LOOP CONTACTOR FAULT

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The Loop Contactor auxiliary contact failed to pick up or drop out within the designated time, as requested by the DSD 412 drive. The detection time is set by Function #102, which can be 450ms or 3 seconds.

• Defective Loop Contactor Auxiliary contact (check feedback at TB1-7).
• Defective Contactor (open coil or mechanical binding).
• Defective Pilot Relay LPR.
• Interference from other elevator relay contact circuits.
• Function #102 not set correctly for contactor type (e.g., small vs. large HP drives).

Klikk på steg for å spore fremgangen.

1. 1

   Check for proper feedback at TB1-7 for the Loop Contactor Aux contact.

2. 2

   Check the contactor for an open coil or mechanical binding.

3. 3

   Check the Pilot Relay LPR for defects.

4. 4

   Identify and resolve interference from other elevator relay contact circuits.

5. 5

   If using large contactors with large HP drives, set Function #102 to 1 (On) for a 3-second fault detection time; otherwise, set to 0 (Off) for 450ms.