7
CONNECTION DIAGRAM OF UNIT
For wiring of the external input terminals, refer to the Connection Diagram for Each Setting System.
Use a transformer to obtain a 200/220V of the control power when other value of the power supply voltage is
supplied for the main circuit. Align the polarities between the main and control circuits for wiring.
Power
supply
Control power supply
Major failure output
Minor failure output
R
T
S
W
E
U
V
THY3
THY1
THY2
CT1
CT2
CT3
F1
TF1
TF2
TF3
F3
F2
RA
SA
TA
I 2
V3
I 3
V1
D1
I 1
D2
1C
HA
HC
1A
RT
A T
H L
GT
ST
PH
PS
S
V E 3
V F 2
V L 2
VH 2
V E 1
D3
CN1
UF-RS485
UF-DN
UF-CL
UF-PR
CN2
CN3
CN5
V2
THS
FA
N
Snubber circuit
Snubber circuit
PCB5
Snubber circuit
Power supply , Gate circuit
Conversion
Board
Abnormality
indication
circuit
PCB3
Control circuits
External input and output
terminals
Conversion board
(option)
Display
panel
Communication
unit
Load
PCB2
PCB1
UF-TB
UF-DP
PCB4
PCB6
THY1-3
Thyristor
FAN
Cooling fan (forced air cooling only)
F1-3
Fuse
TF1-3
Fuse warning contact
CT1-3
Current transformer
PCB
Printed circuit board
CN
Connector
THS
Thermal switch
Summary of Contents for UF-3 Series
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