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10
-8
Using a Braking Unit and Braking Resistor Unit
This example shows wiring for a Braking Unit and Braking Resistor Unit.
3G3PV-A2220-E, 3G3PV-A2300-E (200-V class Inverters of 22 kW, 30 kW)
3-phase power
200 to 230 V 50/60
A sequence is required to turn
OFF the power supply for the
thermal overload relay trip con-
tacts of the Braking Resistor
Unit.
DC Reactor
to improve
input power
Short-circuit bar
MCCB
Overload relay trip contact
of Braking Resistor Unit
Fault contacts
Braking Unit
(Optional)
Inverter
Motor
Level
detector
Braking Resistor
Unit
*2
(Optional)
Braking Resistor overheat-
ing contacts (Thermal overload relay
Ground to 100
Ω
* 1. Remove the short-circuit bar (normally connected) from + 1 and +
2 when connecting a DC Reactor (Optional).
* 2. Disable stall prevention during deceleration by setting L3-04 and
using a Braking Resistor Unit. The motor may not stop within the
deceleration time if this setting is not changed.
Forward Run/Stop
Reverse Run/Stop
Braking Unit
External fault
Forward run command (forward run when ON)
Reverse run command (reverse run when ON)
R/L1
S/L2
T/L3
U/T1
V/T2
W/T3
Forward Run/Stop