马达一按开机按钮，CU320就报F30001，过电流，我查了没有发现过载啊，是不是电机被卡住了，造成一开机就报警啊？这是F30001的信息Cause:
The power unit has detected an overcurrent condition.
– closed-loop control is incorrectly parameterized.
– motor has a short-circuit or fault to ground (frame).
– V/f operation: Up ramp set too low.
– V/f operation: Rated motor current is significantly greater than that of the Motor Module.
– infeed: High discharge and post-charging current for line supply voltage interruptions.
– infeed: High post-charging currents for overload when motoring and DC link voltage dip.
– infeed: Short-circuit currents at power-on due to the missing commutating reactor.
– power cables are not correctly connected.
– power cables exceed the maximum permissible length.
– power unit defective.
Additional causes for a parallel switching device (r0108.15 = 1):
– a power unit has tripped (powered down) due to a ground fault.
– the closed-loop circulating current control is either too slow or has been set too fast.
Fault value (r0949, interpret bitwise binary):
Bit 0: Phase U.
Bit 1: Phase V.
Bit 2: Phase W.
Note:
Fault = 0 means that the phase with overcurrent is not recognized (e.g. for Blocksize device).
Remedy:
– check the motor data – if required, carry out commissioning.
– check the motor circuit configuration (star-delta).
– V/f operation: Increase up ramp.
– V/f operation: Check the assignment of the rated currents of the motor and Motor Module.
– infeed: Check the line supply quality.
– infeed: Reduce the load when motoring.
– infeed: Correct connection of the line commutating reactor.
– check the power cable connections.
– check the power cables for short-circuit or ground fault.
– check the length of the power cables.
– replace power unit.
For a parallel switching device (r0108.15 = 1) the following additionally applies:
– check the ground fault monitoring thresholds (p0287).
– check the setting of the closed-loop circulating current control (p7036, p7037).
恳请大哥帮帮我，谢谢，希望详细说明一下！谢谢你们！
最佳答案
你可以尝试下述的解决方法——
1、检查电机参数是否设置正确；
2、增大变频器的斜坡上升/下降参数值；
3、检查电机的接线（星—三角）方式是否正确；
4、检查整流单元的供电电源是否正常；
5、检查整流单元进线电抗器的连接；
6、检查电机电缆接线情况；
7、检查动力电缆是否存在短路或接地故障；
8、检查动力电缆长度是否超过了限制值。
提问者对于答案的评价：
查了，这个问题偶尔犯一下!头疼啊!不过还要谢谢你
原创文章，作者：more0621，如若转载，请注明出处：https://www.zhaoplc.com/plc207394.html
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