Safety functions
Test procedure
Approved
☑
Safely Limited Speed (SLS) with ramp
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.
-
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 speed ramps down according to the chosen ramp time/
slope to Safely Limited Speed set point.
7. Deselect Safely Limited Speed.
8. Safe Func. Pending is displayed.
9. Run the frequency converter.
-
The motor speed must be higher than the Safely Limited
Speed selected, if the machine allows this
10. Ensure that the correct frequency converter is running.
11. Select Safely Limited Speed while the frequency converter is
running.
12. Check the following
-
The frequency converter ramps down to the Safe Limited
Speed.
13. Deselect Safely Limited Speed.
14. Check the following
-
No safety faults.
-
Safe Func. Pending is displayed.
15. Reset the frequency converter and check that the motor runs
normally.
16. Ensure that the Safely Limited Speed function is ready to operate.
17. Document and sign the commissioning test report.
Table 7.8 Commissioning Test Report, Safely Limited Speed with Ramp
Tester/Approver
Date:
Signature:
Service and Repair
Operating Instructions
58
Danfoss A/S © Rev. 2014-02-11 All rights reserved.
MG34W302
7
7
Summary of Contents for VLT Safety Option MCB 150
Page 2: ......