Siemens SINAMICS G120 Operating Instructions Manual page 211

Function check, "Safe Stop 1" (SS1)
This check involves the following steps:
Table 5- 98
No.
1.
2.
3.
4.
5.
6.
7.
8.
CU240S and CU240E Control Units, FW 3.2
Operating Instructions, 03/2009, A5E02440075B AA
Function, "Safe Stop 1" (SS1)
Description
Initial state
The inverter signals "ready for switching on" (P0010 = 0)
•
No safety faults and alarms
•
r9772.0 = r9772.1 = 0 (STO deselected and inactive)
•
r9772.2 = r9772.3 = 0 (SS1 deselected and inactive)
•
Switch on the motor
Check whether the motor involved rotates
Select SS1 while the ON command is being issued
Check the following points:
The motor speed decelerates corresponding to the selected ramp time (if
•
required, use a stopwatch)
The motor coasts down to a standstill after the parameterized minimum
•
speed has been fallen below
The motor is braked and held by the mechanical brake if a brake is being
•
used
No safety fault
•
r9772.1 = 1 (STO active)
•
r9772.2 = 1 (SS1 selected)
•
r9772.14 = 1, if the monitoring function of the safety-relevant brake is
•
activated
Cancel SS1
Check the following points:
No safety fault
•
r9772.1 = 0 (STO inactive)
•
r9772.2 = 0 (SS1 deselected)
•
r9772.14 = 0
•
Check whether the motor involved rotates. If yes, check the following points:
The cabling between the Control Unit and Power Module is correct
•
Correct assignment, drive No. - inverter - Power Module - motor
•
The hardware can function correctly
•
Correct wiring of the shutdown paths
•
Correct STO terminal assignment at the Control Unit
•
Correct parameterization of the SS1 function
•
Functions
5.12 Safety functions
Status
211