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Feature
ZL-7901A is an industrial intelligent temperature and humidity controller. It can connect SSR expire output and adopt PID to
control temp with high precision. It use easy touched button and big LCD display, convenient operation and easy installation.
Applicable for control of incubator, climate chamber, warehouse, and so on.
Main function
1.Temperature control, three combination output, PID high precision control is chosen.
2.Humidify and dehumidify control
3.Time air exchange control
4.Time egg turning control
5.Illumination control
6.Node alarm output
7.Auto restart function
8.Temperature/humidity over limit warning and protection function
9.Temperature/humidity sensor fault warning and protection function
Specification
◇Power supply: 100-240V, 50-60Hz
◇Controller:
Relay output(8 ways)
Main temp. control relay(250VAC/7.5A resistive load)
Ancillary temp. relay(250VAC/7.5A resistive load)
Humidity control relay(250VAC/7.5A resistive load)
Lamp relay(250VAC/7.5A resistive load)
Air exchange relay(250VAC/7.5A resistive load)
Egg turning relay(250VAC/7.5A resistive load)
Alarm output relay(250VAC/7.5A resistive load)
SSR（20mA/10VDC MAX）
◇Setting range: humidity 0～100RH, temperature 0～100℃
◇Measuring accuracy: temperature 1%, humidity 5%
◇Working environment: -20～45℃,10～90RH no dewing
◇Size: 137*89*56(mm)
◇Hole size:122*75(mm)
ZL-7901A Intelligent temperature and humidity controller
Instruction Manual A1.0
Analog quantity input(2 ways)
NTC temperature sensor 5K/3470
Humidity sensor SHR04
1
Suzhou Lily Tech CO., Ltd.
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Table of Contents
Summary of Contents for Suzhou Lily ZL-7901A
- Page 1 Instruction Manual A1.0 Feature ZL-7901A is an industrial intelligent temperature and humidity controller. It can connect SSR expire output and adopt PID to control temp with high precision. It use easy touched button and big LCD display, convenient operation and easy installation.
- Page 2 Suzhou Lily Tech CO., Ltd. Keys and display Keys Meaning Function Power Keep press for 3 seconds to turn on/off. Short press to set humidity and temperature Extended press to set parameters Extended press to Increase fast Extended press to reduce fast...
- Page 3 Suzhou Lily Tech CO., Ltd. Key operation Temperature/ humidity setting Press to set temp. and humidity in cycle(blinking), press to adjust the value. Press to save parameters. Press or no operation for 30 seconds, auto exist and not saving parameters.
- Page 4 Suzhou Lily Tech CO., Ltd. Down limit humidity setting 0~H20 Humidity correction -9.9~+9.9 Min humidity load stop time 0~ 30 Humidity up protection limit 0 ~ 100 Humidity down protection 0 ~ 100 limit Left turn (R6) time unit 1=min；2=hour...
- Page 5 Suzhou Lily Tech CO., Ltd. Passwords 000~999 000 = no passwords Control function On/off: Controller is off, press for 3 seconds, controller working. Controller is on, press for 3 seconds, controller off. Temperature control 1.Main control(R1)+Auxiliary control(R2) (T10 = 0) a.
- Page 6 Suzhou Lily Tech CO., Ltd. Left turning time meet, R6 start, R7 is off. Right turning time meet, R7 start, R6 is off. Egg turning cycle times: R6 start once+R7 start once as a cycle, when egg turning times=U14, stop turning.
- Page 7 Suzhou Lily Tech CO., Ltd. Temperature Alarm output on, off temperature control, the other Real time Auto sensor faulty remains. Humidity Alarm output on, off humidity control, the other Real time Auto sensor faulty remains. High temp. Alarm output on, high temperature over limit protection...
- Page 8 Suzhou Lily Tech CO., Ltd. Wiring diagram:...
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Questions and answers
How to use this model to the green house for cultivation
To use the Suzhou Lily ZL-7901A temperature and humidity controller for greenhouse cultivation, follow these steps:
1. Installation and Power:
- Connect the controller to a 100–240V, 50–60Hz power source.
- Install the temperature sensor (NTC 5K/3470) and humidity sensor (SHR04) in the greenhouse.
2. Set Control Parameters:
- Press the “Set” button to enter temperature and humidity settings.
- Use “+” and “–” keys to adjust values.
- Use “Enter” to confirm.
3. Temperature Control:
- Set main temperature control mode (T10). For PID control, choose value 2.
- Define temperature range using T11 (upper limit) and T12 (lower limit).
- Use T21 and T22 to set high and low temperature warnings.
4. Humidity Control:
- Set humidify or dehumidify mode (H10): 0 = humidify, 1 = dehumidify.
- Set humidity range using H20 (upper limit) and H21 (lower limit).
- Use H22 for humidity correction if needed.
5. Air Exchange:
- Set air exchange control and protection modes (U20).
- U20 = 2 for temperature over-limit air exchange.
- U20 = 3 for humidity over-limit air exchange.
6. Lighting Control:
- Choose lighting control mode (U30).
- U30 = 0 for manual control, = 1 for timer, = 2–4 for automatic based on temperature/humidity limits.
7. Alarms and Protection:
- Set warning output mode (U40) for sensor failures or over-limit conditions.
- Configure R8 and R9 relays to respond to warnings.
8. Start Operation:
- Press and hold the “Power” button for 3 seconds to turn on.
- Monitor the LCD display for status and readings.
This setup allows automated control of temperature, humidity, lighting, and air exchange, suitable for greenhouse environments.
This answer is automatically generated