MICROMASTER 420 Types Variable Frequency Drive Inverter Pumps Inverter
Application
It is the ideal cost-optimized frequency inverter solution. The inverter is especially characterized by its customer-oriented performance and ease-of-use. Its large supply-voltage range enables it to be used all over the world.
The MICROMASTER 420 has a modular design. The operator panels and communication modules can be easily exchanged without requiring any tools.
|  			 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/f characteristic); flux current control (FCC) | |||
|  			 Pulse frequency 
  |  			16 kHz (standard with 230 V 1/3 AC) 4 kHz (standard with 400 V 3 AC) 2 kHz to 16 kHz (in 2 kHz steps)  |  		|||
| Fixed frequencies | 7, programmable | |||
| Skip frequency ranges | 4, programmable | |||
|  			 Setpoint resolution 
 
  |  			0.01 Hz digital 0.01 Hz serial 10 bit analog  |  		|||
| 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) max. 100 m (unshielded)  |  		|||
 			
  |  			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 (Short Circuit Current Rating) 2)  |  			100 kA | |||
