Installation Of Electromagnetic Contactor - Toshiba TOSVERT VF-P7 Instruction Manual

Among the wiring equipment shown in the above table, the magnetic contactors (MC) and overload relays
(THR) are new models of the ESPER Mighty J series. When using old models of the Mighty J series, refer
to the following comparison table that shows consistency between models of the two series.
Magnetic contactor (MC)
Mighty J series
C50J
C65J
C80J
C100J
LC1-D150
LC1-F185
LC1-F225
LC1-F330
LC1-F400
LC1-F630

9. 2. Installation of electromagnetic contactor

When the inverter is used without electromagnetic contactor (MC) in the primary circuit, use the
MCCB (with voltage tripping device) to make the primary circuit open when the inverter
protection circuit is in operation.
When the damping resistor/damping resistance unit is used, install the electromagnetic
contactor (MC) or fuseless circuit breaker with power tripping device in the temporary power
supply circuit of the inverter so that the power circuit becomes open by operation of the error
detection relay (EL) built in the inverter or externally installed overload relay.
■Electromagnetic contactor in the primary circuit
If an electromagnetic contactor is installed in the power supply circuit of the inverter, it prevents
the inverter from power failure, tripping of overload relay (Th-Ry), cutout of the inverter
protection circuit after its operation, and double starting.
If the FL contact of the error detection relay built in the VF-P7 is connected with the operation
circuit of the primary electromagnetic contactor (MC), the MC is tripped when the inverter
protection circuit is actuated.
Power
supply
ESPER Mighty series
C50A
C65A
C80A
C100A
C125A
C180A
C220A
C300A
C400A
C600A
ＭＣＣＢ ＭＣ
Example of electromagnetic contactor connection in primary circuit
Overload relay(THR)
Mighty J series
T65J
T100J
T115J
T150J
T185J
LR9-F53
LR9-F73
ＶＦ−Ｐ７
Ｒ Ｕ
Ｓ Ｖ
Ｔ Ｗ
ＳＴ
Ｆ
Ｒ
ＣＣ
I-3
ESPER Mighty series
T65A
T80A
T125A
T150A
T180A
T220A
T400A
Moter
ＩＭ
Operation preparation
Forward
Reverse