● The timer (p9652) after whose expiration STO is activated, is implemented with two
channels, although deceleration along the OFF3 ramp is only one channel.
● Effect on "Setpoint speed limit effective" (r9733[0...2]):
For SS1 (≙ STOP B), setpoint 0 is specified in r9733[0...2].
Requirement
● The Basic Functions are enabled via terminals and/or PROFIsafe:
– p9601 = 1, 8 or 9 (hex).
● In order that the drive can brake down to a standstill even when selected through one
channel, the time in p9652 must be shorter than the sum of the parameters for the crosswise
data comparison (p9650 and p9658). Otherwise the drive will coast down after the time
p9650 + p9658 has elapsed.
Status of Safe Stop 1
You can check the status in the SI diagnostics screens via "MENU SELECT > Diagnostics >
Menu forward key > Safety".
4.2.1.2 SS1 with external stop (SS1E)
In drive line-ups (e.g. drives that are mechanically connected via the material), the drive-
independent braking on the respective OFF3 ramp can cause problems. If the SS1E function
is used, the safe delay time (p9652) is started when the function is selected, but no OFF3 is
triggered. The higher-level controller still enters the setpoint.
Note
The function is configurable - however, the braking behavior using SS1E is not supported by
the NC (path stop).
WARNING
Axis motion that is not monitored
During the unmonitored delay time, for "Safe Stop 1 (time-controlled) with external stop", axis
motion is possible that is not monitored. This motion can result in death or severe injury.
● If there is a hazard due to undesirable motion in your application, take measures to counter
it, for example, by using a brake with safe monitoring. For additional information, see
Chapter "SBC (Basic/Extended) (Page 109)".
Safety functions integrated in the drive
4.2 SS1 Basic:
Safety Integrated (with SINAMICS S120)
96 Commissioning Manual, 02/2020, A5E46305916B AB
To Next Page
Loading...
Need help?
General
