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ARTIFICIAL INTELLIGENCE TEMPERATURE 

CONTROLLER

AI-218/2181P User Manual

I. Main features

Designed specially for plastic machinery, food process machinery, packaging 
machinery and so on. Easy to learn and operate and lowest cost.

Universal power supply 100~240VAC.  50/60Hz.C/F selectable.

Freely choose input and output types, modularized ,prompt delivery,best service 

after sale.

Armed with AT and AI PID Intelligent control algorithm function.

Burnt-proof design results in lower power consumption, higher reliability 
and stability. Its power and I/O terminals pass 4KV/5KHz pulse crash proof 
experiment.

Qualifi ed with ISO9001, ISO14001 ,CE,and CQC, satisfying European RoHS 
Standard.

II.   Model Code Symbol

The type of AI-218 is made up of 4 parts:

AI-218

A

G

L0

Part 1 (Series)

Part 2 (Size)

Part 3 (Oupt)

Part 4 (AUX)

Part 1  stands for Model series 

 

AI-218, standard artifi cial intelligence temperature controller 0.3%FS±1

accuracy. 

0.1

 display resolution.

Based on AI-218, AI-2181 is with nPID function.

Part 2  stands for Front panel dimension  

Size

Front Panel

width×height

Cut Out

width×height

Depth Behind

Mounting Surface

A

96×96mm

92×92mm

100mm

A1

96×96mm

92×92mm

70mm

B

160×80mm

152×76mm

100mm

B1

160×80mm

152×76mm

70mm

C

80×160mm

76×152mm

100mm

C1

80×160mm

76×152mm

70mm

D

72×72mm

68×68mm

95mm

D1

48×48mm

45×45mm

78.5mm

D2

48×48mm

45×45mm

95mm

E

48×96mm

45×92mm

100mm

E1

48×96mm

45×92mm

70mm

F

96×48mm

92×45mm

100mm

F1

96×48mm

92×45mm

70mm

Part 3  indicates the module installed in OUTP socket.

   

L   Relay contact output module (Capacity: 2A/250VAC, normal open)
G   SSR voltage output module (30mA/5VDC) 

Part 4  indicates Auxiliary alarm output

N   (or none) no module installed 
L0  Relay contact output module (Capacity: 2A/250VAC, normal open / normal close)
L2   Relay output module omron brand(1A/250VAC)

L5  Dual relay Output module (Capacity: 2A/250VAC, normal open, support AU1 

and AU2 alarm output)

Remark: For D1-size instrument, OUTP (output module) is SSR mounted with 

driving voltage 30mA/5VDC. AU1 is also selectable as relay alarm ouput 

(NO+NC, 2A/250VAC). D1 is not in modular design.

III. 

Technical Specifi cation

1. Input type :

    Thermocouple: K, E, J, N

Resistance temperature detector: Pt100

2. Instrument Input range: 
    

K(0-1300

), S(0-1700

), R(0-1600

), E(0-1000

),J(0-1200

), 

    N(0-1300

),PT100(-200~+800

)

3. Measurement accuracy:  

0.3%FS±1

/0.1

4. Control mode: 

   On-off control mode , or PID control with the function of parameter auto tuning.

5. Output: 

SSR 5VDC/30mA output ,Relay contact output ,open normally

6. Alarm function:

 High Alarm, Lower limit alarm,Deviation High Alarm.

7. Power supply voltage rating: 

100-240VAC, -15%, +10% / 50-60Hz.

8. Power consumption:

 ≤3W.

9. Ambient temperature: 

-10~+60

, Humidity: 0~90RH%

IV. Basic display status

1.Change given Set Value:

When powered on, it shows the basic display status, upper window displays real 
process value (PV) while lower window displays the set value (SV). If the real 
value overruns measure range(thermocouple breaks for example), upper window 

will display "orAL" and the highest and lowest values, at this time, controller will 
automatically stop controlling the output.

