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Dc Power Supply - Siemens SIMATIC IPC277D Operating Instructions Manual

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9.4.5.3

DC power supply

Input voltage
Power consumption
Power failure buffering
Maximum continuous output power
The performance specifications apply to the power supply component, but not to the device.
1
Note
Inrush current
The device needs an inrush current of at least 4.5 A for 25 ms.
The peak value of the inrush current depends on the input voltage and the impedance of the
24 V source; peak currents in excess of 4.5 A are possible. This will not have a negative
impact on device functionality.
SIMATIC IPC277D
Operating Instructions, 12/2016, A5E03409486-AE
1
1
Technical specifications
9.4 Technical specifications
24 VDC (19.2 to 28.8 VDC)
Max. 72 W
Hold-up time > 15 ms
(DC_FAIL becomes active after > 5 ms)
60 W
127

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