Fagor DDS Series Hardware Manual page 277

Connection diagrams
Configuration
for connecting the
internal
Ballast resistor
Ri Re
C
ONTROL
Configuration
for connecting the
internal
Ballast resistor
F. H8/12
Configuration of the electrical connection of the Ballast resistor in power
supplies.
WARNING. Never connect an external resistor in parallel with the internal
Ballast resistor. It may cause severe damage to the system.
How to configure this connection on compact drives
Internal or external resistor?
INFORMATION.
Compact modules ACD/SCD/CMC 1.08/1.15 have an internal Ballast
resistor. If necessary, an external resistor may be connected instead of an
internal. See the electrical configuration in the diagrams of the figure and read
i
the warning below.
Compact modules ACD/SCD/CMC 1.25/2.35/2.50 and SCD 2.75 do not have
an internal Ballast resistor. FAGOR supplies an external Ballast resistor
associated with each one of these modules as an accessory with the unit.
Always connect according to configuration (L+, Re). See the electrical
configuration in the diagrams of the figure.
WARNING. When connecting an external braking resistor (Ballast) on
ACD/SCD/CMC 1.08/1.15 modules, make sure that its Ohm value is exactly
the same as that of its internal Ballast resistor. See table T. H3/18 which
indicates this value.
Configuration
for connecting the
external
Ballast resistor
L+
Configuration
for connecting the
external
Ballast resistor
Re
Ri L+
C
ONTROL
   Installation
Ri Re L+
C
ONTROL
Ri Re L+
C
ONTROL
8.
DDS
HARDWARE
Ref.1912
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