ascon XE Series - Process Variable Input Wiring; Input Signal Considerations

11
Manuale XE inglese
• Respect polarities
• For eventual extensions, use a
compensated cable suitable for the type
of thermocouple used
• The eventual shield must be well earthed
at only one end
A - For thermocouples J-L-K-S-R
Line: max. 150 Ω
7
9
for 3-wire connection only
Line: max. 20 Ω per wire
A
B
B
7
9
10
B - For RTD Pt100
C • Continuous, mA, Volt
Input mA, Volt
Auxiliary
supply for
transmitter
6
7
9
Rin
X
i
4…20 mA
6
7
9
Rin
Transmitter
+24 Vdc
For 2-wire transmitter For 3 or 4-wire transmitter
X
i
6
7
9
Rin
Transmitter
+24 Vdc
Rin = 30 Ω per mA
Rin= 10 KΩ per Volt
+24
Vdc
• For 3-wire connection, use cables of
same section (min. 1 sq.mm)
• For 2-wire connection, use cables of
adequate section (min. 1.5 sq.mm.)
Note:
with a 15 m. probe to controller distance
and a 1.5 sq.mm. section cable, the error
is about 1°C.
com.
2 • Process Variable (X)
4 • ELECTRICAL WIRING