Mitsubishi Electric FX5 User Manual page 75

Alarm setting (for input variation and output variation)
If b1 and b2 in (s3) +1 are turned ON, the input variation and the output variation can be checked. The check is executed by
following the values of (s3) +20 to (s3) +23.
These parameters can be set in (s3)+24.
For details on operation of alarm output, refer to Page 81 Alarm output (s3)+24.
• Input variation
If the input variation alarm is used, turn ON b1 in (s3) +1, and specify the input variation alarm set value.
Set item
Operation setting
Input variation alarm set value
• Output variation
If the output variation alarm is used, turn ON b1 in (s3) +1, and specify the output variation alarm set value.
When this function is used, make sure to turn OFF b5 of (s3) +1.
Set item
Operation setting
Output variation alarm set value
Variation means (Current value) - (Previous value)
Upper and lower limits for output value
When the upper and lower limit settings of the output value are valid, the output value is as shown in the chart. The upper limit
and lower limit of the output value can moderate the increase of the integral item in the PID control.
When using the upper limit and lower limit of the output value, make sure to set (s3)+1, b2 to OFF.
Set item
Operation setting
Output value (MV)
(s3)+22
Output value upper limit
(s3)+23
Output value lower limit
(s3)+1: b1 Input variation alarm
(s3)+20 Input variation (incremental) alarm set value
(s3)+21 Input variation (decremental) alarm set value
(s3)+1: b2 Output variation alarm
(s3)+1: b5 Output value upper/lower limit setting
(s3)+22 Output variation (incremental) alarm set value
(s3)+23 Output variation (decremental) alarm set value
(s3)+1: b2 Output variation alarm
(s3)+1: b5 Output value upper/lower limit setting
When the upper limit and
lower limit of output value are not set
When the upper limit and
lower limit of output value are set
Setting description/Setting range
ON: Used
OFF: Not used
0 to 32767
0 to 32767
Setting description/Setting range
ON: Used
OFF: Not used
Make sure to set it to OFF
0 to 32767
0 to 32767
Setting description/Setting range
Make sure to set it to OFF
ON: Used
OFF: Not used
These values are not output
These values are not output
Time
10 PID CONTROL FUNCTION
10.6 Details of Parameters
10
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