177
CHAPTER 8 FUNCTIONS
8
8.
3 T
e
mperat
ure Cont
rol
M
ode
(7) Setting the alert dead band
When the temperature process value (PV) or deviation (E) is close to the alert set value, alert status and non-
alert status may alternates repeatedly due to inconsistent input.
Such a case can be prevented by setting an alert dead band.
(a) Setting method
1.
Set "Method selection" to "Param write" of the control mode to be used.
"CC IE Field Configuration" window
Select the temperature control module from "List of
stations"
[CC IE Field Configuration]
[Online]
[Parameter Processing of Slave Station]
2.
Set "Warning non-inductive belt setting".
Ex.
When the alert mode is set to "1: Upper limit input alert" (
When a value other than 0 (0.0%) is set in Alert dead band setting (address: 1E0H), the system is put in
the alert status when upper limit input becomes equal to or greater than the alert set value. The system is
put in the non-alert status when the upper limit falls below the alert dead band. (right figure below)
When 0 (0.0%) is set in Alert dead band setting (address: 1E0H)
When a value other than 0 (0.0%) is set in Alert dead band setting
(address: 1E0H)
Non-alert status
Alert status
Time
Temperature process value (PV)
Alert status
Alert set value
Non-alert status
Alert status
Time
Dead band
Temperature process value (PV)
Alert status
Alert set value
Summary of Contents for NZ2GF2B-60TCRT4
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