10.07.2015 Views

Series 16/18/160/180-Model C Maintenance Manual, GFZ-62755EN ...

Series 16/18/160/180-Model C Maintenance Manual, GFZ-62755EN ...

Series 16/18/160/180-Model C Maintenance Manual, GFZ-62755EN ...

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8. TROUBLESHOOTING B–<strong>62755EN</strong>/01 #3(HVA):Over voltagealarm (Servo amp.LED[1] lights)DC voltage in servo amp. is excessive.Confirm status whenan alarm is generatedDoes the alarmgenerate duringdeceleration ?NOYESConfirm input voltageof servo amplifierPower should be within200/220/230VAC among3 phases of terminalT1(2),(3) and (4)Is voltagenormal ?NOYESInput power voltageis abnormalCheck feed rateServo amp. is faultyDoes the alarmgenerate duringrapid traverse?NOServo amp. is faultyYES· Is acc/dec time is correct ?· Isn’t load inertial too large ?· Is friction reduced by aging ofmachine ?Set acc./dcc. timeconstant lager as atemporary measureRefer to acc./dec. parameters<strong>16</strong>00 and so on.356

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