REV2-21
TLC Series
haywardflowcontrol.com
The “Lo r” parameter is important if input is set to “4-20”, “1-5” or “2-10” mode only, and determines lower
border of the permissible range.
"AddP", "dELP" and "EdtP" options are available only if the user defined characteristic is used (it
means when parameter "CHAr" = "USEr").
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.
"Pnt"
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 to 4 mA, and "Hi C" parameter defines the value
displayed for 20 mA of the input current highest value. Available range for these
parameters: -999 - 9999. Negative values can be set by entering '-' sign on the first
position (by use of [^], [v] buttons).
"Lo C"
"Hi.C"
These parameters define the expansion of nominal range in percent. They determine
the permissible range of input signal (Figure 7.3). The permissible range allow user to
exceed the nominal range of input signal. If the input value is contained within the
permissible range correct result is displayed. If input signal exceeds this range (defined
by "Lo r" and "Hi r"), "-Lo-" or "-Hi-" warning is displayed depends on the input signal
value.
"Lo r"
"Hi r"
[mA]
0
1
4
20
21
22
"Hi r" = 5,0 % (1 mA)
max
min
"Lo r" =
75,0% (3 mA)
nominal measurement range (4-20mA)
permissible measurement range
measurement result is displayed
display
message
"-Lo-"
Figure 7.3 Example of defining a permissible range of input signal -
"Lo r" and "Hi r" parameters ("4-20" mode)
display
message
"-Hi-"
regardless on nominal range exceeding
