2
TECHNICAL SPECIFICATION
●
Input type :
K, S, R, E, J, N, Pt100
●
Measurement range :
K(0
～
1300
℃
), S(0
～
1700
℃
), R(0
～
1650
℃
), E(0
～
800
℃
), J(0
～
1000
℃
), N(0
～
1300
℃
), Pt100(-200
～
600
℃
)
●
Measurement accuracy :
0.3%FS
±
1
℃
●
Temperature display resolution :
1
℃
●
Control mode :
On-off control mode or Artificial Intelligence control with auto tuning.
●
Output mode (modularized) :
L1, G, W1, K1, K3 modules are selectable
●
Alarm function :
High limit and deviation high alarm.
●
Power supply voltage rating :
100-240VAC, -15%, +10% ; 50-60Hz.
●
Power consumption :
≤
3W.
●
Ambient :
Temperature of
-10
～
60
℃
, humidity of 0
～
90RH%
FRONT PANEL AND OPERATION
①
Upper display window, displays PV, or code of a parameter
②
Lower display window, displays SV, alarming code, or value of a parameter
③
Setup key, for accessing parameter table, and confirming change.
④
Data shift key, also for activating auto turning
⑤
Data decrease key
⑥
Date increase key
⑦
Indicator lamps (MIO, OP1, OP2, AL1, AL2, AU1and AU2 indicate the I/O actions
of the corresponding modules. MAN and PRG are non-applicable for AI-508.)
Basal display status :
When power on, the upper display window of the instrument
shows the process value (PV), and the lower window shows the setpoint (SV). This
status is called basal display status. When the input signal is out of the measurable
range (for example, the thermocouple or RTD circuit is break, or input specification sets
wrong), the upper display window will alternately display “orAL” and the high limit or the
low limit of PV, and the instrument will automatically stop output.
OPERATION DESCRIPTION
●
Set Value Setting:
In basal display status, if the parameter lock “Loc” isn't locked, we can set setpoint (SV) by pressing
、
or
. Press
to
decrease the value,
to increase the value, and
to move to the digit expected to modify. Keep pressing
or
, the speed of
decreasing or inscreasing value gets quick. The maximum value of the setpoint is HIAL.
●
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
、
or
can modify a parameter. Press and hold
can return to the preceding parameter. Press
(don't release)
and then press
simultaneously can escape from the parameter table. The instrument will escape auomatically from the parameter table if no
key is pressed within 30 seconds.
●
Artificial Intelligence control and auto tuning
When AI control method is chosen, the control parameters can be obtained by running auto-tuning. At the first time of running auto-tuning, in
basic display status, press
for 2 seconds, “At” will flash at lower display window and the instrument executes on-off control. After 2 to 3
cycles of on-off action, the instrument will obtain the values of PID control parameters. If you want to escape from auto tuning status, press and
hold
for about 2 seconds until the "At" flash stops. Depending on the system, the time of auto tuning can be several seconds to several
hours. After the auto tuning finishes, the parameter “Ctrl” automatically changes to 3 (the initial value is 1) or 4, and then user can’t active auto
tuning by pressing
for 2 seconds. If user wants to run auto tuning again, setting parameter “CtrL” to 2. (Refer to the description of
parameter “CtrL”)
Note 1:
Before running auto-tuning, setpoint should be set to an often-used value or middle value first, and then start auto-tuning. Generally, for
application with 10%
～
80% time on heating can obtain satisfying auto-tuning result. If the heating time is not in the range of 10
～
80%, the
auto-tuning will run for a long time and can’t get satisfying result. Raising setpoint for heating time less than 10% or decreasing setpoint for
heating time greater than 80% can improve auto-tuning result.
Note 2:
Don’t modify the setpoint during auto-tuning. It may affect the precision of auto-tuning.
Note 3:
The temperature fluctuation caused by interference may affect the precision of auto-tuning. Besides checking the wiring, increasing the
parameter dL (input digital filter) can also reduce interference.
Note 4:
After auto-tuning finishes, generally, the temperature rising has a little over-shoot (about 1
～
3
℃
). It is because considering that the
transducer is often placed between the heater and heated material, and a little over-shoot can shorten the time of rising to setpoint and save
power. (Generally, the temperature of transducer can be raised quick than that of heated material)
A/M
RUN/HOLD
AI
STOP
①
②
③
④
⑤
⑥
⑦
PV
SV
AI