Fagor DDS Series Hardware Manual page 85

WARNING. Never install an APS-24 to the DC bus of a DDS system with a
regenerative power supply RPS if the model of the APS-24 is PF 23A or
older.
Observe the PF version on the versions label. Depending on this version, it will
be possible to connect the APS-24 or not to the DC BUS of the DDS system with
RPS regenerative power supplies.
F. H2/42
Auxiliary power supply, APS-24. Version label.
INFORMATION. It will not be necessary to install external protection fuses
i
in these power lines of the auxiliary power supply. They are already
integrated in the power supply itself.
Remember that the purpose of connecting an auxiliary power supply APS-
24 to the DC BUS of a DDS system is to ensure the supply to all the control
circuits of the power supply and of the drives connected to the DC BUS in
case of a mains power outage in the auxiliary power supply ensuring a
controlled stop of the moving axes instead of braking out of control by
friction.
Bear in mind that although RPS power supplies come with an internal
auxiliary power supply offering 3 outputs with 24 V DC and a total of 8 A,
192 W, this power may not be enough to feed the control circuits of all the
modules connected or other elements (e.g. a fan). That is why it may be
necessary to also install an APS-24 auxiliary power supply to guarantee all
the power needed.
The APS-24 auxiliary power supply offers 3 outputs with 24 V DC and a
total of 10 A, 240 W.
For further information about the auxiliary module APS-24, see chapter 4.
AUXILIARY MODULES in this manual.
Connection of the choke
INFORMATION. RPS regenerative regulated power supplies, unlike XPS,
i
regenerative power supplies do not have connection terminals called CH1
and CH2 at the bottom of the module for connecting the chokes.
These chokes called choke RPS are connected in series with each phase
of the three-phase line between the MAIN FILTER A and the RPS power
supply module. The following table shows the choke associated with the
power supply:
Power supply
3-phase
CHOKE
For further detail, see chapter 6. POWER LINE CONNECTION and chapter
8. INSTALLATION in this manual.
MANDATORY. CHOKES are a must to limit the current circulating from the
power bus to mains.
RPS-80 / RPS-75 RPS-45
CHOKE CHOKE
RPS-75-3 RPS-45
  Power supplies
2.
RPS-20
CHOKE
DDS
RPS-20
HARDWARE
Ref.1912
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