Functions
5.12 Safety-related applications
Frequency inverter
210 Operating Instructions, 08.10. 2008, t.b.d.
No. Description Status
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. - frequency 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
Function check, "Safely Limited Speed" (SLS)
This check involves the following steps:
Table 5- 75 Function, "Safely Limited Speed" (SLS)
No. Description Status
1. Initial state
• The frequency inverter signals "ready for switching on" (P0010 = 0)
• No safety faults and alarms
• r9772.4 = r9772.5 = 0 (SLS deselected and inactive)
2. Switch on the motor. The motor speed must be higher than the parameterized
safely limited speed, if the machine permits this
3. Check whether the motor involved rotates
4. Select SLS while the ON command is being issued
5. Check the following points:
• r9772.4 = 1 (SLS selected)
• The motor response depends on the selected mode of the SLS function
– SLS mode 0
The drive speed decreases corresponding to the selected ramp time
and then the frequency inverter is subsequently passivated
– SLS mode 1
The motor speed decelerates corresponding to the selected ramp
time. The motor then rotates with the parameterized safely limited
speed
– SLS mode 2
The frequency inverter is immediately passivated, the motor coasts
down
– SLS mode 3
The frequency inverter is immediately passivated, the motor coasts
down
• r9772.5 = 1 (SLS active)
6. Deselect SLS
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