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<Zero speed control and servo lock timing charts>
1)Zero speed control or servo lock is made valid when the auxiliary exciting terminal (LX) is ON without the start signal (STF, STR) being entered into the inverter (during a stop). Assign the function of the auxiliary exciting
terminal (LX) to any of the terminals using Pr. 180 to Pr. 186.
LX |
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STF(STR) |
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| OFF |
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| DC dynamic brake | |
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Output frequency |
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Zero speed control |
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or servo lock |
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2) Zero speed control or servo lock is made valid when the frequency command is 0Hz (not more than the starting frequency) with the start signal being entered.
LX |
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STF(STR) |
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Output frequency |
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Zero speed control |
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or servo lock |
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DC dynamic brake operation time
If a start is made during zero speed control or servo lock, online auto tuning is not activated.
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