VELTRON DPT 2500-
plus
Air Monitor Corporation
116-047-20.PMD (5/5/11)
VELTRON DPT 2500-
plus
- IO&M Manual
7
SECTION 4 – INSTALLATION
4.5 – POWER/SIGNAL CONNECTIONS
All wiring is done at the terminal strip of the VE
LTR
ON DPT 2500-
plus
. The cover needs to be opened or removed to
gain access to the terminal strip. On the industrial version, the signal/power wires need to be routed through the
conduit connection on the bottom side of the enclosure. It is recommended that wiring be between 14 awg and 22
awg, and no more than two wires should be connected to any one terminal. Follow Figure 4.2 below to connect the
Power/Signal wires.
Figure 4.2
POWER 24V AC/DC
. Power required by the VEL
T
RON DPT 2500-
plus
must be connected to the two terminals
labeled LINE(+) and NEUT(–). Earth ground should be connected to the t
e
rminal labeled EA
RT
H. Power Supply
must be 20-28VAC or 20-32VDC.
OUTPUT
. This output is sourced (powered) by the VEL
TR
ON DPT 2500-
plus
, and can be configured for 0-5VDC, 0-
10VDC, or 4-20mADC. Review the Factory Set-Up Information Sheet for your unit
'
s configuration.
0-5VDC:
Minimum load resistance is 2500 ohms.
0-10VDC:
Minimum load resistance is 5000 ohms.
4-20mADC: Maximum load resistance is 750 ohms.
4.6 – OUTPUT SELECTION
Selection of output type (0-5V, 0-10V, or 4-20mA) is made via jumpers J1 through J3 (see Figure 4.2)
. Th
e selection
of voltage or current output is made with J1 and J3 which both must be in the same position V or I.
The
selection of
5V or 10V is made with J2. (If current is selected with J1 and J3, J2 has no effect, and can be lef
t in
either position.)
Note: If ou
tp
ut jumpers are changed from factory setting, output calibration should be performed (see Section 6.4)
to ensure accurate outputs.
4.7 – DISPLAY CONTRAST ADJUSTMENT
To compensate for di
ffe
rent ambient lighting conditions and viewing angles, the VELTRON DPT 2500-
plus
display's
contrast can be adjusted for optimum visibilit
y.
Contrast is adjusted using potentiometer R20 (see Figure 4.2). Turn
R20 clockwise to increase contrast (darken characters relative to background) or counterclockwise to decrease
contrast.
Summary of Contents for VELTRON DPT 2500-plus
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