Controllers
4.7 Sensors and external sensor interface module
ATD4xxW Door Controller for Industrial Applications
156
System Manual, 01/2017, A5E38080677-AB
4.7.3
Reaction times
The reaction time to an interrupted light array (ESPE) or a pressure-sensitive edge can be
determined by measuring the motor current reduction. To this end, the ESPE or pressure-
sensitive edge system can be activated (interrupted or triggered) during constant travel so
that the drive reverses.
The reaction times are independent of the sensor type (ESPE or pressure-sensitive edge).
The reaction time is 70 ms and the maximum reaction time is 80 ms.
4.7.4
Stopping distances
The table below shows the expected stopping distances depending on different braking
ramps and different starting speeds, taking into account a reaction time of 80 ms (ESPE
and/or pressure-sensitive edge; see Section Reaction times (Page 156)).
Table 4- 29 Expected stopping distances [mm] taking into account the ESPE running time (80 ms)
Initial speed
[mm/s]
Set braking ramp [mm/s
2
]
1400
1200
1000
800
600
400
300
56
62
69
80
99
137
350
72
79
89
105
130
181
400
89
99
112
132
165
232
450
108
120
137
163
205
289
500
129
144
165
196
248
353
550
152
170
195
233
296
422
600
177
198
228
273
348
498
650
203
228
263
316
404
580
700
231
260
301
362
464
669
750
261
294
341
412
529
763
Summary of Contents for SIDOOR ATD401W
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