FANUC Series 16/18/160/180-Model C for Lathe Operator Manual

APPENDIX
G. ALARM LIST
B–62754EN/01
774
Num-
ber
RemedyDescriptionMeaning
AL–33 Insufficient DC link section
charging
Detects insufficient charging of direct current pow-
er supply voltage in power circuit section when
magnetic contactor in amplifier is turned on (such
as open phase and defective charging resistor).
Remove cause, then reset
alarm.
AL–34 Parameter data setting be-
yond allowable range of val-
ues
Detects parameter data set beyond allowable
range of values.
Set correct data.
AL–35 Excesive gear ratio data set-
ting
Detects gear ratio data set beyond allowable
range of values.
Set correct data.
AL–36 Error counter over flow Detects error counter overflow. Correct cause, then reset
alarm.
AL–37 Speed detector parameter
setting error
Detects incorrect setting of parameter for number
of speed detection pulses.
Set correct data.
AL–39 Alarm for indicating failure in
detecting 1–rotation signal for
Cs contouring control
Detects 1–rotation signal detection failure in Cs
contouring contorl.
Make 1–rotation signal ad-
justment.
Check cable shield status.
AL–40 Alarm for indicating 1–rotation
signal for Cs contouring con-
trol not detected
Detects that 1–rotation signal has not occurred in
Cs contouring control.
Make 1–rotation signal ad-
justment.
AL–41 Alarm for indicating failure in
detecting position coder
1–rotation signal.
Detects failure in detecting position coder 1–rota-
tion signal.
Make signal adjustment
for signal conversion cir-
cuit.
Check cable shield status.
AL–42 Alarm for indicating position
coder 1–rotation signal not
detected
Detects that position coder 1–rotation signal has
not issued.
Make 1–rotation signal ad-
justment for signal conver-
sion circuit.
AL–43 Alarm for indicating discon-
nection of position coder sig-
nal for differential speed
mode
Detects that main spindle position coder signal
used for differential speed mode is not connected
yet (or is disconnected).
Check that main spindle
position coder signal is
connected to connector
CN12.
AL–46 Alarm for indicating failure in
detecting position coder
1–rotation signal in thread
cutting operation.
Detects failure in detecting position coder 1–rota-
tion signals in thread cutting operation.
Make 1–rotation signal ad-
justment for signal conver-
sion circuit
Check cable shield status.
AL–47 Position coder signal ab-
normality
Detects incorrect position coder signal count op-
eration.
Make signal adjustment
for signal conversion cir-
cuit.
Check cable shield status.
AL–48 Position coder 1–rotation sig-
nal abnormality
Detects that occurrence of position coder 1–rota-
tion signal has stopped.
Make 1–rotation signal ad-
justment for signal conver-
sion circuit.
AL–49 The converted differential
speed is too high.
Detects that speed of other spindle converted to
speed of local spindle has exceeded allowable
limit in differential mode.
Check the position coder
state of the other side.
AL–50 Excessive speed command
calculation value in spindle
synchronization control
Detects that speed command calculation value
exceeded allowable range in spindle synchroniza-
tion control.
Check parameters such
as a position gain.
AL–51 Undervoltage at DC link sec-
tion
Detects that DC power supply voltage of power
circuit has dropped (due to momentary power fail-
ure or loose contact of magnetic contactor).
Remove cause, then reset
alarm.
AL–52 ITP signal abnormality I Detects abnormality in synchronization signal (ITP
signal )with CNC (such as loss of ITP signal).
Remove cause, then reset
alarm.

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