Electrical Connection - ABB 266D Series Short Form Instruction Manual

... INSTALLATION
Piping Considerations
The following points must be observed for th correct installation
of a pressure transmitter:
– Keep the measurement piping as short as possible and
avoid sharp bends.
– Lay the measurement piping so that no deposits can
accumulate.
Gradients should not be less than 8%.
– Measurement piping should be blown through with
compressed air or, better still, flushed through with the
measuring medium before connecting to the measuring
element.
– If the medium is a liquid /vapor, the filling liquid must be
at the same level in both pipes.
If using separating liquids, both pipes must be filled to the
same height.
– Keep both pipes at the same temperature whenever
possible.
– Completely bleed measurement piping if the medium is a
liquid.
– Lay the measurement piping so that gas bubbles, when
measuring liquids, or condensate when measuring gases,
can flow back into the process piping.
– Ensure that the measurement piping is correctly connected
(H or L side)
– Ensure that there are no leaks in the piping.
– Lay the measurement piping so that blowouts do not occur
via the sensor.

ELECTRICAL CONNECTION

The relevant guidelines must be observed during the electrical installation! Since the transmitter has no switch-off elements, it is
important to provide the possibility of disconnecting the power main or providing over-current protection devices on the system
side (over voltage protection may be selected as a transmitter option). An open cover does not provide a protection against
accidental contact. Do not touch any conductive components. Check that the existing operating voltage corresponds to that
indicated on the type plate. For power supply and output signal, the same lines are used.
Use the enclosed connection diagram! The electrical connection is made via cable entry 1/2-14 NPT or M 20 x 1.5 (or via optional
plug Han 8 U).
The red plugs are to be removed when the transmitter is installed in Hazardous area. They are not explosion proof certified products.
To ensure the Type 4X and IP 67 degree of protection for transmitter according to Canadian Standard CSA, the conduit must be
screwed into the housing 1/2" NPT female using a suitable sealing compound. The blanking plug has been sealed with Molykote
DX, the use of any other sealing compound is done so at owners own risk.
Electrical requirements - HART
The transmitter operates on a minimum voltage of 10.5 Vdc to a maximum of 42 Vdc and is protected against polarity inversion.
Installing optional devices the minimum voltage increases to:
- 10.5 Vdc with no option or with integral digital display links
- 12.3 Vdc with surge protection
The total loop resistance is the sum of the resistance of all elements of the loop, including wiring, conditioning resistor, safety
barriers and additional indicators (excluding the equivalent resistance of the transmitter). Where a configuration device (HART),
such as the Hand Held Communicator or a Modem is likely to be used, a resistance of 250 ohm minimum should be present
between the power supply and the point of insertion of these devices, to allow communication.
Several types of safety barriers, either passive or active, can be satisfactorily used in conjunction with the Smart 2600T transmitter.
Nevertheless, in case of use of active barriers, check with the supplier if the model is suitable for use with smart transmitters
allowing the connection of the configuration devices in the "safe" or non-hazardous area.
Electrical requirements - PROFIBUS - PA
PROFIBUS-PA transmitters are provided for the connection to segment couplers DP/PA. The permissible voltage at the terminals
is DC 9 - 32 V (9 - 17,5 V for FISCO). The current is approx. 15 mA (average; sending). A shielded cable is recommended.
Contacting of the shield is done in the metal screwing. The transmitter must be grounded; the shield must be grounded as well
only at one point. For further information, please refer to PROFIBUS PA installation guide.
When operating with an Ex-segment coupler, the max number of devices may be reduced by a time-dependent current limitation.
The output signal of the transmitter is transferred digitally according to IEC 61158-2. The instrument is compliant to Profile 3.02.
It's Identification No. is 3450 HEX. During cyclic data traffic, the OUT variable is transmitted. It is composed of the output value
and 1 byte status information. The output value is transmitted with 4 bytes as IEEE-754 Floating-Point-Type.
6 SOI/266-XC | 2600T Series Pressure transmitters 266 models
Compliance with pressure directive
(97/23/CE)
Devices with PS >200 bar
Devices with a permissible pressure PS >200 bar have been
subject to a conformity validation. The data label includes the
following specifications:
Fig. 5 PED identification number
Devices with PS <200 bar
Devices with a permissible pressure PS <200 bar correspond
to article 3 paragraph (3). They have not been subject to a
conformity validation. These instruments were designed and
manufactured acc. to SEP Sound Engineering Practices.