Product Description
The GE Terminal Board Relay Card 531X111PSHAKG1 supplies the 5 V dc, 15 V dc, and 24 V dc current used by the drive. It also features the pulse transformer for the motor field circuitry. When you replace the GE Terminal Board Relay Card 531X111PSHAKG1, the procedure might include the additional replacement of the 3TB potted MOV assembly. There are several considerations you must be aware of before you begin the replacement.
The 3TB contains multiple ribbon cables that you must disconnect from the original 3TB. The ribbon cables are prone to breakage due to the fine wires that comprise the ribbon cables. And pulling the ribbon cable out of the connector by holding the ribbon cable can lead to damaging the cable and disconnecting the fine wires. The best practice for removing the ribbon cables is to grasp the connector on the ribbon cable with one hand. Grasp the connector on the 3TB with the other hand and pull the ribbon cable from the 3TB.
The next step is to remove the five mounting screws that secure the 3TB. Have a screwdriver on hand to perform this operation.
Consider that you must drill holes in the 3TB mounting surface and this might lead to drill chips and other debris lodging in the 3TB or other components of the drive. Care must be taken that you inspect the drive and the 3TB assembly for loose debris. The debris might cause an electric shock or bind moving parts of the drive.
