Mitsubishi Electric MELSEC iQ-R Series User Manual page 283

CH1 Open/close output neutral band setting
Set the output OFF area between the open side output and the close side output.
A neutral band is a value range where both of the open side output and the close side output are not ON.
Repetitive outputs to the control motor due to frequent opening and closing can be prevented.
If the control motor is frequently opened and closed, set a larger value.
If the temperature fluctuates due to infrequent opening and closing, set a smaller value.
When the control operation result (MV) exceeds the neutral band, output to the control motor starts.
Ex.
The following figure shows an ON timing example of open/close outputs when the control motor time is 100 seconds and the
open/close output neutral band is 2.0%.
Addition of +ΔMV
1
Neutral band
0
-1
Addition of -ΔMV
OPEN
Turn on the open side.
CLOSE
(1) When the operation result (MV) is larger than 1, the open side output turns ON.
(2) When the operation result (MV) is smaller than -1, the close side output turns ON.
■Buffer memory address
The following shows the buffer memory address of this area.
Buffer memory area name
CH Open/close output neutral band setting
CH Open/close output neutral band setting (in the Q compatible mode)
■Setting range
1 to 100 (0.1 to 10.0%)
■Default value
The default value is 20 (2.0%).
Sampling cycle
Turn on
(1)
the close side.
(2)
CH1 CH2
527 727
1040 1056
Appendix 3 Buffer Memory Areas
CH3 CH4
927 1127
1072 1088
APPX
281
A