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Related Information

Abnormal speed decrease band

Function
When operating without the PG feedback ([Pt: V/f Pattern] = "0" - "9"), if the rough speed exceeds the speed limit over the setting time, this parameter announces an error and outputs a failure.
When operating with the PG feedback ([Pt: V/f Pattern] = "10" or "11"), the parameter monitors the speed feedback value and a trip occurs when speed exceeds the speed limit over the setting time.
When output frequency ] ([FH] +12 Hz) or ] ([FH] + [vL]/10) at all [Pt], a trip occurs. The trip display is "E-13".

Guideline for the setting
If speed feedback (Estimated speed) ] (Output frequency + [F623]) or speed feedback (Estimated speed) [ (Output frequency - [F624]), and a certain period of time set with [F622: Abnormal speed detection time], a trip occurs.
You can provide range for a detection level of a trip with a setting of [F623: Abnormal speed increase band] and [F624: Abnormal speed decrease band] During torque control, if speed feedback (Estimated speed) ] (Speed upper limit + [F623]) or ] (Speed lower limit - [F624]) a certain period of time set with [F622: Abnormal speed detection time], "E-13" trip occurs.

Memo
When the setting value is 0 (zero), this function may not become activated properly while in the stall protection mode. To maintain this function, use of setting [F451: Acc/Dec operation after stall operation] = "1: Minimum time" is recommended.

Please reference latest AS3 Instruction Manual more details or latest information.

AS3 fault codes, descriptions, symptoms and suggested remedies can be found in the below links. Each fault code can also be linked to directly from the AS3 by accessing the QR code on a mobile device while the AS3 is currently experiencing the fault.

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