Mitsubishi Electric MELSEC iQ-R Series User Manual page 270

CH1 Output variation amount limiter
Set the limit of the output variation amount per 1s to regulate a rapid change of the manipulated value (MV).
■Buffer memory address
The following shows the buffer memory address of this area.
Buffer memory area name
CH Output variation amount limiter
CH Output variation amount limiter (in the Q compatible mode)
■Setting range
The setting range is 0 or 1 to 1000 (0.1 to 100.0%/s). When 0 is set, the output variation amount is not regulated.
Ex.
When the following values have been set in the buffer memory areas:
When 'CH1 Output variation amount limiter' (Un\G510) has been set to 10 (1.0%/s) and the sampling cycle is 500ms, an
output value changes by 0.5% per 500ms. When the sampling cycle is 250ms, an output value changes by 0.2% or 0.3% per
250ms. Thus, even though the manipulated value (MV) rapidly changes by 50%, the variation amount is regulated to 1%/s. It
takes 50s until the output actually changes by 50%.
100%
80%
Manipulated value
(MV)
50%
0%
(1) When 'CH1 Output variation amount limiter' (Un\G510) has been set to 10 (1.0%/s)
■Two-position control
The setting is ignored.
■Manual control
The setting is enabled.
■At the execution of the auto tuning
The setting is enabled. However, when the output variation amount limiter setting is changed during the auto tuning,
appropriate PID constants may not be calculated. Therefore, adjusting the output variation amount during the auto tuning is
not recommended.
■Default value
The default value is 0.
APPX
268
Appendix 3 Buffer Memory Areas
CH1
510
44
Manipulated
value (MV)
increased
by 50%
Set value (SV)
CH2 CH3
710 910
76 108
(1)
50%
0.5%
500ms
CH4
1110
140