
FANUC SERVO AMPLIFIER βi series I/O Link Option
Modification from I/O Link β
EDIT
DRAW. NO. CUST
TITLE
DESCRIPTION
DESIG.
DATE
A-79487E
20
23
01
04.03.15
SHEET
Newly designed
No. LED display
Description
Countermeasure
−
An error was detected in the
control circuit.
Replace the servo amplifier unit.
−
A alarm for the servo amplifier
unit is issued. (General illegal
instruction)
Replace the servo amplifier unit.
−
A alarm for the servo amplifier
unit is issued. (Slot illegal
instruction)
Replace the servo amplifier unit.
−
A alarm for the servo amplifier
unit is issued. (CPU address
error)
Replace the servo amplifier unit.
−
A alarm for the servo amplifier
unit is issued. (DTC address
error)
Replace the servo amplifier unit.
−
Stuck overflow occurred.
Replace the servo amplifier unit.
−
Stuck underflow occurred.
Replace the servo amplifier unit.
I/O link alarm
No. LED display Description Countermeasure
−
A FANUC I/O Link error occurred.
Some unit connected to the line
was turned off.
Turn off the power to all units
connected to the line. Then, turn
on the slave devices, followed by
the master device.
No LED display
No. LED display Description Countermeasure
−
No indicators
lit
The control circuit is not operating
normally.
(1) Check the 24-VDC control
supply voltage. If the voltage is
low, increase the voltage to
an appropriate level.
(2) Check whether a fuse in the
servo amplifier unit has blown.
If a blown fuse is found,
replace it, following the
procedure described in Part 4
"Maintenance of Servo
Amplifier Unit."
If (1) and (2) are not the cause,
replace the servo amplifier.