The Siemens family of MICROMASTER low-voltage frequency inverters address drive applications in the power range extending from 0.12 kW up to 250 kW. They are designed for simple applications with voltage-frequency control (V/f control) to complex applications with closed-loop vector control and encoder feedback. Contact IBT for more information.
Meet the family:
- MICROMASTER 420 – the universal inverter with improved drive performance features.
- MICROMASTER 430– economically efficient in both investment and operation.
- MICROMASTER 440– everything needed to keep machine wear to a minimum.
MICROMASTER 420: The Universal Inverter for Every Challenge
Here is a frequency inverter which can be easily adapted to your individual requirements. The Siemens MICROMASTER 420 is the universal inverter for 3-phase networks and optional field-bus connection.
With its modular design, the extensive standard functions can be supplemented with a wide variety of options. You do not even need tools, as the operator panels and the communications modules can be simply plugged in. Screwless control terminals – as with the rest of the family – make connecting terminals a cinch.
| Voltage & Power Ranges |
200-240 V, ± 10%, 1 AC, 0.12 to 3 kW (0.16 to 4 HP) 200-240 V, ± 10%, 3 AC, 0.12 to 5.5 kW (0.16 to 7.5 HP) 380-480 V, ± 10%, 3 AC, 0.37 to 11 kW (0.5 to 15 HP) |
| Operating Temp | -10 °C to +50 °C |
| Process Control | Internal PI controller |
| Types of Control | FCC (Flux Current Control), multipoint characteristic (parameterizable V/f characteristic), V/f characteristic |
| Inputs | 3 digital inputs, 1 analog input |
| Outputs | 1 analog output, 1 relay output |
| Link-up to Automation |
The ideal partner for your automation needs, from connection to SIMATIC S7-200 to integration in TIA with SIMATIC and SIMOTION. |
| Uses | Conveyor systems, material transport, pumps, fans, mechanical engineering |
Strengths
- Compact housing
- Easy to install
- Highly versatile inputs and outputs
- FCC control (Flux Current Control) for high drive quality, even when load changes occur
- Different methods of commissioning, via operator panel or cost-free software tool
- Modular system of inverter options
- Parameterizable acceleration/ deceleration times (0 to 650 s)
- Compound braking for controlled rapid braking
- 4 skip frequencies for minimizing stress on the machine when resonance occurs
- Automatic restart
- Minimal stress on motor when inverter connected to rotating motor
- Prepared for use in IT networks
- Integrated protection/overload functions
- Available with or without integrated EMC filter
MICROMASTER 430: The Specialist for Pumps and Fans
Every task performed by a drive system involves its own specific requirements. There is therefore a demand for inverter solutions that can be easily and flexibly adapted to cope with the broadest variety of challenges. It is exactly this flexibility which characterizes our modular MICROMASTER 430.
Designed specially for use with pumps and fans in industry, it performs a wide variety of tasks in similar applications as well. Compared to the MICROMASTER 420, it features greater power efficiency and has more inputs and outputs as well as an optimized operator panel with switch-over between manual and automatic modes of operation.
| Voltage & Power Ranges |
380-480 V, ± 10%, 3 AC, 7.5 to 250 kW (10 to 300 HP) |
| Operating Temp | -10 °C to +40 °C |
| Process Control | Internal PI controller |
| Types of Control | FCC (Flux Current Control), multipoint characteristic (parameterizable V/f characteristic), V/f characteristic |
| Inputs | 6 digital inputs, 2 analog inputs, 1 PTC/KTY input |
| Outputs | 2 analog outputs, 3 relay outputs |
| Link-up to Automation |
The ideal partner for your automation needs, from connection to SIMATIC S7-200 to integration in TIA with SIMATIC and SIMOTION. |
| Uses | Pumps and fans |
Strengths
- Compact housing
- Easy to install
- Guided commissioning
- Numerous communications options
- Ability to cope with high starting torques
- FCC control (Flux Current Control) for high drive quality, even when load changes occur
- Integrated activation of up to three additional drives (motor staging) for low-cost power multiplication for pump and fan drives
- Bypass support for rapid motor changeover to direct mains operation for maximum process safety
- Dry-running detection for pump drives
- Compound braking for controlled rapid braking
- 4 skip frequencies for minimizing stress on the machine when resonance occurs
- Automatic restart
- Minimal stress on motor when inverter connected to rotating motor
- Prepared for use in IT networks
- Integrated protection/overload functions
- Available with or without integrated EMC filter
- Energy-saving function with motor shut-off for maximum energy saving without altering the availability of full drive output
MICROMASTER 440:The Powerful All-Rounder
The MICROMASTER 440 has been specially designed for applications needing broader functionality and a greater dynamic response than usual. Its sophisticated vector control system ensures a uniformly high drive quality, even when sudden load changes occur.
Fast response inputs and positioning deceleration ramps allow movement to target positions even without an encoder. Due to an integrated brake chopper, it works with outstanding precision, even during braking and short declaration ramps.
| Voltage & Power Ranges |
200-240 V, ± 10%, 1 AC, 0.12 to 3 kW (0.16 to 4 HP) 200-240 V, ± 10%, 0.12 to 45 kW (0.16 to 60 HP) 380-480 V, ± 10%, 0.37 to 250 kW (0.5 to 350 HP) 500-600 V, ± 10%, 0.75 to 90 kW (1.0 to 125 HP) |
| Operating Temp | 0.12 to 75 kW (0.16 to 1.0 HP) (CT): -10 °C to +50 °C 90 to 200 kW (125 to 276 HP) (CT): 0 °C to +40 °C |
| Process Control | Internal PI controller (autotuning) |
| Types of Control | Vector control, FCC (Flux Current Control), multipoint characteristic (parameterizable V/f characteristic), V/f characteristic |
| Inputs | 6 digital inputs, 2 analog inputs, 1 PTC/KTY input |
| Outputs | 2 analog outputs, 3 relay outputs |
| Link-up to Automation |
The ideal partner for your automation needs, from connection to SIMATIC S7-200 to integration in TIA with SIMATIC and SIMOTION. |
| Uses | Material handling systems, the textile industry, elevators, hoisting gear, mechanical engineering and food, beverages and tobacco industries |
Strengths
- Compact housing
- Easy to install
- Sophisticated vector control (speed/torque)
- Versatile inputs and outputs
- Guided commissioning
- Evaluation of motor pulse encoders (optional) for maximum control of torque at the lowest speeds (even at zero speed)
- Modular system of extension options
- Can be dimensioned for CT (constant torque) or VT (quadratic, i. e. variable torque)
- 3 selectable drive data to adapt the inverter to different operating circumstances
- Load torque monitoring
- Kinetic buffering against voltage dips
- Compound braking for controlled rapid braking
- Integrated brake chopper for power outputs up to 90 kW (125 HP)
- Free function blocks
- 4 skip frequencies minimize machine stress when resonance occurs
- Automatic restart
- Minimal stress on motor when inverter connected to rotating motor
- Evaluation of motor temperature for integrated motor protection
- Prepared for use in IT networks
- Available with and without integrated EMC filter
