Riken Keiki GD-3EC, Technical Manual

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9. Troubleshooting 9-1 Product abnormalities
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9
Troubleshooting
This troubleshooting section does not address causes of all problems that may occur with the product. It
provides brief explanations to assist in determining the causes of common problems.
If you encounter symptoms not addressed here or if problems persist even after taking corrective action, contact
Riken Keiki.
9-1 Product abnormalities
Symptom/display
FAULT
lamp
Cause Action
The power cannot
be turned on.
―
The wires are incorrectly
connected. Wire correctly.
The wires are detached
from the terminal plate. Connect correctly.
Abnormalities or
instantaneous
interruptions in the power
supply circuit Check to confirm that the rated voltage is
supplied.
Consider use of an uninterruptible power system,
power supply line filter, or insulated transformer,
and add such devices where appropriate.
Cable abnormality
(Disconnection, cable not
connected, short circuit) Check the wiring for the product and peripheral
devices.
Fuse blown Replacement required. Contact Riken Keiki.
Internal circuit abnormality Replacement required. Contact Riken Keiki.
Abnormal
operation
―
Disturbances due to
sudden noise, etc. Turn off the power and restart. If similar
symptoms recur frequently, take appropriate
measures to address the noise source.
If the problem persists even with noise prevention
measures, contact Riken Keiki.
Sensor
abnormality
(E-1)
(lit)
The sensor is not
connected or connected
improperly. Turn off the power and check the sensor
connection.
A sensor fault has
occurred.
Replace with a new sensor.
Effects of sudden surge
noise Turn off the power and restart. If similar
symptoms recur frequently, take appropriate
measures to address the noise source.
If the problem persists even with noise prevention
measures, contact Riken Keiki.
The main unit (SD-3/
SD-3SC) or remote sensor
head (GD-3) internal wiring
is connected incorrectly. Connect internal wiring of the main unit (SD-3/
SD-3SC) or remote sensor head (GD-3) correctly.