Hitachi WJ Series User Manual page 68

Chapter 5
■ Cautions for ground terminal for inverter
● Risk of electric shock!
Electric
shock
Do
Malfunction
Prohibited
Other cautions
!
 For details on compliance with CE and UL standards, refer to "1.3 Compliance to European
Directive (CE)" and "1.4 Compliance to UL Standards".
 If exports to the U.S. or Canada, or compliance with UL,cUL standards is required, the wires and
circuit breakers specified in the UL,cUL standards must be used. When connecting wires to the
main circuit terminal block, use round crimping terminals (UL-certified item) suitable for the
wires for use. Use a crimp tool recommended by the manufacturer of the crimping terminal to
crimp the terminal.
 Screw size may differ depending on the terminal. For the screw sizes of the main circuit terminal
and the ground terminal, refer to "5.2.3 Arrangement of Main Circuit Terminal Block".
 For the wiring to the inverter and the tightening torque of the crimp terminal and terminal
screw, refer to the table in "5.3.2 Recommended Wire Diameter, Wiring Equipment, Crimp
Terminal".
 In case of replacing from WJ200 series, if the wire diameter, etc., differs, please contact your
supplier or local Hitachi sales office.
 Be sure to ground the inverter and motor for use in accordance with the
applicable local grounding standards.
 Use grounding wires whose thickness is not less then that of the applicable
wires and make them short as much as possible.
● Risk of malfunction of the inverter and peripheral control devices!
 When more than one inverter are used, connect them that the grounding route
(condition) should not be cascaded or loops connection.
Inverter
Inverter
Inverter
Inverter
Inverter
Inverter
5-2-5
Wire Connection
Grounding bolt
prepared by the
customer