Wiring; Transmitter Configuration - ABB 2600T Serie Bedienungsanleitung

... ELECTRICAL CONNECTION
Electrical requirements - FOUNDATION Fieldbus
F
oundation 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.
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.
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 mm

WIRING

Follow these steps to wire the transmitter:
1. Remove the cap from one of the two electrical connection ports located at both sides in the upper part of the transmitter housing.
2. These connection ports have a 1/2 inch internal NPT threads. Various adaptors and bushings can be fitted to these threads to
comply with plant wiring (conduit) standards.
3. Remove the housing cover of "field terminals", side. In an Explosion-Proof/Flame-Proof installation, do not remove the transmitter
covers when power is applied to the unit.
4. Run wiring through the open port and connect the positive lead to the + terminal, and the negative lead to the – terminal.
Note: Do not connect the power across the Test terminals. Power could damage the test diode in the test connection.
5. Plug and seal the electrical ports. Make sure that when the installation has been completed, these openings are properly sealed
against entry of rain and corrosive vapors and gases. In particular, for Ex-d (Explosion Proof) installation, plug the unused opening
with a plug suitable/certified for explosion containment.
6. If applicable, install wiring with a drip loop. Arrange the drip loop so the bottom is lower than the conduit connections and the
transmitter housing.
7. Put back the housing cover, turn it to seat O-ring into the housing and then continue to hand tighten until the cover contacts
the housing metal-to-metal. In EEx-d (Explosion Proof) installation, lock the cover rotation by turning the set nut (use the 2 mm
Allen key supplied with the instrument).

TRANSMITTER CONFIGURATION

Output 4...20 mA/HART communication
Use power supply units or batteries which ensure a permanent operating voltage of DC 10,5 V ...42 V for the transmitter. Consider
the resistance of the signal receiver (e.g. display) is looped into the signal circuit and the max. current of 20 ... 22mA, caused by
over modulating. We recommend using screened, pair wise twisted signal cables. Do not place these cables close to other cables
(with inductive load) or close to other electrical devices.
Fig. 6 HART terminal block
) is necessary over the entire wiring.
2
Fig. 7 PROFIBUS and Fielbus terminal block
2600T Series Pressure transmitters 266 models | SOI/266-XC 7