TOHO ELECTRONICS TTM-00BT - Manual (Page 33)

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9. Maintenance and inspection
Symptom Check item
Inaccurate measurement Is the sensor normal? (Connect a different sensor to the line. Does it show a
similar symptom?)
Is the sensor correctly connected?
Is the correct sensor type set? (Is the sensor the same as the type setting
entered in the product?)
Are all the PV correction values set to the correct levels?
The setting does not match
the measurement. Does the heater have a sufficient capacity?
Is the integral time (I) set to the correct setting?
Poor control Is the PID value correct? Perform auto-tuning again.
Abnormal output
(control/event output) Is the output terminal correctly connected?
Is the control type set to the correct setting?
No communication occurs Are the switches SW1 and SW2 set to the correct unit number and
communication speed?
If you find any other question or doubt, contact our Sales Department.