RKI Instruments RM-5000 Series Indicator/Alarm Unit - Manual (Page 75)

9 Troubleshooting 8-3. Disposal of products
- 75 - RM-5000
<Abnormalities on Unit>
Symptom/Display FAULT Causes Actions
The power cannot be turned
on. – The power switch is turned
off. Turn ON the power switch.
Fuse open-circuit Find out why the fuse has blown and take appropriate actions
before replacing it.
Incorrect connection of
power cable Check the terminal plate and correct the incorrect wiring.
Abnormalities/momentary
blackout of power supply
system Provide the rated voltage.
Take measures such as checking or adding the UPS, power
supply line filter and insulation transformer.
Cable abnormalities
(open circuit/not
connected/short circuit)
Check the wiring of indicator/alarm unit and related devices
around it.
Abnormal operations { Disturbances by sudden
surge noise, etc. Turn off and restart the indicator/alarm unit.
If such a symptom is observed frequently, take appropriate
measures to eliminate the noise.
Calibration gas
concentration Use the proper calibration gas. Span adjustment impossible {
Sensor sensitivity
deterioration Replace the sensor.
Detector head abnormalities
E-1
DETECTOR
z Fault on the detector head
(fault, 4 - 20 mA
open-circuit, and low flow
rate) Recover from the fault on the detector head.
(EC-5002, OX-5002,
RM-5002, RM-5003 only) Cable open-circuit between
the indicator/alarm unit and
the detector head Restore the cable connection between the indicator/alarm unit
and the detector head.
Sensor abnormalities
E-1A
SENSOR
z Amplifier PCB connection
abnormalities Check the harness between the amplifier PCB and the main
PCB for connections.
(GP-5001, NC-5001,
GH-5001, OX-5001 only) Sensor open-circuit and
short-circuit in the detector
head Connect the cable between the indicator/alarm unit and the
detector head (sensor) properly or replace the sensor.
Abnormalities in current
supply to the sensor Readjust the heater current.
Abnormalities in voltage
supply to the sensor Readjust the load voltage.
Zero follower abnormalities Perform the zero adjustment.
Flow rate abnormalities
E-5d
(EC-5002, OX-5002,
RM-5002, RM-5003 only)
z Flow loss on the detector
head Recover from the flow rate abnormality on the detector head.
For more information, see the operating manual of the
detector head.
Communication
abnormalities
E-6
(Only on a model with
RS-485 (option) mounted)
z Abnormalities in
communications with the
upper unit Please contact RIKEN KEIKI.
System abnormalities
E-9
z Clock abnormalities Please contact RIKEN KEIKI.
System abnormalities
E-9
z Abnormalities of ROM,
RAM, or EEPROM on the
main PCB Please contact RIKEN KEIKI.
SYSTEM Power voltage abnormalities
on the main PCB Please contact RIKEN KEIKI.
System abnormalities
E-9A
z Abnormalities of ROM or
RAM on the amplifier PCB Please contact RIKEN KEIKI.
SYSTEM Reference voltage
abnormalities on the
amplifier PCB
Please contact RIKEN KEIKI.
z : Lamp on
{ : Lamp off