Toshiba TOSVERT VF-AS1 Instruction Manual page 39

[Standard connection diagram - sink]
The figure below shows an example of typical wiring in the main circuit of a 400V 200-280kW inverter.
Main circuit power source
400V class:
Three-phase 380~440V-50Hz
Three-phase 380~480V-60Hz
400/200V transformer
*8
(400V class only)
Control power supply
(Option)
b-contact of
overload relay
*1: Be sure to connect the DC reactor.
*2: To supply a DC power, connect the cables to the PA/+ and PA/- terminals.
*3: If you want to use a DC power supply to operate the inverter, be sure to contact your supplier customer support
center, because an inrush current limiting circuit is required in such a case.
*4: Braking unit (option)
*5: External braking resistor (option)
*6: Refer to Section 2.3.2 for switch functions.
*7: The functions assigned to terminals OUT1, VI/VII and RR/S4 can be switched by changing parameter settings. For
details refer to Section 2.3.2.
*8: To supply control power from an external power supply for backing up the control power supplied from the inverter,
an optional control power backup device (CSP003Z) is required. In such a case, the backup device is used at the
same time with the internal power supply of the inverter.
*2
*1
Surge
suppressor
From (a)
*7
(a)
Frequency
Ammeter
meter
Ammeter or voltmeter
B-5
*4
*3
(a)
*6
*7 *7
(a)
(a)
(a)
External potentiometer
(or voltage signal between RR and CCA:0~10V)
E6581301
*5
Motor
Forward run signal
Reverse run signal
Standby
Reset
Preset speed 1
Preset speed 2
Preset speed 3
Common
Voltage signal:-10~+10V
Voltage signal:0~10V
or current signal:4 (0)~20mA
2