Omega | LDB-P | Owner Manual | Omega LDB-P Owner Manual

Omega LDB-P Owner Manual
TM
User’s Guide
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LDB-P
Process Meters
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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.
1. LDB-P Series
Large format industrial meters for process signals
Large format meters for long distance reading, for industrial • Configurable ‘Fast access’ to selected functions with key
‘UP’ (5) (see section 1.12.11)
applications. Different formats available with 4 and 6 digits,
with 60 mm and 100 m digit height. Front keypad to access the • ‘On power up’ for system protection on ‘cold’ start-up
configuration menu, and optional remote keypad.
and / or activation of automatic tare (see section 1.12.12)
Models to measure process signals in mA and Vdc. Provides • up to 20 segments for signal linearization (see section
excitation voltage configurable from +5 Vdc to +20 Vdc (max.
1.12.8)
35 mA) to power up transducers. Scalable reading with • ‘Field correction’ for fast and easy ‘on the field’ correction
selectable decimal point position.
of offsets and signal drifts (see section 1.12.3)
Output and control options with 1, 2 and 3 relays, transis- • alarms with 1 or 2 setpoints, independent activation and
tor outputs, controls for SSR relays, isolated analog outputs,
deactivation delays, hysteresis, manual unlocking, ... (see
communications in Modbus RTU, RS485 ASCII and RS232.
section 1.12.4)
Sturdy metal housing with full IP65 protection. Internal • ‘Tare’ function for weight applications (see section 1.12.14)
connections by plug-in screw clamp terminals, and output
through cable glands. Housing prepared for panel, wall and • ‘Peak & Hold’ for test break applications (see section 1.12.9)
Multiple display filters, memory of maximum and minimum
hanging mount.
reading, password protection, 5 brightness levels.
1.1 How to use this manual
If this is the first time you are configuring a large format Read all the manual sections in order to have a full and clear
meter, below are the steps to follow to install and configure view of the characteristics of the instrument. Do not forget
the instrument.
to read the installation precautions at section 1.17.
1. Identify the instrument format (see section 1.4)
5. If the instrument includes analog output (AO) or serial
communications (RTU, S4, S2)
2. Power and signal connections
- to include an option to an instrument see section 1.6
- open the instrument (see section 1.5)
- to configure an installed option, access the option
- connect the power (see section 1.7)
configuration menu (see section 1.12.20)
- connect the signal and select jumper mA/Vdc
- see section 2 for information regarding the output and
(see section 1.8)
control options available
- close the instrument (see section 1.5)
6. Install the instrument
3. Configure the instrument (see section 1.12)
- mount on panel, wall or hanging (see section 1.16)
- select the signal range, the decimal point position and
- adjust the brightness level according to your
scale the reading (see section 1.12.2)
environmental needs (see section 1.12.19)
4. Advanced configuration (optional)
- configure the instrument alarms (see section 1.12.4)
- configure the display filters (see section 1.12.7)
- configure the fast access (see section 1.12.11)
- configure the excitation voltage (see section 1.12.15)
- configure other functions : segment linearization
(1.12.8), ‘on power up’ (1.12.12), key ‘LE’ (1.12.13), tare
(1.12.14), password (1.12.16)
2
1.2 How to order
Format
Model
LDB-24 P
LDB-24 (60 mm, 4 digits)
LDB-26 (60 mm, 6 digits)
LDB-44 (100 mm, 4 digits)
LDB-46 (100 mm, 6 digits)
Power
H
-H (85-265 Vac
-L
Color
-
and 120-370 Vdc)
(11-36 Vdc isolated)
-R (red led)
-G (green led)
Option 2
Option 1
-R1
-AO
-RTU
-S4
-S2
-T1
-SSR
-0
(1 relay)
(analog output)
(Modbus RTU)
(RS-485)
(RS-232)
(1 transistor)
(1 control SSR)
(empty)
Option 3*
-
Others
-
*Option 3 available
with formats LDB-26
and LDB-46
1.3 Index
1. LDB-P Series . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1 How to use this manual . . . . . . . . . . . . . . . . 2
1.2 How to order . . . . . . . . . . . . . . . . . . . . . . 3
1.3 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.4 Sizes and formats . . . . . . . . . . . . . . . . . . . . 4
1.4.1 Format LDB-24 . . . . . . . . . . . . . . . . . . . 4
1.4.2 Format LDB-44 . . . . . . . . . . . . . . . . . . . 4
1.4.3 Format LDB-26 . . . . . . . . . . . . . . . . . . . 5
1.4.4 Format LDB-46 . . . . . . . . . . . . . . . . . . . 5
1.5 To access the instrument . . . . . . . . . . . . . . . 6
1.6 Modular system . . . . . . . . . . . . . . . . . . . . 6
1.7 Power connections and protective earth . . . . . . . 7
1.8 Input signal connections . . . . . . . . . . . . . . . . 7
1.8.1 Connection examples . . . . . . . . . . . . . . . . 8
1.9 Connections for remote keypad . . . . . . . . . . . . 8
1.10 Functions included . . . . . . . . . . . . . . . . . . 8
1.11 Technical specifications . . . . . . . . . . . . . . . . 9
1.12 Configuration . . . . . . . . . . . . . . . . . . . . . 10
1.12.1 How to operate the menus . . . . . . . . . . . 10
1.12.2 Initial set-up . . . . . . . . . . . . . . . . . . . . 11
1.12.3 Field correction . . . . . . . . . . . . . . . . . . 12
1.12.4 Alarms . . . . . . . . . . . . . . . . . . . . . . . 12
1.12.5 Field correction menu . . . . . . . . . . . . . . 13
1.12.6 Alarms configuration menu . . . . . . . . . . . 13
1.12.7 Display filters . . . . . . . . . . . . . . . . . . . 14
1.12.8 Segment linearization . . . . . . . . . . . . . . 14
1.12.9 Display filters configuration menu . . . . . . . 15
1.12.10 Tools configuration menu . . . . . . . . . . . . 15
1.12.11 Fast access . . . . . . . . . . . . . . . . . . . . 16
1.12.12 ‘on power up’ function . . . . . . . . . . . . . 16
1.12.13 ‘LE’ key . . . . . . . . . . . . . . . . . . . . . . 16
1.12.14 ‘Tare’ function . . . . . . . . . . . . . . . . . . 16
1.12.15 Excitation voltage . . . . . . . . . . . . . . . . 16
1.12.16 Password configuration . . . . . . . . . . . . . 18
1.12.17 Default factory configuration . . . . . . . . . . 18
1.12.18 Firmware version . . . . . . . . . . . . . . . . 18
