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Fanuc Alarm 5136 (FSSB: Error).

Fanuc Alarm 5136: FSSB Number of Amps is Small

Desrciption: The amount of servo amplifiers identified by the FSSB system is not correct; compared with the number of drives/channels connected across the FSSB.

Causes of Fanuc Alarm 5136:

  • Optical Cable
    • This includes all FSSB optical cables from the CNC to the servo amplifiers and newer systems/drives the spindle module; as well the optical cables running between drives via COP10A to COP10B, etc.
  • Servo Amplifier
    • If the servo amplifier in a chain develops a fault, then the 5136 alarm can show if the drive control board is involved in the fault.
  • Axis Control Card.
    • Dependent on the type of i series control; it will either have an independent FSSB SMD card or the FSSB will be running direct from the motherboard or more simpler systems.

Fanuc Parts Specialist:

If your Fanuc control system displays a 5136 alarm with U and/or L alarms then we can help by assiting with diagnosis and the supply of parts or repair of servo drives, motors and control systems. Further we can build cables on order if required.

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