SIEMENS Inverter MICROMASTER 440 Drive Technologies

Inverter MICROMASTER 440

The MICROMASTER 440 inverter is suitable for a variety of variable-speed drive applications. Its flexibility provides for a wide spectrum of applications. These also include cranes and hoisting gear, high-bay warehouses, production machines for food, beverages and tobacco, packaging machines etc.; i.e. applications which require the frequency inverter to have a higher functionality and dynamic response than usual.

The inverter is especially characterized by its customer-oriented performance and ease-of-use. Its large mains voltage range enables it to be used all over the world.

Main characteristics
  • Easy, guided start-up
  • Modular construction allows maximum configuration flexibility
  • Six programmable isolated digital inputs
  • Two scaleable analog inputs (0 V to 10 V, 0 mA to 20 mA) can also be used as a 7th/8th digital input
  • Two programmable analog outputs (0 mA to 20 mA)
  • Three programmable relay outputs (30 V DC/5 A, resistive load; 250 V AC/2 A, inductive load)
  • Low-noise motor operation thanks to high pulse frequencies, adjustable (observe derating if necessary)
  • Protection for motor and inverter

The MICROMASTER 440 inverter is suitable for a variety of variable-speed drive applications.
Its flexibility provides for a wide spectrum of applications. These also include cranes and hoisting gear, high-bay warehouses, production machines for food, beverages and tobacco, packaging machines etc.; i.e. applications which require the frequency inverter to have a higher functionality and dynamic response than usual.

Technical data

MICROMASTER 440

Mains voltage and power ranges

CT (constant torque)

VT (variable torque)

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 45 kW

5.5 kW to 55 kW

380 V to 480 V 3 AC  ±10 %

0.37 kW to 200 kW

7.5 kW to 250 kW

500 V to 600 V 3 AC  ±10 %

0.75 kW to 75 kW

1.5 kW to 90 kW

Input frequency

47 Hz to 63 Hz

Output frequency

in V/f mode

for inverter 0.12 kW to 75 kW

0 … 650 Hz, (limitation to 550 Hz in production to comply with legal requirements) 1)

for inverter 90 kW to 200 kW

0 Hz to 267 Hz

in vector mode

for inverter 0.12 kW to 75 kW

0 Hz to 200 Hz

for inverter 90 kW to 200 kW

0 Hz to 200 Hz

Power factor

≥ 0.95

Inverter efficiency

0.12 kW to 75 kW: 96 % to 97 %; 90 kW to 200 kW: 97 % to 98 %
(Further information is available on the Internet at:
Overload capability

CT mode

for inverter 0.12 kW to 75 kW

Overload current 1.5 x rated output current (i.e. 150 % overload capability) for 60 s, cycle time 300 s, and 2 x rated output current (i.e. 200 % overload capability) for 3 s, cycle time 300 s

for inverter 90 kW to 200 kW

Overload current 1.36 x rated output current (i.e. 136 % overload capability) for 57 s, cycle time 300 s, and 1.6 x rated output current (i.e. 160 % overload capability) for 3 s, cycle time 300 s

Overload capability

VT mode

for inverter 5.5 kW to 90 kW

Overload current 1.4 x rated output current (i.e. 140 % overload capability) for 3 s, and 1.1 x rated output current (i.e. 110 % overload capability) for 60 s, cycle time 300 s

for inverter 110 kW to 250 kW

Overload current 1.5 x rated output current (i.e. 150 % overload capability) for 1 s, and 1.1 x rated output current (i.e. 110 % overload capability) for 59 s, cycle time 300 s

Inrush current

not higher than rated input current

Control method

Vector control, torque control, linear V/f characteristic; quadratic V/f characteristic; multipoint characteristic (programmable V/f characteristic); flux current control (FCC)

Pulse frequency

for inverter 0.12 kW to 75 kW

4 kHz (standard); 16 kHz (standard with 230 V inverters 0.12 kW to 5.5 kW)
2 kHz to 16 kHz (in 2 kHz steps)

for inverter 90 kW to 200 kW

2 kHz (standard with VT mode); 4 kHz (standard with CT mode)
2 kHz to 4 kHz (in 2 kHz steps)

Fixed frequencies

15, programmable

Skip frequency ranges

4, programmable

Setpoint resolution

0.01 Hz digital
0.01 Hz serial
10 bit analog

Digital inputs

6 fully programmable isolated digital inputs; switchable PNP/NPN

Analog inputs

2 programmable analog inputs

  • 0 V to 10 V, 0 mA to 20 mA and -10 V to +10 V (AIN1)
  • 0 V to 10 V and 0 mA to 20 mA (AIN2)
  • both can be used as 7th/8th digital input

Relay outputs

3, programmable
30 V DC/5 A (resistive load)
250 V AC/2A (inductive load)

Analog outputs

2, programmable (0/4 mA to 20 mA)

Serial interfaces

RS-485, optional RS-232

Motor cable lengths

Without output choke

for inverter 0.12 kW to 75 kW

max. 50 m (shielded)
max. 100 m (unshielded)

for inverter 90 kW to 250 kW

max. 200 m (shielded)
max. 300 m (unshielded)

With output choke

see variant dependent options

Electromagnetic compatibility (see Selection and Ordering Data)

EMC filter, Class A or Class B to EN 55 011 available as an option
Inverter with internal filter Class A available

Braking

Resistance braking with DC braking, compound braking, integrated brake chopper (integrated brake chopper only with 0.12 kW to 75 kW inverters)

Degree of protection

IP20

Operating temperature (without derating)

for inverter 0.12 kW to 75 kW

CT: -10 °C to +50 °C (+14 °F to +122 °F)
VT: -10 °C to +40 °C (+14 °F to +104 °F)

for inverter 90 kW to 200 kW

0 °C to +40 °C (+32 °F to +104 °F)

Storage temperature

-40 °C to +70 °C (-40 °F to +158 °F)

Relative humidity

95 % (non-condensing)

Installation altitude

for inverter 0.12 kW to 75 kW

up to 1000 m above sea level without derating

for inverter 90 kW to 200 kW

up to 2000 m above sea level without derating

Standard SCCR
(Short Circuit Current Rating) 2)

FSA, FSB, FSC: 100 kA
FSD, FSE, FSF, FSFX, FSGX: 65 kA

Protection features for

Undervoltage, overvoltage, overload, earth faults, short-circuits, stall prevention, locked motor protection, motor overtemperature, inverter overtemperature, parameter change protection

Compliance with standards

uL, c uL, CE, c-tick

CE marking

Conformity with low-voltage directive 73/23/EEC

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Product manuals

#FileDescriptionDate addedFile sizeDownloads
1 pdf siemens micromaster 440 series compact manual - 06060209/27/2017 16:2313 MB124