Yudian AI-518 Technical manual

Yudian (H.K.) Automation Technology Co. Ltd.
Website: http://www.yudian.us http://www.yudian.com.hk
Email: [e-mail]
Tel: [phone] Fax: [phone]
AI -518/ A I -518P
ARTIFICIAL INTELLIGENCE INDUSTRIAL CONTROLLER
Operation Instruction
Ver. 7.1
(Applicable for accurate controls of
Temperature, Pressure, Flow, Level and Humidity etc.)

CONTENTS
1. SUMMARY.............................................................................................................................................................. 1
1.1 MAIN FEATURES 1
1.2 ORDERING CODE DEFIN ITION 2
1.3MODULES 5
1.3.1 Slots of modules 5
1.3.2 Commonly used modules: 6
1.3.3 Installation and replacement of modules 7
1.3.4 Electric isolation of the modules 8
1.3.5 Further descriptions about module applications 8
1.4 TECHNICALSPECIFICATION 10
1.5 REAR TE R M I N A L LAYOUT AND WI R I N G 13
2. DISPLAYS AND OPERATIONS...........................................................................................................................17

2.1 FRONT PA N E L DESCRIPTION 17
2.2 PARAM ETER SETTING FL O W CH A R T 19
2.3 OPERATION DESCRIPTION 20
2.3.1 Set Value Setting 20
2.3.2 Parameter Setting 20
2.3.3 Auto Tuning 21
3. PARAMETERS AND SETTINGS.........................................................................................................................23
3.1 PARAM ETER LOC K (LOC)AND FI E L D PAR AMETERS 23
3.2 THE ENTIRE PAR A METE R TA B LE 24
3.3 ADDITIONAL REM ARKS OF SP E C I A L FUNCTIONS 42
3.3.1 Single-phase phase-shift trigger output 42
3.3.2 Alarm blocking at the beginning of power on 42
3.3.3 Setpoints switch 43

3.3.4 Communication function 43
3.3.5 Temperature re-transmitter / set current output 44

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1. SUM M AR Y
1.1 Main Features
Adopt digital calibration technology for input measurement with input measurement accuracy 0.3% F.S.,
non-linear calibration tables for standard thermocouples and RTDs are available in the instrument.
Adopt advanced artificial intelligence control algorithm, no overshoot and with the function of auto tuning ( A T )
and self-adaptation.
Adopt advanced modular structure, conveniently providing plentiful output options, able to satisfy the
requirements of various applications, make quick delivery and convenience the maintenance of the instrument.
Friendly and customized operating interface leads to easy learning and simple manipulation. parameter can be
promoted to immediate operator access in Field Parameter Table or password protected in Full Parameter
Table.
With worldwide power supply of 100-240VAC or24VDC and various installation dimensions for users to choose.
ISO9001 and CE certified, achieving world class level of quality, anti-interference ability and safety.
POINTS FOR ATTENTION
●This manual introduces AI-518/AI-518P ARTIFICIAL INTELLIGENCE INDUSTRIAL CONTROLLER of Version
8.0. Certain functions introduced by this manual are probably not applicable for the instrument of other version.
When power on, instrument’s model and software version will be displayed. User should pay attention to the

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difference between different versions when using the instrument. Please read this manual carefully in order to
use the instrument correctly and make it to its full use.
●Please correctly set parameters according to input / output type and function. Only correctly wired instruments
with parameters correctly set can be put into use.
1.2 Ordering Code Definition
Advanced modularized hardware design is utilized for AI series instruments. There are maximum five module slots:
multi-function input/output (MIO), main output (OUTP), alarm (ALM), auxiliary output (AUX) and communication
(COMM). The modules can be purchased together with or separately from the instrument, and can be assembled
freely. The input type can be freely set to thermocouple, RTD, or linear current/voltage.
The ordering code o f A I -518 series instrument is made up of 9 parts . For example:
AI-518 A (F2) N X3 L5 N S4 —24VDC
①②③④⑤⑥⑦⑧⑨
It shows that the model of this instrument is AI-518, front panel dimension is 96×96mm, an extended input type (F2
radiation type pyrometer) is available, no module is installed in MIO (Multi-function I/O) slot, X3 linear current output
module is installed in OUTP (main output), ALM (alarm) is L5 (dual relay contact output module), no module is
installed in AUX (auxiliary output), a RS485 communication interface with photoelectric isolation is installed, and the

