Omega DRST-UR User manual

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DRST-UR
Universal Transmitter with Relays
TM
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omega.com
User’s Guide

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.
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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: [email protected]
For Other Locations Visit omega.com/worldwide

3
DRST-UR
Table of
Contents
Table of Contents
Section ........................................................................ Page
Section 1 Warning .......................................................................................... 5
Section 2 Symbol Identification .................................................................. 6
Section 2.2 Safety Instructions ....................................................... 6
Section 3 How to dismantle DRST-UR ...................................................... 8
Section 3.2 Front LED lights red/display shows AO.ER .......... 8
Section 4 Features ........................................................................................... 9
Section 4.1 Universal Transmitter DRST-UR .............................. 9
Section 4.2 Advanced features ...................................................... 9
Section 4.3 Application ................................................................... 9
Section 4.4 Technical characteristics ............................................. 9
Section 5 Display Characteristics ............................................................. 10
Section 5.1 Functionality .............................................................. 10
Section 5.2 Application ................................................................. 10
Section 5.3 Technical characteristics (display) .......................... 10
Section 5.4 Mounting/installation .............................................. 10
Section 6 Mounting / demounting ............................................................ 11
Section 7 Inputs Application ...................................................................... 12
Section 8 Order codes / Specifications ............................................... 13-16
Section 8.2 Electrical specifications ............................................ 13
Section 9 Visualisation in the DRSL-DISPLAY of sensor error detection
17
Section 10 Error Indications ......................................................................... 18
Section 11 Connections ................................................................................. 19
Section 12 Block Diagram ............................................................................. 20
Section 13 Configuration / operating the function keys ......................... 21
Section 14 Signal & Sensor error display ................................................... 22

DRST-UR
Table of
Contents
Table of Contents
Section ........................................................................ Page
Section 15 Latch ............................................................................................... 23
Section 15.1 Manual deactivation of the latch .......................... 24
Section 15.2 Advanced functions ................................................ 24
Section 15.3 Display setup ........................................................... 24
Section 15.4 Two-point process calibration ............................... 24
Section 15.5 Process simulation function ................................... 24
Section 15.6 Password .................................................................. 24
Section 15.7 Language .................................................................. 24
Section 16 Auto Diagnosis ............................................................................ 25
Section 17 Units/safety/memory .................................................................. 26
Section 18 Routing diagram .................................................................... 27-32
Section 18.1 Routing Diagram ............................................... 27-30
Section 18.2 Advanced settings ................................................... 31
Section 18.3 Manual Deactivation .............................................. 32
Section 19 Scrolling help text in Display ................................................... 33
Section 20 Graphic Depication of Latch ..................................................... 34
Section 20.1 latch function setpoint ............................................ 35
Section 20.2 latch function window ........................................... 35
Section 20.3 Relay action setpoint ............................................... 36
Section 20.4 Relay action window .............................................. 36
Section 21 Displays .................................................................................. 37-38

Warning
5
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 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 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.
GENERAL
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:
• Dismantlement of the device for setting of DIP-switches
and jumpers.
• General mounting, connection and disconnection of wires.
Troubleshooting the device.
Repair of the device and replacement of circuit breakers must be done by
A/S only.
HAZARDOUS
VOLTAGE
1
WARNING
To keep the safety distances, the relay contacts on the device must not be
connected to both hazardous and non-hazardous voltages at the same time.
SYSTEM 4000 must be mounted on a DIN rail according to DIN 46277.
INSTALLATION
WARNING
Do not open the front plate of the device as this will cause damage to the
connector for the display/programming front Omega DRSL-DISPLAY. This
device contains no DIP-switches or jumpers.

6
Symbol Identification
2
Section 2.2 - Safety instructions
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.
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.
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.
Mounting
Only technicians who are familiar with the technical terms, warnings, and instructions 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,
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.
Section 2.1 - Symbol Identification

7
Safety Instructions 2
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 telling it will switch off the voltage to the device.
Year of manufacture can be taken from the first two digits in the serial number.
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
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.
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.
Cleaning
When disconnected, the device may be cleaned with a cloth moistened with distilled water.
Liability
To the extent that the instructions in this manual are not strictly observed, the customer cannot advance a demand against
PR electronics A/S that would otherwise exist according to the concluded sales agreement.
To the extent the instructions in this manual are not strictly observed, the customer cannot advance a demand against PR
electronics A/S that would otherwise exist according to the concluded sales agreement.

8
Section 3.1 - How to Dismantle DRST-UR
How to Dismantle DRST-UR
3
First, remember to demount the connectors with hazardous voltages.
Picture 1: Detach the device from the DIN rail by lifting the bottom lock.
Section 3.2 - When front LED lights red / display shows AO.ER
Omega DRST-UR 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 and disables the relays. 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.

9
Features 4
Section 4.1 - Universal Transmitter DRST-UR
• Input for RTD, TC, Ohm, potentiometer, mA and V
• 2-wire supply > 16 V
• FM-approved for installation in Div. 2
• Output for current, voltage and 2 relays
• Universal AC or DC supply
Section 4.2 - Advanced features
• Programmable via detachable display front (DRSL-DISPLAY), process calibration, signal and relay
simulation, password protection, error diagnostics and selection of help text in several languages.
Section 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 potentiometer.
• Power supply and signal isolator for 2-wire transmitters.
• Process control with 2 pairs of potential-free relay contacts and analogue output.
• Galvanic separation of analogue signals and measurement of floating signals.
• The DRST-UR is designed according to strict safety requirements and is thus suitable for application
in SIL 2 installations.
Section 4.4 - Technical characteristics
• When DRST-UR is used in combination with the DRSL-DISPLAY/programming front, all
operational parameters can be modified to suit any application. As the DRST-UR 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. A yellow LED is ON for each
active output relay.
• Continuous check of vital stored data for safety reasons.
• 4-port 2.3 kVAC galvanic isolation.

10
Display Characteristics
5
Section 5.1- Display / programming front
Functionality
The simple and easily understandable menu structure and the explanatory help texts guide you
effortlessly and automatically through the configuration steps, thus making the product very easy to
use. Functions and configuration options are described in the section ”Configuration / operating the
function keys”.
Section 5.2 - Application
• Communications interface for modification of operational parameters in DRST-UR.
• Can be moved from one DRST-UR device to another and download the configuration of the first
transmitter to subsequent transmitters.
• Fixed display for readout of process data and status.
Section 5.3 - Technical characteristics
• LCD display with 4 lines; Line 1 (H=5.57 mm) shows input signal, line 2 (H=3.33 mm) shows units,
line 3 (H=3.33 mm) shows analogue output or tag no. and line 4 shows communication and relay
status.
• Programming access can be blocked by assigning a password. The password is saved in the
transmitter in order to ensure a high degree of protection against unauthorised modifications to the
configuration.
Section 5.4 - Mounting / installation
• Click DRSL-DISPLAY onto the front of DRST-UR.