A5E00430140 Siemens MICROMASTER 430 Field Trigger Board 24VDC 30A Excitation Power Drive Board

A5E00430140 Siemens MICROMASTER 430 Field Trigger Board 24VDC 30A Excitation Power Drive Board

1.Overview of the A5E00430140 Siemens

The A5E00430140 is a field trigger board (FTB), commonly known as the "field trigger board," custom-designed by Siemens for the SIMOREG DC Master (6RA70) DC drive cabinet. Plugged directly below the CUD1 control board, it amplifies the 0-10 V trigger pulses from the CUD into the strong pulse current required by the thyristors (SCRs), enabling precise closed-loop regulation of the DC motor's excitation current. If this board fails, the entire system will report F005 (excitation circuit fault) or F036 (no excitation current), and is therefore considered the "ignition coil" of the DC drive system.

Key Features
Core Control Function: Serving as the brains of the inverter, this driver board receives external control commands and feedback signals, precisely driving the IGBT power modules to achieve smooth motor speed regulation, start/stop control, and torque management.

Stable and Reliable Drive Performance: Designed to operate continuously and stably in harsh industrial environments, it ensures smooth operation of the connected motor and reduces shock to the equipment caused by speed fluctuations or load changes.

Comprehensive Protection Mechanisms: The boards typically integrate multiple protection functions, including overcurrent, overvoltage, undervoltage, and overtemperature. These boards monitor system status in real time and quickly initiate protective measures when anomalies are detected, preventing equipment damage.

Compatibility and Integrability: As part of the Siemens MICROMASTER 430 series, this driver board offers excellent compatibility with other components in the same series of inverters (such as power boards and control panels), facilitating integration into automation systems.

2.Core Features:

Order Number: A5E00430140
Internal Model: 1790L811A (PCB Silkscreen)
Applicable Series: MM430 / MM440, Power Ranges: 18.5 kW / 22 kW / 30 kW / 37 kW / 45 kW
Board Type: Driver Board (IGBT Gate Driver + Switching Power Supply + Signal Acquisition)
Input Voltage: Three-Phase 380–480 V AC ±10%, 50/60 Hz
Switching Power Supply Output: +24 V / 2 A (Fan and Control Logic)
+5 V / 1 A (DSP and Interface)
±15 V / 0.2 A (Analog Sampling and Op Amp)
IGBT Driver: 6 Independent Isolated Power Supplies, ±15 V Pulse, 4 A Peak
Protection Functions: Undervoltage Lockout, Overcurrent Short Circuit (DESAT), Thermal Shutdown, IGBT Fault Feedback
Interface Signals DC bus voltage sampling, output current sampling (3 resistors), heat sink temperature NTC
Isolation voltage: 2500 V AC (drive-control-bus three-terminal isolation)
Operating temperature: –10…+70°C (40°C without derating)
Dimensions: 150 × 100 × 35 mm
Connection: 34-pin European socket, stacked parallel to the motherboard
Indicators: Green LED: Power normal; Red LED: IGBT fault
Certifications: CE, UL, RoHS

Feature Highlights
Six-channel isolated drive: Directly drives 1200 V / 150 A IGBT modules without the need for an external driver card.
Built-in switching power supply: Draws power from the DC bus, eliminating the need for an external 24 V transformer and reducing the number of fault points.
DESAT protection: Real-time monitoring of IGBT voltage drop, shuts down and reports faults within 2 μs.
Hot-swap detection: Onboard NTC interfaces with the fan to immediately block pulses if the fan stops.
Wide power compatibility: The same model covers 18.5–45 kW, and upgrades are possible by simply replacing the power module.

3.Product details pictures

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