Lilytech ZL-7903A Manual 

Page 1, Total 8 Pages ZL-7903A Temperature and Humidity Controller V2.7 Catalog Feature .......................................................................................................................................................................................................... 2 Main Function ............................................................................................................................................................................................... 2 Specification ................................................................................................................................................................................................. 2 Product Version............................................................................................................................................................................................ 2 Key and Display ........................................................................................................................................................................................... 2 Key ............................................................................................................................................................................................................ 3 Display ...................................................................................................................................................................................................... 3 Buzzing..................................................................................................................................................................................................... 3 Key Operation .............................................................................................................................................................................................. 3 Fast Set Temperature (T11), Fast Set Humidity (H20) .................................................................................................................... 3 Parameters Setting................................................................................................................................................................................. 3 Parameter Table ..................................................................................................................................................................................... 4 Control Function........................................................................................................................................................................................... 5 On/offline set ........................................................................................................................................................................................... 5 Ventilation Fan (R2) Control ................................................................................................................................................................. 5 Door Control (according to door switch S1, optional function) ........................................................................................................ 5 Temperature Control (R1, SSR)........................................................................................................................................................... 5 R1 control (T10 = 0)........................................................................................................................................................................... 5 External SSR hysteresis control (T10 = 1)..................................................................................................................................... 5 External SSR PID control (T10 = 2) ................................................................................................................................................ 5 High temperature protection............................................................................................................................................................. 5 Humidity Control (R3)............................................................................................................................................................................. 5 Humidify control (H10 = 1)................................................................................................................................................................ 5 Dehumidify control (H10 = 0) ........................................................................................................................................................... 5 High humidity protection ................................................................................................................................................................... 5 Egg-turning Control (R6, R7) ................................................................................................................................................................ 5 Mode 0 (U16 = 0): .............................................................................................................................................................................. 5 Mode 1 (U16 = 1): .............................................................................................................................................................................. 5 Egg turning times: .............................................................................................................................................................................. 5 Check tray data: ................................................................................................................................................................................. 6 Output R5 Control................................................................................................................................................................................... 6 R5 as periodical air exhaustion (U20 = 0)...................................................................................................................................... 6 R5 as periodical air exhaustion + temperature and humidity high limit protection (U20 = 1) ................................................ 6 R5 as periodical air exhaust + temperature high limit protection (U20 = 2) ............................................................................. 6 R5 as periodical air exhaust + humidity high limit protection (U20 = 3) .................................................................................... 6 Output R4 Control................................................................................................................................................................................... 6 R4 as illumination control (U30 = 0)................................................................................................................................................ 6 R4 as Temperature and humidity high limit protection (U30 = 1)............................................................................................... 6 R4 as Temperature high limit protection (U30 = 2) ...................................................................................................................... 