323
APPENDICES
A
Appendix
3 Det
a
ils of
Rem
o
te
Buf
fer Me
mory
A
reas
(11)CH
Output variation limiter setting (address: 107H, 137H, 167H, 197H)
Set the limit of an output variation per 1s to regulate a rapid change of the manipulated value (MV).
(a) Setting range
The setting range is 0 or 1 to 1000 (0.1%/s to 100.0%/s). When 0 is set, an output variation is not regulated.
Ex.
When remote buffer memory values are set as follows:
• CH
Output variation limiter setting (address: 107H, 137H, 167H, 197H): 10 (1.0%/s) The output changes
by 0.5% per 500ms, and by 0.2% or 0.3% per 250ms respectively when the sampling cycle is 500ms and
250ms. If the manipulated value (MV) rapidly changes by 50%, the variation is regulated to 1%/s.
Therefore, it takes 50s until the output actually changes by 50%.
(b) Two-position control
The setting is ignored.
For details on the two-position control, refer to the following.
(c) Manual control
The setting is enabled.
For details on the manual control, refer to the following.
(d) Auto tuning function execution
The setting is enabled. PID constants may not be calculated properly during auto tuning when the output
variation limiter setting is changed while auto tuning function is being executed. Therefore, adjusting output
variation during auto tuning is not recommended.
For details on the auto tuning function execution, refer to the following.
(e) Enabling the setting
Enable the setting contents by either of the following.
• Turning off and on Initial data setting request flag (RY9) while the operations of all channels are stopped
• Turning off and on During operation setting change instruction (RY10)
(f) Default value
The default values are set to 0 in all channels.
Standard
Heating-cooling
100%
50%
0%
Set value (SV)
80%
500ms
0.5%
50%
Manipulated value
(MV)
Manipulated
value (MV)
increased
by 50%
When 10 (1.0%/s) is set to CH□
Output variation limiter setting
(address: 107H, 137H, 167H, 197H)
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