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power supply of the instrument is 24VDC.
The following is the meanings of the 9 parts:
①Shows the model of the instrument
AI-518 economical type instrument with measurement accuracy 0.3%F.S. It adopts artificial intelligent control
technology, and has the functions of control, alarm, retransmission and communication.
②shows the front panel dimension.
A(A2) front panel 96×96mm(width×height), cut out 92×92mm, depth behind mounting surface 100mm. A2
has a light bar with 25 segments and 4 levels of luminosity.
Bfront panel 160×80mm(width×height), cut out 152×76mm, depth behind mounting surface 100mm.
C(C3) front panel 80×160mm(width×height), cut out 76×152mm, depth behind mounting surface 100mm.
C3 has an additional light bar with 50 segments and 2 levels of luminosity .
Dfront panel 72×72mm(width×height), cut out 68×68mm, depth behind mounting surface 95mm
D2 front panel 48×48mm(width×height), cut out 45×45mm, depth behind mounting surface 95mm`
Efront panel 48×96mm(width×height), cut out 45×92mm, depth behind mounting surface 100mm
Ffront panel 96×48mm(width×height), cut out 92×45mm, depth behind mounting surface 100mm
③shows the optional extended graduation spec (If none, leave it blank). AI-518 series instruments
support many input types including popular thermocouples, RTDs, linear voltage, current and resistance
inputs. If needed, an additional specification not mentioned in input type selection (InP) table can be
extended.

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④shows the module type of multiple function I/O (MIO). Selectable modules are I2, I4, K3 andV.N
means none, no module installed.
⑤shows the module type of main output (OUTP). Selectable modules are L1, L4, W1, W2, G, K1, K3, K5,
X3, X5 etc.
⑥shows the module type of alarm (ALM). Selectable modules are L1, L2, L4, L5, W1, W2, G, etc.
⑦shows the module type of auxiliary output (AUX). Selectable modules are L1, L2, L4, L5, W1, W2, G, K1,
X3, X5, etc.
⑧shows the module type of communication (COMM). Selectable modules are S, S4, V, etc.
⑨shows the power supply of the instrument. If left blank, the power of the instrument is 100-240VAC.
"24VDC" means the power supply of 24V direct current.
Note 1: The instrument applies the technology of automatic zero and digital calibration, and is free of maintenance.
If the error exceeds certain range, generally, cleaning and drying the inside of the instrument can fix it. If not, send
the instrument back to the factory to examine and repair.
Note 2: Free repair and maintenance will be given in 3 years since the delivery. In order to get full and correct repa i r ,
write the phenomena and causes of the malfunction of the instrument.

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1.3 Modules
1.3.1 Slots of modules
AI-518 series instruments have five slots for modules to be installed (D dimension instruments have 3 slots:
OUTP, AUX and COMM/AL1; D2 dimension instruments have 2 slots: OUTPand COMM/AUX). By installing different
modules, the controller can meet the requirements of different functions and output types.
Multiple function Input/Output (MIO): can input signal from 2-wire transmitter or 4-2 0 m A signal by installing I4
(current input) module. If a I2 (on-off signal input) module is installed, the instrument can switch between
setpoints SV1 and SV2 by an external switch. Cooperating with OUTP and installing a K3 module can realize
three-phase thyristor zero cross triggering output.
Main output (OUTP): is commonly used as control output such as on-off control, standard PID control, and AI
PID control. It can be also used as retransmission output of process value (PV) or setpoint (SV). Installing L1
or L4 modular can realize relay contact output; installing X3 or X5 module can realize 0-20mA/4-20mA/0-1 0 m A
linear current output; installing G module can realize SSR voltage output; installing W1 or W2 module can
implementTRIAC no contact switch output.

