YOKOGAWA MX100 - Page 74

3-5
IM MX100-01E
Troubleshooting and Maintenance
3
2
1
4
5
Index
The measured value is not correct.
Probable Cause Corrective Action Ref. Page
The input wiring is not correct. Check the input wiring. 2-10 to 16
The measured value indicates +Over or Over. Change to an appropriate setting. *
The measurement range setting and input range do
not match.
The temperature error is large or is unstable. Change to the correct setting. *
The TC type setting and the type actually connected are different.
The temperature error is large or is unstable. Change to the correct setting. *
The RJC setting is not correct.
The temperature error is large or is unstable. Block the wind from hitting the terminals. -
The wind is hitting the terminals.
The temperature error is large or is unstable. Suppress changes in the ambient temperature -
The ambient temperature change is drastic. such as by placing the MX100 in a box.
The temperature error is large or is unstable. Match the thickness and length of the three wires. 2-10
There is an error in the wiring resistance
(in the case of an RTD).
The measurement error is large or is unstable. Take measures against noise effects. 2-22
The measurement error is large or is unstable. Reduce the signal source resistance such as by -
Effects from the signal source resistance. inserting a converter.
The temperature error is large or is unstable. Stop parallel connections. -
Effects from parallel connections. Do not use the burnout setting.
Measured values from the strain gauge type sensor When using a sensor without a remote sensing wire, -
are not correct. use the DV450-001 (conversion cable).
On the strain module (-B12, -B35), the gauge method Enter the correct settings. 2-11 to 2-13
and dip switch settings are not correct.
On the strain module (-B12, -B35), the gauge resistance Use a module that supports the resistance value 2-11 to 2-13
andinternalbridgeresistancevaluesaredifferent. ofthestraingauge(For120Ω,-B12,andfor
 350Ω,-B35).
On the strain module, scaling is not set Displayed with 1 gauge method conversion. 4-19
appropriately according to the gauge method. Set scaling appropriately according to the gauge.
(for 2 gauge, 4 gauge methods, the amount of strain
is doubled or quadrupled. )
On the strain module (-NDI), a strain gauge type sensor When using a sensor without a remote sensing wire, -
without a remote sensing wire is being used. use the DV450-001 (conversion cable).
* See the MX100 Standard Software User’s Manual.
Alarms are not output.
Probable Cause Corrective Action Ref. Page
There is a problem in the alarm setting. Make the alarm and output relay settings appropriate. *
Both the alarm and output relay must be set appropriately.
* See the MX100 Standard Software User’s Manual.
The CF card is not detected.
Probable Cause Corrective Action Ref. Page
There is a problem with the CF card. Replace the CF card. 2-24
Eject and format the CF card, then insert it again.
3.2 Troubleshooting