In controller's face, basically there are 6~10 LED lights,OP1,AU1,AU2,RUN which 
respectively stand for output, fi rst alarm, second alarm, and working condition. 

2.Change SV setting

In basal display status, if the parameter lock "Loc" isn't locked,  we can set setpoint 

(SV) by pressing 

 

 

 

 .  Press

 

key to decrease the value, 

 

 

key to increase the value, and 

 

key to move to the digit expected to modify.   Max 

parameter of SPL and SPH, is limited to be 0~400C. 

3 AI artifi cial intelligence control and auto tuning:

When AI artifi cial intelligence control method is chosen , the PID parameters can be 

obtained by running auto-tuning.  In basal display status, press   

 

for 2 seconds, 

the "At" parameter will appear.  Press

 

to active the auto-tuning process.  During 

auto tuning, the instrument executes on-off control.  After 2-3 times of on-off action, 
the instrument will obtain the optimal control parameter value.  If you want to escape 
from auto tuning status, press and hold the 

 

key for about 2 seconds until the "At" 

parameter appear again.  Change "At" from "on" to "oFF", press

 

 to confi rm, then 

the auto tuning process will be cancelled.

Note1 : AI-218 is with advanced PID, which makes it high accuracy. 
Note2: If the setpoint is different, the parameters obtained from auto-tuning are 

possible different. So you'd better set setpoint to an often-used value or middle 
value  first,  and  then  start  auto-tuning.  Depending  on  the  system,  the  auto-

tuning time can be from several seconds to several hours.

Note3: Setting of CHYS may have influence on AT.. The lower value of CHYS the 

higher accuracy. But too low CHYS isn't advice, CHYS=2.0 is advice. 

Note4:  At the beginning after AT, the result maybe not table but it will get best result 

after a time.

 2 seconds

auto tuning

V. Parameter Setting:

In basal display status, press     and hold for about 2 seconds can access Field Parameter 
Table.  Pressing  

 

 can go to the next parameter; pressing 

 

 

 

 

  can 

modify a parameter.  Press and hold  

 

 can return to the preceding parameter. Press 

 

(don't  release)  and  then  press 

 

 key simultaneously can escape from the 

parameter table. The instrument will escape auomatically from the parameter table if 

no key is pressed within 30 seconds. Setting Loc=808 and then press 

 

 can access 

System Parameter Table. 

+

 2 seconds

 2 seconds

 Set

VI. Parameters and settings

Field parameter table (Press 

 

 and hold for 2 seconds to access)

Code

Name

Description

Setting 

Range

Default

value

HIAL

High limit 

alarm

Alarm on when PV (Process Value) 

>HIA; alarm off when PV<HIA-AHY

Please refer to AOP description for 

AU1,AU2.

 

-999~

+3000

3000

LoAL Lower limit 

alarm

Alarm on when PV (Process Value) 

<LoA; alarm off when PV>LoA-AHY

In case of electric short, it'll alarm after 

it's second time lower than LoAL.

-999

HdA

Deviation 

high alarm

Alarm on when PV-SV>HdA; alarm 

off when PV-SV<HdA-AHY

When HdAL is max, alarm function is 

null.

3000

LdA Deviation low 

alarm

Alarm on when PV-SV<LdA; alarm off 

when PV-SV>HdA-AHY

When  LdAL  is  minimum,  alarm 

function is null

-999

Loc

Parameter

Lock

Loc=0: Allowed to modify parameters 

and do AT

Loc=1: Allowed to modify parameters 

but cannot AT

Loc=2: Allowed to modify parameters 

and AT

Loc=4-255: NOT allowed to modify 

parameters ecept Loc.

Loc=808, Set to 808 and press

 

,  

allowed modify all parameters

0~255

0

Press 

 can decrease the 

value, press and keep pressing 

it can make quick decrease

Press 

 can increase the 

value, press and keep pressing 

it can make quick increase

Pressc 

 can change the 

targeted digit number of 

value

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