6 R4 as Humidity high limit protection (U30 = 3).............................................................................................................................. 6 Output R8 (R9) Control .......................................................................................................................................................................... 6 R8 as alarm output (U40 = 0)........................................................................................................................................................... 6 R8 as Temperature and humidity high limit protection (U40 = 1)............................................................................................... 6 R8 as Temperature high limit protection (U40 = 2) ...................................................................................................................... 6 R8 as Humidity high limit protection (U40 = 3).............................................................................................................................. 6 Alarm......................................................................................................................................................................................................... 6 Alarm temperature and humidity: .................................................................................................................................................... 6 Alarm action ........................................................................................................................................................................................ 6 Auto Restart Function ............................................................................................................................................................................ 7 Incubation Day Counter ......................................................................................................................................................................... 7 Restore to Factory Default Settings..................................................................................................................................................... 7 Fahrenheit/Celsius display .................................................................................................................................................................... 7 Manually Checking the Outputs One by One..................................................................................................................................... 7 Attention ........................................................................................................................................................................................................ 7 Wiring Diagram ............................................................................................................................................................................................ 7 Dimension ..................................................................................................................................................................................................... 8 Apendix: PID control.................................................................................................................................................................................... 8

Page 2, Total 8 Pages Feature ZL-7901A is an industrial intelligent temperature and humidity controller. Optional external SSR to realize bigger heating power rate, and with optional temperature PID control. With touch button and big size LCD display, convenient to operate, easy to set up. Applicable for control of incubator, climate chamber, warehouse, and so on. Main Function 1. Ventilation fan control 2. Door open/close check and control 3. Three temperature control modes: relays up/down limit control, SSR up/down limit control, SSR PID control SSR up/down limit control: is able to set power rate when the room temperature is close to setpoint. 4. Humidify or dehumidify control 5. Timer air exhaust control 6. Timer egg turning control 7. Illumination control 8. Alarm output 9. Auto restart function 10. Temperature/humidity over limit warning and protection 11. Temperature/humidity sensor fault warning and protection Specification ◇ Power supply: 100～240VAC, 50 or 60Hz ◇ Output and input: Output Input Heater control relay 250VAC 7.5A / 1.0A* Resistive load R1 Temperature sensor: NTC, 5K/3470 Ventilation control relay 7.5A / 1.0A* R2 Humidity sensor: ZL-SHr05J Humidity control relay 7.5A R3 Lamp control relay 7.5A R4 Air exhaust control relay 3A R5 Egg turning relay 1A R6/R7 Alarm output relay 1A R8/R9 SSR driver 20mA/10VDC MAX Y+/Y- *. When drive by relay for heater(T10 = 0), the spec. is 7.5A rated current. For tungsten lamp as heater, it is 1.0A! ◇ Setting range: humidity 0 ~ 99% RH, temperature 0 ~ 100℃ ◇ Measuring absolute accuracy before calibration: temperature 1%@25℃, humidity 3%@25℃ ◇ Working environment: -20 ~ 45℃, 10 ~ 90% RH without dewing Product Version When power supplied, the controller will display model and firmware version: ZL-7903A, version 2.7: Key and Display

Page 3, Total 8 Pages Key Key Function Remark Power Keep depressed for 3 seconds to turn online/offline Set Short press to switch between humidity set and temperature set; Long press to set other parameters (see Parameter Table below) + Increase the set value. Keep depressed for fast set - Decrease the set value. Keep depressed for fast set Enter Confirmation Reset Short press for cancel and return; Long press to clear incubating accumulated days counter Lamp Turn the lamp off/on Fn Combination key Display Icon Function On Off Blinking Humidify/dehumidify state Energized De-energized Main heater Energized De-energized Auxiliary heater Energized De-energized Air exhaust Energized De-energized Egg turning motor, turn right Energized De-energized Egg turning motor, turn left Energized De-energized Warning --- No warning Warning E01 Temperature sensor fault Warning No warning E02 Humidity sensor fault Warning No warning tHi Temperature higher than up limit Warning No warning tLo Temperature lower than down limit Warning No warning HHi Humidity higher than up limit Warning No warning HLo Humidity lower than down limit Warning No warning UnL Restore to default parameters Restoring to default parameters dr Door is opened Door open Buzzing Every key press, there will be a beep. When there is error of sensors, high/low limit temperature or humidity warning, there will be buzzing warning. Any key press can stop the warning. Key Operation Fast Set Temperature (T11), Fast Set Humidity (H20) Press to switch between temperature and humidity setting. Press and to set the value. Press to save the setting. Press , or without key operation for 30 seconds, exit the mode, and the set value is not saved. Parameters Setting Keep and depressed simultaneously for 3 seconds. LCD shows “Psd 000”. Press and to enter password (default “000”). Press to confirm. If the password is correct, enter into parameter setting mode, else exit. Press to select parameter code, press and to set the value, press to save the setting. Press , or without key operation for 30 seconds, exit the mode, and the set value is not saved.

