Delta A Series (DTA) - Temperature Controller Instructions
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Delta A Series (DTA) - Temperature Controller Instructions

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Delta A Series (DTA) - Temperature Controller Instructions

Precaution


Electric Shock!

  1. Do not touch the AC terminals while the power is supplied to the controller to prevent an electric shock.
  2. Make sure power is disconnected while checking the unit inside.


This controller is an open-type temperature controller. Make sure to evaluate any dangerous application in which a serious human injury or serious property damage may occur.

  1. Do not allow dust or foreign objects to fall inside the controller to prevent it from malfunctioning.
  2. Never modify or disassemble the controller.
  3. Do not connect anything to the "No used" terminals.
  4. Must turn power off when wiring and changing a temperature sensor.
  5. This controller is an open-type unit and must be placed in an enclosure away from high temperature, humidity, dripping water, corrosive materials, airborne dust and electric shock or vibration.
  6. Wait at least one minute after power is disconnected to allow capacitors to discharge, and please do not touch any internal circuit within this period.

Ordering Information

1 Series DTA: Delta A Series Temperature Controller
2 Panel Size 4848, 4896, 9648, 7272, 9696
3 Output Selection R: Relay output, SPDT (SPST: 1/16 DIN size), 250VAC, 5A
V: Voltage Pulse output, 14V+10% ~ -20% (Max. 40mA)
C: Current output, 4~20mA
4 Communication (Optional) 0: No interface
1: RS-485
5 Current Transformer (Optional) None: No CT function (Current transformer is not provided)
T: Current transformer is provided (only DTA7272 series support)

Display, LED & Pushbuttons

  • PV Display : to display the process value or parameter type.
  • SV Display : to display set point, manipulated variable or set value of the parameter.
  • AT : flashes when the Auto-tuning operation is ON.
  • OUT : lights when the output is ON.
  • ALM1 / ALM2 : lights when Alarm 1 or Alarm 2 output is ON.
  • : Function key. Select the desired function mode and confirm a setting value.
  • : Mode key. Press this key to set parameters within each function mode.
  • : Up key. Press this key to increase values displayed on the SV display. Hold down this key to speed up the
  • : Down key. Press this key to decrease values displayed on the SV display. Hold down this key to speed up the decrements

Specifications

Input voltage 100 ~ 240VAC, 50/60Hz
Display method 7-segment digit LED Display Process value (PV): Red, Set point (SV): Green
Sensor type Thermocouple: K, J, T, E, N, R, S, B, U, L, Txk
3-wire Platinum RTD: Pt100, JPt100
Copper resistor: Cu50
Control mode PID, ON/OFF control or Manual tuning
Display accuracy 0.1% of measuring range
Sampling rate 500 msec/per scan
Ambient temperature 0o C ~ 50o C
Relative humidity 35% ~ 80% (non-condensing)

Operation

Operation

  1. Operation Mode: Perform per the settings of related control parameters
LED Display Explanation Default
RUN/STOP: Control setting begins. Run ( ) or Stop ( ) mode on the SV display. RUN
ALARM1 HIGH: Upper-limit alarm 1 4.0 oC
ALARM1 LOW: Lower-limit alarm 1 4.0 oC
ALARM2 HIGH: Upper-limit alarm 2 4.0 oC
ALARM2 LOW: Lower-limit alarm 2 4.0 oC
Setting lock: Lock 1 ( ), Lock 2 ( ) or OFF ( ) on the SV display. Lock 1 mode can lock all settings and Lock 2 mode only can lock others than SV value. When OFF mode is selected, the Lock function will be OFF.
If you press and key simultaneously, the "Lock" status can be released and the controller will be back to the previous display.		 OFF
OUT: Output value display and output value adjustment in manual tuning control 0
CT: In case of using an external current transformer (CT), the controller displays the current value being measured by CT, if the control output is ON Read only
  1. Regulation Mode: Set the control parameters
LED Display Explanation Default
AT: Auto-tuning setting. When AT key is set to ON ( ). OFF
P: Proportional Band (PID control) 47.6
I: Integral Time (PID control) 260
D: Derivative Time (PID control) 41
PdoF: Offset output when P or PD control function is ON. 0
ioF: Default value of integral volume when PID control function is ON and integral time constant is not equal to 0(zero). 0
HTS: Set Heating hysteresis when ON/OFF control function is ON. 0
CTS: Set Cooling hysteresis when ON/OFF control function is ON. 0
HTPD: PID heating control cycle setting (PID control) C, V: 4sec
CLPD: PID cooling control cycle setting (PID control) R: 20sec
TPOF: Regulate temperature deviation value 0
TPGN: Regulate temperature gain value 0
CRHI: Regulate 20mA output deviation value 0
CRLO: Regulate 4mA output deviation value 0
  1. Initial Setting Mode: Initial settings of the controller and communication parameters
LED Display Explanation Default
INPUT: Select input temperature sensor type PT2
UNIT: Temperature display unit, C ( ) and F ( ) oC
T-HIGH: Upper limit for temperature range 500.0
T-LOW: Lower limit for temperature range -20.0
CONTROL: Control method setting on the SV display: PID ( ), ON/OFF control ( ), or manual tuning ( ) PID
SWITCH: Select Heating ( ) or Cooling ( ) action HEAT
AL1 SET: Alarm 1 setting 0
AL2 SET: Alarm 2 setting 0
C SELECT : ASCII, RTU communication formats selection ASCII
C WE: Write-in function disable/enable OFF
C NO: Address setting 1
BPS: Baud rate setting 9,600
LENGTH: Data length setting 7
PARITY: Parity bit setting E
STOP BIT: Stop bit setting 1

