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The picture below shows the pin-out of the two different Fieldbus connector models.
— The Bus lines are polarity independent.
— The GROUND and SHIELD connections must be evaluated depending by the installation rules
If necessary the ground terminal could be also connected. For details about the installation and connections refers to specific
documents in the Fieldbus Foundation website www.fieldbus.org and in the ABB website www.abb.com
Figure 39: Electrical connection
Parameter
Lower Range Value (LRV) (4 mA)
Upper Range Value (URV) (20 mA)
Output transfer function
Damping
Transmitter failure (alarm)
Optional LCD HMI scale
7.6 Grounding
A terminal is available on both the outside of the housing and
in the plug for grounding (PE) the transmitter. Both terminals
are electrically connected to one another.
7.7 Protective Grounding
All transmitters are supplied with an external ground connection
for protective grounding.
Wire this ground connection to a suitable earth ground. For a
transmitter measuring loop an earth ground should maintain a
resistance of 5 ohms or less.
Use a heavy duty conductor, at least 15 AWG / 1,6 mm
Figure 40: Ground connection on transmitter housing
32 OI/266/FF-EN Rev. B | 2600T Series Pressure transmitters
Internal ground termination point
Fieldbus lines
(polarity independent)
External ground termination point
Factory setting
Zero
Upper Range Limit (URL)
Linear
1 second
Upscale (21.8 mA)
1 line PV and output signal bargraph
2
Ø.
1
3
7/8" connector
2
4
Mating female plug
NOT SUPPLIED
2
3
1
M12x1 connector
4
PIN (male) identification for FF connectors
DATA –
1
DATA +
2
SHIELD
3
GROUND
4
Warning - General risk. A protective grounding connection is
absolutely necessary to insure personnel protection, to
protect against surge (in case of installation of this option) and
to prevent explosions in potentially explosive environment.
7.8 Integrated lightning protection (optional)
The transmitter housing must be connected using the grounding
terminal (PA), by means of a short connection with the
equipotential bonding. Equipotential bonding minimum diameter
2
of 4 mm
(AWG 12) is required throughout the cable routing
area.
In the case of transmitters with integrated lightning protection
(optional), the intrinsically safe circuit is connected to the
equipotential bonding for safety reasons.
Important. Test voltage withstand capability can no longer be
ensured when this protective circuit is used.
7 Transmitter wiring
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