[Standard connection diagram - source logic]
The figure below shows an example of typical wiring in the main circuit VFAS1-6400KPC to 6630KPC inverter.
Main circuit power source
400~630kW
690V class :
Three-phase 500~690V-50/60Hz
b-contact of
overload relay
*1: AC reactor (PFL): Mandatory for VFAS1-6110KPC and above.
*2: Transformer for fan supply (TRS) ⇒Refer to section 1.4.4.
*3: ⇒ Refer to Section 2.3.2 for switch functions.
*4: The functions assigned to terminals OUT1, VI/II and RR/S4 can be switched by changing parameter settings.
⇒ For details refer to Section 2.3.2.
*5: 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 (CPS002Z) is required. In such a case, the backup device is used at the same time
with the internal power supply of the inverter.
To back up control power, set the parameter (Control power supply backup option failure monitoring) properly.
⇒ For more information, refer to 6.33.24.
*6: For PWR connection conforming to safety standards, refer to Section 9.3.
*7: If you use a braking unit (optional) and external braking resister (optional) in combination.
*8: TRS(Transformer for fan power supply) can not be used this system for VFAS1-6110KPC and above.
*2
TRS
X0
Transformer for
Fan power Supply
X2
*1
PFL
NOISE
Filter
NOISE
Filter
Transformer
down to 200V
Control power supply
backup (Option) *5
Surge
suppressor
From (a)
*4
(a)
Frequency
Ammeter
meter
Ammeter or voltmeter
B-9
*2
*7
*2
Rectifi
cation
circuit
Main
circuit
Rectifi
cation
circuit
Fan
Control
(a)
circuit
*6
*3
*4
*4
(a)
Voltage signal:-10~+10V
(a)
Voltage signal:0~10V
or current signal:4 (0)~20mA
(a)
External potentiometer
(or voltage signal between RR/S4 and CCA:0~10V)
E6581528
*7
Motor
Forward run signal
Reverse run signal
Reset
Preset speed 1
Preset speed 2
Preset speed 3
2