Standard Connection Method; Connection To Power Supply And Motor; Connection To Peripheral Devices - Toshiba TOSVERT VF-AS3 Instruction Manual

2. 3. 2

Standard connection method

• Do not connect power supply to the output (motor side) terminals [U/T1], [V/T2] and [W/T3].
Connecting power supply to the output will damage the inverter and result in fire.
• Do not insert a braking resistor between DC terminals [PA/+] and [PC/-] or [PO] and[PC/-].
This will result in fire.
Please connect the braking resistor in accordance with the instruction manual.
• Do not touch wires of equipment (e.g. MCCB) that is connected to the inverter power side at
Prohibited
least 15 minutes after turning off the power.
If an electric charge remains in a capacitor in the inverter, touching the wires before the indi-
cated time will result in electric shock.
• The grounding wire must be connected securely.
If the grounding wire is not securely connected, when the inverter has failure or earth leakage,
this will result in electric shock or fire.
Be
grounded
The wiring of the power supply and motor is connected to the power terminal block and the wiring of
external control equipment such as control signals to the control terminal block.

■ Connection to power supply and motor

This diagram shows a standard wiring of the power circuit.
Connection to the power supply and motor wiring is common to all the types.
Power supply
Molded-case
circuit breaker
or
Earth leakage
circuit breaker

■ Connection to peripheral devices

This diagram shows an example of connection to peripheral devices.
Molded-case
circuit
Magnetic Input
breaker
contactor reactor
Note 2)
Power
supply
Simple radio
noise reduction
filter
WARNING
Inverter
Connect the power supply Connect the motor to [U/T1],
to [R/L1], [S/L2], and [T/L3]. [V/T2], and [W/T3].
R/L1 S/L2 T/L3 U/T1 V/T2 W/T3
High-attenuation
radio noise
reduction filter
Inverter
R/L1
S/L2
T/L3
PA/+ PO
DC reactor
2-23
Motor
Motor-end surge voltage
suppression filter
U/T1
V/T2
W/T3
PA PB
Zero-phase
reactor
Note 1) Connect between PA/+ and PC/-
when mounting to a braking unit.
Note 2) Or Earth leakage circuit breaker.
Braking resistor
Note 1)
E6582062
E
Motor
M
2. Installation and wiring
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3
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