4mA~20mA, 2-line type sensor and controller power are used.
Check whether the wiring between sensor and controller is correctly connected.
Figure 64 Pressure sensor
4~20mA current input sensor problem
occurred (pressure sensor)
Check if the setting value is properly set in
sensor setting menu at 20mA.
Is the setting correct?
Measure current of the circuit.
(Refer to Figure 1)
Is the current value proportional to the
measurement value?
Measure the current of the sensor
(Refer to Figure 2)
Is the current of the
sensor normal?
Check whether the wiring between sensor
and controller is correctly connected.
Sensor problem
- Check the auxiliary power
- If the auxiliary power is
normal, replace the sensor.
Master board / slave board /
display board problem
Is the wiring correctly
connected?
Wiring defect
Set the setting
value again.
N
Y
Y
Y
N
N
N
8. TROUBLESHOOTING
110
ENGLISH
Summary of Contents for LCWW
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