Emerson Unidrive M702 - Open-Loop Brake Sequence

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Unidrive M702 User Guide 197
Issue Number: 3
Figure 11-27 Open-loop brake sequence
12
3
465
Pr Output Frequency
05.001
Pr Reference On 01.011
Pr Brake Control:
Brake Release
12.040
Pr Ramp Hold 02.003
Pr Drive Active 10.002
Pr Current Magnitude 04.001
1. Wait for upper current threshold and brake release frequency
2. Pre-brake release delay
3. Post-brake release delay
4. Wait for brake apply frequency
5. Wait for zero frequency
6. 1s delay as phase 2 of stopping sequence (Pr =1,2 or 3)
06.001
Pr Brake Control:
Brake Release Frequency
12.044
Pr Brake Control:
Brake Apply Frequency
12.045
Pr 12.046 Pr 12.047
Pr Brake Control:
Upper Current Threshold
12.042