Lily Tech ZL-660A-R User manual

ZL-660A-R E El le ec ct tr ro on ni ic c T Th he er rm mo os st ta at t
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1. Feature
ZL-660A-R is an electronic thermostat, dedicated to control the cold storage, seafood machine,
water heaters, etc.
Front panel water-proof level is IP65. The small case size is same as those on the market.
2. Main Function
● Temperature measurement
● Temperature display
● Temperature calibration
● Cooling/heating working mode
● Delay load output
● Buzzer alarm output
● Max high-temperature or min low-temperature exceed warning.
● Sensor failure warning
● External warning input
● Dry contact alarm output
● RS 485
3. Size Specification
1. Front panel dimension: 78* 34.5mm
2. Drilling template: 71* 29mm
3. Whole machines dimension: 78* 34.5* 71mm
4. Length of sensor(s): 3m (including the sensor probe)
4. Technical Specification
● Temperature Sensor: NTC
● Setting Range: -40～120℃
● Display Range: -50～130℃
● Working Temperature: -10～45℃
● Storage Temperature: -30～70℃
● Humidity: 5～85%RH (without dewing)
● Power Supply: AC185 ~ 245V 50HZ
● Terminal Wire: <= 2 * 1.5mm2 or 1 * 2.5mm2
● Load Current: 10A 250Vac（Resistive load）
● Case: PC + ABS Fire Proof
● Protection Degree: IP65 (front panel)

5. Operation Instruction
5.1 Display Indication
Display Sign Description
Icon Function On Off Blinking
Load On Off Being delay load output
Cooling TEMP. Setting
In the setting state ---- ----
HACCP Heating TEMP. Setting In the setting state
---- ----
Repairing Faulty No fault ----
Warning Warning No warning ----
Panel Digit Indication
Four red digits display the measured temperature and warning code.
No. Display Code Warning Information
1 E01 Room temperature sensor fault
( short circuit or open circuit )
2 Hi Temperature exceeds the MAX value
3 Lo Temperature exceeds the MIN value
4 EE Data access error
5 Err Password error
6 iA External warning
7 UnL Restore the default password ”1111”
6.2 Keypad Operation
6.2.1 Set coo/heat temperature
Keeping 【S】 pressed for 3 seconds to enter temperature setting mode. The indicator
or “HACCP”is on, and the digital shows the set temperature. Press key 【▲】 or
【▼】 to change the set temperature ( Keeping 【▲】 or 【▼】 pressed, it will be adjusted
quickly.). Press 【S】, the set temperature will be saved and leave the setting mode. Or do not
press any key for 30 seconds; the device will leave the set mode without saving the set data.
6.2.2 Set system parameters
Enter Into System Parameter Setting Mode
Use the password to enter into the parameter setting mode, the factory password is “1111”.
Keep 【P】 pressed for 3 seconds to enter the mode. The digital displays 『---0』, then press
【▼】 to the digit of the password, press 【▲】 to the value of the digit, press 【S】 to
confirm. If the password is wrong, it will shows 『Err』, and returns to the measuring
temperature states after the buzzer beeping 3 times. If the password is right, the buzzer beeps

once and enters into the mode. Digital will display a parameter code『U10』. Press 【▲】
or 【▼】 to select the parameter code. Press 【S】 to show its value. Press 【▲】 or 【▼】
to set the value. Press【S】 to return parameter code display status.
Exit the Mode
Keep depressing 【P】 for 3 seconds, the set parameters will be saved, the mode exits.
If do not press any key for 30 seconds, the mode will exit without saving all the set data.
6.3 Parameter Code and Description Table:
No
Parameter
code Function Range Note Factory setting
1 U10 Load power on delay time 1～100min 3
2 U11 Load MIN continuous work time 0～100min 3
3 U12 Load run frequency 0～8 0: Disable 5
4 U20 Room temperature sensor calibration
-9.9～+9.9 0
5 U22 Temperature difference 0.1～+10.0℃ The hysteresis
of control 1.0
6 U50 High-temperature warning deviation
value to Max Temp 0~60℃ 0: Disable 0
7 U51 Low-temperature warning deviation
value to Min Temp 0~60℃ 0: Disable 0
8 U52 Over-temperature warning delay
time 1～180min 30
9 U53 First over-temperature warning
delay time after power supply 0~180 hour 0: Disable 2
10 U60 External input warning mode 0~4
0:Warning off
1:On, Lock
2:On, Unlock
3:Off, Lock
4:Off, Unlock
0
11 U61 External warning input delay 0~120min 0
12 U62 Buzzer warning 0~1 0:Warning off
1:Warning on
13 U90 Working mode CO: Cool;
HE: Heat CO
14 U97 Baud rate setting 0 ~ 3
0: 2400bps
1: 4800bps
2: 9600bps
3: 19200bps
3
15 U98 Device address 1 ~ 99 ---- 1
16 U99 Password 0000~9999 1111
17 End Finished setting

