User manual TELEFUNKEN DIAMOND DPF 9332 WIFI

[. . . ] With 1CM=HY you select control with hysteresis: parameters 1HY, 1T0 and 1T1 are used. With 1CM=PID you select a Proportional-Integral-Derivative control mode: parameters 1PB, 1IT, 1DT, 1AR, 1CT will be used. 1 - Front panel Temperature alarm with relative thresholds, refrigerating control (ATM=REL, 1CH=REF) ATM=ABS Temperature alarm with relative thresholds, heating control (ATM=REL, 1CH=HEA). see table of input specifications Measurement accuracy Operating conditions ATM=REL ■■ The DIAMOND DPF 9332 WIFI sizes 110x75x55 mm (WxHxD). [. . . ] With AHR=0 the high temperature alarm is excluded. After output 1 has been turned off, it temperature value measured. Remains inactive for 1T0 minutes regardless of the The information available in this menu is: Maximum temperature recorded Minimum temperature recorded Keypad state lock 0. After output 1 has been turned on, it remains active for 1T1 minutes regardless of the temperature value measured. Temperature control takes place by changing the ON time of the output: the closer the temperature to the setpoint, the less time of activation. A small proportional band increases the promptness of response of the system to temperature variations, but tends to make it less stable. A purely proportional control stabilises the temperature within the proportional band but does not cancel the deviation from setpoint. 9 Minimum range value (in the models DIAMOND DPF 9332 WIFIA… only) RLO takes the minimum value measured by the transmitter (i. Maximum range value (in the models DIAMOND DPF 9332 WIFIA… only) RHI takes the maximum value measured by the transmitter (i. The value matching 1V) Delay for minimum temperature (TLO) and maximum temperature (THI) logging. – â–  To exit from the menu, press button or wait for 10 seconds. With + or set the cycle time in order to define the dynamic of the process to be controlled. To abort the autotuning function, press ; to start autotuning press + or wait for 30 seconds. During autotuning During the entire autotuning phase, the display alternates TUN with the actual temperature measured. In case of power failure, when power is resumed, after the initial autotest phase, the controller resumes the autotuning function. To abort the autotuning, without modifying the previous control parameters, keep button pressed for 3 seconds. After the autotuning has taken place successfully, the controller updates the control parameters and start to control. Errors If the autotuning function failed, the display shows an error code: ■■ E1 timeout1 error: the controller could not bring the temperature within the proportional band. increase 1SP in case of heating control , vice versa , decrease 1SP in case of refrigerating control and re-start the process. – â–  E2 timeout2 error: the autotuning has not ended within the maximum time allowed (1000 cycle times). Re-start the autotuning process and set a longer cycle time 1CT. – â–  E3 temperature overrange: check that the error was not caused by a probe malfunction, then decrease 1SP in case of heating control, vice versa increase 1SP in case of refrigerating control and then re-start the process. [. . . ] Caution: a high value makes the system sensitive to small variations and it may be a source of instability. 100% Reset of integral action time referred to 1PB Decreasing the parameter 1AR reduces the integral control action zone, and consequently the overshoot (see figure on paragraph 1IT). It’s the period in which the output ON time changes. The quicker the system to be controlled reacts to temperature variations, the smaller the cycle time must be, in order to obtain higher temperature stability and less sensitivity to load variations. [. . . ]