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Alarm (ALM): is commonly used to be alarm output. Support 1 normally open + normally close relay output
(AL1) by installing L1 or L2 module or 2 normally open relay outputs (AL1+AL2) by installing L5 module.
Auxiliary output (AUX): In a heating/refrigerating dual output system, module X3, X5, L1, L4, G, W1, W2 can be
installed for the second control output. It can also output alarm by installing L1, L2 or L5 module, or be used for
communicating with computer by installing R module (RS232C interface).
Communication Interface (COMM): Module S or S4 can be installed in for communicating with computer
(RS485 communication interface), and it can also be used as power supply for external sensor when equipped
with a voltage output module.
1.3.2 Commonly used modules:
N(or null) no module installed
L2 normally open + normally close relay output module (small volume, capacity: 30VDC/1A, 250VAC/1A, suitable for
alarm)
L1/L4 Large capacity normally open relay output module (large volume, Capacity: 30VDC/2A, 250VAC/2A)
L5 Dual normally open relay output module (Capacity: 30VDC/2A, 250VAC/2A)
W1/W2 TRIAC no contact normally open (W2 is normally close) discrete output module (Capacity:
100-240VAC/0.2A)
GSSR voltage output module (DC12V/30mAtime proportionaloutput)
K1 Single-phase thyristor zero crossing trigger output module (can trigger one loop of a TRIAC or a pair of inverse
parallel SCR with current of 5-500A)

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K3 Three-phase thyristor zero crossing trigger output module (can trigger 3-phase circuit; each loop can trigger
TRIAC or a pair of inverse parallel SCR with current of 5-500A)
K5 Single-phase thyristor phase-shift trigger output module (can trigger one loop of TRIAC or a pair of inverse
parallel SCR with current of 5-500A)
X3/X5 Linear current output module (continuous 0-22mA output, selectable in the range of 0-10mA, 4-20mA etc.).
X5 is equipped with photoelectric isolated power supply.
S/S4 RS485 communication interface module. S4 is equipped with photoelectric isolated power supply.
V24/V12/V10 Isolated 24V/12V/10V DC voltage output with maximum current of 50mA, can supply power for
transmitter.
I2 Switch / frequency signal input interface for inputting external switch or frequency signal, has a 12VDC power
supply for external transducer.
I4 4-20mA/0-20mAanalogue input interface, has a 24VDC/24mApower supply for a transmitter.
1.3.3 Installation and replacement of modules
Before the instrument delivery, module installation is done on request, with corresponding parameter set correctly.
Users can replace or install modules by themselves when needed. When replacing a module, you should pull the
controller out of the housing at first, insert a small flat-tip screwdriver into the opening between the original module
and the slot on motherboard to remove the old module, and then install a new module. Changing module type needs
to modify the corresponding parameters.

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1.3.4 Electric isolation of the modules
There are a group of 24V and a group 12V power supply built in the instrument and isolated to the main circuit. The
24V power commonly supplies voltage output module, such as V24/V12/V10, I2 and I4. The 12V power is commonly
supplies output or communication module. Generally, the relay contact output and TRIAC no contact discrete output
are self insulated from the other circuit, no matter whether other modules are installed or not. SSR voltage output do
not need to be insulated from input circuit, because SSR itself has isolation function. Therefore, only the electric
isolation between the communication interface and the current output should be considered. Those modules, for
example, S (RS485 communication interface), R (RS232 communication interface) and X3 (linear current output), all
need the 12V power supply. If more than one of the above modules are installed, in order to be electric isolated, only
one of them can be module without electric isolation, the other modules should be S4 or X4, which has its own
isolated power supply. For example, if an X module is installed in OUTP (main output) slot, and an S or X module is
installed in COMM (communication interface) slot, then OUTP and COMM can not be electric isolated, so S or X
should be replaced with S4 or X4.
1.3.5 Further descriptions about module applications
Voltage output module: The voltage output modules like V24, \/10 or V12 are often used for supplying power
for external transducer or feedback resistance of transmitter. These modules can be installed in any slot. To
standardize the wiring, it is recommended to be installed in the first idle slot in the order of MIO, AUX, and
COMM.
No contact switch module : W1 and W2 are new types of no contact switch module which apply the advanced

