Fagor DDS Series Hardware Manual page 219

The power supply module must be capable of supplying the peak power required by the set of
2.
motors and drives connected to it.
T. H5/11 Second criteria for selecting the power supply for the whole system.
SECOND CRITERIA
The power supply module must be capable of supplying the peak power required (depending
on the duty cycles) by all the motor-drive sets connected to it.
REQUIRED PEAK POWER:
NON-REGENERATIVE
POWER SUPPLIES
REGENERATIVE
POWER SUPPLIES
REGULATED
REGENERATIVE
POWER SUPPLIES
IN RPS MODE
REGULATED
REGENERATIVE
POWER SUPPLIES
IN RB6 MODE
NOTE. When using two power supplies on the same machine, they must make up two independent
groups with their own drives. Only the SERCOS-II ring or CAN bus (if there is one) may be common to
both groups.
NOTE . In RPS mode, if the peak power required by the set is greater than 108 kW for XPS power
supplies or greater than 104 kW for RPS power supplies, the set of motors and drives must be divided
into groups and powered by different power supplies.
3
Peak power
(depending on the duty cycle)
In kW
If B < 75
If 75 < B < 195
If B > 195
If B < 55
If 55 < B < 108
If B > 108
If B < 26
If 26 < B < 59
If 59 < B < 97
If 97 < B < 104
If B < 26
If 26 < B < 55
If 55 < B < 97
DANGER. Never connect the power supplies in parallel!
+ =
2 B
Power supply
module
Model
PS-25B4
PS-65A
- Read note -
XPS-25
XPS-65
- Read note -
RPS-20
RPS-45
RPS-75
RPS-80
RPS-20
RPS-45
RPS-75/RPS-80
   Selection criteria
5.
kW
DDS
HARDWARE
Ref.1912
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