5 limit switches, Limit switches, Appendix – Lenze 931E/K Small Drives Control User Manual

Page 181

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Appendix

Timing charts

Limit switches

10

l

181

SW−HB 13.0002−EN 4.1

10.5.5

Limit switches

t

1

t

2

t

4

t

t

t

t

3

931E_125

Fig. 35

Limit switch

0 Limit switch active

1 Actual speed (1)

2 Actual speed (2)

ƒ

t1 < 0.2 msec

ƒ

t2 = N x 0.2 msec
Depends on the quick stop ramp

ƒ

t3 < 0.2 msec

ƒ

t4 = N x 0.2 msec
Depends on the speed ramp

Actual speed(1): Direction of rotation permanently inhibited through the limit switch.

Actual speed (2): Direction of rotation not permanently inhibited through the limit switch.

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