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technology of “burn proof” and zero crossing conduction. It can replace the relay contact switch. Compared to
the relay contact output module,W1 and W2 have longer life and lower interference. They can largely lower the
interference spark of the equipment, and greatly improve the stability and reliability of the system. Since the
driver element is TRIAC, it is suitable for controlling 100-240VAC (not for DC power) with current up to 80A. For
the current larger than 80A, an intermediate relay is needed.
Relay Switch Module : the relay modules are widely used in industrial control. However, they are the only
modules with life time limit and volume limit and have much electromagnetic interference. It is important to
choose a suitable relay module. To control equipments with 220VAC supply, such as contactor and
electromagnetic valve, W1 module is recommended. To control DC or AC below 100V, users can only use relay
module. L2 module is small, and both its normal open and normal close terminals have the function of varistor
spark absorption, but the capacity is small. It is suitable for alarm output. L1 and L5 have big volume and big
capacity. In the 48mm dimension instrument (for example, D2, E, F and E5), only one of L1 or L5 can be
installed. L5 has dual output, can be used to support two loops of alarm, for example, AL1+AL2. If you don’t
like mechanical switch, you can choose G5 (dual SSR voltage driver) and connect with external SSR instead.

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1.4 TECHNICAL SPECIFICATION
Input type: (Either of below specifications can be used selectively in the same instrument)
Thermocouple: K, S, E, J, T , N
Resistance temperature detector: Cu50, Pt100
Linear voltage: 0～5V, 1～5 V , 0 ～1V, 0～100mV, 0～20mV, etc.
Linear current (external precise shunt resist needed): 0～10mA,0～20mA, 4～20mA, etc.
Extended input (install I4 module in MIO) : 0～20mA, 4～20mAor two line transmitter.
Optional: apart from the above-mentioned Input type, an additional type can be provided upon request.
(Graduation index is needed)
Instrument Input range
K(-50～1300℃), S(-50～1700℃), T(-100~+350℃), E(0～800℃), J(0～1000℃), N(0～1300℃)
Cu50(-50～+150℃), Pt100(-200～+600℃)
Linear Input: -1999～+9999 defined by user
Measurement accuracy : 0.3%FS
Resolution : 0.1℃for K, E, T, N, J, Cu50, Pt100; 1℃for S

1 1
Response time : ≤0.5s ( when digital filter parameter dL=0)
Control mode:
On-off control mode (deadband adjustable)
Standard PID with auto tuning
AI PID with auto tuning, adopting artificial intelligence algorithm.
Output mode (modularized)
Relay output (NO+NC):250VAC/2Aor 30VDC/1A
TRIAC no contact discrete output (NO or NC): 100～240VAC/0.2A (continuous), 2A (20mS instantaneous,
repeat period≥5s)
SSR Voltage output: 12VDC/30mA(used to drive SSR).
Thyristor zero crossing trigger output: can trigger TRIAC of 5～500A, a pair of inverse paralleled SCRs or
SCR power module.
Linear current output: 0～20mA, 4～20mA (Output voltage ≥11V, maximum load resistor 500ohm, output
precision 0.2%FS)
Electromagnetic compatibility (EMC): ±4KV/5KHz according to IEC61000-4-4; 4KV according to
IEC61000-4-5.
Isolation withstanding voltage : between power, relay contact or signal terminals ≥2300VDC; between
isolated electroweak terminals ≥600VDC
Power supply : 100～240VAC, -15%, +10% / 50-60Hz; 120～240VDC; or 24VDC/AC, -15%, +10%.

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Power consumption: ≤5W
Operating Ambient : temperature 0～50℃; humidity ≤90%RH
Front panel dimension: 96×96mm, 160×80mm, 80×160mm, 48×96mm, 96×48mm, 48×48mm, 72×72mm
Panel cutout dimension: 92×92mm, 152×76mm, 76×152mm, 45×92mm, 92×45mm, 45×45mm, 68×68mm
Depth behind mounting surface: 100mm

