Device Introduction; Feature Overview; Transmitter Wiring; Cable Connection - ABB 2600T Series Operating Instructions Manual

7 Device introduction

7.1 Feature overview

The 2600T-266 PdP Profibus PA is compliant with the PNO
Profile for Process Control Devices version 3.02 – Class B [Ref.
2].The 2600T-266 PdP PROFIBUS PA is a compact slave
device implementing:
n° 1 Physical Block,
n° 3 Analog Input function blocks
n° 1 Pressure Transducer Block
n° 1 HMI Transducer Block
n° 1 Advanced Diagnostic Transducer Block with PILD
algorithm (Plugged Impulse Line Detection)
Important. For convenience, all the device parameters mentioned
in this document are written with the prefix indicating the block into
where they are mapped:
— PB_ = Physical Block
— PRTB_ = Pressure Transducer Block
— ADTB_ = Advanced Diagnostic Transducer Block
— HMI_ = HMI Transducer Block
— AIx_ = Analog Input Function Blocks where the x is the
number of the AI (1, 2, 3)
For all the complete details about the device parameters and their
mapping refer to the APPENDIX A at the end of this manual

7.2 Transmitter wiring

Warning. Observe the applicable regulations governing electrical
installation. Connections must only be established in a
dead-voltage state. Since the transmitter has no switch-off
elements, overvoltage protection devices, lightning protection, and
voltage separation capacity must be provided at the plant
(overvoltage/lightning protection is optional). Check that the
existing operating voltage corresponds to the voltage indicated on
the name plate. The same lines are used for both the power supply
and output signal. In case the surge protection option is present
and the transmitter is installed in a Hazardous area, the transmitter
has to be power supplied from a voltage source isolated from
mains (galvanic separation). Furthermore the potential equalization
for the entire powering cable must be guaranteed since the
intrinsic safety circuit of the transmitter is grounded.
Warning. Electrical shock can result in death or serious injury.
Avoid contact with the leads and terminals. High voltage that may
be present on leads can cause electrical shock.
Warning. Do NOT make electrical connections unless the electrical
code designation stamped on the transmitter data plate agrees
with the classification of the area in which the transmitter is to be
installed. Failure to comply with this warning can result in fire or
explosion.
30 OI/266/PB-EN Rev. E | 2600T Series Pressure transmitters

7.2.1 Cable connection

Depending on the design supplied, the electrical connection is
established via a cable entry, M20 x 1.5 or 1/2-14 NPT thread,
or Han 8D plug (8U) (PROFIBUS PA and FOUNDATION
Fieldbus: M12 x 1 or 7/8 plug). The screw terminals are
suitable for wire cross sections of up to 2.5 mm2 (AWG 14).
Important. With Category 3 transmitters for use in "Zone 2", a
qualified cable gland for this type of protection must be installed by
the customer (see the section "Hazardous Area Consideration").
An M20 x 1.5 threads is located in the electronics housing for this
purpose. For transmitters with "Flameproof enclosure" (Ex d) type
of protection, the housing cover must be secured using the locking
screw. The screw plug that may have been supplied with the
transmitter must be sealed at the plant using Molykote DX. The
installer assumes responsibility for any other type of sealing
medium used. At this point, we wish to draw your attention to the
fact that increased force will be required to unscrew the housing
cover after an interval of several weeks. This is not caused by the
threads, but instead is due solely to the type of gasket.

7.2.2 PROFIBUS wiring procedure

The 2600T-266 PdP PA is a Bus Powered device with Profibus
PA output.
Important. The 266 PdP PA is not Polarity consistency.
Warning. Cable, cable gland and unused port plug must be in
accordance with the intended type of protection (e.g. intrinsically
safe, explosion proof, etc.) and degree of protection (e.g. IP6x
according to IEC EN 60529 or NEMA 4x). See also the addendum
for "EX SAFETY" ASPECTS AND "IP" PROTECTION. In particular,
for explosion proof installation, remove the red temporary plastic
cap and plug the unused opening with a plug certified for
explosion containment.
Follow these steps to wire the transmitter:
1. Remove the temporary plastic 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 may have a 1/2 inch internal NPT
or M20 threads. Various adaptors and bushings can be
fitted to these threads to comply with plant wiring
(conduit) standards.
3. Remove the housing cover of the "field terminals" side.
See the indication on the label on top of the housing. In an
Explosion-Proof/Flame-Proof installation, do not
remove the transmitter covers when power is applied to
the unit.
4. Run the cable through the cable gland and the open port.
5. Connect the two bus wires to the + terminal, and the –
terminal without take care of their polarity.
7 Device introduction