Yatai YLD-2000 User manual

heating device
Pt100
YLD-2000
DIGITAL TEMPERATURE CONTROLLER
INSTRUCTION MANUAL
Before using this product, please carefully read this manual for its correct use. In addition, after reading the manual,
keep it available easily anytime.
OPERATION PRECAUTIONS
Before cleaning the instrument, check that the power is turned off.
Please using the soft clothes or tissue paper to remove stains on the display unit.
Because the display unit is easily scratched, please do not scrub or touch it with a hard object.
Do not operate the front key with a pointed object such as a ballpoint pen or screwdriver, as this may scratch or
damage the key.
1．PRODUCT CHECK
This instrument is applicable for constant temperature control for the electro thermal dryness, constant
temperature water groove, germ cultivation, biochemistry cultivation and etc. This instrument can be also used in
the temperature control of medicine appliances, laboratory apparatus and so on.
Check whether the delivered product is as specified by referring to the following model code list.
■Model code
YL □-□□□□ □□—□
①②③④⑤ ⑥⑦
①Panel Dimensions（mm）④Type of refrigeration control
D:96×96 ；E:72×72 1: refrigeration control with time delayed function
②Series code (used to control compressor)
③Type of heating control ⑤Type of the sensor
3: half proportional control 2: Thermo-resistance(RTD)
4: On-off PID control with auto tuning ⑥Calibration of the sensor Pt100
⑦The range of measurement
2．MOUNTING
2.1 Mounting cautions
（1）This instrument is intended to be used under the following environmental condition
Ambient pressure：86 kPa to 106 kPa。Ambient temperature：0 ℃to 50 ℃.Ambient humidity：45% to 85%RH.
（2）Following cautions must be kept in mind while mounting:
Rapid changes in ambient temperature, which may cause condensation.
Corrosive or inflammable gases.
Direct vibration or shock to the mainframe.
Water, oil, chemicals, vapor or steam splashes.
Excessive dust, salt or iron particles.
Excessive induction noise, static electricity, magnetic fields or noise.
Direct airflow from an air conditioner.
Should be used indoors where the system is not exposed to direct sunlight.
Shanghai Yatai
Instrumentation Co., Ltd.
Address：No.1851 North Sichuan Road, Shanghai, China
Tel：[phone] 51053128 Fax : [phone]
Email：[e-mail] Mail Code: 200081
2．2 Principle technical performances
(1) Power supply voltage: 198 to 242 VAC(50/60Hz)(rated voltage 220VAC)
(2) Power consume: less than 5VA
(3) Control mode: Half proportional or on-off PID control
(4) The load power for heating output<=0.8KW
(5) The refrigeration output: Relay 240VAC,5A to drive the immediately switch
(6) The size of panel hole: 91×91(mm)
(7)external thyristor(Max41A) (10)(11)(12) 。
3．WIRING
Power supply
YLD-2000
⑴
⑵
⑶
⑷
⑸
⑹
⑺
⑻
⑼
After pulling out it the buzzer will be open current, the sound will cease.
4．Configuration of the Instrument Panel
①PV display unit(Red)
Displays measured value or the various characters
depending the statue of the instrument
②SV display unit(Green)
① Displays the set value or the timing and rated parameters
③Indicators
② RUN working indicator(Green), Flashes during auto-tuning execution.
 HAT heating output indicator(Green), turned on when outputs operate
③ ALM alarming indicator(Red),
turned on when alarming output operate and the buzzer sounds
  COL refrigeration output(Green) turned on when the refrigeration is working
④Function key
 Used for displaying the change and confirm of the parameters
⑤Add or Subtract key for changing the digital code
④⑤and/or the key to express entering the auto-tuning state
. Used for adjusting the digital code displayed or entering the auto-tuning state.

5．OPERATION
5.1 Sequence to pick up the functions of the instrument
Power on
Upper row displays code （ Sn ）， lower Row
displays type No. （Display input type）
Upper row: Input high limit, lower row
input low limit(Display input Lange) Automatically turn over after 4 seconds displaying
Upper row displays process value, lower Automatically return over when not press any key over 1 minute
row displays set value(Standard mode)
Press function key Upper row displays setting code (SP,St), lower row
displays set value （ Update the setting mode ）
Press function over 4 seconds Upper row displays function code (AL …), Lower row displays
control parameters（ Changing the control parameters ）
5.2 The detail description for every function
 If upper row displays ―OVER‖ the sensor is in open circuit or the input signal excesses the range of measurement.