7. Control Function Description
7.1 Load Control
Cooling Mode
● When the temperature “Set temperature”+”U22”, and the load has stopped for “U10”, ≧
the load starts.
● When the temperature “Set temperature”≦-”U22”, and the load has run for “U11”, the
load stops.
For example:
If set temperature is 18℃，【U22】is 2 . When the temperature 20 , compressor starts. If ℃ ≧ ℃
the temperature 16≦ ℃，compressor stops. The room temperature will be between 18±2 .℃
Heating Mode
● When the temperature “Set temperature”≦-”U22”, and the load has stopped for “U11”, the
load starts.
● When the temperature “Set temperature”+”U22”, and the load has ≧run for “U10”, the
load stops.
For example:
If set temperature is 18℃，【U22】is 2 . If the temperature 16℃ ≦ ℃，compressor starts. If the
temperature 20 , com≧ ℃ pressor stops. The room temperature will be between 18±2 .℃
7.2 Delay Load Output
● After power supply, the load is able to start only after the time (U10) has passed.
● After the load stops, it is able to restart again only after the time (U10) has passed.
● After the load starts, it is able to stop only after the time (U11) has passed.
7.3 Protection Running Mode When Room Temperature Sensor Fails
When the room temperature sensor fails, the system will automatically run into the protected
running mode. In this mode, the compressor will run and stop with the period of 30 minutes.
Compressor works for U12* 3 minutes, stops for ﹛30 - (U12* 3) ﹜minutes.
For example: Set 【U12】 is 3，when the temperature sensor fails，compressor runs for 9
minutes and then stops 21 minutes, move in circles. If U12=0, system stops when sensor fails
7.4 Buzzer Function
Buzzer sounds shortly for every key press. When confirming the parameter setting, it sounds
longer. 3 short beeps means invalid. When the system comes wrong or external alarm input,
the buzzer alarm function will be off if U62=0, or the buzzer continuous alarming if U62=1.
After the system problem solved and disappears, press 【P】 key to stop warning.
7.5 High-temperature and Low-temperature Warning
● When the room temperature ≥ “set temperature”+ “U50”, and the time reaches to “U52 or
U53 or U34”, high temperature warning starts.
● When the test temperature ≦“set temperature”+ “U51”, and the time reaches to “U52 or
U53 or U34”, low temperature warning starts.
7.6 Dry Contact Alarm Output
When the sensor fails, high/low temperature warns, or external warning input, the dry contact
relay opens and dry contact alarm outputs.
7.7 External Input Warning

There are following ways for the external warning input, when the condition meets, the
device will warn:
Normal On: If close, warning starts.
Normal Off: If open, warning starts.
Lock: when the external warning input signal disappears, system keeps warning, until
pressing the【P】key to stop the warning.
Unlock: when the external warning input signal disappears, warning stops.
7.8 Temperature Calibration Function
When there is tolerance between the measured temperature and real temperature, set
parameter U20 and U21 to calibrate. The calibration range is ±9.9℃. When setting the
parameter, the step is 0.1℃ for every key press. Keep the key pressed, the set data will
increase/decrease continuously and quickly.
7.9 Restore the Default Parameters and Password
Keep【P】and 【▲】keys pressed for 5 seconds, the device displays “UnL”, press 【▼】 twice,
buzzer sounds, system auto restores the default parameters and password“1111”.
8. Controller Installation
8.1 Warning
Avoid installing the device in the following environment:
● Relative humidity is greater than 90%, or possibly dewing.
● Strong vibration.
● Possibility be dropped, or within fog.
● Exposed to eroding and polluting gases (such as: air containing sulfur and ammonia, salty
fog, smoky mist) to prevent erosion and oxidation.
● Ambient containing explosive or inflammable materials/gases.
8.2 Installation Procedure
Insert the controller into hole (step one) Slide the bracket to fix the device (step two)
9. Electrical Connection
Warning
● Electrical wiring must be manipulated by certified electrician.
● Wrong power supply may damage the device and system seriously.
● Try with effort to layout the sensors and switches line apart from inductive load lines and

power supply lines. The sensors and switches lines are not allowed go with the power supply
lines and inductive load lines in a same pipeline, and are not allowed to pass near the
contactor, breaker and the similar.
● Reduce the length of sensors’ wiring as possible, avoid forming a spiral shape near the
power devices.
● Avoid direct contact with the internal electronic components.
● After finish and check the electrical wiring layout, before connect them to the device,
please follow this instruction: Pay attention the “electrical wiring diagram” below, wrong
connection possibly damages the device and the system, and may be dangerous to the user.
All security and protecting device for the equipments are necessary. They are very important
to protect the equipments, and the user’s safety.
Electrical wiring diagram