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(20)CH Adjustment sensitivity (dead band) setting (address: 111H, 141H, 171H,
1A1H)
Standard
Heating-cooling
To prevent a chattering in the two-position control, set the adjustment sensitivity (dead band) for the set value
(SV).
Temperature
process value (PV)
Set value (SV)
Transistor output
For details on the two-position control, refer to the following.
Page 149, Section 8.3.3
(a) Setting range
Set the value within the range 1 to 100 (0.1% to 10.0%) of the full scale of the set input range.
For details on the input range, refer to the following.
Page 312, Appendix 3 (5)
When the value of the remote buffer memory is set as follows; CH Input range (address: 100H, 130H,
Ex.
160H, 190H): 38 (temperature measurement range: -200.0 to 400.0), CH Adjustment sensitivity
(dead band) setting (address: 111H, 141H, 171H, 1A1H): 10 (1.0%)
The following calculation shows that the dead band is the range of 6.0 with the set value (SV) being set
as the center of the range.
• (Full scale) (Adjustment sensitivity (dead band) setting) = (400.0 - (-200.0)) 0.01 = 6.0
(b) 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)
(c) Default value
The default values are set to 5 (0.5%) in all channels.
ON
OFF
APPENDICES
Adjustment
sensitivity
(dead band)
Time
A
331
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Troubleshooting
