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.
The MICROMASTER 440 has a modular design. The operator panels and the modules can be easiliy exchanged.
Technical data |
MICROMASTER 440 |
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Mains voltage and power ranges |
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CT (constant torque) |
VT (variable torque) |
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200 V to 240 V 1 AC ±10 % |
0.12 kW to 3 kW |
- |
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200 V to 240 V 3 AC ±10 % |
0.12 kW to 45 kW |
5.5 kW to 55 kW |
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380 V to 480 V 3 AC ±10 % |
0.37 kW to 200 kW |
7.5 kW to 250 kW |
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500 V to 600 V 3 AC ±10 % |
0.75 kW to 75 kW |
1.5 kW to 90 kW |
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Input frequency |
47 Hz to 63 Hz |
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Output frequency |
in V/f mode
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for inverter 0.12 kW to 75 kW |
0 ... 650 Hz, (limitation to 550 Hz in production to comply with legal requirements) 1) |
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for inverter 90 kW to 200 kW |
0 Hz to 267 Hz |
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in vector mode
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for inverter 0.12 kW to 75 kW |
0 Hz to 200 Hz |
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for inverter 90 kW to 200 kW |
0 Hz to 200 Hz |
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Power factor |
≥ 0.95 |
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Inverter efficiency |
0.12 kW to 75 kW: 96 % to 97 %; 90 kW to 200 kW: 97 % to 98 % |
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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 |
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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 |
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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 |
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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 |
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Inrush current |
not higher than rated input current |
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Control method |
Vector control, torque control, linear V/f characteristic; quadratic V/f characteristic; multipoint characteristic (programmable V/f characteristic); flux current control (FCC) |
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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) |
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for inverter 90 kW to 200 kW |
2 kHz (standard with VT mode); 4 kHz (standard with CT mode) |
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Fixed frequencies |
15, programmable |
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Skip frequency ranges |
4, programmable |
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Setpoint resolution |
0.01 Hz digital |
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Digital inputs |
6 fully programmable isolated digital inputs; switchable PNP/NPN |
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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 |
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Relay outputs |
3, programmable |
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Analog outputs |
2, programmable (0/4 mA to 20 mA) |
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Serial interfaces |
RS-485, optional RS-232 |
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Motor cable lengths |
Without output choke |
for inverter 0.12 kW to 75 kW |
max. 50 m (shielded) |
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for inverter 90 kW to 250 kW |
max. 200 m (shielded) |
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With output choke |
see variant dependent options |
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Electromagnetic compatibility (see Selection and Ordering Data) |
EMC filter, Class A or Class B to EN 55 011 available as an option |
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Braking |
Resistance braking with DC braking, compound braking, integrated brake chopper (integrated brake chopper only with 0.12 kW to 75 kW inverters) |
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Degree of protection |
IP20 |
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Operating temperature (without derating) |
for inverter 0.12 kW to 75 kW |
CT: -10 °C to +50 °C (+14 °F to +122 °F) |
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for inverter 90 kW to 200 kW |
0 °C to +40 °C (+32 °F to +104 °F) |
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Storage temperature |
-40 °C to +70 °C (-40 °F to +158 °F) |
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Relative humidity |
95 % (non-condensing) |
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Installation altitude |
for inverter 0.12 kW to 75 kW |
up to 1000 m above sea level without derating |
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for inverter 90 kW to 200 kW |
up to 2000 m above sea level without derating |
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Standard SCCR |
FSA, FSB, FSC: 100 kA |
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Protection features for |
Undervoltage, overvoltage, overload, earth faults, short-circuits, stall prevention, locked motor protection, motor overtemperature, inverter overtemperature, parameter change protection |
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Compliance with standards |
uL, c uL, CE, c-tick |
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CE marking |
Conformity with low-voltage directive 73/23/EEC |
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Cooling-air volumetric flow required, dimensions and weights (without options) |
Frame size (FS) |
Cooling-air volumetric flow required (l/s)/(CFM) |
H x W x D, max. (mm) |
Weight, approx. (kg) |
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A |
4.8/10.2 |
173 x 73 x 149 |
1.3 |
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B |
24/51 |
202 x 149 x 172 |
3.4 |
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C |
54.9/116.3 |
245 x 185 x 195 |
5.7 |
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D |
2 x 54.9/2 x 116.3 |
520 x 275 x 245 |
17 |
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E |
2 x 54.9/2 x 116.3 |
650 x 275 x 245 |
22 |
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F without filter |
150/317.79 |
850 x 350 x 320 |
56 |
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F with filter |
150/317.79 |
1150 x 350 x 320 |
75 |
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FX |
225/478.13 |
1400 x 326 x 356 |
116 |
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GX |
440/935 |
1533 x 326 x 545 |
174 |
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CFM: |
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1) For further information see http://support.automation.siemens.com/WW/view/en/107669667
2) Applies to industrial control cabinet installations to NEC article 409/UL 508A.
