Fanuc Power Mate i-D/H Maintenance Manual

APPENDIX
B63175EN/03
A. ALARM LIST
481
The details of servo alarm are displayed in the diagnosis display (No.200,
No.201, and No.204) as shown below.
#7
OVL200
#6
LV
#5
OVC
#4
HCA
#3
HVA
#2
DCA
#1
FBA
#0
OFA
OFA : An overflow alarm is being generated inside of digital servo.
FBA : A disconnection alarm is being generated.
(This bit causes servo alarm No.416.The details are indicated in
diagnostic data No. 201)
DCA : A regenerative discharge circuit alarm is being generated in servo amp.
Check LED.
HVA : An overvoltage alarm is being generated in servo amp.
Check LED.
HCA : An abnormal current alarm is being generated in servo amp.
Check LED.
OVC : A overcurrent alarm is being generated inside of digital servo.
LV : A low voltage alarm is being generated in servo amp.
Check LED.
OVL : An overload alarm is being generated.
(This bit causes servo alarm No. 400. The details are indicated in
diagnostic data No.201).
#7
ALD201
#6 #5 #4
EXP
#3 #2 #1 #0
When OVL equal 1 in diagnostic data No.200:
ALD 0 : Motor overheating
1 : Amplifier overheating
When FBA equal 1 in diagnostic data No.200:
ALD EXP Alarm details
1 0 Builtin pulse coder disconnection (hardware)
1 1 Separately installed pulse coder disconnection
(hardware)
0 0 Pulse coder is not connected due to software.
#7
204
#6
OFS
#5
MCC
#4
LDA
#3
PMS
#2 #1 #0
PMS : A feedback pulse error has occured because the feedback cable is
defective.
LDA : The LED indicates that serial pulse coder C is defective
MCC : A magnetic contactor contact in the servo amplifier has welded.
OFS : A current conversion error has occured in the digital servo.
D Details of servo
alarm

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