FSSB Communication Error

What does OPEN mean?

The OPEN (Green) LED indicates normal communication between the servo amplifier and the main board via FSSB. This fault occurs if the LED does not light, indicating a loss or abnormality in this critical communication link. This could be due to a faulty optical cable, servo card, or the servo amplifier itself.

• Fiber Optic Sensor System (FSSB) communication failure between controller and servo drives.
• Damaged fiber optic cable or connectors in the FSSB loop.
• Faulty servo drive or controller interface card in the FSSB.
• Interference affecting fiber optic signal transmission.
• Incorrect FSSB addressing or configuration.

Click steps to track your progress.

1. 1

   Check the connection of the FSSB optical cable.

2. 2

   Replace the servo card.

3. 3

   Replace the servo amplifier.