Forced Dormant Error Detection (Test Stop) - Siemens SINAMICS S120 Function Manual

6.5

Forced dormant error detection (test stop)

To fulfill the requirements of standards DIN EN ISO 13849-1 and IEC 61508 regarding timely
error detection, the converter must regularly test its safety-relevant circuits to ensure that
they function correctly – this must be performed at least once every year. The converter
monitors the regular testing of its safety-related circuits, which monitor the speed of the
motor and which safely interrupt the torque-generating energy supply to the motor by means
of safe pulse suppression.
Figure 6-1
Table 6- 1
Extended/Advanced Functions
r9765 contains the remaining monitoring time.
The converter signals that the monitoring time
has come to an end with alarm A01697.
Setting the forced checking procedure (test stop)
If you only use the "Basic Functions", you must take the following steps during
commissioning:
1. Set monitoring time p9659 to a value to match your application.
2. Evaluate the warning A01699 in your higher-level control, e.g. r9773.31 with a digital
output or a bit in the status word of the field bus.
The circuits of "Basic Functions" are part of the circuits of "Extended/Advanced Functions". If
you use the "Extended/Advanced Functions", you must take the following steps during
commissioning:
1. Set monitoring time p9559 to a value to match your application.
2. Set the monitoring time p9659 to the maximum value.
3. Evaluate alarm A01697 in your higher-level controller, for example by interconnecting the
output of the time monitoring (r9723.0) with a digital output or a bit in the status word of
the fieldbus.
Safety Integrated
Function Manual, 12/2018, 6SL3097-5AR00-0BP1
Monitoring the regular forced checking procedure (test stop) in the converter
Monitoring the forced checking procedure (test stop)
6.5 Forced dormant error detection (test stop)
Basic Functions
r9660 contains the remaining monitoring time.
The converter signals that the monitoring time
has come to an end with alarm A01699.
Commissioning
271