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

APPENDIX
G. ALARM LIST
B–62754EN/01
768
The details of servo alarm No. 414 are displayed in the diagnosis display
(No. 200 and No.204) as shown below.
#7 #6 #5 #4 #3 #2 #1 #0
OVL
LV
OVC HCA HVA DCA FBA OFA200
OVL: An overload alarm is being generated.
(This bit causes servo alarm No. 400. The details are indicated in
diagnostic data No.201).
LV : A low voltage alarm is being generated in servo amp.
Check LED.
OVC: A overcurrent alarm is being generated inside of digital servo.
HCA: An abnormal current alarm is being generated in servo amp.
Check LED.
HVA : An overvoltage alarm is being generated in servo amp.
Check LED.
DCA: A regenerative discharge circuit alarm is being generated in servo
amp.
Check LED.
FBA : A disconnection alarm is being generated.
(This bit causes servo alarm No.416.The details are indicated in
diagnostic data No. 201)
OFA : An overflow alarm is being generated inside of digital servo.
#7 #6 #5 #4 #3 #2 #1 #0
OFS
MCC LDA PMS204
OFS : A current conversion error has occurred in the digital servo.
MCC : A magnetic contactor contact in the servo amplifier has welded.
LDA : The LED indicates that serial pulse coder C is defective
PMS : A feedback pulse error has occurred because the feedback cable
is defective.
The details of servo alarms No. 400 and No. 416 are displayed in the
diagnosis display (No. 201) as shown below.
#7 #6 #5 #4 #3 #2 #1 #0
ALD EXP201
When OVL equal 1 in diagnostic data No.200 (servo alarm No. 400 is
being generated):
ALD 0 : Motor overheating
1 : Amplifier overheating
When FBAL equal 1 in diagnostic data No.200 (servo alarm No. 416 is
being generated):
ALD EXP Alarm details
1 0 Built–in pulse coder disconnection (hardware)
1 1 Separately installed pulse coder disconnection
(hardware)
0 0 Pulse coder is not connected due to software.
D Details of servo
alarm No.414
D Details of servo
alarms No. 400 and
No.416

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