Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 1139

Action setting: (s3)+1
■Direction (direct action/reverse action): Bit 0 of (s3)+1
Setting range: Off = Direct action, On = Reverse action
Select the direction of PID control, direction action or reverse action.
• Auto tuning (limit cycle method)
The PID control direction must be set.
• Auto tuning (step response method)
At completion of auto tuning executed in whichever mode, direct action or reverse action, setting is made automatically.
[Direct action (bit 0 of (s3)+1 = Off)]
[Reverse action (bit 0 of (s3)+1 = On)]
■Alarm setting (input variation, output variation): Bit 1 and bit 2 of (s3)+1
Setting range: Off = Alarm disabled, On = Alarm enabled
The input and output variation amounts can be checked. The check result can be checked in (s3)+24. ( Page 1141 Alarm
output flag: (s3)+24)
• Input variation (bit 1 of (s3)+1)
To use the input variation alarm, the following bit needs to be on and the values need to be set to the following devices.
Setting item
Action setting (ACT)
Input variation alarm setting value
• Output variation (bit 2 of (s3)+1)
To use the output variation alarm, the following bits need to be on and the values need to be set to the following devices.
Setting item
Action setting (ACT)
Output variation alarm setting
value
(s3)+1 Bit 1
(s3)+20
(s3)+21
(s3)+1 Bit 2
Bit 5
(s3)+22
(s3)+23
Description
Input variation alarm
Input variation (increase) alarm setting
value
Input variation (decrease) alarm setting
value
Description
Output variation alarm
Output upper/lower limit value setting
Output variation (increase) alarm setting
value
Output variation (decrease) alarm setting
value
9 PID OPERATION INSTRUCTION
Setting range
On: Enabled
Off: Disabled
0 to 32767
Setting range
On: Enabled
Off: Disabled
Off (always)
0 to 32767
1137
9.1 Overview
9