fuse pair. Each of these voltage detectors is fanned out to three independent open-collector drivers for feedback to each of the I/O processors, R, S, and T. The WPDF should not be used without TRLYH#F. Fused power flows through this board down to the TRLY terminal board points. The TRLY controls fuse power feedback.

INSTALLATION:

The customer's 12 solenoids are connected to two I/O terminal blocks mounted on the terminal board. Each block, secured with two screws, has 24 terminals that support up to #12 AWG wires. A shield termination strip, linked to the chassis ground, is positioned to the left of each block. Solenoid power for outputs 1-12 is available with the WPDF daughterboard or can be supplied through the terminal block. 28 V dc power for the terminal board relay coils and logic comes from the three I/O processors connected at JR1, JS1, and JT1.
POWER DISTRIBUTION BOARD:

The optional WPDF power distribution board mounts on top of TRLY, making connections at J1 and J2. The board is held in place with one screw located at the center of the WPDF board. Power for the two sections of the board is wired in through three-pin connectors J1 and J4, and this can be daisy-chained out through adjacent plugs J2 and J3.

OPERATION:

The same relays are used for the ac and dc voltage levels given in the Specification section. Also, the same relays are used on the H1F and H2F boards, but the circuit is different. Relay drivers are mounted on the relay terminal board and drive the relays at the frame rate. The relay outputs have failsafe features so that when a cable is unplugged, or communication with the associated I/O board or I/O pack is lost, the inputs vote to de-energize the corresponding relays. This board only supports TMR applications. The relay control signals are routed into TRLY from the three I/O processors R, S, and T through plugs JR1, JS1, and JT1. These signals directly control the corresponding relay driver for each TMR section R, S, and T. Power for each section�s relay coils comes in from its own I/O processor and is not shared with the other sections.

FIELD SOLENOID POWER OPTION:

WPDFH1A is a daughterboard to TRLYH#F to supply power to the customer�s solenoids. WPDF holds two power distribution circuits, which can be independently used for standard 125 V dc, 115 V ac, or 24 V dc sources. Each section consists of six fused branches that provide power to the TRLYH#F terminal board. Each branch has its own voltage monitor across its fuse pair secondary. Each of these voltage detectors is fanned out to three independent open-collector drivers for feedback to each of the I/O processors R, S, T. The WPDF should not be used without TRLYH#F. Fused power flows through this board down to the TRLY terminal board points. Fuse power feedback is controlled by the TRLY.

We maintain the largest inventory of OEM replacement parts for GE Speedtronic Gas Turbine Control Systems, ensuring you have access to the components you need, when you need them. In addition to supplying new and unused parts, we specialize in repairing faulty boards and providing rebuilt components, all backed by our comprehensive warranty for your peace of mind. Our team of highly trained automation experts is available 24/7, ready to provide technical support, troubleshooting, and guidance for all your GE Speedtronic systems. Whether you require parts procurement, on-site support, or system optimization, we are committed to delivering fast, reliable, and cost-effective solutions tailored to your operational needs. For detailed pricing, availability, or repair inquiries, our dedicated support team is just a phone call or email away, ready to assist with any questions or technical requirements you may have. Partner with us and experience unmatched service and expertise in gas turbine control system support.

FREQUENTLY ASKED QUESTIONS:

What is IS200WPDFH1ACC?

The IS200WPDFH1ACC is a Relay Daughter Board manufactured by General Electric as part of the Mark VI series for GE Speedtronic Gas Turbine Control Systems. It acts as an interface between I/O processors and external solenoids, converting low-power control signals into high-power relay outputs. The board also monitors voltage across each fused branch and provides feedback to ensure safe and reliable operation.

What is the function of the IS200WPDFH1ACC?

The board distributes power to solenoids and actuators while providing precise relay control for turbine systems. It ensures that each relay operates safely with real-time voltage monitoring and feedback to the I/O processors. By doing so, it maintains system reliability and protects connected devices from overloads.

How does the board provide redundancy in TMR systems?

Each relay section (R, S, T) operates independently, powered by its respective I/O processor. This forms a Triple Modular Redundancy (TMR) configuration, so failure in one section does not affect the others. Continuous feedback to the processors enables immediate detection and response to faults, ensuring failsafe operation.