1.12.19 Brightness configuration . . . . . . . . . . . . 18
1.12.20 Access to the options configuration menu . . 18
1.13 Factory configuration . . . . . . . . . . . . . . . . 19
1.14 Messages and errors . . . . . . . . . . . . . . . . . 19
1.15 Full configuration menu . . . . . . . . . . . . . . . 20
1.16 Mounting . . . . . . . . . . . . . . . . . . . . . . . 22
1.17 Installation precautions . . . . . . . . . . . . . . . 23
1.18 Warranty . . . . . . . . . . . . . . . . . . . . . . . 23
1.19 CE declaration of conformity . . . . . . . . . . . . 23
2. Output and control modules . . . . . . . . . . . . . . . 24
2.1 Module R1 . . . . . . . . . . . . . . . . . . . . . . . 24
2.2 Module T1 . . . . . . . . . . . . . . . . . . . . . . . 24
2.3 Module SSR . . . . . . . . . . . . . . . . . . . . . . 25
2.4 Module AO . . . . . . . . . . . . . . . . . . . . . . . 25
2.5 Module RTU . . . . . . . . . . . . . . . . . . . . . . 26
2.6 Module S4 . . . . . . . . . . . . . . . . . . . . . . . 26
2.7 Module S2 . . . . . . . . . . . . . . . . . . . . . . . 27
3
1.4 Sizes and formats
1.4.1 Format LDB-24
A
B
Power
Remote keypad
Option 2 Option 1
Size A
340 mm
Size B
135 mm
Size C
3 mm
Size D
55 mm
Size E
25 mm
Table 1 - Sizes LDB-24
Signal
E D C
Cut-out G
322 mm (±1)
Cut-out F
117 mm (±1)
Table 2 - Panel cut-out LDB-24
Cable glands
F
Input signal terminal
Remote keypad terminal
Slot for option 1
Slot for option 2
Power
Panel cut-out
(see Table 2)
G
1.4.2 Format LDB-44
A
B
Size A
542 mm
Size B
166 mm
Size C
3 mm
Size D
55 mm
Size E
25 mm
Table 3 - Sizes LDB-44
Power
Remote keypad
Option 2
Option 1
Signal
E D C
Cut-out G
524 mm (±1)
Cut-out F
148 mm (±1)
Table 4 - Panel cut-out LDB-44
F
Panel cut-out
(see Table 4)
G
4
1.4.3 Format LDB-26
A
B
Power
Remote keypad
Option 3 Option 2 Option 1
Size A
436 mm
Size B
135 mm
Size C
3 mm
Size D
55 mm
Size E
25 mm
Table 5 - Sizes LDB-26
Signal
E D C
Cut-out G
418 mm (±1)
Cut-out F
117 mm (±1)
Table 6 - Panel cut-out LDB-26
Cable glands
Input signal terminal
Remote keypad terminal
Slot for option 1
Slot for option 2
Slot for option 3
Power
Panel cut-out
(see Table 6)
F
G
1.4.4 Format LDB-46
A
B
Size A
740 mm
Size B
166 mm
Size C
3 mm
Size D
55 mm
Size E
25 mm
Table 7 - Sizes LDB-46
Power
Remote keypad
Option 3
Option 2
Option 1
Signal
E D C
Cut-out G
722 mm (±1)
Cut-out F
148 mm (±1)
Table 8 - Panel cut-out LDB-46
Panel cut-out
F (see Table 8)
G
5
1.5 To access the instrument
To open the housing, remove the screws from the back
cover. With each screw there is a metal washer and a plastic
washer. Once the screws are out, remove the back cover.
The figure below shows the instrument internal structure for
a LDB-26 format. It shows the location of the 3 slots for optional output and control modules, the power terminal and the
input signal terminal.
Watertight seal
Female turret
Back cover
To close the instrument, place the back cover, the screws,
the metal washer and the plastic washer. The plastic washer
is in contact with the back cover. Confirm that the screws are
correctly turning inside the internal female screws.
To ensure a correct IP65 protection tighten the back cover
screws with a strength between 30 and 40 Ncm, with the
help of a dynamometer screwdriver.
Power
Slot for option 3
Slot for option 2
Slot for option 1
Remote keypad terminal
Input signal terminal
Risk of electric shock. Removing the back
cover will grant access to the internal
circuits of the instrument. Operation must
be performed by qualified personnel only.
Screw
Metal washer
Plastic washer
1.6 Modular system
Large format meters are designed with an
internal modular architecture. The output and control
modules are independent and can be installed by accessing
the internal circuits of the instrument, and connecting the
module to the connection jumpers of the selected slot.
Output and control module
Slot 3
Cable tie
Tie base
Slot 2
(2)
(1)
Module pins
Connection jumpers
6
Each module is provided with a cable tie to fix the
module to the tie base. The input signal modules defines the
instrument function and are exchangeable, switching a
temperature meter to an impulse counter only by replacing
the input signal module.
See section 2. for information regarding the output and
control options available
Slot 1
To install an output and control module
(1) insert the ‘module pins’ into the
‘connection jumpers’ in one of the
free slots
(2) place the ‘cable tie’ into the ‘tie
base’ and embrace the ‘module’
firmly, until it is fixed
1.7 Power connections and protective earth
structure with the front metallic structure through an
1. Unscrew the screws from the back cover and remove the
internal green-yellow cable. (dotted cable at Figure 3).
back cover (see section 1.5).
2. Pass the power cable through the power cable gland 5. Connect phase and neutral (in AC power) or positive and
negative (in DC power) to the internal power terminal.
(see section 1.4).
3. Prepare the power cables so that the earth wire is 20 cm 6. The connections label attached to the outside of the
instrument has some free space left to write the color or
longer than the other cables (see Figure 1).
local code for each cable.
Phase (+)
20 cm
7. To comply with security regulation 61010-1, add to the
Neutral (-)
power line a protection fuse acting as a disconnection
Earth
element, easily accessible to the operator and identified
Figure 1 - Longer earth wire
as a protection device.
4. Connect the earth wire to the internal fixed screw ‘PE’
Power ‘H’
500 mA time-lag fuse
(see Figure 2) located at the inside of the back cover. The
Power ‘L’
1000 mA time-lag fuse
instrument internally connects the back cover metallic
PE
Power Terminal
(orange)
N
‘PE’ internal fixed screw
Power cable gland
L
fuse
Screws
Figure 2 - Location of the internal ‘PE’ fixed screw and power cable gland
PE
Figure 3 - Power connections
1.8 Input signal connections
1. Unscrew the screws from the back cover and remove the
back cover (see section 1.5).
2. Locate the input signal terminal (see section 1.4). For
signal connection examples see section 1.8.1
3. Pass the signal cable through the signal cable gland
(see section 1.4).
4. Connect the input signal cables (see Figure 4) and select
the appropriate jumper ‘mA’ or ‘Vdc’.
