Suzhou Lily ZL-7901A User manual

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ZL-7901A Intelligent temperature and humidity controller
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.
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)
Analog quantity input(2 ways)
Main temp. control relay(250VAC/7.5A resistive load)
NTC temperature sensor 5K/3470
Ancillary temp. relay(250VAC/7.5A resistive load)
Humidity sensor SHR04
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)

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Keys and display
Keys
Meaning
Function
Power
Keep press for 3 seconds to turn on/off.
Set
Short press to set humidity and temperature
Extended press to set parameters
+
Extended press to Increase fast
-
Extended press to reduce fast
Enter
Press Enter to confirm parameters
Backup
Press for 3 seconds, Incubation days will cleaned
Light
Turn off/on the light
Fn
To combine with other keys
Display signal indication
Icon
Function
On
Off
Blinking
Humidify/dehumidify state
On
Off
Main heater
On
Off
Ancillary heater
On
Off
Air exchange
On
Off
Egg turning motor right turn
On
Off
Egg turning motor left turn
On
Off
Warning
---
No warning
Warning
E01
Humidity sensor fault
Warning
No warning
E02
Temperature sensor fault
Warning
No warning
tHi
Temperature exceed up limit
Warning
No warning
tLo
Temperature exceed down limit
Warning
No warning
HHi
Humidity exceed up limit
Warning
No warning
HLo
Humidity exceed down limit
Warning
No warning
UnL
Regeneration default values
Regeneration
default values

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Key operation
Temperature/ humidity setting
Press to set temp. and humidity in cycle(blinking), press and to adjust the value.
Press to save parameters.
Press or no operation for 30 seconds, auto exist and not saving parameters.
Parameters
Range
Unit
Default
Up limit set temperature
T24 ~ 100
℃
37.8
Up limit set humidity
H21~100
%
50
System parameters setting
Keep pressing and for 3 seconds to enter parameters setting, LCD shows “Psd 000”, Press and enter
passwords(default “000”) press to confirm. Passwords correct enter parameters setting, wrong passwords exist setting mode.
Press to select parameters code, press and to adjust setting, press to save parameters.
Press or no operation for 30 seconds, auto exist and not saving parameters.
Parameters indication
Code
Function
Range
Unit
Indication
Default
T10
Temperature
control(R1,R2,SSR)
0 ~2
0=Main temp. control(R1)+auxiliary temp.
control(R2)；
1=External SSR main temp. control(up and
down limit temp. control)
2=External SSR main temp. Control(PID
control)
0
T11
Up limit temperature
T12 ~ T23
℃/℉
37.8
T12
Down limit temperature
T24 ~ T11
℃/℉
37.6
T13
Auxiliary temp. Control(R2)
start temperature
T24 ~ T23
℃/℉
37.5
T14
Main temperature control
(R1)mini stop time
0 ~999
sec
1
T15
Auxiliary temperature control
(R2)mini stop time
0 ~999
sec
1
T16
SSR temperature control
mini stop time
0 ~999
sec
1
T20
Temperature correction
-9.9~+9.9
℃/℉
0
T21
High temp. warning
0~100
℃/℉
40
T22
Low temp. warning
0~100
℃/℉
30
T23
Temperature setting up limit
T24 ~ 100
℃/℉
Max temp. Control set limit
40
T24
Temperature down limit
0 ~ T23
℃/℉
Min temp. Control set limit
30
T30
Proportion of PID(SSR
heating)
0.1~5000
PID control parameters
39.3
T31
Integration of PID(SSR
heating)
0~5000
PID control parameters
12.5
T32
Differential of PID(SSR
heating)
0~5000
PID control parameters
318.1
H10
Humidify/ dehumidify set
0 ~1
0=humidify；1=dehumidify
0
H20
Up limit humidity setting
H21~99
%
50

