L-737-3-E
26
6.9 Recommended Cables condition
CAUTION: 1. Bell202 HART communications protocol does not use these terminals. It
uses analog output 1 terminal.
2. Other communication interfaces require different handling. Please refer to
the supplementary communication manuals.
FOUNDATION fieldbus communication: "ALTImass series communication
manual for FOUNDATION fieldbus L-740FF"
PROFIBUS PA communication: "ALTImass series communication manual
for PROFIBUS PA L-740PB"
Modbus communication: "ALTImass series communication manual for
Modbus L-740CM"
6.8 Communication Line Wiring (option)
For communications (option), use terminals I/O. (＋) and I/O. (－).
NOTE:
※1 Please select the cable size to be used with the number of signals.
※2 Depending on the number of output signals used, selection for the right cable material
must be made referring to the table on the next page.
Item Label
Recommended condition
Rating voltage/
allowable current
(at 30℃)
Cross-section Solderless terminals
Maximum
operating
temp.
Power
L (＋)
300V over, 2A over
1.25sq to 2.0sq
AWG14 to 16
R-type, 8.1mm less
Size: M4
60℃ over
※2
N (－)
GND
Signal
A1 (＋)
100V over, 0.1A over
0.75sq to 2.0sq
AWG14 to 18
※1
R-type, 7.2mm less
Size: M3.5
A1 (－)
A2 (＋)
A2 (－)
P1 (＋)
P1 (－)
P2 (＋)
P2 (－)
S.I. (＋)
Need no Screwless
terminal type
S.I. (－)
S.O. (＋)
S.O. (－)
Communication
I/O (＋)
0.75sq
AWG18
I/O (－)
Extrnal
ground
600V over, 40A over
4sq over
AWG12 over
Directly wiring or
Solderless terminal
(R-type, 8.1mm less)
6.10 Terminal Identification of Remotely Mounted Transmitter
Item
Terminal
name
Terminal
No.
Terminal
color
Description
TB20
1AB BRN
Flow tube drive output
2AB RED
3AB BLK
BRN/RED, GRN/WHT, BLU/GRY, PUR/ORG/YEL shielded wires
bundled
TB21
1AB PUR Temperature input (inner)
2AB ORG Temperature input (outer)
3AB YEL Temperature input
4AB BLU
Right position pickoff sensor input
5AB GRY
6AB WHT
Left position pickoff sensor input
7AB GRN
Sensor unit to transmitter
interconnect cable
(200 meters max.) ※
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