5. The connections label attached to the outside of the
instrument has some free space left to write the color or
local code for each cable.
V exc.
mA / Vdc
Common
Input Signal
3 2 1
mAVdc
mA / Vdc Input signal in mA or Vdc
Vexc
Excitation voltage to power the transducer
Common
Jumper mA Close for mA signals (and open Vdc)
Jumper Vdc Close for Vdc signals (and open mA)
Figure 4 - Signal connections
7
1.10 Functions included
1.8.1 Connection examples
signal mA
common
Input Signal
Functions included
Fast access menu
1.12.12
+ Vdc
Excitation voltage
configurable
1.12.15
0 Vdc
‘Measure’
yes
simple or double setpoint
activation delays
deactivation delays
hysteresis
inverted relays
locked alarms
yes, for high and low
signals
1.12.11
‘Peak & Hold’
yes
1.12.7
Tare function
yes
1.12.14
Memory
maximum, minimum
1.12.11
Password
configuration locked
1.12.16
Brightness
configurable, 5 levels
1.12.19
3 2 1
Alarms
mAVdc
Figure 6 - Connections for active 0/10 Vdc signals (or ±10 Vdc)
Field correction
V exc.
signal mA
3 2 1
mAVdc
Figure 7 - Connections for passive 4/20 mA signals (or ±20 mA)
V exc.
+ Vdc
0 Vdc
3 2 1
mAVdc
Figure 8 - Connections for passive 0/10 Vdc signals (or ±10 Vdc)
1.9 Connections for remote keypad
The 4 pin terminal located beside
the input signal module allows to
replicate a remote version of the
front keypad. Connect 4 cables for
front keys ‘SQ’ (<), ‘UP’ (5) and
‘LE’ (3) and for the common. Pass
these cables through the ‘remote
keypad’ cable gland (see section
1.4).
8
1.12.8
‘On Power Up’
Figure 5 - Connections for active 4/20 mA signals (or ±20 mA)
Input Signal
1.12.11
recursive
‘steps’
fixed digits
left zeros
yes
mAVdc
Input Signal
yes, configurable
Segment linearization up to 20 segments
Display filters
3 2 1
Input Signal
Section
GND
SQ
UP
LE
Table 9 - Functions included
1.12.7
1.12.4
1.12.3
1.11 Technical specifications
Digits
number of digits
digit
view angle
color
digit height
Reading
max., min.
decimal point
overrange / underrange
acquisitions
display refresh
step response
Input signal
signal ranges
maximum oversignal
input impedance
accuracy
thermal drift offset
thermal drift span*
wire section
Excitation voltage
voltage output
accuracy
maximum current
protection
Power
power ‘H’
4 or 6 (see Table 10)
7 segments
120º
red or green
(see Table 10)
85 to 265 Vac and 120 to 370 Vdc
isolated (isolation 2500 Vac)
power ‘L’
11 to 36 Vdc isolated
(isolation 1500 Vdc)
consumption
(see Table 10)
fuses
(see section 1.7)
wire section
max. 2.5 mm2
Configuration
front keypad with 3 keys
remote keypad (see section 3.1)
Output and control options relay output, analog retransmission,
Modbus RTU, ... (see section 2)
Mechanical
IP protection
full IP65 housing
mounting
panel, wall , hanging (see section
1.16)
connections
cable gland outputs
internal plug-in screw terminals
housing material
textured iron, black painted
methacrylate front filter
weight
(see Table 10)
front sizes
(see section 1.4)
panel cut-out
(see section 1.4)
depth
(see section 1.4)
Temperature
operation
from 0 to +50 ºC
storage
from -20 to +70 ºC
warm-up time
15 minutes
(see Table 10)
configurable
flash reading
(see Table 10)
(see Table 10)
(see Table 10)
4/20 mA, ±20 mA
0/10 Vdc, ±10 Vdc
100 mA or 100 Vdc
11 R en mA, 932 K en Vdc
0.05 % o 0.03 % (see Table 10)
10 ppm / ºC
25 ppm / ºC
(*included offset thermal drift)
max. 0.5 mm2
+20 Vdc, +15 Vdc, +10 Vdc, +5 Vdc
selectable by menu
±5 %
35 mA
against short circuit
Format LDB-24
Format LDB-44
Format LDB-26
Format LDB-46
4
4
6
6
60 mm
100 mm
60 mm
100 mm
Reading distance
25 meters
50 meters
25 meters
50 meters
Accuracy (% F.S.)
0.05 %
0.05 %
0.03 %
0.03 %
Acquisitions / second
15
15
3.5
3.5
Refresh / second
15
15
3.5
3.5
Step response (0 % to 99 % of signal)
120 mSec.
120 mSec.
300 mSec.
300 mSec.
Slots for output and control options
2
2
3
3
Number of digits
Digit height
Maximum / minimum reading
9999 / -1999
999999 / -199999
Consumption (without options installed)
3W
5.25 W
3.5 W
5.5 W
Consumption (with options installed)
5W
6.75 W
5.5 W
7W
2200 gr.
2500 gr.
3500 gr.
4500 gr.
Weight
Table 10 - Technical specifications associated to format
9
1.12 Configuration
1.12.1 How to operate the menus
The instrument has two menus accessible to the user :
Key ‘LE’ (3) - press the ‘LE’ (3) key to activate the configured special functions associated to this key. Inside the menu,
‘Configuration menu’ (key ‘SQ’) (<)
the ‘LE’ (5) acts as an ‘ESCAPE’. It leaves the selected menu
‘Fast access’ menu (key ‘UP’) (5)
level and eventually, by leaving all menu levels, it leaves
from the configuration menu. Then changes are applied and
Configuration menu
the instrument is back to normal function. When entering a
The ‘configuration menu’ modifies the configuration numerical value, it selects the active digit, and the value is
parameters to adapt the instrument to the application needs. then modified by key ‘UP’ (5).
To access the ‘configuration menu’ press for 1 second
the ‘SQ’ (<) key. This access can be blocked by activat- ‘Rollback’
ing the ‘Password’ (‘PASS’) function. While operating the After 30 seconds without interaction from the operator, the
‘configuration menu’, the alarm status is ‘hold’ to the instrument will rollback and leave the ‘configuration menu’
status it had before accessing the menu, and the output and or the ‘fast access’ menu. All changes will be discarded.
control modules remain in ‘error’ state. When leaving the
‘configuration menu’, the instrument applies a system re- Instruments with 4 and 6 digits
set, followed by a brief disconnection of the alarms and the The configuration menus included in this document show
output and control modules. Functionality is then recovered. values for a 6 digit instrument. In case of 4 digit instruments,
For a detailed explanation on the ‘configuration menu’ note that maximum reading values should be 9999 instead
see the following sections, and for a full view of the of 999999 to 9999 and minimum reading values should be
-1999 instead of -199999.
‘configuration menu’ see section 1.15.
‘Fast access’ menu
The ‘fast access’ menu is an operator configurable menu,
providing fast and direct access to the most usual functions
of the instrument with a single key pad stroke. Press key ‘UP’
(5) to access this menu.
See section 1.12.11 for a list of selectable functions for the
‘fast access’ menu in this instrument. The ‘Password’ (‘PASS’)
function does not block access to this menu. Accessing and
modifying parameters in the ‘fast access’ menu does not
interfere with the normal functionality of the instrument,
and it does not generate any system reset when validating
the changes.
Operating with the front keypad inside the menus
Key ‘SQ’ (<) - press the ‘SQ’ (<) key for 1 second to access the ‘configuration menu’. Inside the menu, the ‘SQ’ (<)
key acts as an ‘ENTER’. It enters into the menu option selected, and when entering a numerical value, it validates the
number.
Key ‘UP’ (5) - press the ‘UP’ (5) key to access the ‘fast
access’ menu. Inside the menu,the ‘UP’ (5) key sequentially moves through the available parameters and menu entries. When entering a numerical value, it modifies the digit
selected by increasing its value to 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.
10
(6)
(1)
(3)
Example of operation inside
the ‘configuration menu’.
(2)
(5)
(5)
(5)
(5)
(6)
(4) 1. The (<) key enters into the
(3) (4)
(3) (4)
(3) (4)
(3)
(3)
(3)
‘configuration menu’.
2. The (<) key enters into the
‘InP’ menu.
3. The (5) key moves through
the menu options.
4. The (<) key selects the
desired range and returns
to the ‘InP’ menu.
5. The (3) key leaves the
actual menu level and
moves to the previous
menu level.
6. The (3) key leaves the
‘configuration
menu’.
Changes are applied and
saved at this moment.
Figure 9 - Example of operation inside the ‘configuration menu’
1.12.2 Initial set-up
To configure the initial set up of the instrument, select the
input signal range, the decimal point position, and scale the
reading.
Press ‘SQ’ (<) for 1 second to access the ‘configuration
menu’. For a description on how to operate inside the menus
see section 1.12.1. For a full vision of the ‘configuration menu’
structure see section 1.15.
At the ‘Input’ (‘Inp’) parameter, select the input signal range.
4/20 mA input signal range
• select ‘420’ for 4/20 mA signals. Close the ‘mA’ jumper
(see section 1.8). It accepts active and passive signals. See
connections at section 1.8.1.
Input
0/10 Vdc input signal range
±20 mA input signal range
• select ‘010’ for 0/10 Vdc signals. Close the ‘Vdc’ jumper
(see section 1.8). It accepts active and passive signals. See
connections at section 1.8.1.
±10 Vdc input signal range
• select ‘b20’ for ±20 mA signals. Close the ‘mA’ jumper
(see section 1.8). It accepts active and passive signals. See
connections at section 1.8.1.
Decimal point
Scaling
• select ‘b10’ for ±10 Vdc signals. Close the ‘Vdc’ jumper
(see section 1.8). It accepts active and passive signals. See
connections at section 1.8.1.
Input Low
At the ‘Decimal point’ (‘dP’) parameter, select the decimal
point position. Move the decimal point with the ‘LE’ (3) key.
Display Low
At the ‘Scaling’ (‘ScAL’) menu, configure the reading fot the
input signal range selected. The parameters are:
• at the ‘Input Low’ (‘I.Lo’) parameter configure the low
input signal, in mA or Vdc, with two decimals.
Input High
• at the ‘Display Low’ (‘d.Lo’) parameter configure the
reading associated to the low input signal configured
before.
Display High
• at the ‘Input High’ (‘I.hI’) parameter configure the high
input signal, in mA or Vdc, with two decimals.
• at the ‘Display High’ (‘d.hI’) parameter configure the
reading associated to the high input signal configured
before.
Range
Input Low
(‘I.Lo’)
Display Low
(‘d.Lo’)
Input High
(‘I.hI’)
Display High
(‘d.hI’)
4/20 mA
4.00 mA
0
20.00 mA
1000
0/10 Vdc
0.00 Vdc
0
10.00 Vdc
1000
±20 mA
-20.00 mA
-1000
20.00 mA
1000
±10 Vdc
-10.00 Vdc
-1000
10.00 Vdc
1000
Table 11 - Scaling parameter default values for each signal range
11
1.12.3 Field correction
The ‘Field correction’ (‘F.cor’) function corrects the high input signal.
instrument reading once installed on the field. Reading
Example: a 0/10 Bar pressure transmitter provides a
offsets and deviations can occur due to inaccuracies on the real
4/20 mA output signal. At installation, the operator
detects that the reading at 0 Bar is 0.34 Bar and that at
signal. The ‘field correction’ function offers a fast and easy way
10 Bar the reading is 10.72 Bar.
to compensate for this inaccuracies.
Generate the low input signal and if the reading is not as
Apply the ‘Field correction’ / ‘F.Lo’ function while reading is 0.34 Bar and the instrument will automatically cordesired, activate the ‘low level’ field correction function. The
rect the reading to 0.00 Bar. Afterwards, apply the ‘Field
instrument will configure itself so that with the actual input
correction’ / ‘F.Hi’ function while reading is 10.72 Bar and
signal, the reading is as indicated at the ‘d.Lo’ parameter. Field
the instrument will automatically correct the reading to
correction can be applied to the low input signal and to the
10.00 Bar.
1.12.4 Alarms
The instrument manages 3 independent internal alarms,
each one controlling the activation of an optional relay,
transistor or control SSR output.
Optional modules (see section 2) are installed at the free
slots inside the instrument (see section 1.4). LDB-24 and
LDB-44 formats have 2 free slots for output and control
modules, while LDB-26 and LDB-46 formats have 3 free
slots for output and control modules.
The instrument has 3 front leds that reflect the state of the
3 internal alarms. These leds are only for local help during
installation, as they are not appropriate for long distance
reading.
Each alarm controls the activation of the relay, transistor
or control SSR installed on its associated slot, and the front
led.
• Configurable parameters
Each alarm has several parameters for configuration,
starting with the usual setpoint, hysteresis and maximum
Reading
hysteresis
setpoint
t
Alarm as maximum, no
hysteresis, no delays
on
off
on
off
activation
delay
Alarm as maximum,
hysteresis and delays
t
deactivation
delay
Alarm as minimum, no
hysteresis, no delays
Figure 10 - Examples of alarm with 1 setpoint
12
Reading
Setpoint 2
t
on
off
(alarm active when reading is higher than setpoint) or
minimum (alarm active when reading is lower than
minimum) alarm types (see Figure 10).
