B–63525EN/02
11.TROUBLESHOOTING
791
The number of servo amplifiers recognized by the FSSB is insufficient,
compared with the number of controlled axes.
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.
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.
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 pulse coder cable is ground, or for other
reasons.
The axis control cards installed on the CNC may be defective.
11.25
ALARM 5136
(FSSB: NUMBER OF
AMPS IS SMALL)
Causes and actions
D FSSB setting screen
D Optical cable or servo
amplifier
D Power fault of a servo
amplifier
D Axis control cards