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VLT® Midi Drive FC 280
3.
Verify that:
-
a.
The motor coasts. It may take a long time for the motor to stop.
-
b.
If the LCP is mounted, alarm 68, Safe Torque Off shows on the LCP. If the LCP is not mounted, alarm 68, Safe Torque
Off is logged in parameter 15-30 Alarm Log: Error Code.
4.
Reapply 24 V DC to terminals 37 and 38.
5.
Ensure that the motor remains in the coasted state, and the customer relay (if connected) remains activated.
6.
Send reset signal (via fieldbus, digital I/O, or [Reset]/[Off Reset] key on the LCP).
7.
Ensure that the motor becomes operational and runs within the original speed range.
The commissioning test is successfully completed when all the above-mentioned steps are passed.
1.11.4.2 Test for STO Applications in Automatic Restart Mode
For applications where parameter 5-19 Terminal 37/38 Safe Torque Off is set to [3] Safe Torque Off Warning, conduct the commission-
ing test as follows:
Procedure
1.
Remove the 24 V DC voltage supply to terminals 37 and 38 by the safety device while the drive drives the motor (that is, the
mains supply is not interrupted).
2.
Verify that:
-
a.
The motor coasts. It may take a long time for the motor to stop.
-
b.
If the LCP is mounted Warning 68, Safe Torque Off W68, shows on the LCP. If the LCP is not mounted, Warning 68,
Safe Torque Off W68 is logged in bit 30 of parameter 16-92 Warning Word.
3.
Reapply 24 V DC to terminals 37 and 38.
4.
Ensure that the motor becomes operational and runs within the original speed range.
The commissioning test is successfully completed when all the above-mentioned steps are passed.
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