Page 4, Total 8 Pages Parameter Table Code Function Range Unit Indication Default T10 Temperature control working mode 0 ~ 2 0: R1 up/down limit control 1: External SSR, up/down limit control 2: External SSR, PID control 0 T11 Temperature set point 0.0 ~ 100.0 ℃/℉ 37.8 T12 Temperature hysteresis for R1 (T10 = 0) 0.0 ~ 20.0 ℃/℉ Relative to T11, absolute value: T11 - T12 0.2 T13 Temperature hysteresis for SSR (T10 = 1) 0.0 ~ 20.0 ℃/℉ Relative to T11, absolute value: T11 - T13 0.3 T14 Min stop time for temperature load (R1) 0 ~ 999 sec 1 T20 Temperature calibration -9.9 ~ +9.9 ℃/℉ 0.0 T21 High temp. alarm relative point 0.0 ~ 65.0/dis ℃/℉ dis: disable warning. Absolute point = T11 + T21 dis T22 Low temp. alarm relative point 0.0 ~ 65.0/dis ℃/℉ dis: disable warning. Absolute point = T11 - T22 dis T25 High temp. protection relative point 0.0 ~ 65.0/dis ℃/℉ dis: disable warning. Absolute point = T11 + T25 Ref.: U20 = 1/2/3, U30 = 1/2/3, U40 = 1/2/3 0.2 T26 Hysteresis for T25 0.0 ~ 65.0 ℃/℉ Absolute point = T11+T25-T26 Ref.: U20 = 1/2/3, U30 = 1/2/3, U40 = 1/2/3 0.1 T30 Proportion of SSR PID 0.1 ~ 5000 Power/℃ Kp for PID 39.3 T31 Integration of SSR PID 0 ~ 5000 sec Ti for PID. If Ti = 0, shut integration. 15.7 T32 Differential of SSR PID 0 ~ 5000 sec Td for PID. If Td =0, shut differential. 40.5 H10 Dehumidify / humidify mode 0 / 1 0: dehumidify, 1: humidify 1 H20 Humidity set point 0 ~ 99 %RH 50 H21 Humidity hysteresis 0 ~ 50 %RH Relative to H20, absolute value: H20 - H21 5 H22 Humidity calibration -9.9 ~ +9.9 %RH 0.0 H23 Minimum stop time for humidity load (R3) 0 ~ 30 min 0 H24 High humidity warning relative point 0 ~ 80/dis %RH dis: disable warning. Absolute point = H20 + H24 dis H25 Low humidity warning relative point 0 ~ 80/dis %RH dis: disable warning. Absolute point = H20 - H25 dis H26 High humidity protection relative point 0 ~ 80/dis %RH dis: disable warning. Absolute point = H20 + H26 Ref.: U20 = 1/2/3, U30 = 1/2/3, U40 = 1/2/3 5 H27 Hysteresis for H26 0 ~ 80 %RH Absolute point = H20-H26-H27 Ref.: U20 = 1/2/3, U30 = 1/2/3, U40 = 1/2/3 2 U10 Left turn (R6) time unit 1 ~ 2 1: minute, 2: hour 1 U11 Left turn (R6) time of the timer 1 ~ 999 120 U12 Right turn (R7) time unit 1 ~ 2 1: minute, 2: hour 1 U13 Right turn (R7) time of the timer 1 ~ 999 120 U14 Turning times 0 ~ 999 0: unlimited turning times 0 U16 Turning motor working mode 0 / 1 0: Either R6 or R7 will be energized. Need position switches, position arrival shuts off the power supply to motor 1: Only energized during turning moment (U17). Manual egg turning support 1 U17 Motor being energized time for every turning 0 ~ 999 sec Effective only when U16 = 1 30 U18 Hatching days 0 ~ 99 day 0: disabled hatching days counting 0 U20 Output R5 (air exhaustion) control mode 0 ~ 3 0: Air exhaust 1: Air exhaust + humi./temp. high limit protection 2: Air exhaust + temperature high limit protection 3: Air exhaust + humidity high limit protection 1 U21 Time unit for air exhaust period (R5) 0 ~ 2 0: second, 1: minute, 2: hour 1 U22 Air exhaust period (R5) 1 ~ 999 30 U23 Time unit for air exhausting time (R5) 0 ~ 2 0: second, 1: minute, 2: hour 0 U24 Air exhausting time (R5) 1 ~ 999 30 U30 Output R4 (Lamp or protection) control mode 0 ~ 3 0: illumination control 1: temperature and humidity high limit protection 2: Temperature high limit protection 3: humidity high limit protection 0 U34 Output R4 delay time for automatic shutdown 1 ~ 999 Min Only effective when U30 = 0 2 U40 Output R8 (alarm or protection) control mode 0 ~ 3 0 = alarm output 1 = temperature and humidity High limit protection 2 = temperature high limit protection 3 = humidity high limit protection 0 U50 Door switch mode 0 / 1 0: Normal close, 1: Normal open 0 U65 Buzzing warning option 0 / 1 0: disable warning, 1: enable warning 1 U90 Password 000 ~ 999 000 = no password 0 U93 PID self auto tune power rate 10 ~ 100 % Percent of heater’s full power rate 50

