Fanuc Power Mate i-D/H Maintenance Manual

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1.2.5 Maintenance of a Detector
CAUTION
Detectors such as Pulsecoders are precision equipment. When handling a detector, avoid applying shock to
it. Also, exercise care to prevent cutting powder, dust, cutting fluid, or other foreign matter from attaching to
it.
Make sure that all connectors are connected properly and securely. A connection failure can cause an alarm
or some other problem.
If the detector and/or connectors are not installed securely, cutting fluid may enter the inside of the detector,
making it necessary to replace the detector. In that case, contact the machine tool builder or FANUC.
NOTE
If you use a detector not manufactured by FANUC, contact the machine tool builder or detector
manufacturer for detailed information on the detector.
1.2.5.1 Alarms for built-in detectors (αi and βi Pulsecoders) and
troubleshooting actions
These alarms concern built-in detectors that are connected directly to the control unit (CNC/servo amplifier).
Based on the alarm number and description, take an appropriate action as described in the following subsection, "Detailed
troubleshooting methods".
Alarm No.: Alarm Description Possible cause Action
Detailed
troubleshooting
method
361: ABNORMAL PHASE
DATA(INT)
- Communication
error in the
Pulsecoder
- ID data error
- Pulse coder failure
- Noise
Replace the
Pulsecoder.
(3)
(4)
364: SOFT PHASE
ALARM(INT)
Position data alarm
- Noise
- Entry of cutting fluid
Check the effect
of noise.
Replace the
Pulsecoder.
(1)
(3)
365: BROKEN LED(INT) LED disconnection - Pulse coder failure
Replace the
Pulsecoder.
(3)
366: PULSE MISS(INT)
Small internal signal
amplitude
- Pulse coder failure
- Noise
Replace the
Pulsecoder.
(3)
(4)
367: COUNT MISS(INT)
Position data count
error
- Pulse coder failure
- Noise
Replace the
Pulsecoder.
(3)
(4)
368: SERIAL DATA
ERROR(INT)
Communication
interruption
- Cable disconnection
- Pulse coder failure
- Noise
Check the cable.
Replace the
Pulsecoder.
(2)
(3)
(4)
369: DATA TRANS.
ERROR(INT)
Communication
data alarm
- Noise
Check the effect
of noise.
(1)
453: SPC SOFT
DISCONNECT ALARM
Position - pole data
error
- Pulse coder failure
- Entry of cutting fluid
Replace the
Pulsecoder.
(3)
1.2.5.2 Alarms for separate detectors and troubleshooting actions
These alarms concern separate detectors that are connected to the control unit via a separate detector interface unit (SDU).
Based on the alarm number and description, take an appropriate action as described in the following subsection, "Detailed
troubleshooting methods".

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