Original Siemens Inverter/Converter Igd Trigger Board A5E00714561 A5EOO714561

Siemens A5E00714561 | SINAMICS Power Block Repair — IGD2/R4 480V/380A Gating Driver Board with IGBT Module

Part Number: A5E00714561

GWE Internal Reference: GWE:A5E00714561

Manufacturer: Siemens AG — Gerätewerk Erlangen (GWE), Germany

Product Type: Power Block Repair Part — IGD2/R4 IGBT Gate Driver Board with IGBT Module

Overview

The A5E00714561 is a SINAMICS Power Block repair assembly — the complete IGD2/R4 gate driver board supplied together with the 380A IGBT module (FS300R12KE3-S1) for servicing SINAMICS S120, G120, and G150 chassis drive power blocks.

This is the assembly that contains both the intelligence and the switching power of the inverter section in a single replaceable unit: the IGD2/R4 gate driver board provides the gate drive pulses, current measurement, and hardware protection, while the FS300R12KE3-S1 IGBT module is the high-power switching device that converts DC bus energy into controlled motor current.

The full assembly designation — IGD2/R4/480V/380A — identifies the drive's voltage class (480V AC input, yielding approximately 650V DC bus), the rated output current (380A), and the gate driver board generation (IGD2 second-generation IGBT gate driver, R4 form factor). At 480V and 380A, this power block serves SINAMICS chassis drive Motor Modules in the 200–250kW class — the power level found in large pump drives, compressor stations, extruder lines, large fans, and heavy-duty industrial process applications.

The unit was originally supplied as a repair part specifically for authorised Siemens service partners — it is listed as a field-service assembly intended for power block replacement in these larger drive units.

The GWE prefix in the part's internal reference confirms its origin from the Gerätewerk Erlangen manufacturing facility.

Key Specifications

IGD2/R4 Gate Driver Board — Function and Architecture

The IGD2 (second-generation IGBT Gate Driver) is the circuit board that sits directly on the IGBT power module and provides the complete interface between the drive's Control Unit and the power transistors.

The IGD2/R4 board performs three distinct functions in the power block:

Gate drive generation. The Control Unit (CU320, CU310, or similar) generates PWM switching commands for the six IGBT positions in the three-phase inverter bridge. The IGD2 board receives these commands and converts them to the voltage and current pulses that actually switch the IGBT gates.

Gate drive requires precise timing, correct gate voltage levels, and controlled rise times — characteristics that are specifically matched to the FS300R12KE3-S1 IGBT module.

Current measurement. The IGD2 board also processes the motor phase current measurement signals from the sensors in the power block.

These analogue measurements are converted to digital data and transmitted to the Control Unit as the current feedback for the drive's vector control algorithm. 

Accuracy here is what determines torque control precision.

Hardware protection. The fastest protection in the drive — IGBT desaturation detection, responding in microseconds — is implemented on the IGD2 board.

When an IGBT turns on and its collector-emitter voltage (VCE) fails to collapse normally, the IGD2 detects this within the turn-on event and immediately removes all gate pulses. 

No software loop can match this response speed, and at 380A, this protection is the primary defence against IGBT destruction in fault conditions.

FS300R12KE3-S1 IGBT Module

The FS300R12KE3-S1 is a full three-phase IGBT bridge module rated at 300A (with 380A peak capability) on a 1200V device voltage rating, suitable for 480V AC drive applications where the DC bus voltage is approximately 650–700V.

The module houses all six IGBTs of the three-phase inverter in a single physical package.

This IGBT module is what the A5E00714561 assembly is built around.

The IGD2/R4 gate driver board is specifically designed for the FS300R12KE3-S1's gate requirements — the gate capacitance, required gate voltage levels, and switching speed characteristics of this specific IGBT determine the gate driver circuit design.

When the A5E00714561 assembly is installed, both the IGBT module and its matched gate driver are replaced together, ensuring that the gate drive circuit is always correctly optimised for the power device it drives.

Service and Safety Requirements

The A5E00714561 was originally designated for installation by Siemens authorised service partners.

This reflects the safety requirements of working at the power block level in a chassis-format SINAMICS drive.

Before any power block service work, the following conditions must be confirmed: AC mains supply isolated and locked out; DC bus confirmed discharged to below 50V (minimum 5-minute wait after isolation, confirmed by measurement); full ESD precautions for handling the IGD2 gate driver board.

When installing the replacement assembly, the IGBT module's thermal interface material must be applied to the heatsink contact surface following Siemens' specified procedure. Incorrect or missing thermal interface compound increases thermal resistance at the IGBT-heatsink junction, resulting in IGBT overtemperature under load even with a physically correct installation.

FAQ

Q1: The SINAMICS drive shows F30022 (IGBT overtemperature) at full load. The drive's heatsink is confirmed cool by touch. Could the A5E00714561 power block assembly be the fault source?

F30022 with a cool heatsink strongly suggests the IGBT temperature sensor on the IGD2 board is reading incorrectly — the sensor itself or its connection to the IGD2 is faulty, producing an artificially high temperature reading.

Alternatively, the thermal interface material between the IGBT module and heatsink may be missing or applied incorrectly, creating a real but localised overtemperature that the heatsink body hasn't reached yet.

Inspect the thermal interface material condition before concluding a sensor fault.

Q2: After replacing the A5E00714561 power block, the drive fault F30001 (overcurrent) triggers immediately at first run with no load. What is the likely cause?

F30001 immediately at first run after power block replacement typically indicates a current measurement offset issue on the new IGD2 board.

The drive's current regulation uses the measured motor current as feedback — a current measurement offset on the new board causes the drive to see apparent current even at standstill. 

Check the drive's current offset parameters and run the current measurement calibration routine if the drive firmware supports it.

 Also confirm the current sensor connector at the new IGD2 board is fully seated.

Q3: The A5E00714561 is listed as discontinued with a successor product. What successor part should be used for new power block replacements?

The successor part for IGD2/R4 480V/380A power block repairs in the SINAMICS family is in the A5E36717xxx series of IGD2 repair parts, which represent the next-generation gate driver board assembly for the same or higher current IGBT modules.

Confirm the exact successor part number against the drive's serial number and the current Siemens spare parts database, as the successor mapping depends on the specific production state of the installed drive.

Q4: Can the A5E00714561 power block assembly be used in any SINAMICS chassis drive at 380A/480V, or is it specific to certain Motor Module variants?

The A5E00714561 is specific to SINAMICS Motor Module variants using the FS300R12KE3-S1 IGBT module in the R4 form factor.

Not all 380A/480V SINAMICS Motor Modules use the same IGBT module type or the same R4 form factor — different production states and power module variants may use different IGBT devices. 

Always cross-reference the installed Motor Module's serial number and production state against the A5E00714561's applicability table before installation.

Q5: The IGBT module in the drive failed as a short circuit. Is the IGD2 gate driver board also likely to be damaged and must it be replaced along with the IGBT?

Yes — when an IGBT fails as a short circuit, the fault current path includes the gate circuit. The gate driver circuits on the IGD2 board absorb the fault transient energy, which can damage gate driver ICs, optocouplers, or gate resistors even if the board appears undamaged.

Installing a new IGBT module on a drive that suffered an IGBT short-circuit without also replacing the IGD2 gate driver board risks immediate re-failure of the new IGBT due to compromised gate drive waveforms.

The A5E00714561 addresses this correctly by supplying both components together as a repair assembly.