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Appendix A Peripheral
Ground Fault Protection when motor is running.
If a "ground fault" occurs while motor is running, transient surge currents will destroy the power
section of inverter. Inverter offers an optional ZCT protection unit to detect the surge current and
disable the output section whenever ground fault occurs.
Installation:
1.
Disconnect inverter from power source
2.
Make sure that the charge lamp (LED 101) extinguishes or wait at least 10 minutes before
taking next step.
3.
Disconnect and thread output line (T1, T2 & T3) through ZCT and connect ZCT to CON4.
(as shown on diagram)
* Be sure to thread all T1, T2, & T3 through ZCT.
* Max. cross section of T1, T2, & T3 should be <= 10 AWG.
(Please refer to the specification of 3.2.2)
4.
Reconnect output lines (T1, T2, T3) back in proper sequence.
Note:
ZCT is standard on all CC 2110-2220 and CC 4110-4220.
Hazardous voltage within can cause serious injury or death. Operating drive from keypad may disable
safety circuits and result in danger or injury. Only qualified personnel should work on this equipment
after familiarization with its operation. Turn OFF and lock out power at main panel. Allow capacitors to
bleed off prior to servicing.
DANGER!
