Toshiba VF-A7 instruction manual Explanation of terminals, Main circuit terminals

2.3Explanation of terminals

2.3.1Main circuit terminals

Figure below shows an example of the wiring of the main circuit. Use optional devices, as required.

■Connecting a power source and a motor

Power source

VF-A7

Connect the power	Connect the motor
source to the terminals	cables to the terminals
R, S and T.	U, V and W.

No-fuse breaker

R/L1 S/L2 T/L3

U/T1 V/T2 W/T3 G/E Motor

E

■Connecting peripheral devices

Magnetic

Radio noise

Non-fuse contactor

Input

reduction filter

Surge suppressing

filter

breaker

reactor

(high-attenuation)

Motor

Ｒ/L1

Ｕ/T3

Power

Inverter

IM

Ｓ/L2

Ｖ/T2

source

Ｔ/L3

Ｗ/T1

PA P0

PA PB

Zero-phase

Simplified

radio noise filter

reactor

Note) Connect a dynamic

braking unit

between

the terminals PA and

PC, if necessary.

■Main circuit

DC reactor

Dynamic braking resistor(See Note.)

Terminal symbol

Function

G/E

Grounding terminal for the inverter's enclosure.

200V class:

0.4～7.5 and 75, 90kW:

3-phase 200～230V-50/60Hz

R/L1，S/L2，T/L3

11～55kW:

3-phase 200～220V-50Hz,200～230V-60Hz

400V class:

0.75～22, 110～280kW:

3-phase 380～460V-50/60Hz

30～75kW:

3-phase 380～440V-50Hz,380～460V-60Hz

U/T1，V/T2，W/T3

Used to connect a motor (3-phase inductive motor)

Used to connect a power source for the control circuit (Optional for the 22kW and

smaller models, though these terminals are provided for them)

200V class:

0.4～7.5 and 75, 90kW: Single-phase 200～230V-50/60Hz

11～55kW: Single-phase 200～220V-50Hz,200～230V-60Hz

400V class:

R0，S0

0.75～22, 110～280kW: 3-phase 380～460V-50/60Hz

(R46, R41)

30～75kW: 3-phase 380～440V-50Hz,380～460V-60Hz

Between R46-S0: Single-phase 415～440V-50Hz, 415～460V-60Hz

Between R41-S0: Single-phase 380～415V-50Hz, 380～415V-60Hz

*Maximum allowable output of control power source:

200V class: 0.4～30kW…50VA, 37～90kW…60VA

400V class: 0.75～30kW…50VA, 37～75kW…150VA,

110 and 132kW…200VA, 160～280kW…350VA

PA, PB

Used to connect a dynamic braking resistor (For the optional dynamic braking unit,

connect it between PA and PC.)the settings of the parameters ,  and/or

, as required, when connecting an external resistor.

B-6