3. Cabling
3-60
TI 33Q01J10-01E
Connection of Fieldbus Communication Module ALF111
The Fieldbus can be connected by attaching a pressure clamp terminal block or by using a
Yokogawa-specific cable for connection to the terminal board (M4 screw).
ALF111
CN1
AEF9D
ALF111 and ATF9S
The ON/OFF setting of terminating
resistor can be made on the pressure
clamp terminal.
A terminating resistor
is necessary.
Yokogawa-specific cable
(AKB336)(*1)
ALF111
Connection with a pressure
clamp terminal
Connection with a terminal board
Connection with FG
F030613.ai
U
L
U
L
+
CH1
CH2
CH3
CH4
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
ALF111
RCV
SND
RCV
SND
*1:
If Type A cables are used for Fieldbus wiring, double the length of the AKB336 cable and include its length in with the total length
of the branch cables. Keep the trunk cable length (trunk line cable length) within 1900 m (total branch length).
Figure Fieldbus Wiring for ALF111
SEE
ALSO
For details of the Fieldbus connection and wiring work, refer to “Fieldbus Technical Information” (TI 38K03A01-
01E).
Sep. 30, 2008-00