Page 5, Total 8 Pages Control Function On/offline set Keep depressed for 3 seconds to switch between online and offline. The controlling only works when online. Ventilation Fan (R2) Control When online, ventilation is on. When offline, or door is open, ventilation stops. Door Control (according to door switch S1, optional function) Parameter U50 set the switch control mode: Normal open: U50 = 1: When door is open, the door switch is open. When door is closed, the switch is short inside. Normal close: U50 = 0: When door is closed, the door switch is short inside. When door is open, the switch is open. Factory setting: U50 = 0. In this setting, if without a door switch, the controller thinks the door is closed always. When door is just opened, the lamp will be on for U34 (under setting U30 = 0), even in offline status. When door is just closed, the lamp will be off. When door is open: heater and ventilation are off, egg tray stops. If U16 = 1, manual egg tray control is still effective. When door is closed: heater can work, ventilation is on, egg tray can work automatically. Temperature Control (R1, SSR) R1 control (T10 = 0) If room temperature ≤ (T11 - T12), and R1 has been stopped for T14, R1 will be energized. If room temperature ≥ T11, R1 will be de-energized. External SSR hysteresis control (T10 = 1) If room temperature < T11, SSR will be energized. If room temperature ≥ T11, SSR will be de-energized. SSR power rate: When room temperature < (T11 –T13), SSR output is full power rate. When room temperature ≥ (T11 –T13), SSR output is: U93 * full power rate. Example: if U93 = 50, the power rate is 50% of full power rate. External SSR PID control (T10 = 2) See paragraph Apendix: PID control High temperature protection Protection reaction could be R5, R4 or R8, depends on settings. When room temperature ≥ (T11 + T25), start protecting. When room temperature ≤ (T11 + T25 – T26), stop protecting. Humidity Control (R3) Humidify control (H10 = 1) If room humidity ≤ (H20 – H21), and R3 has stopped for H23, R3 will be energized. If room humidity ≥ H20, R3 will be de-energized. Dehumidify control (H10 = 0) If room humidity ≥ (H20 + H21), and R3 has stopped for H23, R3 will be energized. If room humidity ≤ H20, R3 will be de-energized. High humidity protection Protection reaction could be R5, R4 or R8, depends on settings. When room humidity ≥ (H20 + H26), start protecting. When room humidity ≤ (H20 + H26 – T27), stop protecting. Egg-turning Control (R6, R7) Mode 0 (U16 = 0): Either R6 or R7 will be energized, need position switches, manual turning does not work. When left turning time (U11) arrives, R6 energized, R7 de-energized. When right turning time (U13) arrives, R7 energized, R6 de-energized. Mode 1 (U16 = 1): R6 and R7 is not energized when no turning, manual turning works. When left turning time (U11) arrives, R6 energized for U17. When right turning time (U13) arrives, R7 energized for U17. Manual turning: Keep and depressed simultaneously for 3 second to enter into the mode, R6 and R7 will be de-energized, the display will be flashing; If keep depressed, R6 energized, displayed; If keep depressed, R7 energized, displayed; Keep and depressed simutaneously for 3 sec, or no key operation for 30 sec will exit the mode. Egg turning times: R6 starts once + R7 starts once = turning once. When egg turning times reaches U14, turning will not start any more. If turning times (U14) = 0, turning will never stop.

