Wiring Main Circuit Terminals
2
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21
Connecting Braking Units in Parallel
When connecting two or more Braking Units in parallel, use the wiring and connectors shown in Fig 2.14.
There are connectors for selecting whether each Braking Unit is to be a Master or Slave. Select “Master” for
the first Braking Unit only and select “Slave” for all other Braking Units (i.e., from the second Unit onwards).
Fig 2.14 Connecting Braking Units in Parallel
Breaking Unit Application Precautions
When using a Braking Resistor Unit, create a sequence to detect overheating of the braking resistor.
Inverter
Braking resistor overheating con-
tacts (Thermal protector contacts)
Braking resistor overheating con-
tacts (Thermal protector contacts)
Braking resistor overheating con-
tacts (Thermal protector contacts)
Braking
Resistor
Unit
Braking
Resistor
Unit
Braking
Resistor
Unit
Le
v
e
l
de
tec
to
r
Braking Unit #2
Braking Unit #3
Braking Unit #1
Cooling fin overheating con-
tacts (thermostat contacts)
Cooling fin overheating con-
tacts (thermostatic contacts)
Cooling fin overheating con-
tacts (thermostatic contacts)
