Orbit Merret OM 602RS User manual

OM RS
 DIGIT DATA DISPLAY
RS /
ASCII/MESSBUS/PROFIBUS
USER MANUAL
Outstanding Measurement Value

USER MANUAL OM 602RS | 3
OM RS
 DIGIT DATA DISPLAY
RS /
ASCII/MESSBUS/PROFIBUS
WARRANT Y
YEARS

4 | USER MANUAL OM 602RS
TECHNICAL SPECIFICATIONS
Instruments of the OM  series comply with the EU //EU a//EU directive and meet the following European
standards:
EN - Electrical safety
EN - Electrical measuring, control and laboratory equipment
- EMC requirements "Industrial Area"
IEC : , c.  Seismic resistance
The device is suitable for unlimited use in agricultural and industrial areas.
SAFETY INSTRUCTIONS
Please read and observe the enclosed safety instructions carefully!
Installation, all operations, maintenance and service must be carried out by qualified personnel only
and in accordance with the enclosed information and safety regulations.
The manufacturer is not responsible for any damage caused by improper installation, configuration, maintenance and
service of the device.
The device must be installed correctly according to the actual application. Improper installation may cause malfunction,
which may result in damage to the unit or an accident.
The device uses dangerous voltage that can cause a fatal accident. The unit must be disconnected from the power supply
before starting troubleshooting (in case of malfunction) or before dismantling the unit. For safety information, EN  -
+ A must be observed.
When removing orinserting an electronics card, observe the safetyinstructions and follow the recommended procedures.
Disconnect the unit from power supply before inserting / extracting any electronics cards.
Do not attempt to repair ormodifythe device yourself. In case of malfunction the device must be dismounted and submitted
to the manufacturer for repair.
These devices should be protected by either individual or shared fuses (circuit breakers)!
The device is not intended for installation in explosive areas. Use the device only outside the explosive areas.
DANGER WARNING ATTENTION
RISK OF ELECTRIC SHOCK
-Disconnectallpowersupplyandlivewires
before servicing.
RISKS ASSOCIATED WITH USE
- Do not use this product in a safety
critical system.
- Do not disassemble, repair or modify
the product.
- Do not use the product outside the
recommended operating conditions.
RISKS ASSOCIATED WITH USE
- Install a 100 mA fuse
Failure to followthis instruction will result
in death or serious injury.
Failure to follow these instructions may
result in death, serious injury, or damage
to the equipment
Failure to observe this precaution could
result in personal injury or equipment
damage.
This electrical equipment may be installed, operated and maintained only by qualified personnel.
ORBIT MERRET assumes no responsibility for any consequences arising from the use of this equipment.

USER MANUAL OM 602RS | 5
.CONTENTS
. CONTENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. INSTRUMENT DESCRIPTION. . . . . . . . . . . . . . . . . . . .
. INSTRUMENT CONNECTION . . . . . . . . . . . . . . . . . . . .
Measuring ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Instrument connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
. INSTRUMENT SETTING . . . . . . . . . . . . . . . . . . . . . . .
Symbols used in the instructions. . . . . . . . . . . . . . . . . .
Setting the DP and the (-) sign. . . . . . . . . . . . . . . . . . . .
Control keys function. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting/permitting items into “USER” menu . . . . . . .
. SETTING “LIGHT” MENU . . . . . . . . . . . . . . . . . . . . . .
. Description “LIGHT” menu . . . . . . . . . . . . . . . . . . . . . 
Setting input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting analog output . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selection of programming menu „LIGHT“/„PROFI“
Restoration of manufacture setting . . . . . . . . . . . . . . .
Selection of instrument menu
language version. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting new access password . . . . . . . . . . . . . . . . . . . .
Instrument identification. . . . . . . . . . . . . . . . . . . . . . . . . .
. SETTING “PROFI” MENU. . . . . . . . . . . . . . . . . . . . . .
. Description of “PROFI” menu. . . . . . . . . . . . . . . . . . . 
. “PROFI” menu - INPUT
.. Resetting internal values.. . . . . . . . . . . . . . . . . . .
.. Setting instruments. . . . . . . . . . . . . . . . . . . . . . . .
.. External input function selection . . . . . . . . . . .
.. Optional accessory functions of the keys . . .
. “PROFI” menu - Channel
.. Setting input parameters. . . . . . . . . . . . . . . . . . .
.. Setting mathematic functions . . . . . . . . . . . . . .
.. Selection of evaluation of min/max. value. . .
. “PROFI” menu - OUTPUT
.. Setting Limits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. Setting analog output. . . . . . . . . . . . . . . . . . . . . .
.. Selection of display projection . . . . . . . . . . . . .
. “PROFI” menu - SERVICE
.. Selection of programming menu
„LIGHT“/„PROFI“ . . . . . . . . . . . . . . . . . . . . . . . . . .
.. Restoration manufacture setting . . . . . . . . . . .
.. Selection of instrument menu
language version . . . . . . . . . . . . . . . . . . . . . . . . . .
.. Setting new access password . . . . . . . . . . . . . .
.. Instrument identification . . . . . . . . . . . . . . . . . . .
. SETTING ITEMS INTO “USER” MENU . . . . . . . . . . . .
. DATA PROTOKOL . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. ERROR STATEMENTS . . . . . . . . . . . . . . . . . . . . . . . . .
. TABLE OF SYMBOLS . . . . . . . . . . . . . . . . . . . . . . . . .
. TECHNICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . .
. INSTRUMENT DIMENSIONS AND INSTALATION . .
. CERTIFICATE OF GUARANTEE . . . . . . . . . . . . . . . . .

