IC3600EPSC1B - Speedtronic Inverter Drive Circuit Card

IC3600EPSC1B - Speedtronic Inverter Drive Circuit Card IC3600EPSC1B - Speedtronic Inverter Drive Circuit Card

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Part Number: IC3600EPSC1B
Manufacturer: General Electric
Series: Mark I & II
Product Type: Speedtronic Inverter Drive Circuit Card
Number of relay channels: 12
Power supply voltage: 28 V dc
Operating temperature: 0 to +60°C
Size: 15.9 cm high x 17.8 cm
Response speed: 0.2-5s
Weight: 4.0 lbs
Repair: 3-7 Day
Availability: In Stock
Country of Origin: United States


IC3600EPSC1B is a Speedtronic Inverter Drive Circuit Card manufactured and designed by General Electric as part of the Mark I & II Series used in GE Speedtronic Turbine Control Systems. The Speedtronic inverter drive circuit card is an integral component of the Speedtronic series control systems, which are commonly used in industrial applications to control and monitor gas and steam turbines. These circuit cards are crucial for converting DC power to AC power, which is essential for driving motors and other equipment in a controlled manner.


  • Power Supply Module: This module provides the necessary operating voltages for the entire circuit card and ensures stable and reliable power delivery.
  • Microcontroller or DSP (Digital Signal Processor): Acts as the brain of the inverter drive. It controls the operation of the inverter by generating the necessary PWM (Pulse Width Modulation) signals to produce the desired AC output.
  • IGBTs (Insulated Gate Bipolar Transistors): These are the switching devices used in the inverter to handle high power levels. They switch the DC voltage on and off at high frequencies, creating an AC waveform.
  • Drivers and Isolation Circuits: These circuits are used to drive the IGBTs and provide electrical isolation between the high-power and control sections of the circuit card to protect the low-voltage components.
  • Feedback and Sensing Circuits: These circuits monitor the output current, voltage, and other parameters, providing feedback to the control system to adjust the inverter's operation for optimal performance and protection.
  • Protection Circuits: Ensure the safety of the system by protecting against overcurrent, overvoltage, and thermal overload conditions.
  • Communication Interfaces: Allow the circuit card to communicate with other parts of the Speedtronic control system or with external monitoring and control systems. Common interfaces include CAN bus, RS-485, and Ethernet.


  • Input Processing: The AC power input is first rectified to a DC voltage by the rectifier circuit.
  • DC-Link: The rectified DC voltage is filtered and stabilized in the DC-link stage, typically using capacitors.
  • Inversion: The stabilized DC voltage is then inverted back to AC by the inverter stage using IGBTs. The microcontroller or DSP generates precise PWM signals to control the switching of the IGBTs, shaping the output AC waveform.
  • Output Filtering: The AC output is filtered to smooth the waveform and remove any high-frequency components caused by the PWM switching.
  • Feedback and Adjustment: Continuous feedback from the sensing circuits is used to adjust the PWM signals, ensuring that the output AC voltage and frequency remain within desired parameters.

WOC has the largest stock of GE Speedtronic turbine control systems replacement parts. We can also repair your faulty boards and supply unused and rebuilt boards backed up with a warranty. Our team of experts is available round the clock to support your OEM needs. Our team of experts at WOC is happy to assist you with any of your automation requirements. For pricing and availability on parts and repairs, kindly contact our team by phone or email.


How does a Speedtronic inverter drive circuit card work?

The circuit card first rectifies AC power to DC, then stabilizes it in the DC-link stage. The inverter stage converts this DC power back to AC using IGBTs controlled by PWM signals from a microcontroller or DSP. Feedback and sensing circuits monitor output parameters, allowing real-time adjustments to maintain optimal performance.

How does the communication interface of the Speedtronic inverter drive circuit card work?

The communication interfaces, such as CAN bus, RS-485, and Ethernet, allow the circuit card to connect with other parts of the Speedtronic control system or external monitoring and control systems, facilitating seamless data exchange and coordination.

How are boards packaged for shipment from WOC?

Parts are placed in antistatic packets and securely packed in ESD boxes cushioned with ESD Foam designed to safeguard electrical components.