Analog output – Laurel Electronics LAUREATE SERIES COUNTER_TIMER User Manual
Page 46
16.
ANALOG OUTPUT
The analog output option provides a 0 to 20mA and a 0 to 10Vdc linear signal derived from the
displayed reading. The low signal output and high signal output may be set to equal any
displayed value. Although both outputs are available, only one is calibrated to specifications.
The other output is accurate to +/-1% of the displayed value typical (2%max). To select which
output is calibrated, install jumpers per Section 19. 1.
16.1
4 TO 20MA OUTPUT SCALING
The output is scaled by selecting a displayed value for the low signal output and a displayed
value for the high signal output. For a current output, the low value is 0mA and the high output
is 20mA. To scale a signal for 4 to 20 mA, the following procedure must be used:
1.
Desired display value for 20mA - Desired display value for 4mA = Display span
2.
Display span / 4 = Offset value
3.
Desired display value for 4mA - Offset value = An Lo
4.
An Hi = Desired display value for 20mA
16.2
ANALOG OUTPUT SETUP SOFTWARE
The following menu items are accessible only with an Analog Output option installed and
appropriate lockouts enabled. See Section 10 for further information. Setup Example: 4mA
to 20mA out = 5000 counts to 15000 counts (See Section 19.2).
DIGIT SELECT KEY
VALUE SELECT KEY
MENU KEY
1 2 3 4 5 6
Press to select value for
flashing digit
Digit 5: Current or Voltage
Digit 6: Source for analog
output.
Press to display status.
Press again to select
digit. Selected digit will flash.
Press the
key until An
Set (Setup of analog output)
is displayed. See Section 9,
An Set for detailed selection
information for Digits 1
through 6.
Press to select value for
flashing digit
Press to display value.
Press again to select
digit. Selected digit will flash.
Press the
key until An Lo
(Displayed value at 0mA or
0V) is displayed.
Press the
key until An Hi
(Displayed value at 20mA or
10V) is displayed.
Press to display value.
Press again to select
digit. Selected digit will flash.
Press to select value for
flashing digit
-44-