Orbit Merret OM 402LC User manual

OM 402LC
4 DIGIT PROGRAMMABLE
INSTRUMENT
DISPLAY INSTRUMENT FOR TENSIOMETER
GUARANTEE
YEARS

2|INSTRUCTIONS FOR USE OM 402LC
SAFETY INSTRUCTIONS
Please, read the enclosed safety instructions carefully and observe them!
These instruments should be safeguarded by isolated or common fuses (breakers)!
For safety information the EN 61 010-1 + A2 standard must be observed.
This instrument is not explosion-safe!
TECHNICAL DATA
Measuring instruments of the OM 402 series conform to the European regulation 89/336/EWG.
The instruments are up to the following European standards:
EN 55 022, class B
EN 61000-4-2, -4, -5, -6, -8, -9, -10, -11
The instruments are applicable for unlimited use in agricultural and industrial areas.
CONNECTION
Supply of energy from the main line has to be isolated from the measuring leads.
ORBIT MERRET, spol. sr.o.
Vodnanska 675/30
19800 Prague 9
Czech Republic
Tel: +420 - 281040200
Fax: +420 - 281040299
e-mail: [email protected]
www.orbit.merret.cz

INSTRUCTIONS FOR USE OM 402LC |3
1CONTENTS
1. Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Instrument description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. Instrument connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4. Instrument setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Symbols used in the instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Setting the DP and the (-) sign . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Control keys function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Setting/permitting items into “USER” menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
5. Setting “LIGHT” menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.0 Description “LIGHT” menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Setting input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Setting Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Setting analog output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Selection of programming menu „LIGHT“/„PROFI“. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Restoration of manufacture setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Manual calibration - input range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Selection of instrument menu language version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Setting new access password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Instrument identification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6. Setting “PROFI” menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6.0 Description of “PROFI” menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6.1 “PROFI” menu - INPUT
6.1.1 Resetting internal values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
6.1.2 Setting measuring range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
6.1.3 Setting the Real Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
6.1.4 External input function selection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
6.1.5 Optional accessory functions of the keys. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
6.2 “PROFI” menu - CHANNEL
6.2.1 Setting measuring parameters (projection, filters, decimal point, description) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
6.2.2 Setting mathematic functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
6.2.3 Selection of evaluation of min/max. value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
6.3 “PROFI” menu - OUTPUT
6.3.1 Setting data logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
6.3.2 Setting Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
6.3.3 Setting data output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
6.3.4 Setting analog output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
6.3.5 Selection of display projection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
6.4 “PROFI” menu - SERVICE
6.4.1 Selection of programming menu „LIGHT“/„PROFI“ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
6.4.2 Restoration manufacture setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
6.4.3 Manual calibration - input range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
6.4.4 Selection of instrument menu language version. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
6.4.5 Setting new access password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
6.4.6 Instrument identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
7. Setting items into “USER” menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
7.0 Configuration “USER” menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
8. Data protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
9. Error statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
10. Table of symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
11. Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
12. Instrument dimensions and instalation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
13. Certificate of guarantee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Declaration of conformity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

4|INSTRUCTIONS FOR USE OM 402LC
2.1 Description
The OM 402LC model is 4 digit panel programmable instrument designed for DMS sensors connection.
The instrument is based on an 8-bit microcontroller with a multichannel 24-bit sigma-delta converter, which secures high
accuracy, stability and easy operation of the instrument.
PROGRAMMABLE PROJECTION
Measuring range: adjustable in menu (0,2…4 mV/V; 0,4…8 mV/V; 0,8…16 mV/V)
Setting: manual, optional projection on the display may be set in the menu for both limit values of the input
signal
Projection: -9999…9999 (-99999…999999)
LINEARIZATION
Linearization: by linear interpolation in50 points (solely via OM Link)
TENSIOMETER VOLTAGE
Fixed: 10 VDC, max. load 80 Ohm
DIGITAL FILTERS
Floating average: from2…30 measurements
Arithmetic. average: from2…100 measurements
Exponen. average: from2…100 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, 1/x, logarithm, exponential, power, root
EXTERNAL CONTROL
Lock: control keys blocking
Hold: display/instrument blocking
Tare: tare activation/resetting tare to zero
Resetting MM: resetting min/max value
Memory: data storage into instrument memory
INSTRUMENT DESCRIPTION2

INSTRUCTIONS FOR USE OM 402LC |5
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 change)
- 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 freely accessible (www.orbit.merret.cz) and the only requirement is the
purchase of OML cable to connect the instrument to PC. It is manufactured in version RS 232 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 enable you to connect one instrument with the option of visualiza-
tion and archiving in PC. The OM Link „Standard“ version has no limitation of the number of instruments connected.
2.3 Options
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 0...99,9 s. Reaching the preset limits is signalled by LED and simultaneously by the
switch-on of the relevant relay.
Data outputs are for their rate and accuracy suitable for transmission of the measured data for further projection or directly
into the control systems. We offer an isolated RS232 and RS485 with the ASCII or DIN MessBus protocol.
Analog outputs will find their place in applications where further evaluating or processing of measured data is required in
external devices. We offer universal 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.
Measured data record is an internal time control of data collection. It is suitable where it is necessary to register measured
values. Two modes may be used. FAST is designed for fast storage (40 records/s) of all measured values up to 8000
records. Second mode is RTC, where data record is governed by Real Time with data storage in a selected time segment
and cycle. Up to 250 000 values may be stored in the instrument memory. Data transmis sion into PC via serial interface
RS232/485 andOM Link.
2INSTRUMENT DESCRIPTION

6|INSTRUCTIONS FOR USE OM 402LC
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.
INSTRUMENT CONNECTION3
14 15 16 17
EXT. 1 EXT. 3 EXT. 2
+
-
5
8 9 10
L
N SUPPLY
E
1 2 3
11 12 13
5 6 7
IV V VI
III II I
L4 L3
L2 L1
RxD/L+
TxD/L-
GND
AO-I
AO-U
GND
4
E 1 C 2 E 2 C 1
Relays
SSR
Open collector
Open collector
C 3
E 4
C 4
E 3
ABC D E FGH
DMS supply
Shielding
Sense
-DMS supply
+
+
+
Sense
INPUT
INPUT
-
-
Signal „SENSE“ measures supply voltage on tension-
meter upon 6-wire connection, for 4-wire connection
join brackets B+C andF+G directly on the instrument.
Whenusing the instrument in highly disturbing enviro-
nemnt we recommend using 4-wire connection.
!
Grounding on terminal block 3 has to be connected
at all times
!
Terminal block “Shielding” is designed for connect-
ing shielding of the supply lead (connected only on
the side of the instrument).
The “Shielding” and “GND” terminal blocks MUST
NOT be connected
!

INSTRUCTIONS FOR USE OM 402LC |7
Selection of jumpers
3INSTRUMENT CONNECTION
no calibration enabled
yes calibraction disabled
X1 - Calibration
X1
X2
no Battery off
yes Battery on
X2 - Battery for RTC

8|INSTRUCTIONS FOR USE OM 402LC
• For trained users
• Only items necessary for instrument
setting
• Access is password protected
• Possibility to arrange items of the
„User“ menu
• Linear menu structure
• For expert users
• Complete instrument menu
• Access is password protected
• Possibility to arrange items of the
„User“ menu
• Tree menu structure
Setting PROFISetting LIGHT
• 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)
Setting USER
4INSTRUMENT SETTING

INSTRUCTIONS FOR USE OM 402LC |9
4INSTRUMENT SETTING
4.1 Setting
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 change)
- 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 freely accessible (www.orbit.merret.cz) and the only requirement is the purchase of OML cable to con-
nect the instrument to PC. It is manufactured in version RS 232 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).
Scheme of processing the measured signal
CHAN. A
FILTER
MAT.FCE.
Relays
Analog
Memory
Min/Max
Data
Linearization
Input
Linearization Display

10 |INSTRUCTIONS FOR USE OM 402LC
Setting and controlling the instrument is performed by means of 5 control keys located on the front panel. With the aid of
these keys it is possble to browse through the operation menu and to select and set required values.
Symbols used in the instructions
DEF values preset from manufacture
42symbol indicates a flashing light (symbol)
MIN inverted triangle indicates the item that can be placed in USER menu
CONECT.broken line indicates a dynamic item, i.e. it is displayed only in particular selection/version
after pressing the key the set value will not be stored
after pressing the key the set value will be stored
30
continues on page 30
Setting the decimal point and the minus sign
DECIMAL POINT
Its selection in the menu, upon modification of the number to be adjusted it is performed by the control key with transition
beyond the highest decade, when the decimal point starts flashing . Positioning is performed by /.
THE MINUS SIGN
Setting the minus sign is performed by the key on higher decade. When editing the item substraction must be made from
the current number (e.g..: 013 > , on class 100 > -87)
12 T34M
85.42
Ralay status (red LED)
ON the digit is lit
OFF the digit is not lit
OFF the digit is flashing
limits withrestriction
(hysteresis, delay)
Function (green LED)
M Min/max. value
T Tare
Measured value (red/green LED)
the last two places may display
measuring units
INSTRUMENT SETTING4