Parameter Function Description; Parameter Setting - Yuyao gongyi XMT-808 series Operation Manual

button operation ,it will exit automatically the state after 10 s.
6.2、 Setting parameter： press SET key for 3 second to enter setting parameter state. In this state
press SET key ,the instrument will display each parameter in turn, for example, upper limit ALM1、
parameter lock LOCK and so on，and for the instrument with good configuration and parameter
lock, only display needed parameter (the parameter on site) .Use ▼、 ▲、 ◄ （A/M） key can modify
the parameter data.First press◄（A/M）key and simultaneity press SET key can exit the setting
parameter state.If there is no button operation ,it will exit automatically the state after 10 s.
6.3、 Manual/Automatic mode switch （A-M=0） ： press◄ （A/M） key can make the instrument
switch between A/M. If the instrument works on Manual mode ,its output value can be increased or
decreased by pressing ▲key or ▼key under display status, and the lower display the first word
'M". If the instrument works on AUTO mode, press SET key can look for the automatic output
data(the lower display the first word"A").Through parameter setting 'A-M'（refer to the back
instruction）can make the instrument don't allow to switch to manual mode by panel button
operation in case that enter the manual mode blind.
6.4、 Setting itself （ At） ： Use the instrument at first time, start the function setting itself to assure
P、I、d control parameter. First do this ,switch the instrument into normal display state ,press ◄
（A/M）key for 3 second（AT=1） ，the lower display alternately "At". when the instrument setting
itself, the instrument use ON/OFF control, after 2-3 times ON/OFF,it will calculate automatically
P、 I、 d control parameter. If stop setting itself in advance ,press ◄ （A/M） key for 3s, and make "At"
disappeared .For different system, the time setting itself needed is different. After finishing the
setting itself successfully ,the instrument will set parameter At to 3， so it will not set itself through
press ◄（A/M）key on the panel so as to avoid artificially by accident to restart the setting itself.
The instrument can set parameter At to 2 when it restart after one time .（reference the back article
"parameter function"description）.
Before doing setting itself,it should set the assigned data into the common data or the median, if the
system is an electric cooker with good heat preservation property, the assigned data should be set
the biggest data allowed before start. The setting of Parameter t（Control period）and Hy（return
difference） will effect the process of setting itself .In a general way ,for these two parameter ,the
setting data are smaller, the parameter accuracy will higher. But if Hy data is smaller,the instrument
will be brought ON/OFF adjustment wrong action ,it will set wrong parameter .Command t=0-2，
Hy=0.3。
Avoid no load setting when setting itself ,it should be ineffectual when it set with no
load.
6.5、(Movement with hand)Setting itself：As it adopt "ON/OFF " adjustment, its output can be
positioned in the place defined by parameter outL and outH. In the occasion where didn't allow big
extent change, such as the occasion some actuator adopt controlling valve, the common setting
itself is not suitable ,it only need to set with hand. Firstly adjust with hand, after the adjustment is
stable, then use it automatically，so the output value will be limited in the current hand movement
XMT*808 series
Yuyao changjiang temperature meter factory
★Attention：
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