Fagor DDS, Hardware Manual

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   Selection criteria
232
5.
S
E
LECT
ING CRI
T
ERIA
Power
supply selection
224
DDS
HARDWARE
Ref.1310
Power supply selecting criteria
1. The power supply module must be capable of supplying the power required by the set of
motors and drives connected to it.
NOTE. If the power required by the set is greater than 80 kW, the set of motors and drives must be di-
vided into groups and powered by different power supplies.
MANDATORY. Note that FM9 spindle motors whose references are FM9-B055-
C5C  -E01 and FM9-B071-C5C  -E01 will necessarily be associated with RPS-75
and RPS-80 power supplies respectively.
T. H5/10 First criteria for selecting the power supply for the whole system.
DANGER. Never connect the power supplies in parallel!
FIRST CRITERIA
The power supply module must be capable of supplying the
power required by all the motor-drive sets connected to it.
REQUIRED POWER:
1
+
2
=
A
kW
Rated Power
(in duty cycle S1) Power supply
module
In kW Reference
If A < 20 RPS-20
If 20 < A < 25 PS-25B4, XPS-25
If 25 < A < 45 RPS-45
If 45 < A < 65 PS-65A, XPS-65
If 65 < A < 75 RPS-75
If 75 < A < 80 RPS-80
If A > 80
(*)
(*)
Until reaching the rated power demanded from the power supply. All the
required power cannot be supplied, hence 2 power supplies will be needed.
NOTE. When using two power supplies on the same machine, they must make up two inde-
pendent groups with their own drives. Only the SERCOS ring or CAN bus (if there is one)
may be common to both groups.