Specifications and Product Details:

30 segments A18P programme temperature controller

Ramp Mode(PAF : B=0)

Programming of instrument has uniform format of temperature-time-temperature, which means temperature “A”(SP 1), passed Time “A”(t01), then reached Temperature “B”(SP 2). The unit of temperature set is °C and the unit of time set is minute. The following example includes 5 steps, which is linear temperature heating up, constant temperature, linear temperature cooling down, jump cycling, ready, Hold..
StEP1: SP 1=100 , t 1=30.0 Start linear temperature heating up from 100°C, and the time needed 30 minutes to reach SP 2(400 degree).
StEP2: SP 2=400 , t 2=60.0 Temperature raised to 400°C, slope of raising curve is 10°C/minute, The program take 60 minutes to raise temperature to SP3 (400 degree). It means keep the same temperature in 60 minutes.
StEP3: SP 3=400 , t 3=120.0 This is the step for temperature cooling down, slope of cooling curve is 2°C/minute, and the time needed is 120 minutes to reach SP4 (160degree).
StEP4: SP 4=160 , t 4=0.0 When temperature reached 160 degree, the program get in Hold state. If need go to next step, it needed operator to executed the “run” for next step.
StEP5: SP 5=160 , t05=-1.0 Jump to StEP1 to start from beginning.
In this example, it is assumed that the deviation high alarm is set to 5°C. Because the temperature of StEP 5 is 160°C, and the temperature of StEP1 is 100°C, when program jumps from StEP 5 to StEP 1, the program will change to preparation state at first(if preparation mode “rdy” was enabled), i.e., Control the temperature until the deviation between setpoint and PV is less than deviation high alarm value. After temperature is controlled to 105°C, the program will be started from StEP 1, and run the above steps again. The temperature control drawing was shown below.

Soak mode(PAF : B=1)
Suitable for the process which does not need to establish the temperature slope, can simplify the programming and more effective. Each step also can set parameter “SPr” to define temperature raise slope, if “SPr=0” raising speed will set to maximum. Because cannot know the actual time which spend on temperature raising, user can enable “rdy” function to ensure the correct soak time.
Time setting
Set “t-xx” = 0.1~3200 (min)
Set the time of xx StEP. (Time units can be change to Hour by parameter “PAF”.)
Set “t-xx” = 0.0
The program hold on StEP xx, program will hold running and hold counting time.
Set “t-xx” = -121.0
The program stops, and switches to stop status.
Set “t-xx” = -0.1~-122.0
Negative value of this range represents a jump operation which will jump to step xx and event output. Range -1~-120 is for step jumping application. The step jumping cannot greater than “Pno”(No. of Program step).

Decimal point use for control the event output from AL1 and AL2. (Modular), Note, if parameter AOP was assigned alarm action will trigger from AL1 and AL2, the event output also will cause alarm from AL1 and AL2.

When set -XXX.1, AL1 activate, AL2 release
-XXX.2, AL1 release, AL2 activate
-XXX.3, AL1 and AL2 activate
-XXX.4, AL1 and AL2 release Example:
Example 1 : t -5 = -1.1 ; means when the program arrived step 5, AL1 activate, AL2 release and will jump to step 1 continues running
Example 2 : t-6 = -0.3 ; means when the program arrived step 6, AL1 and AL2 activate and continuous next step.
Note: The program will be held if it jump from a control segment to another control segment (an Hold action will be inserted between two control sections), external run/Hold operation is needed to release the Hold status. It is not allowed that the jump section jump to itself (for example: t -6= -6), otherwise, the Hold status cannot be released.
Program arrangement of multi-curve operation A- 18P has the advanced function of flexible program arrangement. Normally, when the program stops, the StEP will be automatically set to1. Thus if StEP is not change to other value, a program will start from step1. If multiple curves are defined, the control can jump to different curve by setting step 1 as jump segment.
For example: There are three curves with the length of 3 steps represent three groups of process parameter, they are separately arranged on StEP2-StEP4, StEP5-StEP7, StEP8-StEP10. Settings are as follows:
t- 1=-2.0 Execute the program of curve 1 (StEP2-StEP4)
t- 1=-5.0 Execute the program of curve 2 (StEP5-StEP7)
t- 1=-8.0 Execute the program of curve 3 (StEP8-StEP10)
Note: Can choose the curves by setting the value of StEP "t-1" set to -2.0, -5.0 or -8.0 before the program startup.

Parameter Setting Flow Chart:

Details photo of temperature controller: