APC ALARM: NEED REF RETURN

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This alarm indicates that the correspondence between the machine position and the absolute position detector (absolute Pulsecoder or rotary scale with distance-coded reference marks) has been lost. This condition sets bit 4 (APZ) of parameter No. 1815 to 0. A reference position return is required to re-establish the absolute position. The specific cause is further detailed in diagnostic data No. 310#0.

• Alarm from the APC system indicating a need for reference return.
• Encoder or sensor data lost, requiring re-homing.
• Axis position lost, necessitating recalibration.
• Home position signal not received.

Klikk på steg for å spore fremgangen.

1. 1

   Perform a reference position return for the affected axis.

2. 2

   Check diagnostic data No. 310#0 for a detailed cause code related to the APC alarm.

3. 3

   After successfully performing the reference return, verify that bit 4 (APZ) of parameter No. 1815 is automatically set back to 1.