
11.TROUBLESHOOTING B-63945EN/02
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11.21 ALARM SV5136 (FSSB: NUMBER OF AMPS IS SMALL)
Causes and Countermeasures
The number of servo amplifiers recognized by the FSSB is insufficient,
compared with the number of controlled axes.
- FSSB setting screen
If this alarm is issued, display the amplifier setting screen from the
FSSB setting screen. Only the servo amplifiers recognized on the
FSSB are displayed.
- Optical cable or servo amplifier
The optical cable that connects together the last recognized amplifier
and the next one may be defective.
Or, either of the amplifiers connected together with that optical cable
may be defective. Check the power supplies of the amplifiers.
- Power fault of a servo amplifier
This alarm may be issued if a power fault occurs in a servo amplifier.
A power fault occurs if the amplifier control power supply voltage
drops, if the +5 V conductor of the Pulsecoder cable is ground, or for
other reasons.
- Axis control cards
The axis control cards installed on the CNC may be defective.