• Activation and deactivation delays
Each alarm can configure independent activation and
deactivation delays. These delays affect the alarm as a
whole, and the delay will affect the front led and the
associated relay.
• Second setpoint
Configuring a second setpoint creates ‘windowed alarms’.
The windowed alarm controls with a single relay output
if the reading is inside or outside the values defined (see
Figure 11).
• Inverted relay
Activate the ‘inverted relay’ function to invert the
activation logic of the associated relay.
• ‘Locked alarms’
Activate the ‘locked alarms’ function will force the operator
to interact with the instrument when an alarm has been
activated. Once activated, the alarm will remain locked at
active state, even if the reading returns to a value below
setpoint, until the operator manually unlocks the alarms
pressing the front key ‘LE’ (or the remote key ‘LE’, see
section 3.1).
t
Setpoint 1
t
Alarm as minimum, with
double setpoint, no hysteresis, no delays
off
t
Figure 11 - Example of alarm with 2 setpoints
on
1.12.5 Field correction menu
Field correction
Correction Low
Wait (5 sec.)
(<)
Correction High
Wait (5 sec.)
(<)
To operate the ‘Field Correction’ (‘F.cor’) function for the
offset, generate the low input signal and access the ‘Field Low’
(‘F.Lo’) function. The instrument starts the correction process:
• message with the measurement type (‘mA’ or ‘Vdc’)
• message ‘wait’ (‘WAIt’) in flash mode
• after 5 seconds, message ‘ok’ (‘oK’)
• at this point, press key ‘SQ’ (<)
• the menu returns to menu entry ‘Field Low’ (‘F.Lo’)
The instrument has read the input signal value and automatically applies the value to the ‘Input Low’ (‘I.Lo’) parameter.
For the high signal, repeat the process generating the high
input signal and access the ‘Field High’ (‘F.hI’) function. The
instrument reads the input signal value and automatically
applies the value to the ‘Input high’ (‘I.hI’) parameter.
1.12.6 Alarms configuration menu
Alarms
Alarm 1
Active
Type of alarm
Setpoint
Hysteresis
Activation
delay
Deactivation
delay
Setpoint 2
Inverted relay
Locked alarm
To configure the alarm, access the alarm menu (‘ALr1’, ‘ALr2’
or ‘ALr3’) and configure the following parameters :
• at the ‘Active’ (‘Act’) parameter select ‘on’
• at the ‘Type of alarm’ (‘TypE’) parameter select ‘MAX’ for
maximum alarm (activates when reading is higher than
setpoint), or ‘MIn’ for minimum alarm (activates when
reading is lower than setpoint).
• at the ‘Setpoint’ (‘SEt’) parameter configure the alarm activation point. Parameter value is accessible through ‘fast
access’ (see section 1.12.11).
• at the ‘Hysteresis’ (‘hySt’) parameter select the hysteresis
value. Hysteresis applies to the alarm deactivation. Alarm
deactivates once the reading is beyond the setpoint plus
the hysteresis value. Hysteresis prevents relay switching in
case of signal fluctuations close to the setpoint value.
• at the ‘Activation delay’ (‘dEL.0’) parameter configure the
delay to apply before the alarm is activated. Delay starts to
count once the setpoint is reached. Value from 0.0 to 99.9
seconds.
• at the ‘Deactivation delay’ (‘dEL.1’) parameter configure the delay to apply before the alarm is deactivated.
Delay starts to count once the setpoint is reached plus the
hysteresis value. Value from 0.0 to 99.9 seconds.
• to work with ‘windowed alarms’ (see Figure 11) activate
‘Setpoint 2’ (‘SEt2’) to ‘on’ and then configure the desired
second setpoint value. Second setpoint must always be
higher in value than the first setpoint.
• at the ‘Inverted relay’ (‘r.Inv’) parameter select ‘on’ to
invert the activation logic of the relay. Relay is inactive when
alarm is active, and relay is active when alarm is inactive.
• at the ‘Locked alarm’ (‘A.Lck’) parameter select ‘on’
to block the automatic alarm deactivation. Alarm
deactivation must be performed manually, by pressing the
‘LE’ front button (see section 1.12.13).
13
1.12.7 Display filters
The instrument provides several functions to personalize the
reading of the instrument, in order to stabilize the measure
and minimize the signal noise. The available functions are:
• the ‘Fixed Digits’ (‘FIX.d’) allows to fix each digit to a fixed
value. Usually one or more digits to the right are fixed to
‘0’. To fix a digit. To fix a digit, all digits to its right must be
also fixed. Value ‘-’ means that the digit is not fixed.
• the ‘Average filter’ (‘AVr’) applies a recursive filter to the
reading function, in order to reading oscillations due to
noisy signals.
• the ‘Steps’ (‘StEP’) function defines the reading to be
done in steps of 1, 2, 5, 10, 20 or 50 counts.
Example - selecting a step of 20 configures the reading to
change in steps of 20 counts (‘1420’, ‘1440’, ‘1460’, ...).
• the ‘Left Zero’ (‘LZEr’) function lights all zeros to the left.
• the ‘Memory of maximum’ (‘MAX’) function displays the
maximum reading value stored in memory and allows to
reset this value. This parameter is directly accessible using
key ‘UP’ (5) (see section 1.12.11).
• the ‘Memory of minimum’ (‘MIn’) function displays the
minimum reading value stored in memory and allows to
reset this value. This parameter is directly accessible using
key ‘UP’ (5) (see section 1.12.11).
• the ‘Peak & hold’ (‘P.hLd’) function visualizes and holds
the maximum reading. For test-break applications, where
the meter always increases its value until the unit under
test breaks and the signal falls down. The meter maintains
the maximum reading before the signal fell down. Press
any front key to free the reading or configure automatic
release of the reading after a predefined time.
To free the ‘hold’ reading, press any of the front key pad or
wait the time configured at the ‘time’ parameter.
Time 0
Time 1 a 3999
Time 4000
hold disabled (‘Off’)
seconds waiting
infinite hold
While ‘hold’ is active, the instrument alarms are still
associated to the input signal, therefore still providing
control to disconnect the application once the test has
finished.
Example: to test a container, a fluid under pressure is
inserted into the container. A pressure transducer provides
a 4/20 mA proportional to the pressure applied. When the
container breaks, the measured pressure drops sharply.
The ‘Peak&Hold’ function retains the maximum reading on
display.
1.12.8 Segment linearization
The instrument provides a segment linearization function the error was found. The function will not be activated until
that allows up to 20 segments to linearize non linear signals. all errors have been solved.
Example: a tank with a non regular shape is used for The configuration can be erased activating the function
water storage. The tank has a pressure transducer, and it ‘reset’.
provides a signal proportional to the level of water in the tank.
