Riken Keiki GP MED EX, Operating Manual

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9 Troubleshooting 9 Troubleshooting
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9
Troubleshooting
The troubleshooting does not explain the causes of all the malfunctions which occur on the detector. This
simply helps to find the causes of malfunctions which frequently occur. If the detector shows a symptom
which is not explained in this manual, or still has malfunctions even though remedial actions are taken,
please contact our overseas sales department or local representatives.
<Abnormalities on Unit>
Symptom/Display FAULT Causes Actions
The power
cannot be turned
on.
-
The wiring is not correct. Connect the wiring properly.
The terminal plate is
removed.
Connect the terminal plate properly.
Abnormalities/momentary
blackout of power supply
system
Provide the rated voltage.
Check the UPS, power supply line filter and
insulation transformer, and then take additional
measures.
Cable abnormalities
(open circuit/not
connected/short circuit)
Check the wiring of detector and related devices
around it.
Abnormal
operations
-
Disturbances by sudden
surge noise, etc.
Turn off and restart the detector.
If such a symptom is observed frequently, take
appropriate measures to eliminate the noise.
Sensor
abnormalities
E-1

The sensor is not
connected or improperly
connected.
Check if the sensor cable is securely fastened to
the terminal plate.
Zero drift caused by
environmental changes or
degradation over time is
off the threshold.
Perform the zero adjustment. If the symptom
persists after the zero adjustment, replace the
sensor with a new one.
Faults of the sensor Replace the sensor with a new one.
System
abnormalities
E-9

The rated voltage is not
supplied to the detector. Check the power supply, and supply the rated
voltage.
Abnormalities of ROM,
RAM, or EEPROM inside
of the detector
Please contact our overseas sales department
or local representatives.
Output signal (4-20mA)
does not work correctly.
Check if the cable for external output is correctly
connected. (Deterioration of the cable,
connection of the host system, etc).
If the output is not necessary, connect a
resistance to the terminal as mentioned in P16.
If it is correctly connected, contact our overseas
sales department or local agents because a
failure inside this detector might be occurred.