Ⅷ Additional Remarks Of Partial Function; Linearity Current Output; Time Proportion Control - Yuyao gongyi XMT-808 series Operation Manual

Field
EP1-
parameter
EP8
definition
Ⅷ、
Additional remarks of partial function
8.1 linear current output
Any specification linear current continuum output.（OP-A=1） ：output upper limit and output
lower limit define the instrument's current output specification, and its range can set at random
between 0-22mA,for example output 0-10mA,so the setting is outL=0,outH=100(unit is
0.1mA).4-20mA can be set outL=40,outH=200,and
example output 2-8mA，set outL=20,outH=80 and so on .During setting,output can be valid when
outL is less than outH.

8.2 Time proportion control

Time proportion output（0P-A=2；OP-A=0 relay output or SSR voltage output：In case of time
proportional output mode,the output value can change by adjusting,during a fixed base period,the
ratio of on-off time(or the ratio of the time during which SSR high voltage output or low voltage
output is activated).
Time proportional output can be regarded as a square wave,the base period of which equals to
control period"T",and the output value of which direct proportional to the on-off ratio of the square
wave.The on-off ratio may be configured to be in the range of 0% to 100%.For special
applications,the range of time proportional output can be clamped by tuning parameters "OutL" and
"OutH".For example,if the output need to be clamped to between 20-60%，then OutL=20，
OutH=60may just be set.Normally in case of time proportional output,if OutL=0，OutH=100 is
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When configuration of the instrument is completed, most
parameters will not need to be locale operators.
Furthermore, locale operators may not understand many
parameters, and may probably set parameters incorrectly by
mistake and make the instrument unable to work.
EP1-EP8 defines 1-8 locale parameters for operators' user
in parameter table. Their parameter values are parameters
except parameter EP itself like ALM1、ALM2, etc. When
LOCK=0,1,2 and so on, only be defined parameter can
display, other parameters can not be displayed and
modified. This function can speed up the parameter
modification and prevent important parameters (like input,
output parameters) from modifying falsely.
Parameter EP1-EP8 can define 8 locale parameters at most,
if the number of locale parameters is less than 8
(sometimes even none), it is necessary to define useful
parameters from EP1-EP8 in order, the first parameter
which are not used is defined as none. For example, two
parameters of ALM1 and ALM2 are need to be modified by
locale operators, the parameter EP can be set as follows:
Loc=0、EP1=ALM1、EP2=ALM2、EP3=nonE
Sometimes locale parameters are not needed after we finish
adjusting the instrument, we can set EP1 parameter an
nonE
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it can also define nonstandard output,for
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none