Using the segment linearization function the reading can
be scaled to provide information related to the volume of
water in the tank, instead of the height of water in the tank.
The operator needs to define the number of segments to
be used, between 2 and 20. Then the operator must define
the signal and reading value for each of the points. Once all
the points are entered, activate the linearization and the
instrument will check the consistency of the data entered.
If the instrument detects problems with the data introduced,
an error message will appear together with the point were
14
1.12.9 Display filters configuration menu
Fixed Digits
Fix the digits
Average filter
0.0 to 99.9
Display
Steps
Left zeros
Memory of
maximum
All display functions are grouped under the ‘Display’ menu.
For more information relating the functions listed below see
section 1.12.7.
• at the ‘Fixed Digits’ (‘FIX.d’) parameter, fix the digits to a
fixed value. The ‘-’ value means that the digit is not fixed.
• at the ‘Average filter’ (‘Avr’) parameter select ‘on’ and
configure the filter strength between ‘0.0’ and ‘99.9’.
Higher values activate stronger filter. Stronger filters slow
down the reading changes.
• at the ‘Steps’ (‘StEP’) parameter configure the value for
the steps reading changes.
• at the ‘Left Zeros’ (‘LZEr’) parameter select ‘on’ to
activate the left zeros.
• the ‘Memory of maximum’ (‘MAX’) and ‘Memory of
minimum’ (‘MIn’) are access to the memory values. To
reset the value, select the ‘rSt’ entry and press ‘SQ’ (<).
• at the ‘Peak & hold’ (‘P.hLd’) menu select ‘on’ to activate
the function and configure the ‘hold’ time.
Memory of
minimum
Time (Sec.)
Peak & Hold
1.12.10 Tools configuration menu
Inside the ‘Tools’ (‘tooL’) menu several different functions
are grouped.
Tools
Segment
linearization
Number of
segments
Value 2 to 20
Scaling
Input 0
Display 0
Input 1
Display 1
Activate
Reset
At the ‘Segment Linearization’ (‘S.LIn’) define up to
20 segments to linearize non-linear signals. See section
1.12.8 for more information.
• at the ‘Number of segment’ (‘nuM’) parameter
introduce the number of segments. Value between
‘2’ and ‘20’.
• at the ‘Scaling’ (‘ScAL’) parameter introduce the input
signal valur (‘Input’) and the associated reading value
(‘Display’) for each point, starting at point ‘0’, up to the
total number of segments previously defined..
• select ‘Activate’ (‘Act’) to ‘on’ to activate the
segments previously configured. Select ‘oFF’ to disable the
segment linearization and return to standard scaling
(see section 1.12.2)
• select ‘Reset’ (‘rSt’) to ’yES’ deletes the actual segment
linearization.
15
1.12.11 Fast access
The ‘fast access’ is an operator configurable menu. The
operator can access this menu with a single press of the front
key ‘UP’ (5). The configured menu entries will be accessible.
Eligible parameters to be accessed by this menu are:
• access to the alarm setpoints through the ‘UP’ (5) key
allows to read and modify the values.
• access to the maximum and minimum alarms through the
‘UP’ (5) key allows to read and reset the values. To reset
the memory values: visualize the value on display, press the
‘UP’ (5) key, when the ‘rSt’ message appears, press ‘SQ’
(<) . The instrument will return to the memory visualization. Press the ‘LE’ (3) key to exit his menu.
• access to the ‘tare’ parameter through the ‘UP’ (5) key
allows to visualize the value (in display counts) of the tare
applied (see section 1.12.14).
• access to the ‘measure’ function through the ‘UP’ (5)
key visualizes the actual signal at input terminals, without
scaling, directly in mA or Vdc value. The ‘measure’ function
provides a direct ‘voltmeter’ or ‘miliammeter’ integrated
into the instrument, to be used for troubleshooting. It helps
to easily confirm if the received signal is correct or not.
The ‘fast access’ menu is not affected by the password
function. This means that the configuration menu can be
password blocked, while some configured functions or
parameters can still be accessible to the operator through the
‘fast access’ menu.
• Super fast access
If only a single function is selected for the ‘fast access’ menu,
pressing the the ‘UP’ (5) key will shortly display the function
name and then automatically jump to the function value.
1.12.12 ‘on power up’ function
1.12.14 ‘Tare’ function
The ‘On Power Up’ (‘on.Pu’) functions allows to define a
series of actions to activate when the instrument restarts
after a power loss. Functions available are a delay so the
instrument waits a defined time before starting to measure
and control, and an automatic tare of the reading. The functions will apply only after a restart due to power-loss, they
will not apply after a restart due to changes in configuration.
Delaying the measure and control functions gives additional
time to elements of the system who are slower, so they can
start completely before the instrument begins to acquire
signal and control the outputs.
While on delay mode, the instrument shows all decimal
points lightened and flashing, all alarms are deactivated, and
there is no signal acquisition or communications control.
When the delay time is over, the instrument starts its normal
functioning.
The ‘Tare function’ (‘tArE’) allows to use the instrument with
weight applications. The tare function assigns the actual
input signal value to a display of ‘0’, by means of an internal
offset. The scaling of the instrument is not modified, only
additional counts are added to the offset.
1.12.13 ‘LE’ key
1.12.15 Excitation voltage
The tare function is accessible through the front ‘LE’ (3)
key (see section 1.12.13). The actual value of the tare is
accessible through the front ‘UP’ (5) key (see section
1.12.11). To reset the tare to ‘0’ counts activate the ‘reset’
parameter of the ‘tare’ menu
The ‘LE’ (3) key at the front of the instrument can be config- The ‘Excitation Volt’ (‘V.EXc’) allows to select the excitation
ured to activate several functions. Only one function can be voltage value to 5 Vdc, 10 Vdc, 15 Vdc or 20 Vdc. Select ‘oFF’
assigned to the ‘LE’ (3) key. Eligible functions are the ‘tare’ to disable the excitation voltage.
function (see section 1.12.14) and the alarm unlock function
(see section 1.12.4).
16
Key UP
(‘Fast access’)
At the ‘Key UP (‘fast access’)’ (‘K.uP’) menu configure which
functions and parameters will be accessible through the ‘fast
access’ menu. Select ‘on’ to activate each function. For more
information see section 1.12.11.
• the ‘Setpoint 1’ (‘ALr1’) function allows to visualize and
modify the alarm 1 setpoint through the ‘fast access’ menu.
Setpoint 1
Setpoint 2
Setpoint 3
• the ‘Setpoint 2’ (‘ALr2’) function allows to visualize and
modify the alarm 2 setpoint through the ‘fast access’ menu.