6 | USER MANUAL OM 602RS
INSTRUMENT
DESCRIPTION.
2.1 DESCRIPTION
The OM 602RS type is a 4-digit panel display device for data from serial lines of RS 232 and RS 485 standard. Communication
with ASCII or MessBus protocol.
All ASCII symbols may be displayed which are usable for 7-segment display.
PROGRAMMABLE PROJECTION
Setting: input range - integer/float
Protocol: ASCII/MESSBUS
MODBUS - RTU*
PROFIBUS DP
Projection: -…
LINEARIZATION
Linearization: by linear interpolation in points (solely via OM Link)
DIGITAL FILTERS
Floating average: from… measurements
Exponen.average: from… measurements
Rounding: setting the projection step for display
MATHEMATIC FUCTIONS
Min/max. value: registration of min./max. value reached during measurement
Tare: designed to reset display upon non-zero input signal
Peak value: the display shows only max. or min. value
Mat. operations: polynome, /x, logarithm, exponential, power, root, sin x
EXTERNAL CONTROL
Lock: control keys blocking
Hold: display/instrument blocking
Tare: tare activation/resetting tare to zero
Resetting MM: resetting min/max value
*This protocol has separate instructions

USER MANUAL OM 602RS | 7
.
INSTRUMENT
DESCRIPTION
2.2 OPERATION
The instrument is set and controlled by five control keys located on the front panel. All programmable settings of the instrument
are performed in three adjusting modes:
LIGHT Simple programming menu
- contains solely items necessary for instrument setting and is protected by optional number code
PROFI Complete programming menu
- contains complete instrument menu and is protected by optional number code
USER User programming menu
- may contain arbitrary items selected from the programming menu (LIGHT/PROFI), which determine
the right (see or CHANNge)
- acces without password
All programmable parameters are stored in the EEPROM memory (they hold even after the instrument is switched off).
Complete instrument operation and setting may be performed via OM Link communication interface, which is a standard
equipment of all instruments.
The operation program is freelyaccessible (www.orbit.merret.cz) and the onlyrequirement is the purchase of OML
cable to connect the instrument to PC. It is manufactured in version RS  andUSB and is compatible with all
ORBIT MERRET instruments. Another option for connection is with the aid of data output RS 232 or RS 485 (without the need
of the OML cable).
The program OM LINK in „Basic“ version will enableyou to connect one instrument with the option of visualization and archiving
in PC. The OM Link „Standard“ version has no limitation of the number of instruments connected.
2.3 OPTIONS
Excitation is suitable for supplying power to sensors and transmitters. It has a galvanic separation.
Comparators are assigned to monitor one, two, three or four limit values with relay output. The user may select limits regime:
LIMIT/DOSING/FROM-TO. The limits have adjustable hysteresis within the full range of the display as well as selectable delay
of the switch-on in the range of ..., s. Reaching the preset limits is signalled by LED and simultaneously by the switch-on
of the relevant relay.
Analog outputs will find theirplace in applications where furtherevaluating or processing of measured data is required in external
devices. We offer UNIVER.ersal analog output with the option of selection of the type of output - voltage/current. The value of
analog output corresponds with the displayed data and its type and range are selectable in Menu.

8 | USER MANUAL OM 602RS
INSTRUMENT
CONNECTION.
The instrument supply leads should not be in proximity of the incoming low-potential signals.
Contactors, motors with larger input power should not be in proximity of the instrument.
The leads into the instrument input (measured quantity) should be in sufficient distance from all power leads andappliances.
Provided this cannot be secured it is necessary to use shielded leads with connection to ground (bracket E).
The instruments are tested in compliance with standards for use in industrial area, yet we recommend to abide by the above
mentioned principles.
EXTERNAL INPUTS
DESCRIPTION CONTROL
EXT. According to setting in Menu
(see Menu > EXT. IN., page 46) upon contact, bracket (No. 14 and 15/16/17)
+
-
54
8 9 10
L
N POWER SUPPLY
E
1 2 3
11 12 13
5 6 7 14 15 16 17
IV V VI
III II I
L4
L3
L2 L1
EXT. 1 EXT. 3 EXT. 2
RxD/L+
TxD/L-
GND
AO-I
AO-U
GND
TxD
RxD
A B C D E F G H
Excitation
GND
+
-
L+
L-
RS 232
RS 485

USER MANUAL OM 602RS | 9
INSTRUMENT
CONNECTION .

10 | USER MANUAL OM 602RS
INSTRUMENT SETTING.
SETTING
PROFI
For expert users
Complete instrument menu
Access is password protected
Possibility to arrange items of the USER MENU
Tree menu structure
SETTING
LIGHT
For trained users
Only items necessary for instrument setting
Access is password protected
Possibility to arrange items of the USER MENU
Linear menu structure
SETTING
USER
For user operation
Menu items are set by the user (Profi/Light) as per request
Access is not password protected
Optional menu structure either tree (PROFI) or linear (LIGHT)