Danfoss VLT MCB 150 Operating Instructions Manual page 59

Service and Repair
Safety functions
Safely Limited Speed (SLS) without ramp
Table 7.7 Commissioning Test Report, Safely Limited Speed without Ramp
MG34W302
Operating Instructions
Test procedure
1. Safely Limited Speed function must be disabled
- via DI1.
- via DI2.
Check the Safely Limited Speed circuit connections against the circuit
diagram.
2. No safety faults and alarms.
3. Run the frequency converter.
- Up and down ramps can be separately entered for JOG
operation (JOG-Mode). This can be parameterised as part of
the Quick Menu.
- The motor speed must be higher than the Safely Limited
Speed selected, if the machine allows this
4. Ensure that the correct frequency converter is running.
5. Select Safely Limited Speed while the frequency converter is
running.
6. Check the following
- The frequency converter coasts to zero speed if Safe Torque
Off is selected as fault reaction.
- Run Safe Stop 1 if that is selected as fault reaction.
- The motor is braked and stopped by the mechanical brake
(if available and configured).
- Ensure that Error 70 is displayed.
7. Deselect Safely Limited Speed.
8. Check the following
- Safety Func. Pending is displayed.
- Safely Limited Speed deselected and inactive.
9. Restart the frequency converter and check that the motor runs
normally.
10. Ensure that the Safely Limited Speed function is ready to operate.
- Run motor below SLS limit
- Activate SLS
- Increase reference above SLS limit
- Make sure that SLS limit will not be exceeded
11. Document and sign the commissioning test report.
Danfoss A/S © Rev. 2014-02-11 All rights reserved.
Approved ☑
7 7
57