Description Of Terminals; Main Circuit Terminals - Toshiba TOSVERT VF-AS1 Instruction Manual

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2.3

Description of terminals

2.3.1 Main circuit terminals

This diagram shows an example of wiring of the main circuit. Use options if necessary.
Power supply and motor connections
Power supply
2
Connection with peripheral equipment
No-fuse
breaker
Power
supply
Main circuit
Terminal symbol
R/L1, S/L2, T/L3
U/T1, V/T2, W/T3
PA/+, PB
PC/-
PO, PA
Connect the power
cables to RL1, S/L2,
and T/L3.
R/L1
S/L2
No-fuse
breaker
High-attenuation
Magnetic
Input AC
radio noise
reactor
reduction filter
contactor
Simplified
radio noise
filter
Grounding terminal for inverter casing
200V class:
0.4~45kW
Three-phase 200~240V-50/60Hz
55kW, 75kW Three-phase 200~220V-50Hz
Three-phase 200~240V-60Hz
400V class:
0.75~75kW Three-phase 380~480V-50/60Hz
90~160kW
Three-phase 380~440V-50Hz
Three-phase 380~480V-60Hz
Connect to a (3-phase induction) motor.
Connect a braking resistor. (For the optional dynamic braking unit, connect it between PA and PC.)
Change the parameters  ,  and  if necessary.
200kW models and smaller are not equipped with terminal PB. If your are using such a model and
you wish to use a braking resistor, you will need to purchase a braking unit separately.
This is a negative potential terminal in the internal DC main circuit. DC common power can be input
across the PA terminals (positive potential).
Terminals for connecting a DC reactor (DCL: optional external device). Shorted by a short bar when
shipped from the factory. Before installing DCL, remove the short bar.
 VF-AS1 
Connect the motor
interconnect cables to
U/T1, V/T2 and W/T3.
T/L3
U/T1 V/T2 W/T3
Inverter
U/T3
R/L1
S/L2
V/T2
W/T1
T/L3
PA/+ PB
PA/+ P0
DC reactor
Braking resistor [Note]
Terminal function
B-8
E6581301
Motor
E
Surge
suppressing filter
Motor
IM
Zero-phase
reactor

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