DayTronic 3000PLUS Manual de instrucciones - Página 18
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PLEASE NOTE: Some of the wiring diagrams in this section show only the male connector head-
ers on the rear of the 3000PLUS instrument (also shown in Fig. 3). Each connected wire or jumper
is to be firmly secured to the corresponding SCREW TERMINAL of the terminal block (supplied
with the meter) that plugs into the appropriate header.
Proper shielding of cable wires or twisted pairs—as shown in Figs. 7 through 10—is strongly rec-
ommended to minimize the production of unwanted electrical noise from capacitive and inductive
effects.
In the I/O cabling diagrams below, only the "connector end" of each cable shield is shown, as rep-
resented by a gray circle surrounding either a single wire or a TWISTED PAIR of wires within the
cable. Unless otherwise stated, every shield should be grounded to the appropriate common or
ground terminal only at the connector end. The drain wire tying the connector end of the shield to
common/ground should be as short as possible.
2.
P
A
OWER
The 3000PLUS requires a user-supplied external
source of 24 VDC, regulated to ±10%. Nominal con-
sumption is 300 mA; maximum is 350 mA.* The figure
below shows how the positive and negative power
leads are tied, respectively to the rear-panel +24 VDC
and POWER COMMON terminals. Local grounding is
not required.
* An optional 18-W in-line power supply for the 3000PLUS (the
Model 3KPS1) is available from Daytronic. Contact the factory
for more information.
Fig. 6
3000PLUS Power
Connections
3000PLUS
C
ABLE
C
ONNECTIONS
5D40 I
WITH
2. C
ONNECTIONS
S
HIELDING
NOTE: On every normal powerup, the 3000PLUS will
display (for two or three seconds) its firmware version
number ("V x.x") alternating with
24 VDC
POWER
SUPPLY
M
NSTRUCTION
ANUAL V
. SB.3
3KP40 - 2.1