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1.5 Rear Terminal Layout and Wiring
Wiring graph for instruments except D and D2 dimension.
Note 1: For linear voltage input, if the range is
below 500mV, connect to terminals 19 and 18.
0～5V or 1～5V signal can be inputted from
terminals 17 and 18.
Note 2: 4～20mA linear current signal can
change to 1～5V voltage signal by connecting
a 250 ohm resistor, and then be inputted from
terminals 17 and 18. If I4 module is installed
in MIO slot, 4～20mA signal can be inputted
from terminals 14+ and 15-, and 2-wire
transmitter can be inputted from terminals 16+
and 14-.
Note 3: The compensation wires for different
kinds of thermocouple are different, and
The graph suits for upright instruments
with dimension A or E
For instruments with dimension F,
just clockwise rotate the graph 90
degree, and the numbers of the
terminals keep the same.
AU1
M2/MIO
AUX
ALM
COMM
AL2
1
2
3
4
5
6
7
8
9
10
11
12
15
16
17
18
19
20
13
14
AL1
AU2
COM
COM
N/O
N/C
N/O
N/O
+
+
A
B
+
100-240VAC~
+
+
OUTP
COM
COM
N/O
N/C
N/O
N/O
COM
COM
N/O
N/O
N/O
N/C
+
+
OP2
OP1
+
0-5V
1-5V
G1
G2
G1
G2
G1
G2
Thyristor trigger output（K1/K3）
Thyristor trigger output（K3）
Thyristor trigger outuput（K3）
+
COM
N/C
V+
N/O
+
+
+

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should be directly connect to the terminals. When the internal auto compensation mode is used, connecting the
common wire between the compensation wire and the terminals will cause measurement error.
Wiring graph of D dimension instruments (72×72mm)
Note 1: Linear voltage signal of range below 500mV
should be inputted from terminals 13 and 12, and
signal of 0～5V and 1～5V should be inputted from
terminals 11 and 12.
Note 2: 4 ～20mA linear current signal can be
converted to 1～5V voltage signal by connecting a
250 ohm resistor and inputted from terminals 11 and
12.
Note 3: S or S4 module can be installed in COMM slot
for communication. If relay, TRIAC no contact switch,
or SSR driver voltage output module is installed in
COMM, it can be used as alarm output. If I2 module
is installed in COMM and parameter “bAud” is set to 1,
then on-off signal can be inputted, and SV1 and SV2
can be switched by connecting a switch between
AU1
AUX
COMM/AL1
1
2
3
4
5
6
7
8
9
11
12
13
14
10
AU2
COM
COM
N/O
N/C
N/O
N/O
+
+
A
B
+
100-240VAC~
+
+
OUTP
COM
COM
N/O
N/C
N/O
N/O
OP2
OP1
+
0-5V
1-5V
G1
G2
Thyristor trigger output
（K1）
COM
N/O
+

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terminals 3 and 4.
Wiring graph of instruments with D2 dimension as below:
Note 1: D2 dimension instruments don’t support 0～
5V or 1～5V linear voltage input. However, 0～5V or
1～5V signal can be converted to 0～500mV or 100～
500mV by connecting external precise resistors, 4～
20mA can be converted to 100 ～500mV by
connecting a 25ohm resistor, then be inputted from
terminals 9 and 8.
Note2:ForCOMM/AUXslot,ifSorS4
communication module is installed in, it can be used
for communication; if L2 or L5 module is installed in,
and parameter bAud is set to 0, it can be used for
AU1 or AU1+AU2 alarm output; if L1, L2, L4, G, K1,
W1 or W2 is installed, it can be the auxiliary output in bidirectional (heating/refrigerating) control (Auxiliary output
doesn’t support analog current output); if I2 is installed and bAud is set to 1, then it can input on-off signal to switch
SV1 and SV2 by connecting a switch between terminals number 3 and 5.
1
2
3
4
5
6
7
9
10
8
COM
N/O
+
100-240VAC~
AU1
COMM/AUX
AU2
A
B
COM
COM
N/O
N/C
N/O
N/O
+
G1
G2
Thyristor trigger output
（K1）
OUTP

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Load
Thyristor trigger output
100~380VAC
IN4001
1N4001
Load
Thyristor trigger output
SCR X2
5~500A
BX
BX
Capacitor Resistor
Absorber Circuit
Varistor
G1
G2
G1
G2
ZNR
ZNR
V
V
100~380VAC
TRIAC
5~500A
Capacitor Resistor
Absorber Circuit
Varistor
SCR Pow er Module
Note 1: According to the voltage and current of load, choose suitable varistor to prevent the thyristor. Capacitor
resistor absorber is needed for inductance load or phase-shift trigger output.
Note 2: SCR power module is recommended. A power module includes two SCRs, is similar to the above dashed
square.
Note 3: K5 (Phase-shift trigger module) only support 220～380VAC and 50Hz power.