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  • No : 22033
  • Release Date : 2018/08/22 16:30
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Impossible to recover after power failure

I used the inverter with automatic restart after instantaneous power failure enabled (terminals STF and CS-SD were short-circuited and Pr.57 was set to "0"). The other day, instantaneous power failures occurred (three times) due to thunderbolts and the inverter that had been operating did not restart.
I tried reset (short-circuiting terminals using the external switch) several times but the inverter did not recover. Then, the inverter somehow recovered by turning off and then on the power supply on the input side several times. (Of course, the faults history is not saved.)
What is the possible cause why automatic restart after instantaneous power failure was not performed?
Category : 

Answer

First, ensure that the parameter for automatic restart after instantaneous power failure is set correctly and then do the following:
1. Check if the terminals STF and SD, and CS and SD for automatic restart after instantaneous power failure are connected correctly.
2. If the connection is correct, contact faults or break are probable. Check for them.
Product Name
Inverter, magnet motor drive
Product Category
Inverter
Series
FR-A500

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