Delta DTK Series User Manual

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(output 2).
 Setting of Dead Band for both outputs: Set Dead Band via parameter
in Regulation Mode.
 PID Mode:
When setting for heating or cooling, the program performs PID operation via input temperature and setting temperature,
with the operation result output for control of the temperature. A PID parameter and control period must be set for this function;
these parameters can also be generated automatically via auto-tuning (AT).
a. Set PID parameters and the control period: PID parameters can be adjusted manually according to system characteristics or
created automatically by AT. Proportional error compensation is used when I parameter is set to 0 for adjusting reduced
deviation from time to reach the temperature.The Control Period is the period of PID operation, if the control period is 10
seconds, it means a PID operation is carried out every 10 seconds. The result is then output to control the temperature.If the
system heats up quickly, the control period shall not be set too long. For relay output, lifespan of the relay shall be considered.
A short control period will shorten the lifespan of relay.
b. Coef and DeadBand are added in the PID parameter for double output (one for heating and one for cooling). Coef refers to
the ratio between the first and second portions of output (P parameter of second group = Coef*P, Coef = 0.01~99.99).
DeadBand is the overlapping temperature of the P output for the first and second group.
 Set parameter
to in Initial Setting Mode.
 To set for heating or cooling control:
Select desired output control via parameter in Initial Setting Mode. If only
single output control is performed, items to be selected are H1 and C1 (H for heating, C for cooling, and 1 for output 1). If
dual output control is performed, the items to be selected are as follows: H1H2, C1H2,... C1C2 (H for heating, C for cooling,
1 for output 1, and 2 for output 2).
 Set control period:
In Regulation Mode parameter, PV is displayed as "o'x' - 'y'". 'x' is 1 (output 1) or 2 (output 2). 'y' is H
(heating) or C (cooling).
 Set double output Coef: Set Coef value via parameter in Regulation Mode.
 Setting of Dead Band for both outputs: Set Dead Band via parameter
in Regulation Mode.
 Set control to running mode:
Set parameter to in Operation Mode.
 Set AT:
Set parameter to in Regulation Mode. The selected number of PID sets will be adjusted
automatically. After that, a PID value will be created automatically and the display will automatically alter into
.
Note: When performing AT, set up for the entire system must be completed, i.e. the input sensor must be wired and correctly set,
and the output must be connected to a heater or cooler pipe.
 MANUAL Mode:
Manual control function may force output of a fixed value. However, it is normally operated in combination with
switchover of PID control.
a. Switch from PID control to manual control: Control output will retain the original control output before switching over to
manual control. E.g., if the control output calculated by PID is 20% before the switch, then the control output is 20% after
switching to manual control. You may force a fixed output value after the switch, for example, controlling the output to be
40%.
b. Switch from manual control to PID control: If manual control is 40% before switching over to PID control, the program will
take this 40% after the switch-over as the initial value for calculating the PID value and then output the new control.
Note: If power of the controller is switched off under manual control mode, the original output % will be retained when the power is
switched on again.
 Set parameter
to in Initial Setting Mode.
 Set control period:
In Regulation Mode parameter, PV is displayed as "o'x' - 'y'". 'x' is 1 (output 1) or 2 (output 2). 'y' is H
(heating) or C (cooling).
 Set output %:
In Operation Mode parameter, PV is displayed as "oUt'x'". 'x' is 1 (output 1) or 2 (output 2).
 Tune Function
This control features Auto_Tuning for automatic generation of PID parameters (only applicable when control mode is set to PID control).
 Auto_Tuning: Through output of full heating or cooling, temperature is allowed for upward and downward oscillation. Obtain
parameters for the magnitude and period to calculate PID parameters. In addition, save the temperature setting value obtained
from performing AT, so that it could be used with PID control. After Auto_Tuning, PID control will be carried out automatically.
 AT setting:
Set parameter to in Regulation Mode.
 Limits on control of output range
Maximum and minimum output can be limited. If the original maximum control output is 100% and the minimum control output is 0%, you
may set the maximum control output to 80% and the minimum control output to 20%.
 Setting the upper limit of control output:
Set values for parameters (output 1), (output 2) in Operation Mode.
 Setting the lower limit of control output:
Set values for parameters (output 1), (output 2) in Operation Mode.
 Limits on range of temperature
Different input sensors have different ranges of application (e.g.: J type factory setting is -100 ~ 1200 Ԩ). Adjust parameters
(upper limit) /
(lower limit) in Initial Setting Mode.
If lower limit is altered to 0 and upper limit is altered to 200, the limit function will be enabled in the following conditions:

Delta DTK Series Specifications

General

Brand	Delta
Model	DTK Series
Category	Temperature Controller
Language	English