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8.4.3 Terminal arrangement diagram and screw specifications
8.4.3.1 Main circuit terminals
The table below shows the main circuit terminal arrangements, screw sizes, and tightening torque. Note
that the terminal arrangements differ according to the inverter types. Two terminals designed for
grounding shown as the symbol,
in Figures A to D make no distinction between a power supply source
(a primary circuit) and a motor (a secondary circuit).
Table 8.1 Main Circuit Terminal Arrangements, Screw Sizes, and Tightening Torque
Power
supply
voltage
Applicable
motor
rating
(HP)
Inverter type Refer to
1/8 FRNF12C1
-2U
1/4 FRNF25C1
-2U
1/2 FRNF50C1
-2U
1 FRN001C1
-2U
Figure A
2 FRN002C1
-2U
3 FRN003C1
-2U
Three-
phase
230 V
5 FRN005C1
-2U
1/2 FRNF50C1
-4U
1 FRN001C1
-4U
2 FRN002C1
-4U
3 FRN003C1
-4U
Three-
phase
460 V
5 FRN005C1
-4U
Figure B
1/8 FRNF12C1
-7U
1/4 FRNF25C1
-7U
1/2 FRNF50C1
-7U
1 FRN001C1
-7U
Figure C
2 FRN002C1
-7U
Single-
phase
230 V
3 FRN003C1
-7U
Figure D
Notes 1) A box (
) in the above table replaces S or E depending on enclosure.
Screw size Tightening torque
M 3.5 9.7 lb-in (1.2 N·m)
M 4.0 14.6 lb-in (1.8 N·m)
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