LAE electronic AC1-5A Series User Manual

Also see for AC1-5A series: Instructions for use Instructions for use

LAE electronic AC1-5A Series User Manual Manual pdf 1 page image

DISPLAYDuring normal operation, the display shows either the temperature measured or one of the following indications:OFF Controller in stand-by TUN/xx.x Controller in autotuningOR Probe T1 overrange or failure E1 In tuning: timeout1 errorHI Room high temperature alarm E2 In tuning: timeout2 errorLO Room low temperature alarm E3 In tuning: overrange errorMENU INFOThe information available in this menu is:THI Maximum temperature recorded LOC Keypad state lockTLO Minimum temperature recordedAccess to menu and information displayed.Press and immediately release button■ .With button■ or select the data to be displayed.Press button■ to display value.To exit from the menu, press button■ or wait for 10 seconds.Reset of THI, TLO recordingsWith button■ or select the data to be reset.Display the value with button■ .While keeping button■ pressed, use button .CHANNEL 1 SETPOINT (display and modification of desired temperature value)Press and release button■ : the LED L1 blinks, the display shows 1SP for 1 second and then the setpoint associated value.Press buttons■ or to set the desired value (adjustment is within the minimum SPL and maximum SPH limit).To store the new value press button■ , or wait for 10 seconds.To go back to normal mode without saving the new value, press■ .CHANNEL 2 SETPOINTWith the auxiliary output set as thermostat control (■ OAU=THR), it’s possible to modify setpoint 2 during the normal operationof the controller.Press and release button■ : the LED L2 blinks, the display shows 2SP for 1 second if setpoint 2 is an absolute threshold(2SM=ABS), alternatively the display shows 2DF, if setpoint 2 is a threshold relative to setpoint 1 (2SM=REL), then the valueassociated to the parameter appears.Press buttons■ or to set the desired value.To store the new value press button■ or wait for 10 seconds.To go back to normal mode without saving the new value, press■ .STAND-BYButton , when pressed for 3 seconds, allows the controller to be put on a standby or output control to be resumed (with SB=YES only).KEYPAD LOCKThe keypad lock avoids undesired, potentially dangerous operations, which might be attempted when the controllers is operatingin a public place. In the INFO menu, set parameter LOC=YES to inhibit all functions of the buttons. To resume normal operationof keypad, adjust setting so that LOC=NO.CONTROLLER AUTOTUNING IN PID MODEBefore startingIn the setup mode (see configuration parameters): set 1CM=PID; make sure that 1CH matches the desired operation mode(1CH=REF for refrigerating control, 1CH=HEA for heating control); then adjust setpoint 1SP at the desired value.Start autotuningDuring normal operation, keep buttons + pressed for 3 seconds. 1CT blinks on the display. With + or set the cycletime in order to define the dynamic of the process to be controlled. To abort the autotuning function, press ; to start autotuningpress + or wait for 30 seconds.During autotuningDuring 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 placesuccessfully, the controller updates the control parameters and start to control.ErrorsIf 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 heatingcontrol, vice versa, decrease 1SP in case of refrigerating control and re-start the process.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.E3 temperature overrange: check that the error was not caused by a probe malfunction, then decrease■ 1SP in case of heatingcontrol, vice versa increase 1SP in case of refrigerating control and then re-start the process.To eliminate the error indication and return to the normal mode, press button■ .Control improvementTo reduce overshoot, reduce the integral action reset■ 1ARTo increase the response speed of the system, reduce the proportional band■ 1PB. Caution: doing this makes the system less stable.To reduce swings in steady-state temperature, increase the integral action time■ 1IT; system stability is thus increased, althoughits response speed is decreased.To increase the speed of response to the variations in temperature, increase the derivative action time■ 1DT. Caution: a highvalue makes the system sensitive to small variations and it may be a source of instability.RECALIBRATIONHave a precision reference thermometer or a calibrator to hand. Ensure that■ OS1=0 and SIM=0.Switch the controller off then on again.■During the auto-test phase, press buttons■ + and keep them pressed till the controller shows 0AD.With buttons■ and select 0AD or SAD: 0AD allows a calibration of 0, inserting a constant correction over the whole scaleof measurement. SAD allows a calibration of the top part of the measurement scale with a proportional correction between thecalibration point and 0.Press■ to display the value and then use + or to make the read value coincide with the value measured by thereference instrument.Exit from calibration by pressing button■ .OPERATIONInsert the controller through a hole measuring 71x29 mm;■Make sure that electrical connections comply with the paragraph “wiring diagrams”. To reduce the effects of electromagnetic■disturbance, keep the sensor and signal cables well separate from the power wires.Fix the controller to the panel by means of the suitable clips, by pressingly gently; if fitted, check that the rubber gasket adheres■to the panel perfectly, in order to prevent debris and moisture infiltration to the back of the instrument.Place the probe T1 inside the room in a point that truly represents the temperature of the stored product.■INSTALLATIONOUT1OUT2L1L2Channel 1 outputChannel 2 outputAlarmChannel 1 setpoint modificationChannel 2 setpoint modificationInfo / Enter buttonFig.1 - Front panelModify Setpoint 1 / Decrease buttonIncrease / Modify Setpoint 2 buttonExit / Stand-by button.Thank you for having chosen a LAE electronic product. Before installing the instrument, please read these instructions carefullyto ensure maximum performance and safety.DESCRIPTION INDICATIONAC1-5 INSTRUCTION FOR USE

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