PG Hardware Fault (detected when using a PG-X3 option card)

What does PGoH mean?

A hardware fault related to the PG has been detected, specifically indicating a disconnected PG cable when using a PG-X3 option card. This means the drive is not receiving the necessary encoder feedback signals due to a physical connection issue.

• PG cable is completely disconnected, severely damaged, or has multiple broken conductors, preventing any signal transmission to the PG-X3 option card.
• PG-X3 option card is not securely seated in its designated slot within the drive, leading to poor electrical contact.
• Internal hardware fault of the PG-X3 option card itself (e.g., component failure, firmware corruption) preventing it from processing encoder signals.
• Incorrect wiring of encoder signals to the PG-X3 card terminals (e.g., swapped differential pairs, incorrect voltage levels).
• External electromagnetic interference (EMI) or radio-frequency interference (RFI) corrupting the PG signals at the card's input.

Click steps to track your progress.

1. 1

   Power off the drive, then inspect and firmly reseat the PG-X3 option card into its designated slot on the drive's control board.

2. 2

   Thoroughly check all PG cable connections to the PG-X3 card terminals (e.g., A+, A-, B+, B-, Z+, Z-, 5V, 0V) and to the encoder itself for secure contact and correct polarity.

3. 3

   Measure the voltage supply from the PG-X3 card (e.g., 5VDC or 12VDC) at the encoder connector to ensure sufficient power delivery to the encoder.

4. 4

   If a known good spare PG-X3 option card is available, replace the existing card and retest the drive operation.

5. 5

   Verify proper shielding and grounding of the PG cable to the PG-X3 card and ensure it is routed away from high-current power cables to minimize noise.