TOSHIBA ARND-3119 A6 2N3A3119-B Driving Main Control Board

I. Model Description
ARND-3119: Board Series Model
A6: Hardware Version Number
2N3A3119-B: Original Factory Material Order Code (Unique Number for Purchase and Spare Parts Replacement)

Core Functions
Switching Power Supply Power Supply: Provides multiple isolated DC power supplies for the internal main control, IGBT drive circuit, and detection circuit of the inverter, with a built-in small industrial frequency isolation transformer
IGBT Gate Drive: Outputs multiple PWM drive signals to drive the power module IGBT, achieving large power AC-DC-AC inverter speed regulation
Current / Voltage Sampling and Detection: Collects DC bus voltage and output three-phase current, with overcurrent, overvoltage, overload, and phase loss fault protection
Digital IO Interlock Circuit: Integrates multiple optocoupler isolated input and output, achieving external interlock control such as emergency stop, fan, contactor, and fault alarm
System Communication: Equipped with Modbus RTU bus, capable of networking with upper-level PLC and touch screen to monitor operating parameters and fault codes

Key Electrical Parameters
Power Supply Input: Industrial AC mains input, with onboard built-in power circuit
Rated Load Current: Maximum 2A
Operating Environment: -20℃ ~ +60℃, industrial wide temperature design
Communication Protocol: RS485 Modbus RTU
Protection: Onboard isolated optocoupler, varistor, fuse, resistant to grid surge interference
Weight: Approximately 0.9kg

Typical Application Scenarios
Mainly TMEIC (Toshiba) medium and high voltage / high power inverters， widely used in：
Steel rolling line main drive， roller track inverter drive
Large power wind turbines， water pumps， compressors， and other inverter speed regulation systems in large power plants， metallurgy， mining
Port crane， large industrial assembly line high-power drive devices