Technical data 533
Example 1 - Response times
Note: The values shown above are applicable to ACS880 drives. The maximum response time
for DCS880 drives is 550 ms.
Example 2 - Response times for cascading
Note: The values shown above are applicable to ACS880 drives. The maximum response time
for DCS880 drives is 550 ms.
Time
STO request from
I/O or PROFIsafe
PROFIsafe
STO ack. (WCDT)
DO activation
Removal of
torque (Drive)
35 ms
54 ms
100 ms
0 ms
100 ms
35
54
Time
STO request from
I/O or PROFIsafe
(Drive 1)
DO activation for
cascading
Removal of
torque (Drive 1)
35 ms
STO request
through cascading
(Drive 2)
DO activation for
cascading
(Drive 2)
Removal of
torque (Drive 2)
STO request from
through cascading
(Drive 3)
DO activation for
cascading
(Drive 3)
Removal of
torque (Drive 3)
35 100 170 ms 0 ms
13570
70 ms
135 ms
105 ms
100 ms
170 ms
70 ms
Up to six drives