Fagor DDS Series Hardware Manual page 45

Terminal strip to connect the Ballast resistor
The power supply is supplied from factory with a wire jumper between
terminals Ri and L+. This configuration of the power supply means that it
comes from the factory with its internal Ballast resistor.
However, if with this internal resistor it is not possible to dissipate enough
power (e.g. when braking), the configuration must be modified so the power
supply can work with an external ballast resistor capable of dissipating that
energy. Remove the wire between terminals Ri and L+ and connect the
proper external resistor between terminals Re and L+. See the diagram in
the figure.
Removing the jumper between Ri and L+ and not connecting an external
ballast resistor generates error code
25B4 power supplies, the power DC BUS will not be charged.
Here is a graphic representation of the two possible configurations:
Configuration for connecting the
internal Ballast resistor
Ri Re L+
CONTROL
F. H2/9
Ballast resistor connection configurations.
The following table shows the values for gap, tightening torque (wire entry
holes) and other data regarding the screw-on terminals of the ballast resistor
according to power supply model:
T. H2/9 Connection terminals of the ballast resistor. Technical data.
Connector data
Gap (mm)
Min./max. tightening torque (N·m)
Screw thread
Min./max. section (mm²)
Rated current In (A)
Wire data
Length to strip (mm)
These power supply carry a protection against over-temperature which
E301
triggers error code
reaching 105°C/221°F.
E215 E304
or on the display. On PS-
Configuration for connecting the
external Ballast resistor
PS-25B4
10.16
1.2/1.5
M4
0.5/16
76
10
on the display and stops its operation when
  Power supplies
Ri Re L+
CONTROL
PS-65A
-
2/2.3
M5
0.5/25
76
16
HARDWARE
2.
DDS
Ref.1912
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