Siemens Sinamics S120 Function Manual page 449

Trace evaluation:
● SLS function with SLS level 2 is activated (see bits "SLS active", "active SLS level bit 0"
and "active SLS level bit 1")
● Drive is accelerated beyond the SLS limit (time axis from approx. -400 ms)
● Exceeding the limit is recognized (time axis 0 ms)
● Safety fault is initiated (time axis 0 ms; bit "internal event" is set to 0)
● Fault response STOP D (corresponds to selection SOS) is initiated (see bit "STOP D
active")
● The standstill position is only safely monitored (time axis 100 ms; see bit "SOS active")
after the transition time STOP D to SOS (p9553) has expired
● However, as the axis continues to rotate, the standstill tolerance window is violated (time
axis approx. 120 ms)
● STOP B is initiated (see bit "SS1 active")
● The drive is braked to a standstill
● Standstill is reached (time axis approx. 500 ms)
● STOP A (as follow-up response to STOP B) is activated (see bit "STO active"); at this
point the speed falls below the shutdown speed SS1 (p9560) (drops below the shutdown
speed SS1 before SS1 timer (p9556) has expired).
Not e
Time differences through internal c alculations
Small time differences (of the order of two to three safety cycles (here up to 36 ms)) are
caused by internal calculations and do not present a problem.
SLS with encoder with s top response "STOP E"
N o .
N o te:
The acceptance test must be carried out separately for each configured control and each SLS speed limit used.
Control can be realized without selection via TM54F, onboard terminals (CU310-2) or via PROFIsafe.
1. Initial state
Drive in the "Ready" state (p0010 = 0)
•
Safety Integrated Extended Functions enabled (p9601.2 = 1)
•
Safety functions enabled (p9501.0 = 1)
•
Safety configured with encoder (p9506 = 0 or p9506 = 2)
•
No Safety faults and alarms (r0945[0...7], r2122[0...7], r9747[0...7]) at the drive and
•
TM54F (if used); see note "Non-critical alarms" at the beginning of Section "Ac-
ceptance test."
Safety Integrated
Function Manual, (FHS), 07/2016, 6SL3097-4AR00-0BP6
D e scri p ti o n
A.3 Acceptance tests (recommendations)
Appendix
Sta tu s
449