Pulse frequency
Output |
Rated output current in A for a pulse frequency of |
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kW |
4 kHz |
6 kHz |
8 kHz |
10 kHz |
12 kHz |
14 kHz |
16 kHz |
Mains operating voltage 200 V 1/3 AC |
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0.12 to 5.5 |
Values correspond to the 4 kHz standard values. No derating, since 16 kHz standard. |
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7.5 |
28.0 |
26.6 |
25.2 |
22.4 |
19.6 |
16.8 |
14.0 |
11 |
42.0 |
37.8 |
33.6 |
29.4 |
25.2 |
21.0 |
16.8 |
15 |
54.0 |
48.6 |
43.2 |
37.8 |
32.4 |
27.0 |
21.6 |
18.5 |
68.0 |
64.6 |
61.2 |
54.4 |
47.6 |
40.8 |
34.0 |
22 |
80.0 |
72.0 |
64.0 |
56.0 |
48.0 |
40.0 |
32.0 |
30 |
104.0 |
91.0 |
78.0 |
70.2 |
62.4 |
57.2 |
52.0 |
37 |
130.0 |
113.8 |
97.5 |
87.8 |
78.0 |
71.5 |
65.0 |
45 |
154.0 |
134.8 |
115.5 |
104.0 |
92.4 |
84.7 |
77.0 |
Mains operating voltage 400 V 3 AC |
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0.37 |
1.3 |
1.3 |
1.3 |
1.3 |
1.3 |
1.2 |
1.0 |
0.55 |
1.7 |
1.7 |
1.7 |
1.6 |
1.5 |
1.4 |
1.2 |
0.75 |
2.2 |
2.2 |
2.2 |
2.0 |
1.8 |
1.5 |
1.3 |
1.1 |
3.1 |
2.9 |
2.8 |
2.5 |
2.2 |
1.9 |
1.6 |
1.5 |
4.1 |
3.7 |
3.3 |
2.9 |
2.5 |
2.1 |
1.6 |
2.2 |
5.9 |
5.6 |
5.3 |
4.7 |
4.1 |
3.5 |
3.0 |
3.0 |
7.7 |
6.9 |
6.2 |
5.4 |
4.6 |
3.9 |
3.1 |
4.0 |
10.2 |
9.2 |
8.2 |
7.1 |
6.1 |
5.1 |
4.1 |
5.5 |
13.2 |
11.9 |
10.6 |
9.2 |
7.9 |
6.6 |
5.3 |
7.5 |
19.0 |
18.1 |
17.1 |
15.2 |
13.3 |
11.4 |
9.5 |
11.0 |
26.0 |
23.4 |
20.8 |
18.2 |
15.6 |
13.0 |
10.4 |
15.0 |
32.0 |
30.4 |
28.8 |
25.6 |
22.4 |
19.2 |
16.0 |
18.5 |
38.0 |
34.2 |
30.4 |
26.6 |
22.8 |
19.0 |
15.2 |
22 |
45.0 |
40.5 |
36.0 |
31.5 |
27.0 |
22.5 |
18.0 |
30 |
62.0 |
58.9 |
55.8 |
49.6 |
43.4 |
37.2 |
31.0 |
37 |
75.0 |
67.5 |
60.0 |
52.5 |
45.0 |
37.5 |
30.0 |
45 |
90.0 |
76.5 |
63.0 |
51.8 |
40.5 |
33.8 |
27.0 |
55 |
110.0 |
93.5 |
77.0 |
63.3 |
49.5 |
41.3 |
33.0 |
75 |
145.0 |
112.4 |
79.8 |
68.9 |
58.0 |
50.8 |
43.5 |
90 |
178.0 |
- |
- |
- |
- |
- |
- |
110 |
205.0 |
- |
- |
- |
- |
- |
- |
132 |
250.0 |
- |
- |
- |
- |
- |
- |
160 |
302.0 |
- |
- |
- |
- |
- |
- |
200 |
370.0 |
- |
- |
- |
- |
- |
- |
Mains operating voltage 500 V 3 AC |
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0.75 |
1.4 |
1.2 |
1.0 |
0.8 |
0.7 |
0.6 |
0.6 |
1.5 |
2.7 |
2.2 |
1.6 |
1.4 |
1.1 |
0.9 |
0.8 |
2.2 |
3.9 |
2.9 |
2.0 |
1.6 |
1.2 |
1.0 |
0.8 |
4.0 |
6.1 |
4.6 |
3.1 |
2.4 |
1.8 |
1.5 |
1.2 |
5.5 |
9.0 |
6.8 |
4.5 |
3.6 |
2.7 |
2.3 |
1.8 |
7.5 |
11.0 |
8.8 |
6.6 |
5.5 |
4.4 |
3.9 |
3.3 |
11.0 |
17.0 |
12.8 |
8.5 |
6.8 |
5.1 |
4.3 |
3.4 |
15.0 |
22.0 |
17.6 |
13.2 |
11.0 |
8.8 |
7.7 |
6.6 |
18.5 |
27.0 |
20.3 |
13.5 |
10.8 |
8.1 |
6.8 |
5.4 |
22 |
32.0 |
24.0 |
16.0 |
12.8 |
9.6 |
8.0 |
6.4 |
30 |
41.0 |
32.8 |
24.6 |
20.5 |
16.4 |
14.4 |
12.3 |
37 |
52.0 |
39.0 |
26.0 |
20.8 |
15.6 |
13.0 |
10.4 |
45 |
62.0 |
52.7 |
43.4 |
40.3 |
37.2 |
32.6 |
27.9 |
55 |
77.0 |
67.4 |
57.8 |
52.0 |
46.2 |
42.4 |
38.5 |
75 |
99.0 |
84.2 |
69.3 |
64.4 |
59.4 |
52.0 |
44.6 |
Compliance with standards
CE marking
The MICROMASTER inverters meet the requirements of the Low-Voltage Directive 73/23/EEC.
Low-voltage directive
