Technical Data
4.4 D4x5 power supply
D4x5
Manual, 03/2007 Edition
53
4.4 D4x5 power supply
External 24 V power supply
Power is supplied to the control unit by an external 24 V power supply (e.g., SITOP).
Table 4-10 Input voltage specification
Input voltage Typical current
consumption
Maximum current
consumption
D425 and
D435
D445 D425 and
D435
D445 D425 and
D435
D445
Minimum input voltage 20.4 V 20.4 V 0.7 A 2.35 A 9.8 A 10.6 A
Nominal Input voltage 24 V 24 V 0.6 A 2.0 A 8.4 A 9.0 A
Maximum input voltage 28.8 V 28.8 V 0.5 A 1.67 A 7.0 A 7.5 A
Additional references
Recommended power supply units and tables for calculating the current consumption for the
assembly with SINAMICS S120 modules can be found in the "Cabinet Construction and
EMC Booksize" chapter in the
SINAMICS S120 Booksize Power Units
Manual.
Note
A primary-side voltage dip for 20 ms must not cause the voltage on the secondary side
(24 V) to fall below the minimum permissible input voltage for the control unit.
4.5 Rated voltage for operation of the D4x5
The control unit operates with a rated voltage. The following table contains the rated voltage
and the corresponding tolerance range.
Table 4-11 Rated voltage for the control unit
Rated voltage Tolerance range
24 VDC 20.4 VDC to 28.8 VDC
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