Presys DMY-2030 Light Technical Manual page 32

PRESYS
 Instruments
Select the range of the retransmission output for 4-20 mA, 1-5 V or 0-10 V.
Defining two points as shown in Figure 20. Low Eng is the display indication in
engineering units associated with the scale of zero (1 V for the 5 V output, 0 V for the
10 V output and 4 mA for the 4-20 mA output) of output range and Eng High is the
display indication in engineering units associated with the full scale (5 V for the 5 V
output, 10 V for the 10 V output and 20 mA for the 4-20 mA output) of the output range.
The Analog Output board should be installed in connectors CN1 and CN2 of CPU
board and have their jumpers properly arranged: no jumpers for 4-20 mA output,
jumper 1 for 1-5 V output and jumper 2 for 0-10 V output.
In FAIL parameter, you can set the output to generate a fixed safety value in case
input sensor breaking (RTD, TC, 4-20 mA or 1-5 V). For current 4-20 mA or 1-5 V
voltage input is considered sensor breaking when the input is lower than 3 mA or 0.75 V
(for LIM.LOW ≥ 20.0 %) or higher than 21 mA or 5.25 V. The value set to FAIL is given in
percent of output full scale (% FS), with an allowable range of values 0 % to 105 %. For
example, if the output is 4-20 mA and FAIL = 15%, output assumes the value of 3 mA
when input sensor breaking is detected.
Level 8 - Calibration
Level 8 is described in section 4.4 Calibration.
Operation
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LIM HIGH *
INDICATOR
OUTPUT
LIM LOW *
SIGNAL
0
Fig. 20 - Analog Output Configuration
DMY-2030-Light-5S-Energy
P2
P1
ENG LOW ENG HIGH
DISPLAY VALUE