Omega DRST-CM User Manual

TM

User’s Guide

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DRST-CM

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Servicing North America:

U.S.A. Omega Engineering, Inc.
Headquarters: Toll-Free: 1-800-826-6342 (USA & Canada only)

Customer Service: 1-800-622-2378 (USA & Canada only)
Engineering Service: 1-800-872-9436 (USA & Canada only)
Tel: [phone] Fax: [phone]
e-mail: [e-mail]

For Other Locations Visit omega.com/worldwide

The information contained in this document is believed to be correct, but OMEGA accepts no liability for any errors it contains, and reserves
the right to alter specifications without notice.

Table of

Contents

DRST-CM Transmitter

Table of Contents

Section ........................................................................ Page

Section 1 Warning .......................................................................................... 5

Section 2 Symbol Identification .................................................................. 5

Section 3 Safety Instructions ........................................................................ 6

Section 4 Applications ................................................................................... 7

Section 5 Technical Characteristics ............................................................. 7

Section 6 Mounting/ Installation/ Programming ..................................... 8

Section 7 Mounting on a DRST device ...................................................... 8

Section 8 Order ................................................................................................8

Section 9 Electrical Specications ......................................................... 9-10

Section 10 Modbus Parameter settings ............................................... 11-12

Section 11 Modbus Settings - Routing Diagram ................................ 13-14

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1

GENERAL

HAZARD OUS

VOLTAGE

Warning

WARNING

This device is designed for connection to hazardous electric voltages. Ignoring this
warning can result in severe personal injury or mechanical damage.
To avoid the risk of electric shock and fire, the safety instructions of this guide must be
observed and the guidelines followed. The specifications must not be exceeded, and
the device must only be applied as described in the following.
Prior to the commissioning of the device, this installation guide must be examined
carefully.
Only qualified personnel (technicians) should install this device.
If the equipment is used in a manner not specified by the manufacturer, the protection
provided by the equipment may be impaired.

WARNING

Until the device is fixed, do not connect hazardous voltages to the device. The
following operations should only be carried out on a disconnected device and under
ESD safe conditions:
General mounting, connection and disconnection of Modbus cable.
Troubleshooting the device.

Repair of the device must be done by Omega A/S only.

CAUTION

Section 1.2 - Symbol Identification

Triangle with an exclamation mark: Read the manual before installation
and commissioning of the device in order to avoid incidents that could lead
to personal injury or mechanical damage.

The CE mark proves the compliance of the device with the essential
requirements of the directives.

The double insulation symbol shows that the device is protected by double
or reinforced insulation.

WARNING

4

2

Safety Instructions

Section 2 - Safety instructions

Receipt and unpacking

Unpack the device without damaging it and check whether the device type corresponds to the one ordered. The packing should
always follow the device until this has been permanently mounted.

Environment

The device is manufactured for indoor use. Avoid direct sunlight, dust, high temperatures, mechanical vibrations and shock, as
well as rain and heavy moisture. If necessary, heating in excess of the stated limits for ambient temperatures should be avoided
by way of ventilation.

The device may be used in Overvoltage Category II, Pollution Degree 2 at an altitude up to 2000 m.

Mounting

Only qualified technicians who are familiar with the technical terms, warnings, and instructions in this installation guide and
who are able to follow these should connect the device. Only devices which are undamaged and free of moist and dust may be
installed. The device may be installed and supplied by Omega DRST series only.
Should there be any doubt as to the correct handling of the device, please contact your local distributor or, alternatively,

Calibration and Adjustment

During calibration and adjustment, the measuring and connection of external voltages must be carried out according to the
specifications of this manual. The technician must use tools and instruments that are safe to use.

Cleaning

When disconnected, the device may be cleaned with a cloth moistened with distilled water.

IECEx, ATEX installation in Zone 2

IECEx DEK 13.0026 X .............................................. Ex nA IIC T5 Gc

DEKRA 13ATEX0098 X ............................................ II 3 G Ex nA IIC T5 Gc

For safe installation the following must be observed

The device must be installed by qualified personnel who are familiar with the national and international laws, directives and
standards that apply to this area.

Year of manufacture can be taken from the first two digits in the serial number.

The devices must be installed in a suitable enclosure providing a degree of protection of at least IP54 according to EN60529,
taking into account the environmental conditions under which the equipment will be used.

To prevent ignition of the explosive atmospheres do not separate connectors when energized and an explosive gas mixture is
present.

To avoid the risk of explosion due to electrostatic charging of the enclosure, do not handle the units unless the area is known to
be safe, or appropriate safety measures are taken to avoid electrostatic discharge.

Liability

To the extent the instructions in this manual are not strictly observed, the customer cannot advance a demand against Omega
A/S that would otherwise exist according to the concluded sales agreement.

5