Page 6, Total 8 Pages Check tray data: Left times of egg turning and time to the next egg turning: When turning times (U14) ≠ 0, the left times of egg turning and time to the next egg turning will display alternatively. When the accumulated times of egg turning ≥ U14, LCD will display “STOP”, there will be no egg turning. Keeping depressed for 3 seconds will reset the accumulated times of egg turning and incubation day counter. When turning times (U14) = 0, the egg turning will never stop. LCD will display time to the next egg turning. Output R5 Control R5 as periodical air exhaustion (U20 = 0) When U22 arrives, R5 is energized. When U24 arrives, R5 is de-energized. R5 as periodical air exhaustion + temperature and humidity high limit protection (U20 = 1) When there is no warning, exhaust air periodically. If room temp. ≥ T11 + T25, or room humidity ≥ H20 + H26, R5 energized. If room temp. ≤ T11 + T25 – T26, and room humidity ≤ H20 + H26 – H27, stop protection. R5 as periodical air exhaust + temperature high limit protection (U20 = 2) When there is no warning, exhaust air periodically. If room temp. ≥ T11 + T25, R5 energized. If room temp. ≤ T11 + T25 – T26, stop protection. R5 as periodical air exhaust + humidity high limit protection (U20 = 3) When there is no warning, exhaust air periodically. If room humidity ≥ H20 + H26, R5 energized. If room humidity ≤ H20 + H26 – H27, stop protection. Output R4 Control R4 as illumination control (U30 = 0) Press to turn the lamp on/off. When the lamp is turned on, it will be off after U34 automatically. Under this setting, When door is opened, R4 will be energized for U34 time. When door is closed, R4 will be de-energized. R4 as Temperature and humidity high limit protection (U30 = 1) If room temp. ≥ T11 + T25, or room humidity ≥ H20 + H26, R4 energized. If room temp. ≤ T11 + T25 – T26, and room humidity ≤ H20 + H26 – H27, stop protection. R4 as Temperature high limit protection (U30 = 2) If room temp. ≥ T11 + T25, R4 energized. If room temp. ≤ T11 + T25 – T26, stop protection. R4 as Humidity high limit protection (U30 = 3) If room humidity ≥ H20 + H26, R4 energized. If room humidity ≤ H20 + H26 – H27, stop protection. Output R8 (R9) Control R8 as alarm output (U40 = 0) R8 will be energized when there is alarming. Alarming definition: see paragraph Alarm R8 as Temperature and humidity high limit protection (U40 = 1) If room temp. ≥ T11 + T25, or room humidity ≥ H20 + H26, R8 energized. If room temp. ≤ T11 + T25 – T26, and room humidity ≤ H20 + H26 – H27, stop protection. R8 as Temperature high limit protection (U40 = 2) If room temp. ≥ T11 + T25, R8 energized. If room temp. ≤ T11 + T25 – T26, stop protection. R8 as Humidity high limit protection (U40 = 3) If room humidity ≥ H20 + H26, R8 energized. If room humidity ≤ H20 + H26 – H27, stop protection. Alarm Alarm temperature and humidity: High temperature alarming, when room temp. ≥ T11 + T21. Low temperature alarming, when room temp. ≤ T11 – T22 High humidity alarming, when room humidity ≥ H20 + H24. Low humidity alarming, when room humidity ≤ H20 – H25 Alarm action When there is alarm: R8 energized (when U40 = 0). Buzzing (could be stopped by any key press). Display the reason table:

Page 7, Total 8 Pages Code Remark Real time detection Delay Duration Reset Action E01 Temperature sensor failure Yes 0 sec 6 sec Auto Alarming, temperature output de-energized, the other control not affected E02 Humidity sensor failure Yes 0 sec 6 sec Auto Alarming, humidity output de-energized, the other control not affected tHi High temperature Yes 0 sec 5 sec Auto Alarming tLo Low temperature Yes 0 sec 5 sec Auto Alarming HHi High humidity Yes 0 sec 5 sec Auto Alarming HLo Low humidity Yes 0 sec 5 sec Auto Alarming dr Door open Yes 0 sec 1 sec Auto Related alarming, temperature output de-energized, ventilation de-energized, humidity control output de-energized, lamp on for U34 (when U30 = 0) iCE Touched IC fault Yes 0 sec 5 sec Auto Auto Restart Function After power supply stops, and comes back, the controller will run under the same settings and status. Incubation Day Counter When controlling, the