Electrical Connection; Cabling; Connection Diagrams - Pepperl+Fuchs LUC-T Series Manual

7 Electrical connection

7.1

Cabling

Use screened two-core
instrumentation cable for the current
output of the LUC-T10, LUC-T20. For
optimal protection against
electromagnetic interference, the
screen should be grounded in the
controlroom or the nearest earthing
point. A good connection to ground is
essential to good screening.
Under certain circumstances, the
digital communication signal may be
affected if unscreened cable is used.
12
7.2

Connection diagrams

" LUC-T10, LUC-T20:
2-wire "loop-powered"
# LUC-T20:
4-wire, including mains power supply
$ LUC-T30:
4-wire, including mains power supply
#
LUC-T20
4-Wire, including mains power supply
4 mA ... 20 mA
+ –
L+ L- 4 mA 20 mA
I+
N I-
L1
3
1 2 4 5
+
+
V H
18 V ... 36 V DC
L + /L
180 V ... 250 V AC
1
90 V ... 127 V AC
L–/N
"
LUC-T10, LUC-T20
+
$
LUC-T30
4-Wire, including mains power supply
18 V ... 36 V DC, 180 V ... 250 V AC
90 V ... 127 V AC
L + /L
! L–/N
L+
L1
1
+
V H
+
4 mA ... 20 mA
+
–
!
4 5
+
V H
+
V H
+ –
4 mA ... 20 mA
d2 d4
1
+ –
L- 4 mA 20 mA
I+ I-
N
!
2 3 5
4
+
V H
+
V H