EF5
Ext Fault S5
Yaskawa · E7 Drive
What does EF5 mean?
An external fault condition exists connected to a multi-function digital input terminal S5. This implies an issue with an external device or wiring connected to this specific input, which could stop the drive or cause unintended behavior. This can also appear as a flashing alarm.
Source: Yaskawa E7 Drive
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