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H21
Down limit humidity setting
0~H20
%
45
H22
Humidity correction
-9.9~+9.9
%
0
H23
Min humidity load stop time
0~ 30
min
3
H24
Humidity up protection limit
0 ~ 100
%
100
H25
Humidity down protection
limit
0 ~ 100
%
0
U10
Left turn (R6) time unit
1~2
1=min；2=hour
1
U11
Left turn (R6) time
1 ~ 999
120
U12
Left turn (R7) time unit
1~2
1=min；2=hour
1
U13
Left turn (R7) time
1 ~ 999
120
U14
Turning times
0 ~ 999
0 = keep turning
0
U15
Hatch days
0~ 999
days
0 = disabled hatch days function
21
U20
Air exchange control
mode(R5)
0~3
0=Air exchange mode
1=Air exchange+humidity/temperature over
limit protection
2=Air exchange+temperature over limit
protection
3=Air exchange+humidity over limit
protection
1
U21
Air exchange period unit(R5)
0 ~2
0=second；1=minute；2=hour
1
U22
Air exchange period
time(R5)
1 ~999
120
U23
Air exchange time unit(R5)
0 ~2
0=second；1=minute；2=hour
1
U24
Air exchange time(R5)
1 ~999
5
U30
Lighting relay function(R4)
0 ~4
0 = illumination control
1 = time switch control
2 = temperature over limit protection
3 = Temperature over limit protection
4 = humidity over limit protection
0
U31
Time period unit(R4)
0 ~2
0=second；1=minute；2=hour
1
U32
Time period time(R4)
1 ~999
120
U33
Time unit(R4)
0 ~2
0=second；1=minute；2=hour
1
U34
Timer time(R4)
1 ~999
5
U40
Alarm relay function(R8,R9)
0 ~4
0 = alarm output(Node)
1 = time switch mode
2 = temperature and humidity over limit
protection
3 = temperature over limit protection
4 = humidity over limit protection
0
U41
Time period unit(R8)
0 ~2
0=second；1=minute；2=hour
1
U42
Time period time(R8)
1 ~999
120
U43
Time unit(R8)
0 ~2
0=second；1=minute；2=hour
1
U44
Timer time(R8)
1 ~999
5

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U90
Passwords
000~999
000 = no passwords
0
End
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. Main temperature control work:
Measuring temperature ≤
【Down limit temperature】
T12, and main temperature control R1 stop time over
【Main temperature control
(R1)mini stop time】T14, main control R1 working.
b Main temperature control off:
Measuring temperature ≥【Up limit temperature】T11, off main temp. Control R1.
c. Auxiliary temp. Control work:
Measuring temperature ≤【Auxiliary temp. Control(R2) start temperature】T13, and auxiliary control R2 stop time over【Auxiliary
temperature control (R2)mini stop time】T15, auxiliary control R2 working.
b Auxiliary temperature control off:
Measuring temperature ≥ 【Auxiliary temp. Control(R2) start temperature】T13 + 0.1 degree, auxiliary control R2 off.
2.External SSR temp. Control up and down limit(T10=1)
Temperature node control mode.
Measuring temperature ≤【Down limit temperature】T12, and SSR temp. Control stop time over【SSR temperature control mini stop
time】T16，SSR is on.
Measuring temperature ≥【Up limit temperature】T11, SSR is off.
3.External SSR PID temperature control(T10=2)
When external SSR main temperature control choose PID mode. Temp. Control will follow PID algorithm.
4. PID procedure:(If with PID control, it is better to tuning the PID parameters, if the default the setting is not ideal.)
a. Be sure that the equipment inside temp. has been cooled to same to environment temp.
b.Press and simultaneously for 5 seconds to enter into tuning set mode. LCD display“Pid tun”,
c.Press start external SSR, output power is locked, is on. Controller start turning PID.
d.After PID turning finished, is off.
e.When the heating temperature over 100℃, controller will end this turning, and display “Pid E03” warning with fail turning(press any
key will cancel E03)
f.If self turning dont finished in 60 minutes, controller will display“Pid E04”warning with fail turning(press any key will cancel E04)
g.Press can cancel warning E03/E04, and restart turning. During turning press can exist.
Humidity control(R3)
Humidify control(H10 = 0)
When measuring humidity ≤【Down limit humidity setting】H21, and humidity load stop time over【Min humidity load stop time】H23,
humidify is on.
When measuring humidity ≥【Up limit humidity setting】H20, humidify is off.
Dehumidify control(H10 = 1)
When measuring humidity ≥【Up limit humidity setting】H20, and humidity load stop time over【Min humidity load stop time】H23,
dehumidify is on.
When measuring humidity ≤【Down limit humidity setting】H21, dehumidify is off.
Egg-turning control(R6, R7)