Temperature Sensor Type & Temperature Range

Sensor type Display Range Sensor type Display Range
Pt100 0.0 ~ 100.0°C E 0 ~ 600°C
Pt100 -20.0 ~ 500.0°C T -20.0 ~ 400.0°C
Pt100 -200 ~ 600°C T -200 ~ 400°C
JPt100 0.0 ~ 100.0°C J -20.0 ~ 400.0°C
JPt100 -20.0 ~ 400.0°C J -100 ~ 850°C
Cu50 -50.0 ~ 150.0°C K -20.0 ~ 500.0°C
Cu50 -50 ~ 150°C K -200 ~ 1300°C
B 100 ~ 1800°C L -200 ~ 850°C
S 0 ~ 1,700°C U -200 ~ 500°C
R 0 ~ 1,700°C Txk -200 ~ 800°C
N -200 ~ 1,300°C

Alarm Outputs

Set Value Alarm Type
0 Alarm function disabled
1 Deviation upper- and lower-limit:
This alarm output operates when PV value is higher than the setting value SV+(AL-H) or lower than the setting value SV-(AL-L).
2 Deviation upper-limit:
This alarm output operates when PV value is higher than the setting value SV+(AL-H).
3 Deviation lower-limit:
This alarm output operates when PV value is lower than the setting value SV-(AL-L).
4 Reverse deviation upper- and lower-limit:
This alarm output operates when PV value is in the range of the setting value SV+(AL-H) and SV-(AL-L).
5 Absolute value upper- and lower-limit:
This alarm output operates when PV value is higher than the setting value AL-H or lower than setting value AL-L.
6 Absolute value upper-limit:
This alarm output operates when PV value is higher than the setting value AL-H.
7 Absolute value lower-limit:
This alarm output operates when PV value is lower than the setting value AL-L.
8 Deviation upper- and lower-limit with standby sequence:
This alarm output operates when PV value reaches set value (SV value) and the value is higher than the setting value SV+(AL-H) or lower than the setting value SV-(AL-L).
9 Deviation upper-limit with standby sequence:
This alarm output operates when PV value reaches set value (SV value) and the reached value is higher than the setting value SV+(AL-H).
10 Deviation lower-limit with standby sequence:
This alarm output operates when PV value reaches the set value (SV value) and the reached value is lower than the setting value SV-(AL-L).
11 Hysteresis upper limit alarm output: this alarm output operates if PV value is higher than the setting value SV+(AL-H). This alarm output is OFF when PV value is lower than the setting value SV+(AL-L).
12 Hysteresis lower limit alarm output: this alarm output operates if PV value is lower than the setting value SV-(AL-H). This alarm output is OFF when PV value is higher than the setting value SV-(AL-L).
13 CT alarm output:
This alarm operates when the current measured by transformer (CT) is lower than AL-L or higher than AL-H (This alarm output is available only for the controller with current transformer). You can set current alarm range between 0.5A ~ 30A, display resolution is 0.1A and measure accuracy is +/- 0.5A.

Communication Parameters List

  • Communication protocol: Modbus (ASCII), 2400 ~ 38400bps
  • Function code: 03H to read the contents of register (Max. 3 words); 06H to write 1 (one) word into register.
Address Content Explanation
4700H (R) Process value (PV) Measuring unit is 0.1 oC or oF
4701H Set point (SV) Unit is 0.1, oC or oF
4702H Upper-limit alarm 1
4703H Lower-limit alarm 1
4704H Upper-limit alarm 2
4705H Lower-limit alarm 2
4706H Upper-limit of temperature range The data content should not be higher than the temperature range.
4707H Lower-limit of temperature range The data content should not be lower than the temperature range.
4708H PB Proportional band 0.1 ~ 999.9, unit is 0.1
4709H Ti Integral time 0 ~ 9,999
470AH Td Derivative time 0 ~ 9,999
4711H Control method 0: PID, 1: ON/OFF, 2: manual tuning
4714H Temperature regulation value -999 ~ 999, unit: 0.1
4718H Heating/Cooling control Selection Heating: 0 (default), Cooling: 1
4719H Control Run/Stop setting Run: 1 (default), Stop: 0
4729H AT setting Off: 0 (default), On: 1
4733H CT monitor value Unit is 0.1A

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