SE-Power FS STO-manual vers. 1.6 en.12.08.2015
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4.4
Time behaviour
Functionally, the STO-A and STO-B inputs are identical. The switch sequence of
STO-A/STO-B is interchangeable across all diagrams.
4.4.1
Basic time behaviour STO
displays the basic time behaviour of the safety module. The time specifications can
. :
Figure 3:
Basic time behaviour when activating and deactivating the safety function STO
Time
Description
Value
T_STO-A/B_OFF STO-A/B
– Switching time from High to
Low
Section 9.1.4, Table 21
T_STO-A/B_ON STO-A/B
– Switching time from Low to
High
Section 9.1.4, Table 21
T_C1/C2_ON
C1/2
– Switching time closing
T_C1/C2_OFF
C1/2
– Switching time opening
T_DRIVE_V
Delay of the SE-Power FS
0 … 10ms
Table 4:
SE-Power FS Safety Module STO
STO-A
Status C1/C2
STO-B
Status LED
closed
open
on
off
1
0
SE-Power FS
Display
„Safety status”
(internal)
1
0
T_STO-A/B_OFF
T_C1/C2_ON
T_DRIVE_V
T_STO-A/B_OFF + 10 ms
STO – „Safe Torque Off” active
„H” – STO reached
dependent of the
operating status
STO
requested
STO reached
„Standard”
„Standard”
T_C1/C2_OFF
T_STO-A/B_ON
T_DRIVE_V
T_STO-A/B_ON + 10 ms
dependent of the
operating status
STO
requested