MICROMASTER 420/430/440 variable speed drives are Siemens' general-purpose drives for drive technology applications. This product series has a wide power range, a wide output voltage range, a large output current, can realize multiple control methods, integrate rich functions and communication interfaces, and are compact in design and convenient to install.
The MICROMASTER 420/430/440 series are general‑purpose variable frequency drives covering power ranges from 0.12 kW up to 250 kW. They support three‑phase voltages of 380‑480 V and single‑phase voltages of 200‑240 V, with additional 500‑600 V three‑phase options for larger models. The drives feature modular control panels, multiple communication modules (PROFIBUS, DeviceNet, CANopen), and built‑in PID control with programmable V/f characteristics.
The manuals include detailed wiring diagrams, selection and ordering data, and a list of optional modules such as encoder interfaces and braking resistors. Protection functions cover overload (150 % rated current for 60 s), over‑temperature (‑10 °C to +50 °C), motor over‑heat (PTC), and ground‑fault detection. Input/output options comprise up to 6 digital inputs, 2 analog inputs, and 3 relay outputs, enabling flexible integration into automation systems. This manual is written in Chinese.
| Power range (MICROMASTER 420) | 0.12 kW to 11 kW |
|---|---|
| Power range (MICROMASTER 430) | 7.5 kW to 250 kW |
| Power range (MICROMASTER 440) | 0.12 kW to 250 kW |
| Three‑phase voltage | 380 V to 480 V AC |
| Single‑phase voltage | 200 V to 240 V AC |
| High‑voltage three‑phase option | 500 V to 600 V AC |
| Digital inputs | 6 |
| Analog inputs | 2 |
| Relay outputs | 3 |
| Operating temperature | -10 °C to +50 °C |
| Overload capacity | 150 % of rated current for 60 s |
The MICROMASTER 420 covers a power range from 0.12 kW up to 11 kW.
Three‑phase models accept 380 V‑480 V AC, single‑phase models accept 200 V‑240 V AC, and a high‑voltage option of 500 V‑600 V AC is offered for larger drives.
The drive provides six digital inputs.
The device operates from –10 °C to +50 °C.