Oval ALTI mass CA00A - Terminal Identification of Separately Mounted Transmitter

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7.9 Terminal Identification of Separately 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.) ※
※: Maximum lengths of the cable are: 50m for Type S stainless steel tube type, 100m for
Type S titanium tube type, and 5m for Type B sensors.
NOTE:
Cable specification Size
Max. cable
length
Impedance
Specific
resistance
Attenuation
Association-
recommended
OVAL-
recommended
Type A
Twisted pair cable
(pair shielded)
18AWG
0.8mm
2
1900m 100Ω 22Ω/km 3dB/km ○ ○
Type B
Twisted pair cable
(common shielded)
22AWG
0.32mm
2
1200m 100Ω 56Ω/km 5dB/km ○
Type C
Twisted pair cable
(unshielded)
26AWG
0.13mm
2
400m no regulation 132Ω/km 8dB/km ○
Type D
Straight through cable
(common shielded)
16AWG
1.25mm
2
200m no regulation 20Ω/km 8dB/km ○ ○
Recommended cable condition for FOUNDATION Fieldbus and PROFIBUS communication
Source: IEC 61158-2："Digital data communications for measurement and control – Fieldbus for use
industrial control systems – Part 2 : Physical layer specification and service definition"
Cable specification Size Max. cable length
Twisted pair 0.75mm
2
1200m (depends on operation environment)
Recommended wire size
Cable packing gum ID.
2sq 1.25sq 0.9sq 0.75sq Remarks
φ8.1 to φ9.0 2 2 2 2
FOUNDATION Fieldbus,
PROFIBUS PA Communication cable
φ9.1 to φ10.0 2 2 2 2
φ10.1 to φ11.0 2 3, 4 6, 7 6, 7
φ11.1 to φ12.0 3, 4 5 8 8
φ12.1 to φ13.0 5 6 10, 12 10, 12
φ13.1 to φ14.0 6 7, 8 － －
Recommended cable condition for Modbus communication
Applicable rubber packing size for wire lines and sizes
NOTE:
Placeable cable lengths vary depending on actual field conditions. For the details, refer to the
documents listed below:
・"PROFIBUS PA Technology and Application"
・FOUNDATION Fieldbus Application Guide AG-140; "Wiring and Installation; 31.25 kbit/s,
Voltage; Model,Wire Medium"
NOTE: Use shreld cables.