Lilytech ZL-7816A - User Manual

Suzhou Lily Tech. Co., Ltd.
www.suzhoulily.com .cn Page 1. Total 3 pages
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A Humidity and Temperature Controller
Version A1.01a
Specification
Power supply: 12Vac, or 12Vdc
Input: One humidity and temperature sensor, wire length 1.5 meters, system will be
stable when the wire length is up to 50 meters
Sensor precision: Humidity ±3% RH@25℃; Temperature ±1%@25℃
Setting range: Humidity 0.0 ～ 99.9% RH; Temperature 0.0 ～ 80.0℃
Output: Every output ≤ 7A (250Vac, pure resistance)
Working environment: -10 ～ 45℃; ≤ 90% RH without dew
Power consumption: 2W
Display
When the sensor is not connected well, or fails, display shows “--.-“.
When the temperature output is energized, the up LED “out” is on;
When the humidity output is energized, the bottom LED “out” is on.
Setting Operation
Keep〖S〗depressed for 2 seconds to enter into set status:
The up window displays the parameter code.
The bottom window displays the value of the code.
Press〖S〗to select the code: S01->S02->SC1->S03->S04->SC2.
Press〖▲〗or〖▼〗 to set the value (keep depressed make fast set).
Keep〖S〗depressed for 2 seconds to exit, and the settings are saved.
Note: The status will exit if no key operation for 30 seconds, and the settings will be saved.
Code Function Set Range Remark Factory Set
SO1 Temperature output energized 0.0 ～ 99.9℃ Set point for on 22.0
SO2 Temperature output de-energized 0.0 ～ 99.9℃ Set point for off 20.0
SC1 Temperature calibration -5.0 ～ 5.0℃ 0.0
SO3 Humidity output energized 0.0 ～ 99.9% RH Set point for on 10.0
SO4 Humidity output de-energized 0.0 ～ 99.9% RH Set point for off 20.0
SC2 Humidity calibration -5.0 ～ 5.0% RH 0.0
Control Function
Temperature control
If SO1 = SO2, there will be no temperature control function.
If SO1 < SO2, work in heating mode:
When Troom ≤ SO1, temperature output energized;
When Troom ≥ SO2, temperature output de-energized.
If SO1 > SO2, work in cooling mode:
When Troom ≥ SO1, temperature output energized;
When Troom ≤ SO2, temperature output de-energized.

Summary

Controller Specifications

Power Supply Details

Specifies the power input options for the controller, either 12Vac or 12Vdc.

Sensor Input and Precision

Details the sensor type, wire length, and accuracy for humidity and temperature measurements.

Setting Range and Output Capability

Defines the adjustable ranges for humidity and temperature, and the output current capacity.

Operating Environment and Power

Specifies the environmental conditions and power consumption of the controller.

Controller Display and Operation

Display Indicators and Status

Explains how the controller display indicates sensor status and output conditions.

Setting Operation Guide

Provides instructions on how to enter, navigate, modify, and save settings using the controller buttons.

Control Function Logic

Temperature Control Modes

Describes how temperature control functions based on setpoints for heating and cooling.

Advanced Control and Safety

Humidity Control Modes

Explains humidity control logic for humidifying and de-humidifying based on setpoints.

Sensor Calibration Procedures

Details how to calibrate temperature and humidity sensor readings for accuracy.

Important Safety Warnings

Lists critical safety precautions for wiring, environment, and device handling.

Installation Guide

Physical Installation Dimensions

Provides dimensions and visual aids for installing the controller unit.

Electrical Wiring Diagram

Wiring Connections Overview

Illustrates the sensor and load connections for power and control circuits.

Overview

1. Display and Indicators
2. Setting Operation
3. Control Function - Temperature
4. Control Function - Humidity
5. Sensor Calibration
6. Installation and Wiring
7. Safety and Maintenance Features

This document describes the ZL-7816A Humidity and Temperature Controller, Version A1.01a.

The ZL-7816A is designed to control both humidity and temperature based on user-defined set points. It features a single humidity and temperature sensor that is connected to the device. The controller provides two independent outputs: one for temperature control and another for humidity control. Each output is capable of handling a load of up to 7A at 250Vac (pure resistance).