The inverters comply with the following standards listed in the Official Journal of the European Communities:
EN 60 204Safety of machinery, electrical equipment of machines
EN 61 800-5-1Electrical power drive systems with variable speed - Part 5-1: Requirements regarding safety - electrical, thermal and energy requirements
Machine directive
The inverters are suitable for installation in machines. Compliance with the machine directive 89/392/EEC requires a separate certificate of conformity. This must be furnished by the plant constructor or the installer of the machine.
EMC directive
Variable-speed electric drives
Part 3: EMC product standard including special test procedure.
The new EMC product standard EN 61 800-3 applies to electrical drive systems as of July 1, 2005. The transition period for the preceding standard EN 61 800-3/A11 dated February 2001 ends on October 1, 2007. The following explanations apply to frequency inverters of the 6SE6 series from Siemens:
- The EMC product standard EN 61 800-3 does not apply directly to a frequency inverter but to a PDS (Power Drive System), which comprises the complete circuitry, motor and cables in addition to the inverter.
Overview of MICROMASTER components and PDS categories
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First environment
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Category C1 |
Category C2 |
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Second environment
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Category C2 |
Category C3 |
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Category C4 |
Electromagnetic compatibility
No inadmissible electromagnetic emissions occur if the installation instructions specific to the product are correctly observed.
The table below lists the results of measurements relating to the emissions and immunity to interference of MICROMASTER inverters.
The inverters were installed with shielded motor cables and shielded control cables in accordance with the directives.
EMC phenomenon |
Relevant criteria |
Limit value |
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Emitted interference |
Conducted via mains cable |
150 kHz to 30 MHz |
Unfiltered devices, not tested. |
Emitted by the drive |
30 MHz to 1 GHz |
All devices. |
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ESD immunity |
ESD through air discharge |
Test severity level 3 |
8 kV |
ESD through contact discharge |
Test severity level 3 |
6 kV |
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Immunity to electrical fields |
Electrical field applied to unit |
Test severity level 3 80 MHz to 1 GHz |
10 V/m |
Immunity to burst interference |
Applied to all cable terminations |
Test severity level 4 |
4 kV |
Surge immunity |
Applied to mains cables |
Test severity level 3 |
2 kV |
Immunity to RFI emissions, conducted |
Applied to mains, motor and control cables |
Test severity level 3 |
10 V |
UL listing
UL and cUL listed power conversion equipment of UL category NMMS, in accordance with UL508C.
UL list number E121068 and E192450
For use in environments with pollution degree 2.
Also refer to the Internet at http://www.ul.com/