BRIDGE RATING FAULT
Otis · DSD 412 DC Elevator Drive
¿Qué significa 921 ?
The system is unable to identify the drive's size. The bridge type, ampere rating, and current feedback scaling are determined by a sense resistor on the Cube ID PCB, which plugs into the A2 Armature Interface PCB. This fault occurs if the computer cannot identify this physical hardware. A DSD power down is required.
Causas comunes
- J14 on the Main Control PCB is not properly seated.
- The Cube ID PCB is either missing or an incorrect type for the drive.
- Incorrect PCU software version is loaded in U13 & U14.
- A faulty Armature Interface PCB (A2).
- A faulty Drive Control PCB.
Pasos de reparación & Lista de verificación
Haga clic en los pasos para seguir su progreso.
- 1
Ensure that connector J14 on the Main Control PCB is properly seated.
- 2
Verify that the correct Cube ID PCB is installed and present on the A2 Armature Interface PCB.
- 3
Check that the correct PCU software version is installed in U13 & U14.
- 4
If issues persist after checking connections and software, replace the Armature Interface PCB (A2) or the Drive Control PCB.
- 5
Perform a DSD power down.