Using A Braking Unit And Three Braking Resistor Units In Parallel - YASKAWA Varispeed CIMR-G7A Instruction Manual

Using a Braking Unit and Three Braking Resistor Units in Parallel

This example shows wiring for using three Braking Resistor Units in parallel.
3-phase power
380 to 480 V
50/60 Hz
Overload relay trip contact
of Braking Resistor Unit
-14
10
A sequence is required to turn OFF the
power supply for the thermal overload relay
trip contacts of the Braking Resistor Unit.
MCCB
Fault contacts
Forward Run/Stop
Reverse Run/Stop
Braking Unit
External fault
* Disable stall prevention during deceleration by setting L3-04 to Resistor Unit. The motor may
not stop within the deceleration time if this setting is not changed.
Thermal
protector
Thermal switch
R/L1
U/T1
Inverter
V/T2
S/L2
W/T3
T/L3
Cooling fan
Voltage
setting
Fault contact output
Forward Run Com-
mand (forward run
when ON)
Reverse Run Com-
mand (reverse run
when ON)
Fig 10.9
Thermal Thermal
protector protector
Braking Braking
Resistor Resistor
Unit Unit
Braking Unit
Motor
Ground to 10 Ω max.
Braking
Resistor
Unit