Siemens
СРЕДСТВА ПРОМЫШЛЕННОЙ АВТОМАТИЗАЦИИ
официальный партнер Сименс
Каталог СА01 2018
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Derating

Water-cooled SINAMICS S120 chassis format units are rated for an ambient temperature of 45 °C and installation altitudes up to 2000 m above sea level. At ambient temperatures > 45 °C, the output current must be reduced. Ambient temperatures above 50 °C are not permissible. At installation altitudes > 2000 m above sea level, it must be taken into account that the air pressure, and therefore air density, decreases as the height increases. As a consequence, the cooling efficiency and the insulation capacity of the air also decrease.

Note:

Compared to the liquid-cooled chassis format units, the inlet temperatures are 7 K lower, as a heat exchanger is not required.

Current derating as a function of the temperature of the cooling liquid 1)

Current derating as a function of ambient temperature 1)

1) The factors of the two curves must not be multiplied. The highest value in each case must be assumed for the purposes of calculation, so that the derating factor in the worst-case scenario is 0.9.

Permissible ambient temperature as a function of installation altitude

Voltage derating as a function of installation altitude

Current derating as a function of the pulse frequency

To reduce motor noise or to increase output frequency, the pulse frequency can be increased relative to the factory setting (1.25 kHz or 2 kHz). When the pulse frequency is increased, the derating factor of the output current must be taken into account. This derating factor must be applied to the currents specified in the technical specifications.

For additional information, please refer to the SINAMICS Low Voltage Engineering Manual.

The following tables list the rated output currents of the SINAMICS S120 Motor Modules with pulse frequency set in the factory as well as the current derating factors (permissible output currents referred to the rated output current) for higher pulse frequencies.

Derating factor of the output current as a function of the pulse frequency for units with a rated pulse frequency of 2 kHz

Power Module
Motor Module

Type rating
at 400 V

Output current at 2 kHz

Derating factor at pulse frequency

6SL3315-...
6SL3325-...

kW (hp)

A

2.5 kHz

4 kHz

5 kHz

7.5 kHz

8 kHz

380 ... 480 V 3 AC

1TE32-1AA3

110 (150)

210

95 %

82 %

74 %

54 %

50 %

1TE32-6AA3

132 (200)

260

95 %

83 %

74 %

54 %

50 %

1TE33-1AA3

160 (250)

310

97 %

88 %

78 %

54 %

50 %

1TE35-0AA3

250 (400)

490

94 %

78 %

71 %

53 %

50 %



Derating factor of the output current as a function of the pulse frequency for units with a rated pulse frequency of 1.25 kHz

Motor Module

Type rating at 400 V or 690 V

Output current at 1.25 kHz

Derating factor at pulse frequency

6SL3325-...

kW (hp)

A

2 kHz

2.5 kHz

4 kHz

5 kHz

7.5 kHz

8 kHz

380 ... 480 V 3 AC

1TE37-5AA7

400 (600)

745

83 %

72 %

64 %

60 %

40 %

-

1TE41-0AA7

560 (800)

985

92 %

87 %

70 %

60 %

50 %

47 %

1TE41-2AA7

710 (1000)

1260

92 %

87 %

70 %

60 %

50 %

47 %

1TE41-4AA7

800 (1150)

1405

97 %

95 %

74 %

60 %

50 %

47 %

500 ... 690 V 3 AC

1TG31-0AA3

90 (75)

100

92 %

88 %

71 %

60 %

40 %

-

1TG31-5AA3

132 (150)

150

90 %

84 %

66 %

55 %

35 %

-

1TG32-2AA3

200 (200)

215

92 %

87 %

70 %

60 %

40 %

-

1TG33-3AA3

315 (300)

330

89 %

82 %

65 %

55 %

40 %

-

1TG34-7AA7

450 (450)

465

92 %

87 %

67 %

55 %

35 %

-

1TG35-8AA7

560 (600)

575

91 %

85 %

64 %

50 %

35 %

-

1TG38-1AA7

800 (800)

810

97 %

95 %

71 %

55 %

35 %

-

1TG41-0AA7

1000 (1000)

1025

91 %

86 %

64 %

50 %

30 %

-

1TG41-3AA7

1200 (1250)

1270

87 %

79 %

55 %

40 %

25 %

-

1TG41-6AA7

1500 (1500)

1560

87 %

79 %

55 %

40 %

25 %

-



 

The following tables list the maximum achievable output frequency as a function of the pulse frequency:

Maximum output frequencies achieved by increasing the pulse frequency in Vector mode

Pulse frequency

Max. achievable output frequency

1.25 kHz

100 Hz

2 kHz

160 Hz

2.5 kHz

200 Hz

4 kHz

320 Hz

5 kHz

400 Hz



Maximum output frequencies achieved by increasing the pulse frequency in Servo mode

Pulse frequency

Max. achievable output frequency

2 kHz

300 Hz

4 kHz

300/550 Hz 1)



1) Higher frequencies on request. For further information see https://support.industry.siemens.com/cs/document/104020669

Pressure drop

Pressure drop for water-cooled chassis format units

The pressure drop characteristic curves are valid for water. If antifreeze is used, the characteristic curves typically shift to the left.

For further information, please refer to the SINAMICS Low Voltage Engineering Manual.

Overload capability

Water-cooled SINAMICS S120 units have an overload reserve, e.g. to handle breakaway torques. If larger surge loads occur, this must be taken into account in the configuration. For drives with overload requirements, the appropriate base-load current must, therefore, be used as a basis for the required load.

The permissible overload levels are valid under the prerequisite that the drive units are operated with their base-load current before and after the overload condition based on a duty cycle duration of 300 s.

Another precondition is that the Power Modules or the Motor Modules are operated at their factory-set pulse frequency at output frequencies > 10 Hz.

For temporary, periodic duty cycles with high variations of load within the duty cycle, the relevant sections of the SINAMICS Low Voltage Engineering Manual must be observed.

Power Modules and Motor Modules

The base-load current for a low overload IL is the basis for a duty cycle of 110 % for 60 s or 150 % for 10 s.

Low overload

The base-load current IH for a high overload is based on a duty cycle of 150 % for 60 s or 160 % for 10 s.

High overload

The following applies to the 6SL3325-1TG41-3AA7 and 6SL3325-1TG41-6AA7 Motor Modules:
The short-time current for low overload must be reduced from 150 % to 130 % for 10 s. At 10 s and 60 s, the short-time current for high overload must be reduced to 130 %. The duty cycle remains unchanged.

Low overload for 6SL3325-1TG41-3AA7 and 6SL3325-1TG41-6AA7 Motor Modules

High overload for 6SL3325-1TG41-3AA7 and 6SL3325-1TG41-6AA7 Motor Modules

Line Modules

The base-load current for a high overload IH DC is the basis for a duty cycle of 150 % for 60 s or Imax DC for 5 s.

High overload

















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