Selection criteria
SELECTING CRITERIA
Power supply selection
5.
225
DDS
HARDWARE
Ref.1310
2. The power supply module must be capable of supplying the peak power required by the set
of motors and drives connected to it.
NOTE
. 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.
T. H5 /11 Second criteria for selecting the power supply for the whole system.
DANGER. Never connect the power supplies in parallel!
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:
3
+
2
=
B
kW
Peak power
(depending on the duty cycle)
Power supply
module
In kW Reference
NON-REGENERATIVE
POWER SUPPLIES
If B < 75 PS-25B4
If 75 < B < 195 PS-65A
If B > 195 - Read note -
REGENERATIVE
POWER SUPPLIES
If B < 55 XPS-25
If 55 < B < 108 XPS-65
If B > 108 - Read note -
REGULATED
REGENERATIVE
POWER SUPPLIES
If B < 26 RPS-20
If 26 < B < 59 RPS-45
If 59 < B < 97 RPS-75
If 97 < B < 104 RPS-80
NOTE. When using two power supplies on the same machine, they must make up two
independent groups with their own drives. Only the SERCOS ring or CAN bus (if there is
one) may be common to both groups.
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