Delta DT3 instruction sheet Check the Firmware Version and Output Type

¾To set Retransmission to positive/negative slopes (a Retransmission board must be installed first): In 【Initial Setting Mode】 set

the parameter, the last digit (Y) of xxxY indicates when Y=0 positive slope; when Y=1 negative slope.

¾To adjust the lower limit of Retransmission:

a、 Make sure the slope of Retransmission is positive.

b、 Set lower limit value larger than the display value: In【Initial Setting Mode】set the value in larger than the display value

(PV).

c、 Input the analog value to meter, check the meter and adjust the analog input value: In 【Regulation Mode】, enter the new value

into . For example, if the range is 4~20mA, the new value will be 4mA.

¾To adjust the upper limit Retransmission:

a、 Make sure the slope of Retransmission is positive.

b、 Set upper limit value smaller than the display value: In【Initial Setting Mode】set the value in smaller than the display

value (PV).

d、 Input the analog value to meter,check the meter and adjust the analog input value: In 【Regulation Mode】, enter the new value

into. For example, if the range is 4~20mA, the new value will be 4mA.

Check the Firmware Version and Output Type

When the temperature controller is ON, the PV and SV display will shows firmware version, output type and accessory functions in first 3 seconds.

¾PV (first 3 digits) indicates the firmware version. Ex: 110 indicates firmware version V1.10.

¾PV (4th digit) indicates the function of accessory 1.

C: RS485 Communication E: EVENT3 Input

¾SV (frist 2 digits) indicates the output type of OUT1 and OUT2.

N: No function V: Voltage pulse output R: Relay output C: Current output

L: Linear voltage output S: SSR output

¾SV (3rd digit) indicates the function of accessory 2.

N: No function C: CT measure E: EVENT1 input R: REMOTE input

¾SV (4th digit) indicates the function of accessory 3.

N: No function C: CT measure E: EVENT2 input R: RETRANSMISSION output

Selection for Heating/Cooling/Alarm/Dual Loop Output Control

DT3 series offers 1 set of Output Control (OUT1) that is built-in internally and 2 sets of Alarm Output(ALARM1 及 ALARM2). User can also purchase a 2nd set of Output Control (OUT2) or a 3rd set of Alarm Output (ALARM3).

zUsing 1 set of Output Control :

In【Initial Setting Mode】, sets to Heating (H1) or Cooling(C1) mode.

zUsing 2nd set of Output Control:

¾When the 2nd set of output control (OUT2) is used as a 3rd set of arlarm (ALARM3), set to Heating + Alarm 3(H1A2) or Cooling + Alarm 3(C1A2) in 【Initial Setting Mode】.

OUT2 output types in relay, voltage pulse, analog current, linear voltage and SSR output can all be used for ALARM ON-OFF. For example, OUT2 is set to analog current output. It outputs 4mA when alarm is OFF and outputs 20mA when alarm is ON.

¾When the 2nd set of output control (OUT2) is used as dual output control, set to heating (H1H2); cooling (C1C2); Heating/Cooling(H1C2) or Cooling/Heating (C1H2) control mode in【Initial Setting Mode】.

The Dead Band parameter is automatically enabled when the temperature controller is in dual output control. As shown

in the diagram follow. The purpose of Dead Band function is to reduce the energy wastage of frequent heating/cooling actions. For

example, if SV = 100 degree and = 2.0, there will be no output when the temperature is between 99~101°C..

Output of when in ON-OFF control mode (Ctrl=ON-OFF control):

Adjust heating hysteresis Adjust cooling hysteresis

HeatingCooling

Set Point

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