ENG_607504.XML
Derating data in chassis‑2 format
Air-cooled SINAMICS S120 units in chassis‑2 format and the associated system components are rated for an ambient temperature of 45 °C and installation altitudes up to 1000 m above sea level.
At ambient temperatures > 45 °C, the output current must be reduced. Ambient temperatures above 60 °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.
Due to the reduced cooling efficiency, it is necessary, on the one hand, to reduce the ambient temperature and on the other hand, to reduce the heat loss in the built-in unit by reducing the output current, whereby ambient temperatures lower than 45 °C may be offset to compensate.
The following table lists the permissible output currents depending on the installation altitude and ambient temperature. The specified values already include a permitted compensation in respect of installation altitude and ambient temperatures < 40 °C – temperature at the air intake of the built-in unit.
The values apply under the precondition that a cooling air flow through the devices is guaranteed as specified in the technical specifications.
As an additional measure for installation altitudes from 2000 m up to 5000 m, an isolating transformer is required in order to reduce transient overvoltages according to EN 60664‑1.
For additional information, please refer to the SINAMICS Low Voltage Engineering Manual.
Current-derating factors for SINAMICS S120 chassis‑2 units as a function of the ambient/air intake temperature and the installation altitude
|
Installation altitude above sea level
|
Current derating factor (as a percentage of the rated current)
for an ambient/air intake temperature of
|
|
m (ft)
|
20 °C (68 °F)
|
25 °C (77 °F)
|
30 °C (86 °F)
|
35 °C (95 °F)
|
40 °C (104 °F)
|
45 °C (113 °F)
|
50 °C (122 °F)
|
55 °C (131 °F)
|
60 °C (140 °F)
|
|
0 ... 1000 (0 ... 3281)
|
100 %
|
100 %
|
100 %
|
100 %
|
100 %
|
100 %
|
83 %
|
69 %
|
54 %
|
|
1001 ... 1500 (3284 ... 4921)
|
100 %
|
100 %
|
100 %
|
100 %
|
100 %
|
98 %
|
81 %
|
67 %
|
52 %
|
|
1501 ... 2000 (4925 ... 6562)
|
100 %
|
100 %
|
100 %
|
100 %
|
100 %
|
93 %
|
78 %
|
65 %
|
50 %
|
|
2001 ... 2500 (6565 ... 8202)
|
100 %
|
100 %
|
100 %
|
100 %
|
96 %
|
|
|
|
|
|
2501 ... 3000 (8205 ... 9843)
|
100 %
|
100 %
|
100 %
|
99 %
|
|
|
|
|
|
|
3001 ... 3500 (9846 ... 11483)
|
100 %
|
100 %
|
100 %
|
|
|
|
|
|
|
|
3501 ... 4000 (11486 ... 13123)
|
100 %
|
100 %
|
96 %
|
|
|
|
|
|
|
|
4001 ... 4500 (13127 ... 14764)
|
100 %
|
97 %
|
|
|
|
|
|
|
|
|
4501 ... 5000 (14767 ... 16404)
|
98 %
|
|
|
|
|
|
|
|
|
Current derating for Motor Modules in chassis‑2 format 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 (2.5 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 table lists the rated output currents of the Motor Modules in chassis‑2 format with pulse frequency set at 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 2.5 kHz
|
Motor Module
|
Type rating
at 400 V
|
Output current
at 2.5 kHz
|
Derating factor at pulse frequency
|
|
6SL3321-...
|
kW
|
A
|
4 kHz
|
5 kHz
|
7.5 kHz
|
8 kHz
|
|
380 ... 480 V 3 AC
|
|
1TE36-6AA0
|
315
|
655
|
78 %
|
67 %
|
48 %
|
45 %
|
|
1TE37-4AA0
|
355
|
740
|
78 %
|
67 %
|
48 %
|
45 %
|
|
1TE38-1AA0
|
400
|
840
|
78 %
|
67 %
|
48 %
|
45 %
|
|
1TE38-8AA0
|
450
|
910
|
78 %
|
67 %
|
48 %
|
45 %
|
|
1TE41-0AA0
|
500
|
975
|
78 %
|
67 %
|
48 %
|
45 %
|
|
1TE41-1AA0
|
560
|
1075
|
78 %
|
67 %
|
48 %
|
45 %
|
|
1TE41-2AA0
|
630
|
1200
|
78 %
|
67 %
|
48 %
|
45 %
|
|
1TE41-3AA0
|
710
|
1325
|
78 %
|
67 %
|
48 %
|
45 %
|
|
1TE41-5AA0
|
800
|
1495
|
75 %
|
62 %
|
39%
|
36 %
|
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
The adjustable pulse frequencies – and therefore the output frequencies that can be achieved with the factory-set current controller clock cycles – are listed below.
|
Current controller clock cycle
TI
|
Adjustable pulse frequency
fp
|
Max. achievable output frequency fA
|
|
V/f mode
|
Vector mode
|
Servo mode
|
|
400 μs
|
2.5 kHz
|
208 Hz
|
208 Hz
|
–
|
|
5.0 kHz
|
416 Hz
|
300 Hz
|
–
|
|
7.5 kHz
|
550 Hz 1)
|
300 Hz
|
–
|
1) With the "High output frequencies" license, which can be ordered as option J01 on the CompactFlash card for SINAMICS S120, the maximum output frequency is increased up to 650 Hz. For more information, see https://support.industry.siemens.com/cs/document/104020669
Overload capability
SINAMICS S120 built-in 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 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.
Motor Modules in chassis‑2 format
The base-load current for a low overload IL is based on a duty cycle of 110 % for 60 s.
G_D213_XX_00118
Low overload
The base-load current for a high overload IH is based on a duty cycle of 150 % for 60 s.
G_D213_XX_00119
High overload
The base-load current for duty cycle IS6 is based on a duty cycle of 200 % for 6 s.
G_D213_XX_00120
Duty cycle S6 with initial load with a duty cycle duration of 60 s
Active Line Modules in chassis‑2 format
The base-load current for low overload IL_DC is based on a duty cycle of 115 % for 60 s with a duty cycle duration of 300 s, the maximum current Imax_DC can flow for 5 s.
G_D213_XX_00126
Low overload
The duty cycle with maximum current Imax_DC is based on a duty cycle of 150 % for 5 s with a duty cycle duration of 300 s.
G_D213_XX_00127
Duty cycle with maximum current
