Forced Dormant Error Detection (Test Stop) - Siemens SINAMICS G120 Function Manual

Description

2.11 Forced dormant error detection (test stop)

2.11 Forced dormant error detection (test stop)
Description
To fulfill the requirements of standards EN 954-1, ISO 13849-1 and IEC 61508 regarding
timely error detection, the inverter must regularly test its safety-relevant circuits to ensure
that they function correctly - this must be performed at least once every year.
The inverter monitors the regular test of its safety-relevant circuits, which monitor the speed
of the motor and which switch off the motor torque.
Figure 2-41
Table 2- 5
Extended Safety
r9765 contains the remaining monitoring time.
The inverter signals that the monitoring time has
come to an end with alarm A01697.
Setting forced dormant error detection
If you only use "Basic Safety", you must take the following steps during commissioning:
● Set monitoring time p9659 to a value to match your application.
● Evaluate alarm A01699 in your higher-level controller, by, for example, interconnecting
The "Basic-Safety circuits" are an integral part of the "Extended-Safety circuits". If you use
"Extended-Safety", you must take the following steps during commissioning:
● Set monitoring time p9559 to a value to match your application.
● Set the monitoring time p9659 to the maximum value.
● Evaluate alarm A01697 in your higher-level controller, for example by interconnecting the
72
Monitoring the regular forced dormant error detection in the inverter
Forced dormant error detection monitoring
r9773.31 with a digital output or a bit in the status word of the field bus.
output of the time monitoring (r9723.0) with a digital output or a bit in the status word of
the field bus.
Basic Safety
r9660 contains the remaining monitoring time.
The inverter signals that the monitoring time has
come to an end with alarm A01699.
Safety Integrated Function Manual, SINAMICS G120 and G120C
Function Manual, 01/2011, FW 4.4, A5E03052391B AB