Alpha 6000S series User Manual page 33

Chapter 2 Installation and Wiring
2.7 Wiring Attention
 Be sure the input power supply of the inverter is cut off then you can remove or replace the motor.
 Be sure the inverter has stopped output then you can switch the motor or the power supply.
 If a peripheral (brake unit, reactor, filter) is added, test the insulation resistance of the peripheral to earth first
and be sure the value not below 4 MΩ.

Besides shielding the input signal cable and the cable of frequency meter, the cables should be disposed
solely, not parallel with the main circuit cable, and far away from it as possible.
 In order to avoid error action caused by molestation, the control circuit cable should use stranding shielded
cables, and the wiring distance should be less than 50 meters.
 Be sure the shielded layers of shielded cables are not touching other signal cables or shell of equipment, you
can use insulating tape to enswathe bare shielding layer.
 The withstand voltage of all the cables should match with the voltage class of the inverter.
 In order to prevent accident, be sure that the control circuit terminal "PE" and the main circuit terminal "PE"
are connected to earth, and the earthing cable can't be shared with other equipment. The size of main circuit
earthing cable should be more than one and a half of the main circuit cable. After completion of wiring,
please check whether a cable, a bolt or a connection end. etc., was remained in the inverter, whether the bolts
were fastened firmly, whether the bare cable of terminals were shorted to other terminals.
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