The MICROMASTER 420 has a modular design. The operator panels and communication modules can be easily exchanged without requiring any tools.
- Easy, guided start-up
- Modular construction allows maximum configuration flexibility
- Three fully programmable isolated digital inputs
- One scalable analog input (0 V to 10 V) can also be used as a 4th digital input
- One programmable analog output (0 mA to 20 mA)
- One programmable relay output
30 V DC/5 A, resistive load
250 V AC/2 A, inductive load - Low-noise motor operation through high pulse frequency, adjustable (observe derating if necessary)
- Complete inverter and motor protection
Options (overview)
- EMC filter, Class A/B
- LC filter
- Line commutating chokes
- Output chokes
- Gland plates
- Basic Operator Panel (BOP) for parameterizing the inverter
- Advanced Operator Panel (AOP) with multi-language plain text display
- Asian Advanced Operator Panel (AAOP) with Chinese and English plain text display
- Cyrillic Advanced Operator Panel (CAOP) with Cyrillic, German and English plain text display
SIEMENS MICROMASTER 420 DRIVE
Technical specifications
TECHNICAL DATA | MICROMASTER 420 | |||
|---|---|---|---|---|
Mains voltage and power ranges | 200 V to 240 V 1 AC ±10 % | 0.12 kW to 3 kW | ||
200 V to 240 V 3 AC ±10 % | 0.12 kW to 5.5 kW | |||
380 V to 480 V 3 AC ±10 % | 0.37 kW to 11 kW | |||
Power frequency | 47 Hz to 63 Hz | |||
Output frequency | 0 … 650 Hz, (limitation to 550 Hz in production to comply with legal requirements) 1) | |||
Power factor | ≥ 0.95 | |||
Inverter efficiency | 96 % to 97 % (Further information is available on the Internet at: | |||
Overload capability | Overload current 1.5 x rated output current (i.e. 150 % overload capability) for 60 s, cycle time 300 s | |||
Inrush current | Less than rated input current | |||
Control method | Linear V/f characteristic; quadratic V/f characteristic; multipoint characteristic (programmable V/fcharacteristic); flux current control (FCC) | |||
Pulse frequency | 16 kHz (standard with 230 V 1/3 AC) | |||
Fixed frequencies | 7, programmable | |||
Skip frequency ranges | 4, programmable | |||
Setpoint resolution | 0.01 Hz digital | |||
Digital inputs | 3 fully programmable isolated digital inputs; switchable PNP/NPN | |||
Analog input | 1, for setpoint or PI controller (0 V to 10 V, scaleable or for use as 4th digital input) | |||
Relay outputs | 1, programmable, 30 V DC/5 A (resistive load); 250 V AC/2 A (inductive load) | |||
Analog output | 1, programmable (0 mA to 20 mA) | |||
Serial interfaces | RS-485, optional RS-232 | |||
Motor cable lengths | ||||
| max. 50 m (shielded) | |||
| see variant dependent options | |||
Electromagnetic compatibility | Inverter available with internal EMC filter Class A; available as options are EMC filters to EN 55 011, Class A or Class B | |||
Braking | DC braking, compound braking | |||
Degree of protection | IP20 | |||
Operating temperature | –10 °C to +50 °C (+14 °F to +122 °F) | |||
Storage temperature | –40 °C to +70 °C (–40 °F to +158 °F) | |||
Relative humidity | 95 % (non-condensing) | |||
Installation altitude | Up to 1000 m above sea level without derating | |||
Standard SCCR | 100 kA | |||
Protection features for | • Undervoltage | |||
• Overvoltage | ||||
• Overload | ||||
• Earth faults | ||||
• Short circuit | ||||
• Stall prevention | ||||
• Locked motor protection | ||||
• Motor overtemperature | ||||
• Inverter overtemperature | ||||
• Parameter interlock | ||||
Compliance with standards | UL, cUL, CE, c-tick | |||
CE marking | Conformity with low-voltage directive 73/23/EEC | |||
Cooling-air volumetric flow required, dimensions and weights | Frame size (FS) | Cooling-air volumetric flow required (l/s)/(CFM) | H x W x D (mm) | Weight, approx. (kg) |
A | 4.8/10.2 | 173 x 73 x 149 | 1.0 | |
B | 24/51 | 202 x 149 x 172 | 3.3 | |
C | 54.9/116.3 | 245 x 185 x 195 | 5.0 | |
CFM: | ||||