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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.
Set U14=0, keep turning.
Air exchange control(R5)
Air exchange control mode:(U20=0)
When system running time meet【Air exchange period time(R5)】U22, start air exchange relay. Air exchange time meet【Air exchange
time(R5)】U24, air exchange relay is off.
Air exchange control mode+temperature and humidity over limit protection mode(U20=1)
No temperature/humidity over limit warning, controller work at air exchange mode.
When temperature/humidity over limit warning, high temp. Or high humidity air exchange relay work. When no warning, controller
back to air exchange control mode.
Air exchange mode+temperature over limit protection mode:(U20=2)
No temperature over limit warning, work at air exchange mode.
When temperature over limit warning, high temperature air exchange relay work. When no warning, controller back to air exchange
control mode.
Air exchange mode+humidity over limit protection mode:(U20=3)
No humidity over limit warning, work at air exchange mode.
When humidity over limit warning, high humidity air exchange relay work. When no warning, controller back to air exchange control
mode.
Lighting control(R4)
Lighting control mode(U30=0): press , light on/off.
Time switch mode(U30=1):Time period(U32), R4 off. Timer time(U34), R4 is on.
Temperature and humidity over limit protection mode(U30=2):If temperature or humidity over limit warning, high temperature or high
humidity, R4 is on, when warning stop, R4 is off.
Temperature over limit protection mode(U30=3): If temperature over limit warning, high temperature, R4 is on, when warning stop, R4
is off.
Humidity over limit protection mode(U30=4): If humidity over limit warning, high humidity, R4 is on, when warning stop, R4 is off.
Warning output control(R8, R9)
Warning output mode(U40=0):
Warning node output: R8: Close when failure, open when no failure. R9 Open when failure, closed when no failure.
When temperature or humidity sensor failure, warning output is on, temperature or humidity control output off. Other outputs keep
working.
When temperature or humidity over limit, warning output start, all control outputs keep working.
Timer switch mode(U40=1): Timer period time(U42), R8 is off. Timer time(U44) R8 is on.
Temperature and humidity over limit protection mode(U40=2): temperature or humidity over limit protection, high temperature or high
humidity, R8 is on. When no alarm, R8 closed.
Temperature over limit protection(U40=3): temperature over limit protection, high temperature, R8 is on. When no alarm, R8 closed
Humidity over limit protection mode(U40=2): humidity over limit protection, high humidity, R8 is on. When no alarm, R8 closed.
Auto restart function: Power off, if power back, controller will back to work with previously setting parameters.
Incubation days cancel: keep press for 3 seconds, days will be zero.
Factory setting: controller is on, press and at the same time for 3 seconds shows『UnL』. Than press twice, controller will
restore factory setting.
Fahrenheit temperature/ degrees Celsius switching: press and for 3 seconds.
Manual system adjustment: press for 3 seconds, LCD display”CCC”press twice to enter manual adjustment. Now the LCD
codes display, all outputs stop, press and can turn R1-R7 in turns, SSR is on.
Warning control instruction
No.
Instruction
condition
delay
durati
on
reset
Action

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1
Temperature
sensor faulty
Real time
0s
6s
Auto
Alarm output on, off temperature control, the other
remains.
2
Humidity
sensor faulty
Real time
0s
6s
Auto
Alarm output on, off humidity control, the other
remains.
3
High temp.
Over limit
alarm
Real time
0s
5s
Auto
Alarm output on, high temperature over limit protection
on, the other remains.
4
low temp.
Over limit
alarm
Real time
0s
5s
Auto
Alarm output on, the other remains.
5
High
humidity
Over limit
alarm
Real time
0s
5s
Auto
Alarm output on, high humidity over limit protection
on, the other remains.
6
Low humidity
Over limit
alarm
Real time
0s
5s
Auto
Alarm output on, the other remains.
7
Touched IC
communicatio
n faulty
Real time
0s
5s
Auto
Notes:
1. Read the instruction carefully, Electrical wiring must be manipulated by certified electrician.Wrong power supply may damage the
device and system seriously.
2. Use this product should be avoided in humid environments or with corrosive gases and strong magnetic field applications, in these
occasions may affect the use of the normal operation of the thermostat.
3.This product has been strictly tested before leaving the factory, as a result of quality problems The company warranty for one year, the
responsibility is limited to the sale of the product itself. Damage caused by improper use is not covered by warranty.

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Wiring diagram: