Omega DRST-UN User Manual

TM

User’s Guide

Shop online at

omega.com

e-mail: [e-mail]

For latest product manuals:

www.omegamanual.info

DRST-UN

Universal Transmitter

omega.com [e-mail]

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-UN MV Transmitter

Table of Contents

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

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

Section 2 Instructions ..................................................................................... 6

2.1 Definitions .................................................................................. 6

2.2 Receipt and Unpacking ............................................................ 5

2.3 Environment .............................................................................. 6

2.4 Mounting ..................................................................................... 6

2.5 UL Installation Requirements ................................................. 7

2.6 Calibration and Adjustment .................................................... 7

2.7 Normal Operation ..................................................................... 7

2.8 Cleaning ..................................................................................... 7

2.9 Liability ....................................................................................... 7

Section 3 Demounting .................................................................................... 8

3.1 How to demount DRST-UN .................................................... 8

Section 4 Characteristics ................................................................................ 9

4.1 Universal Transmitter DRST-UN ........................................... 9

4.2 Advanced Features ................................................................... 9

4.3 Application ................................................................................ 9

4.4 Technical characteristics ........................................................... 9

Section 5 Display and Programming front ............................................... 10

5.1 Functionality ............................................................................ 10

5.2 Application .............................................................................. 10

5.3 Technical characteristics ........................................................ 10

Section 6 Mounting and Demounting ....................................................... 11

6.1 Mounting and Installation ..................................................... 11

6.2 Mounting / demounting the DRSL-DISPLAY ................... 11

6.3 Demounting of DRSL-DISPLAY ........................................... 11

Section 7 Applications .................................................................................. 12

7.1 Inputs Signals ....................................................................................... 12

7.2 Output Signals ......................................................................... 12

7.3 Supply ....................................................................................... 12

Section 8 Specifications ................................................................................ 13

8.1 Order codes .............................................................................. 13

8.2 Electrical Specifications .................................................... 13-14

8.3 TC Input ............................................................................. 15-18

3

DRST-UN MV Transmitter

Table of Contents

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

Section 9 Diagrams ........................................................................................ 19

9.1 Connections ............................................................................. 19

9.2 Block Diagram ......................................................................... 20

9.3 Routing Diagram .................................................................... 21

9.4 Routing Diagram Advanced Settings ................................... 22

Section 10 Configuration / Operation ......................................................... 23

10.1 General ................................................................................... 23

10.2 Password Protection ............................................................. 23

10.3 Signal and sensor error info (Display front DRSL-DISPLAY) .... 23

10.4 Signal and sensor error info (no display) ........................... 24

10.5 Advanced Functions ............................................................. 24

10.6 Display setup ......................................................................... 24

10.7 Two-point process calibration ............................................. 24

10.8 Process simulation function ................................................ 25

10.9 Password ................................................................................ 25

10.10 Language .............................................................................. 25

10.11 Auto diagnosis .................................................................... 26

10.12 Selection of units ................................................................. 26

10.13 Safety readback ................................................................... 26

10.14 CJC ........................................................................................ 27

10.15 Memory ................................................................................ 27

Table of

Contents

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
manual must be observed and the guidelines fol lowed. 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 manual 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 wires.
Troubleshooting the device.

1

INSTALLATION

Repair of the device and replacement of circuit breakers must be done by
PR electronics A/S only.

WARNING

DRST-UN must be mounted on a DIN rail according to DIN 46277.

WARNING

Do not open the front plate of the module as this will cause damage to
the connector for the display / programming front DRSL-DISPLAY.
This module contains no DIP-switches or jumpers.

1.2 - Symbol Identification

Triangle with an exclamation mark: Warning / demand.
Potentially lethal situations.

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.

5

2

Instructions

Section 2 - Instructions

2.1 - Definitions

Hazardous voltages have been defined as the ranges: 75 to 1500 Volt DC, and 50 to 1000
Volt AC.
Technicians are qualified persons educated or trained to mount, operate, and also
troubleshoot technically correct and in accordance with safety regulations.
Operators, being familiar with the contents of this manual, adjust and operate the knobs
or potentiometers during normal operation.

2.2 - Receipt and Unpacking

Unpack the module without damaging it. The packing should always follow the module
until this has been permanently mounted.
Check at the receipt of the module whether the type corresponds to the one ordered.

2.3 - Environment

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.
All devices fall under Installation Category II, Pollution Degree 1, and Insulation Class II.

2.4 - Mounting

Only technicians who are familiar with the technical terms, warnings, and instruc tions in
the manual and who are able to follow these should connect the device.

Should there be any doubt as to the correct handling of the device, please contact your
local distributor or, alternatively, Mounting and connection of the device should comply
with national legislation for mounting of electric materials, i.e. wire cross section,
protective fuse, and location. Descriptions of input / output and supply connections are
shown in the block diagram and side label.

The following apply to fixed hazardous voltages-connected devices:

The max. size of the protective fuse is 10 A and, together with a power switch, it
should be easily accessible and close to the device. The power switch should be
marked with a label indicating that it will switch off the volt age to the device.

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

6

Section 2.5 - UL Installation Requirements

Use 60/75°C copper conducters only
For use only in pollution degree 2 or better
Max. ambient temperature - 60°C
Max. wire size - AWG 26-14
UL file number - E231911

Section 2.6 - 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.

Section 2.7 - Normal Operation

Operators are only allowed to adjust and operate devices that are safely fixed in
panels, etc., thus avoiding the danger of personal injury and damage. This means there
is no electrical shock hazard, and the device is easily accessible.

Instructions

2

Section 2.8 - Cleaning

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

Section 2.9 - Liability

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

7

3

Demounting

Section 3.1 - How to demount DRST-UN

First, remember to demount the connectors with hazardous voltages.
Picture 1: Detach the device from the DIN rail by lifting the bottom lock.

When front LED lights red / display shows AO.ER

PR DRST-UN is designed as a SIL 2 device with a high safety level. Therefore, a
continuous measurement of the outgoing current is carried out on a 4...20 mA and

20...4 mA output signal. If the current output signal is different from the internal
calculated output value or the current output is 0 (due to e.g. an open circuit
breakage), an error mode switches on the red front LED.
This function is not a default option but must be actively selected via the
programming menu (S4-20 & S20-4).
The error mode can only be reset by switching off and then switching on the supply
voltage to the device.

8

Section 4.1 - Universal Transmitter DRST-UN

• Input for RTD, TC, Ohm, potentiometer, mA and V

• 2-wire supply > 16 V

• Output for current and voltage

• Universal AC or DC supply

4.2 - Advanced Features

Programmable by way of detachable display front DRSL-DISPLAY, process

calibration, signal simulation, password protection, error diagnostics and help
text available in several languages.

4.3 - Application

• Linearised, electronic temperature measurement with RTD or TC sensor.

• Conversion of linear resistance variation to a standard analogue current /
voltage signal, i.e. from solenoids and butterfly valves or linear movements
with attached potentio meter.

Characteristics

4

• Power supply and signal isolator for 2-wire transmitters.

• Process control with standard analogue output.

• Galvanic separation of analogue signals and measurement of floating signals.

• The DRST-UN is designed according to strict safety requirements and is thus
suitable for application in SIL 2 installations.

4.4 - Technical characteristics

• When DRST-UN is used in combination with the DRSL-DISPLAY display/
programming front, all operational parameters can be modified to suit any
application. As the DRST-UN is designed with electronic hardware switches,
it is not necessary to open the device for setting of DIP-switches.

• A green / red front LED indicates normal operation and malfunction.

• Continuous check of vital stored data for safety reasons.

• 3-port 2.3 kVAC galvanic isolation.

9