1: Display and record * incorrect
Check if the input signal is correct
Is the wiring position correct
Is the range code set correctly
2: There is a display, but no heat print record
Check if the recording paper is installed upside down. The recording paper has both sides
Use your nails to scratch on the recording paper, with black scratches on the front facing upwards
3: Display correct, record curve incorrect
Check if the left and right boundaries of the set records and the paper feed speed are correct.
4: Display incorrect
For voltage and current signals, display lower and upper limits must be set
5: Display as "-- --"
Indicates that the input signal of the channel is abnormal, and external signals need to be detected at this time.
6: The alarm is incorrect
Cannot alarm, check if the set upper and lower limits are correct at this time.
The alarm can only be triggered when the upper limit alarm value is greater than the lower limit alarm value.
If the second level alarm is abnormal, the upper and lower limits of deviation should be checked at this time.
Only when the upper and lower limits of deviation are not zero, can a secondary alarm be triggered.
Check if the output item of the alarm relay is set.
When setting the alarm, the output item of the alarm relay must be set, otherwise the relay will not operate.