Siemens SINUMERIK 840D sl Manual page 34

Description
4.4 Power supply
Table 4-2
Rated voltage
Non-periodic overvoltages
Transient voltage interruptions
Additional references
Recommended power supply units and tables for calculating power consumption for
interconnection with SINAMICS S120 modules can be found in the chapter entitled Control-
Cabinet Construction and EMC Booksize in the SINAMICS S120 Booksize Power Units
Manual.
See also
Power supply X124 (Page 57)
34
Requirements of the DC supply
According to EN 61131-2
Voltage range (average value)
Voltage ripple peak-to-peak
Ramp-up time at power-on
Duration of overvoltage
Restoration time
Events per hour
Outage time
Restoration time
Events per hour
24 V DC
20.4 to 28.8 V DC
5 % (unfiltered 6-pulse
rectification)
Any
≤ 35 V
≤ 500 ms
≥ 50 s
≤ 10
≤ 3 ms
≥ 10 s
≤ 10
Manual, 07/2007, 6FC5397-0AP10-2BA0
NCU