The method for changing set value:
Press  /set key the upper row displays SP. Pressor key，the low row displays the needed
value. Again press  the upper row displays st key. Pressor key, the lower row displays the timing
time needed. Again press  key, the instrument return to the standard display mode.
Timing function
When the value of St is setting to zero, the timing function is canceled. Otherwise when the
value of St is not setting to zero the timing function is available.
When the power is turned on, the timing function starts . In case of achieving the setting timing the heating
output is close. and the buzzer sounds four times to notice the operator.
But the refrigeration output is working continuously. When the system is starting with auto tuning, the timing
function is also canceled. When the auto tuning process is completed, the
timing function would start again. During the operating period of the instrument, it is allowed to update the
value of St online, and the time passed can be memorized and the instrument will operate the updated timing
time. When the updated time is less than the passed accumulative
time, the heating output close immediately, the buzzer sounds 4 times. The refrigeration output is working
continuously.
The method for changing control parameter:
After press  key over 4 seconds, find LK. Then press or key to the lower displayer display 18.Again
press the  key to find the symbol character for the needed parameter. Through press the or key till the
high row displays display the parameter needed is reached. Some parameters may be setting at once. Press the
 key over 4 seconds the instrument returned to
the standard mode. If no key is press down the instrument return to its standard mode after 1 minute.
5.3The function of the controllerAuto-tuning
After pressing /TIME key, The instrument displays the time have operated.
After pressing /AT key 20 seconds the AT indicator flashes and the auto-tuning press starts; after the end of
auto-tuning the AT indicator then be turned out. A set of PID parameters can be got automatically for overcoming
temperature overshoot. The controller operates according to this set of PID parameters.
is working continuously.
In the period of auto tuning, if press /AT key beyond 20 seconds the AT indicator turn out and the auto tuning
process is canceled. The instrument operated according to the original PID parameters.
Following table lists the function parameters
Symbol
Name
Setting range
Description
factory set
value
Alarming setting
0～Full Range
0.0～Full Range
When temperature is beyond SP+AL, the ALM
indicator turn on. The buzzer sounds and the
heating power turn off.
50
(50.0)
AL
Refrigeration
control setting
0～Full Range
0.0～Full Range
When the temperature less than SP+COL, the
refrigeration point is turn on to drive the
compressor.
50
(50.0)
CL
Proportional
Band
1～Full Range
1.0～Full Range
Proportional control action . if P is larger then
the gain of system is lower. it only use on the
heating side.
30
(30.0)
P
Integral Time
0～3600
seconds
Integrated time constant. I larger, then the
integrated action is smaller.
240
I
Derivative
Time
0～3600
seconds
Derivative time constant. D larger, then the
derivative action is also larger. D can overcome
overshoot. I=0 and D=0 is called half
proportional control.
60
d
Overshoot Control
(re-setting)
0～100%
At on-off PID control, the value of Ar is a
constant which equals 1.5~2 times of the ratio of
on time to the on-off period in the equilibrium
state. In the half proportional control, the Ar
equals coefficient/P.
100
Ar
heating period
1～300
seconds
For the thyristor output it is about 1 ～3
seconds. For those equipment that the
superfluous power provided is comparatively
larger, select larger T would decrease the stable
error caused by PID control.
3
T
Zero point adjust
(intersection)
-100～100
-100.0～100.0
When the zero error comparatively smaller and
the full point error comparatively larger, to
update this value should be needed. Ordinary for
Pt100,updating this value is rarely needed.
0
Pb
Full point adjust
(intercept)
-1000～1000
seconds
When the zero error comparatively larger and
the full point error also comparatively larger, to
update this value should be needed. PK=4000×
（setting value –actual value）/actual value. For
Pt100 adjusting this value is need at first time.
0
PK
Refrigeration
control Time
delayed
0～3600
seconds
When measuring value reaches its alarm value,
the alarm relay output will be delayed this time..
60
Ct
The decimal
Point setting
0；1
When D=0 the display resolving power is 1℃
and when DP=1 the display resolving power is
0.1℃
1
dP
The range setting
0～400℃
0.0～99.9℃
Adjusting rH can make the instrument range
equals 0～rH(℃)
Range
rH
Password key
0～255
when Lk=18 the parameters listed above then
the above parameters can be updated.
0
LK