Memory of
maximum
• the ‘Setpoint 3’ (‘ALr3’) function allows to visualize and
modify the alarm 3 setpoint through the ‘fast access’ menu.
Memory of
minimum
• the ‘Memory of maximum’ (‘MAX’) or ‘Memory of
minimum’ (‘MIn’) functions allow to visualize the
maximum or minimum reading value stored in memory.
• the ‘tare value’ (‘tArE’) allows to visualize the value of
the applied tare.
• the ‘Measure’ (‘MEAS’) function allows to visualize the
actual input signal in mA or Vdc, without scaling.
‘Tare’ value
‘Measure’
On Power-Up
Delay
Seconds
Tare
Tare function
Reset
Key ‘LE’
No function
• the ‘Tare’ (‘tArE’) allows to reset the value of the tare.
See section 1.12.14 for more information on the ‘tare’
function..
Tare
The ‘LE’ (3) key at the front of the instrument can be
configured to activate several functions. For more
information see section 1.12.13.
Alarm unlock
5 Vdc
Excitation Volt.
The ‘On Power Up’ (‘on.Pu’) menu assigns functions to be
applied when the instrument starts after a power loss. For more
information see section 1.12.12.
• at the ‘Delay’ (‘dLAy’) parameter configure the time the
instrument will wait before starting normal functionality.
Time between 0 and 200 seconds.
• at the ‘tare function’ (‘tArE’) parameter select ‘on’ to
activate an automatic tare every time the instrument starts
after a power loss..
10 Vdc
15 Vdc
• the ‘No function’ (‘nonE’) parameter assigns no function.
• the ‘Tare’ (‘tArE’) parameter assigns the tare function.
• the ‘Alarm unlock’ (‘A.Lck’) parameter assigns the manual
alarm unlocking, when the ‘Locked alarms’ (‘A.Lck’) is active
(see section 1.12.4).
20 Vdc
Disabled
At the ‘Excitation Volt.’ (‘V.EXc’) menu select the excitation
voltage of the instrument. For more information see section
1.12.15.
17
1.12.16 Password configuration
The password function blocks access to the configuration
menu. The ‘fast access’ menu is not affected by the password
function. This means that the configuration menu can be
password blocked, while some configured functions or parameters can still be accessible to the operator through the ‘fast
access’ menu.
To active the ‘Password’ function select ‘on’ and introduce
the 6 digits code. The code will be requested when trying to
access the ‘configuration menu’ (front key ‘SQ’ (<)).
Password
1.12.17 Default factory configuration
At the ‘FActory configuration’ (‘FAct’) menu select ‘yes’ to
activate the default factory configuration. See section 1.13
for a list of default parameters.
Factory
configuration
1.12.18 Firmware version
The ‘Version’ (‘VEr’) menu informs about the firmware
version installed on the instrument.
Version
1.12.19 Brightness configuration
Minimum
Brightness
Standard
At the ‘Brightness’ (‘LIGh’) menu select the intensity level
for the display . Use this function to adapt the brightness to
match other instruments in the vicinity or to the darkness or
clarity of your environment.
Maximum
1.12.20 Access to the options configuration menu
Access to the optional module installed at slot 1
Option 1
Access to the optional module installed at slot 2
Option 2
Access to the optional module installed at slot 3
Option 3
The output and control options are optional modules that
can be installed at the instrument. Formats LDB-24 and LDB44 have 2 free slots for output and control options, while
formats LDB-26 and LDB-46 have 3 free slots (see section
1.4).
Several of these optional modules have their own configuration menu embedded. The ‘OPt.1’, ‘OPt.2’ and ‘OPt.3’ menu
entries give access to the configuration menu of the option
installed.
See section 2 for a list of available output and control
modules
18
1.13 Factory configuration
1.14 Messages and errors
Range
Scaling and decimal point
Alarms 1,2 and 3
Active
Type
Setpoint
Hysteresis
Activation delay
Deactivation delay
Setpoint 2
Inverted relay
Locked alarms
Display
Fixed digits
Average
‘Steps’
Left zeros
Maximum memory
Minimum memory
‘Peak&Hold’
Tools
Segment linearization
Fast access
‘On Power Up’
Delay
Tare
Ley ‘LE’
Excitation voltage
Password
Brightness
Error messages are informed flashing on display (examples
for 6 digit formats).
4/20 mA
4/20 mA = 0/100.0
off (disabled)
as maximum
1000
0 counts
0.0 seconds
0.0 seconds
off
off
off
off
off
off
off
-199999
999999
off
off
off
0 seconds
off
no function
+20 Vdc
off
3
Messages and errors
hardware underrange (‘h.udr’) / overrange (‘h.
‘h.udr’
‘h.oVr’
ovr’). Input signal is lower / higher than the
minimum / maximum signal the instrument can
detect.
display underrange (‘d.udr’) / overrange (‘d.
‘d.udr’
‘d.oVr’
ovr’). The display is displaying the maximum /
minimum value possible (-199999 / 999999).
‘hoLd’
the ‘hold’ function is active. Display is on hold.
‘P.hLd’
the ‘Peak&Hold’ function is active.
‘Err.0’*
at the ‘scaling’ (‘ScAL’) menu entry, the defined
slope is higher than ‘5000’ (slope almost
vertical) or higher than 10000 for 6 digit
formats. Default values are activated.
*Slope= [(dhI-dLo) / (IhI-ILo)]
incorrect password.
when accessing an ‘oPt.X’ menu entry, the
installed module can not be recognized.
at ‘segment linearization’ (‘SLin’) menu
entry, the input signal values are not in growing
succession.
‘Err.1’
‘Err.2’
‘Err.3’
‘Err.5’*
‘Err.8’
at the ‘segment linearization’ (‘SLin’) menu
entry, the defined slope of one segment is
higher than ‘5000’ (slope almost vertical) or
higher than 10000 for 6 digit formats.
*Slope= [(dhI-dLo) / (IhI-ILo)]
excitation voltage overload.
Table 12 - Messages and error codes
19
1.15 Full configuration menu
Press ‘SQ’ (<) for 1 second to access the ‘Configuration menu’.
Inverted relay
4/20 mA input signal range
Input
0/10 Vdc input signal range
Locked alarm
±20 mA input signal range
±10 Vdc input signal range
Alarm 2
Alarm 3
Decimal point
Scaling
Display
Input Low
Display Low
Fixed Digits
Average filter
0.0 to 99.9
Input High
Steps
Display High
Field correction
Correction Low
Wait (5 sec.)
(<)
Correction High
Wait (5 sec.)
(<)
Alarms
Left zeros
Alarm 1
Active
Alarm type
Memory of
maximum
Setpoint
Memory of
minimum
Hysteresis
Activation
delay
Deactivation
delay
Setpoint 2
20
Peak & Hold
Time (sec.)
