ABB 2600T Serie Bedienungsanleitung Seite 9

3.12 Wiring
Follow these steps to wire the transmitter:
− Remove the cap from one of the two electrical connection ports
located at both sides in the upper part of the transmitter housing.
− 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.
− 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.
− Run wiring through the open port and connect the positive lead
to the + terminal, and the negative lead to the – terminal.
Important. Do not connect the power across the Test terminals. Power
could damage the test diode in the test connection.
− 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.
− 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.
− 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 Ex-d (Explosion Proof) installation, lock
the cover rotation by turning the set nut (use the 2 mm Allen key
supplied with the instrument).
Figure 5: 266 HART terminal block
8 SOI/266-XC Rev. J | 2600T Series Pressure transmitters
Figure 6: 266 PROFIBUS PA / FOUNDATION Fieldbus
terminal block
3 Installation