Heating And Cooling Control - Delta A Series Instruction Sheet

Temperature controller

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User manual

Table Of Contents

Table of Contents

Regulation Mode

P/PD control offset

setting

(When PID control is ON and Ki=0, set the

value of Pdof; if Ki≠0, AT will automatically

set the value of Iof)

Heating/Cooling

hysteresis

(In ON-OFF control)

Set Heating/Cooling

control cycle

(In PID control)

Regulate temperature deviation value

Regulate 20mA output deviation value

(Display when in current output)

Regulate 4mA output deviation value

(Displayed when in current output)

Press

return to auto-tuning setting

Heating and Cooling Control

Temperature control is achieved either by heating or by cooling. The heating function starts when the process temperature (PV) is going down,

and the cooling function when the temperature is getting high. It is impossible to operate both functions simultaneously in this controller.

Upper-limit alarm 2

(This parameter is available only when ALA2

function enables)

Press

Lower-limit alarm 2

(This parameter is available only when ALA2

function enables)

Press

Setting lock mode

Press

Output value display and adjust

Press

CT function is selected

In case of using an external CT, the controller

displays the current value being measured by

CT, if the control output is ON.

Press

Operation Mode

Press

return to temperature display

- 5 -

Initial Setting Mode

Select control mode

Select Heating/Cooling functions

Alarm 1 setting

Alarm 2 setting

ASCII, RTU communication formats

selection

Write-in function disable/enable