User manual for meter with U/I input SRP-77
input signal drops, result value of the measure will change slow, causes of
turning on or off relay due to thresholds values. The critical situation is slowly
detected, so it is impossible to predict the relay state in that situations.
•
If parameter „
AL
” = „
on
”, the relay will be turned on in the critical situations, even
if his parameter
“modE”
=
”noAC”.
7.3.2.
“inPt” menu
This menu presets the measurement input:
“
tYPE
"
- type of the input / sensor. This parameter can be set to values:
”
0-20
”,
“
4-20
”
- current inputs.
”
0-10
”,
“
2-10
”, ”
0-5
”,
“
1-5
”
- voltage inputs.
Displayed values are defined by parameters
“Lo C”
,
”Hi C”
(or by user defined
characteristic points) and parameter
”Pnt”
.
”CHAr”
- this option presets type of the conversion characteristic, and can be set to:
”Lin”
- linear
“Sqr”
- square
“Sqrt”
- square root
When one of those characteristics is chosen display
range is defined by
“Lo C”
and
“Hi C”
.
“USEr”
- user defined characteristic. Maximal length 20 points. Every point is
defined by user. Adding, Editing and Deleting of points is done by options
„
AddP
”, „
EdtP
”, „
dELP
” („
InPt
” menu) respectively.
If user defined characteristic is selected, and if number of defined points is lower
than 2 then warning ”
Errc
” is displayed in measurement mode.
The process of displayed result calculation is described in details in
DISPLAY VALUES
CALCULATION
paragraph.
”FiLt”
- this parameter sets filtration rate. It can be set to values from 0 (no filtration ) to 5
(strongest filtration – time window about 2 sec).
”Pnt”
- decimal point position. It can be set to one of:
“ 0”
,
“ 0.0”
,
“ 0.00”
,
“0.000”
Decimal point position is changed by
[^]
,
[v]
buttons.
“Lo C”
“Hi C”
These parameters describe the values displayed for minimum and maximum input
current. For example, if input type is set to 4-20 mA
“Lo C”
parameter defines the
value displayed when input current is equal 4 mA, and
“Hi C”
parameter defines
the value displayed for 20 mA of input current. Available range for these
parameters: -999 ÷ 9999. Negative values can be set by entering
'-'
sign on the first
position (by use of
[^]
,
[v]
buttons).
If user defined characteristic is selected
(parameter
“CHAr”
=
”USEr”
) the
parameters „
Lo C
” and „
Hi C
” are not available for modification, due to their values
are calculated from defined characteristic.
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