Operating instructions

Functions
5.12 Safety functions
CU240S and CU240E Control Units, FW 3.2
Operating Instructions, 03/2009, A5E02440075B AA
211
Function check, "Safe Stop 1" (SS1)
This check involves the following steps:
Table 5- 98 Function, "Safe Stop 1" (SS1)
No. Description Status
1. 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)
2. Switch on the motor
3. Check whether the motor involved rotates
4. Select SS1 while the ON command is being issued
5. 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
6. Cancel SS1
7. Check the following points:
• No safety fault
• r9772.1 = 0 (STO inactive)
• r9772.2 = 0 (SS1 deselected)
• r9772.14 = 0
8. 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