10
Wiring Examples
This
section
provides
wiring
examples
to
connect
a
Braking
Unit
and
other
peripheral
devices
to
the
main
circuits,
examples
of
wiring
a
transformer
to
Inverter
I/O,
and
other
aspects
of
Inverter
wiring.
K
KK
K Using a Braking Resistor Unit
This
example
shows
wiring
for
a
Braking
Resistor
Unit.
3G3RV-A2004
to
3G3RV-A2185
(200-V
class
Inverters
of
0.4
to
18.5
kW)
3G3RV-4004
to
3G3RV-A4185
(400-V
class
Inverters
of
0.4
to
18.5
kW)
Fig 10.2
K
KK
K Using a Braking Unit and Braking Resistor Unit
This
example
shows
wiring
for
a
Braking
Unit
and
Braking
Resistor
Unit.
3G3RV-A2220,
3G3RV-A2300
(200-V
class
Inverters
of
22
kW,
30
kW)
Fig 10.3
* 1. A transformer is not required for 200-V class
* 2. Remove the short-circuit bar (normally connected) from + 1 and
+ 2 when connecting a DC Reactor (Optional).
* 3. 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.
3-phase power
200 to 230 V 50/60 Hz
or 380 to 460 V
50/60 Hz
A sequence is required to turn
OFF the power supply for the ther-
mal overload relay trip contacts of
the Braking Resistor Unit.
Short-circuit bar
DC Reactor to
improve input
power factor
(Optional)
Braking Resistor overheating contacts
(Thermal overload relay trip contacts)
Braking Resistor Unit
*3
Inverter
Overload relay trip contact
of Braking Resistor Unit
Fault contacts
Motor
200-V class Inverters: Ground to
100 max., 400-V class Inverters:
Ground to 10 Ω max.)
R/L1
S/L2
T/L3
U/T1
V/T2
W/T3
MC
3-phase power
200 to 230 V 50/60 Hz
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 factor
(Optional)
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 overheating contacts
(Thermal overload relay trip contacts)
Ground to 100 max.
* 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
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