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Appendix 2. Compliance to EC Directives
A2 - 3
(3) Power supply
[1] If a control power supply of the drive unit is 200V, use the power supply under an Overvoltage
Protection Category II as stipulated in IEC60664. In that case, insert a star-connection
isolation transformer that is compliant with EN or IEC Standard into the primary input power
supply of the drive unit.
[2] Do not omit the circuit breaker and electromagnetic contactor.
(4) Earthing
[1] To prevent electric shocks, always connect the servo/spindle drive unit protective earth (PE)
terminal (terminal with
mark) to the protective earth (PE) on the control panel.
[2] When connecting the earthing wire to the protective earth (PE) terminal, do not tighten the
wire terminals together. Always connect one wire to one terminal.
PE terminal
PE terminal
(5) Wiring
[1] Always use crimp terminals with insulation tubes so that the connected wire does not contact
the neighboring terminals.
Crimp terminal
Insulation tube
Wire
[2] Do not connect the wires directly.