Display and Indicators

The device features two display windows. The upper window typically shows parameter codes during setup, while the bottom window displays the corresponding values. In normal operation, these windows display the current temperature and humidity readings. The controller includes two "out" LEDs. The upper "out" LED illuminates when the temperature output is energized, indicating that the temperature control function is active. Similarly, the bottom "out" LED lights up when the humidity output is energized, signifying active humidity control. In cases where the sensor is not properly connected or has failed, the display will show "--.-" to indicate an error.

Setting Operation

To enter the setting status, the user must press and hold the 'S' button for 2 seconds. Once in setting status, the upper display window will show the parameter code, and the bottom window will show its current value. The 'S' button is used to cycle through the available parameter codes in the following sequence: S01 -> S02 -> SC1 -> S03 -> S04 -> SC2. To adjust the value of a selected parameter, the user can press the '▲' (up) or '▼' (down) buttons. Holding these buttons down will enable a fast-set mode for quicker adjustments. To save the settings and exit the setting status, the 'S' button must be pressed and held for 2 seconds again. If no key operation is detected for 30 seconds, the device will automatically exit the setting status, and the settings will be saved.

Control Function - Temperature

The temperature control function operates based on the values set for S01 (temperature output energized set point) and S02 (temperature output de-energized set point). If S01 is equal to S02, the temperature control function will be inactive. If S01 is less than S02, the device operates in heating mode:

• The temperature output will be energized when the room temperature (Troom) is less than or equal to S01.
• The temperature output will be de-energized when the room temperature (Troom) is greater than or equal to S02. If S01 is greater than S02, the device operates in cooling mode:
• The temperature output will be energized when the room temperature (Troom) is greater than or equal to S01.
• The temperature output will be de-energized when the room temperature (Troom) is less than or equal to S02.

Control Function - Humidity

The humidity control function operates based on the values set for S03 (humidity output energized set point) and S04 (humidity output de-energized set point). If S03 is equal to S04, the humidity control function will be inactive. If S03 is less than S04, the device operates in humidifying mode:

• The humidity output will be energized when the room humidity (room_humidity) is less than or equal to S03.
• The humidity output will be de-energized when the room humidity (room_humidity) is greater than or equal to S04. If S03 is greater than S04, the device operates in de-humidifying mode:
• The humidity output will be energized when the room humidity (room_humidity) is greater than or equal to S03.
• The humidity output will be de-energized when the room humidity (room_humidity) is less than or equal to S04.

Sensor Calibration

The device allows for calibration of both temperature and humidity readings to ensure accuracy. The tolerance of the measured room temperature can be adjusted using the SC1 parameter. The tolerance of the measured room humidity can be adjusted using the SC2 parameter. It is crucial to note that the sensor should not be plugged in or unplugged, nor should other wires be connected, while power is supplied to the device.

Installation and Wiring

The device requires a 12Vac or 12Vdc power supply. It is designed to be installed with a single humidity and temperature sensor, which comes with a 1.5-meter wire. For stable operation, the total wire length for the sensor should not exceed 50 meters. The electrical wiring diagram illustrates the connections for the power supply (12VAC/DC), the T/H Sensor, and the humidity and temperature loads. The loads are typically connected to an AC220V supply. The humidity load connects to the 'NO' (Normally Open) and 'COM' (Common) terminals of the humidity output. The temperature load connects to the 'NO' (Normally Open) and 'COM' (Common) terminals of the temperature output. The 'NC' (Normally Closed) terminals are also available but not used in the standard configuration for energizing the loads.

Safety and Maintenance Features

Several warnings are provided to ensure safe and correct operation:

• Wiring should never be connected when power is supplied to the device.
• All electrical wiring must be performed by a certified electrician.
• Users should carefully read the manual and connect the device according to the provided electrical wiring diagram. Incorrect connections can damage the device.
• The sensor bundle should not be laid out together with the power supply bundle to prevent interference.
• The device should not be operated in erosive, wet, or strong electrical-magnetic field environments, as these conditions can negatively affect its performance.
• The device undergoes a thorough check before shipment. It comes with a one-year warranty, but damage resulting from incorrect usage, such as wrong connections, is not covered by the warranty.

Lilytech ZL-7816A Specifications