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4/17/2012 5:39 AM | |
Joined: 8/25/2006 Last visit: 2/6/2025 Posts: 2213 Rating:
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Hello. Did you read the chapter 7.5 of themanual, especially cautions of optimization runs (P051=25, page 171): Permanent-field motors (and motors with an extremely high residual flux) must be mechanically locked during this optimization run. In order to avoid rotation in the case of separately excited motors with a very high field circuit time constant, the motor field current must be zero before starting this optimization run. The value 1 (11, 21) must therefore be set at P082 instead of 3 (13, 23) for the duration of this optimization run. The standstill field P257 is to be set to 0.0 percent if P082 = 2 (12, 22). The set current limits are not effective during the current controller optimization run. 75% of the rated motor armature current flows for approximately 0.7s. Furthermore, individual current spikes of approximately 120% of the motor rated armature current are generated. |
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