incubation day counter will keep counting. If the counter value reaches U18, controller keeps controlling as normal, and the counter value will be flashing. If the counter value reaches 99, stop counting. Keeping depressed for 3 seconds will reset the accumulated times of egg turning and incubation day counter. Restore to Factory Default Settings When the controller is online, keep and depressed simultaneously for 3 seconds. The display shows “UnL”. Then press twice, the controller will restore the parameters to factory default settings. Fahrenheit/Celsius display Keep and depressed simultaneously for 3 seconds to switch between Fahrenheit / Celsius display. Manually Checking the Outputs One by One Keep depressed for 3 seconds, LCD displays “CCC”. Then press twice to enter into manual checking mode. Now all outputs are de-energized. Press and to energize R1/R2/R3/R4/R5/R6/R7/SSR in turn. Attention 1. Please read this instruction carefully. Electrical wiring must be manipulated by certified electrician. Wrong wiring may damage the device and system seriously. 2. Avoid humid environment, or with corrosive gases, or strong electric-magnetic field. The device is possible abnormal in such condition. 3. This product has been strictly tested before shipping. The company warranty is one year, the responsibility is limited to the sale of the product itself. Damage caused by improper usage is not covered by the warranty. Wiring Diagram

Page 8, Total 8 Pages Dimension Apendix: PID control Auto Tuning is able to find PID parameters (Kp/Ti/Td, U30/31/32) automatically for most control system 1. Set power rate during auto tuning (U93). 2. Set set-point during auto tuning (SP, T11). When not in set mode, keep and depressed simultaneously for 5 seconds to enter into self auto tuning mode: LCD will display “Pid”. Press to start tuning. Then LCD will display “At”. After the room temperature (PV) reached SP, it will vibrate around SP for several times. The controller will calculate the PID parameters (Kp/Ti/Td, U30/31/32) according to these PV data. And the “At” display disappears. Note: a. PID control, or hysteresis control? Try hysteresis control 1st (T10 = 1): ⚫ Now is full power rate heating. If PV is not able to reach SP within reasonable time, increase heater power rate. ⚫ If PV overshoot to SP ≤ 0.2℃, or over falling to (SP – T12) ≤ 0.2℃: auto tuning is not able to get the PID parameters correctly. ⚫ If all are ok, try PID auto tuning. Try auto tuning (T10 = 2, start auto tuning): Now the heating power rate is U93 percent of the heater’s power rate. Default U93 = 50. If PV is not able to reach SP within reasonable time, increase U93 value, or increase heater power rate. If the overshoot or over falling to SP ≤ 0.2℃, auto tuning is not able to get the PID parameters correctly. The following will also make auto tuning failure, or get wrong PID parameters: ⚫ The PV vibration amplitudes differ too much. ⚫ The PV vibration periods differ too much. ⚫ The PV changes not smoothly (there are temperature interference, like opened door at some moment). b. Try to get best parameters If make 2 auto tuning, the tuned PID parameters are similar, we could use the average data for application. If the 2 tuned data are not similar, auto tuning the 3rd times. When the environment temperature, or object inside (empty box and box with goods inside are not same system), or air flow speed inside changed greatly, it needs auto tuning again. c. About PTC heating element PTC has a Curie point parameter. When PTC’s temperature is high than Curie point, its power rate will be reduced to almost zero, the PID control will fail. With higher Curie PTC heater, with good dissipator for heater, with high air flow speed around heater to avoid the failure. d. Manual tuning principle Manual tuning could revise the control result. Kp = U30, Ti = U31, Td = U32. Increase Kp, increase the speed of control, but more overshoot and bigger vibration. Increase Ti, get more accurate temperature, but need longer time to reach SP after stating heating. Increase Td, fast reaction to control, but add more “noise” to the control result.