Dynisco IPX II Series, Руководство по эксплуатации

Страница: 40 / 78

40
COMMISSIONING
Fig. 7-2 Fig. 7-2
Fig. 7-2 Fig. 7-2 Fig. 7-2 T
TT
TTermin
ermin
ermin ermin erminal
al
al al al C
C
C C Connection
onnection
onnection onnection onnections
ss
ss
The use of an appropriate power supply is important. A 24 V dc supply having a current
handling capacity of at least 0.1A is commonly used. Always use a dc (direct current)
supply, or suitable size battery. Nev
Nev
Nev Nev Never c
er c
er c er c er connect
onnect
onnect onnect onnect the IPX
the IPX
the IPX the IPX the IPX II
II
II II II Serie
Serie
Serie Serie Series
ss
ss Sm
Sm
Sm Sm Smar
ar
ar ar arttttt Pr
Pr
Pr Pr Pre
e
e e es
ss
sss
ss
ssur
ur
ur ur ure
e
e e e
T TT TTrrrrran an an an ansmitt smitt smitt smitt smitter dir er dir er dir er dir er directly ectly ectly ectly ectly t t t t to 115V o 115V o 115V o 115V o 115VA A A A AC C C C C or 2 or 2 or 2 or 2 or 230V 30V 30V 30V 30VA A A A AC. C. C. C. C.
With the power supply off, connect the (+) side of the power supply to the (+) OUT terminal of the
electronics module. Connect the (-) side of the power supply through a 250
Ω
resistor to the (-) OUT
terminal of the electronics module. See Figure 7-2. Connect the input terminals 1 and 3 in series
with the current loop to be measured. Terminal 1 should be more positive than 3.
Current Input High (+MA)
Current Input Low (-COM)
The output can be monitored by connecting a multi-meter in series with either of the two output
terminals, or by connecting a high impedance voltmeter across the 250
Ω
resistor. Turn on the power
supply. In about 5 seconds the IPX II Series Smart Pressure Transmitter loop current will settle to its
normal value in the range of 4 to 20 mA.
If the unit has been ordered with optional dual LCD display, the display and display adapter must be
removed to connect the 24 V dc power to the unit. The display pulls off the display adapter, see
Figure 7-3.
There are two types of display adapters, the standard without a second 4-20mA output for
temperature or an adapter with a second 4-20 mA output for temperature. The display adapter is
connected through standoff posts by two 6-32 screws.