ABB 2600T Series Operating Instructions Manual page 7

3.8 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).
Important. 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.
3.8.1 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.
3.8.2 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. Its 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.
3.8.3 Electrical requirements – FOUNDATION Fieldbus
Foundation Fieldbus transmitters are provided for the connection to
H1 BUS.
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 FOUNDATION Fieldbus installation guide.
When operating with an Ex-application, the maximum 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. FF transmitter is registered as link master device
according to FF specification Version 1.7. There are different ways of
displaying and performing configuration on Fieldbus FOUNDATION
devices. DD (Device Description) and DD methods allow transmitter
configuration and data displaying across platforms.
3.9 Protective conductor / grounding
The transmitter operates within the specified accuracy with common
mode voltages between the signal lines and the housing up to 250 V.
In order to fulfill the requirements of the low-voltage guidelines and the
relevant EN 61010 rules for the installation of electrical components,
the housing must be provided with a protective circuit (e.g. grounding,
protective conductor) if voltages of >150 VDC could occur. A
connection terminal is available for grounding (PE) on the transmitter
exterior and also in the plug. Both terminals are electrically
interconnected.
3.10 Transmitter with integrated Surge Protector
Use a short wire to connect the transmitter housing via the earthing
connection (PA) to potential equalization. Potential equalization (min.
4 mm²) is necessary over the entire wiring.
2600T Series Pressure transmitters | SOI/266-XC Rev. I 7
3 Installation