Tools
Segment
linearization
Tare function
Reset
Key ‘LE’
No function
Number of
segments
Value 2 to 20
Scaling
Input 0
Tare
Display 0
Alarm unlock
Input 1
Excitation Volt.
Display 1
Activate
Reset
Password
Key UP
(‘Fast access’)
Setpoint 1
Factory
configuration
Setpoint 2
Firmware version
Minimum
Setpoint 3
Brightness
Memory of
maximum
Standard
Memory of
maximum
Maximum
Access to the optional module installed at slot 1
Tare value
Option 1
Access to the optional module installed at slot 2
‘Measure’
Option 2
Access to the optional module installed at slot 3
On Power-Up
Delay
Seconds
Option 3
Tare
21
1.16 Mounting
The instrument fixations are designed to allow panel mount, see the position of the fixations at the images below.
wall mount, or hanging mount. For each type of mounting,
• Panel mount. Apply the cut-out to the panel as seen on • Wall mount. Mount the side fixations against the wall,
section 1.4. Remove the side fixations. Introduce the
as shown (see Figure 14). Each fixation has 2 holes with
instrument into the panel cut-out. Mount the side fixations
4,5 mm diameter and a separation between hole centers
as shown (see Figure 12). Slightly loosen the fixation screw
of 30 mm. Once the side fixations are secured against the
of one side and press the instrument against the panel.
wall, place the instrument and press the fixation screws
Tighten the fixation screw so it presses the panel and
slightly. Tilt the instrument to the desired viewing angle
maintains the fixation. Repeat with the opposite side
and firmly screw the fixation screws.
fixation. For IP65 protection at the panel junction, see the
IPB accessories at section 3.
Diameter 4,5 mm
30 mm between
hole centers
Fixation screws
Side fixations
Figure 12 - Panel mount
• Hanging mount. Mount the side fixations as shown
(see Figure 13). Each fixation has 2 holes with 4,5 mm
diameter and a separation between hole centers of 30 mm.
Instrument can be hanged using cable, threaded rod, ....
Diameter 4,5 mm
30 mm between
hole centers
Fixation screws
Side fixations
Figure 13 - Hanging mount
22
Fixation screws
Side fixations
Figure 14 - Wall mount
1.17 Installation precautions
Risk of electrical shock. Instrument terminals can be
connected to dangerous voltage.
Instrument conforms to CE rules and regulations.
This instrument has been designed and verified conforming to
the 61010-1 CE security regulation, for industrial applications.
Installation of this instrument must be performed by
qualified personnel only. This manual contains the appropriate
information for the installation. Using the instrument in ways not
specified by the manufacturer may lead to a reduction of the
specified protection level. Disconnect the instrument from
power before starting any maintenance and / or installation
action.
The instrument does not have a general switch and will start
operation as soon as power is connected. The instrument
does not have protection fuse, the fuse must be added during
installation.
An appropriate ventilation of the instrument must be assured.
Do not expose the instrument to excess of humidity. Maintain
clean by using a humid rag and do NOT use abrasive products
such as alcohols, solvents, etc.
General recommendations for electrical installations apply, and
for proper functionality we recommend : if possible, install the
instrument far from electrical noise or magnetic field generators such as power relays, electrical motors, speed variators,
... If possible, do not install along the same conduits power cables (power, motor controllers, electrovalves, ...) together with
signal and/or control cables.
Before proceeding to the power connection, verify that the
voltage level available matches the power levels indicated in
the label on the instrument.
In case of fire, disconnect the instrument from the power line,
fire alarm according to local rules, disconnect the air conditioning, attack fire with carbonic snow, never with water.
1.19 CE declaration of conformity
Supplier
Omega Engineering
Products
LDB-P
The manufacturer declares that the instruments indicated
comply with the directives and rules indicated below.
Electromagnetic compatibility directive 2014/30/EU
Low voltage directive 2014/65/EU
Directive ROHS 2011/65/EU
Directive WEEE 2012/19/EU
Security rules EN-61010-1
Instrument Fixed, Permanently connected
Pollution degree 1 and 2 (without condensation)
Isolation
Basic + Protective union
Category
CAT-II
Electromagnetic compatibility rules EN-61326-1
EM environment
Industrial
Immunity levels
EN-61000-4-2 By contact ±4 KV
Criteria B
By air ±8 KV
Criteria B
Criteria A
EN-61000-4-3 Criteria B
EN-61000-4-4 On AC power lines: ±2 KV
On DC power lines: ±2 KV
Criteria B
On signal lines : ±1 KV
Criteria B
Criteria B
EN-61000-4-5 Between AC power lines ±1 KV
Between AC power lines and earth ±2 KV Criteria B
Between DC power lines ±1 KV
Criteria B
Between DC power lines and earth ±2 KV Criteria B
Between signal lines and earth ±1 KV
Criteria B
Criteria A
EN-61000-4-6
Criteria A
EN-61000-4-8 30 A/m at 50/60 Hz
Criteria A
EN-61000-4-11 0 % 1 cycle
40 % 10 cycles
Criteria A
70 % 25 cycles
Criteria B
0 % 250 cycles
Criteria B
Emission levels
CISPR 11
Instrument Class A, Group 1
Criteria A
1.18 Warranty
Please see the last page for Omega’s warranty Disclaimer
According to directive 2012/19/EU, electronic
equipment must be recycled in a selective and
controlled way at the end of its useful life.
23
2. Output and control modules
2.1 Module R1
2.2 Module T1
The R1 module provides 1 relay output to install in large
format industrial meters from LDB series. Formats LDB-26 and
LDB-46 accept up to 3 relays, and formats LDB-24 and LDB-44
accept up to 2 relays.
Configuration is performed from the front keypad of the
instrument, by setting the alarm parameters. Check the alarm
menu parameters at the instrument user’s manual for full
information.
Modules R1 can be provided factory installed into
instrument, or standalone for delayed installation. No
soldering or special configuration is required. See section 1.6
on how to install output and control modules.
‘com’ (‘A’)
‘B’
‘NC’ (‘C’)
‘NO’ (‘B’)
‘A’
Figure 15 - Module ‘R1’ and internal schematic
Type of relay
Max. current
Voltage
Isolation
Terminal
Installation allowed at
The T1 module provides 1 transistor output to install in large
format industrial meters from LDB series. Formats LDB-26 and
LDB-46 accept up to 3 transistor outputs, and formats LDB-24
and LDB-44 accept up to 2 transistor outputs.
Configuration is performed from the front keypad of the
instrument, by setting the alarm parameters. Check the alarm
menu parameters at the instrument user’s manual for full
information.
Modules T1 can be provided factory installed
instrument, or standalone for delayed installation. No
soldering or special configuration is required. See section 1.6
on how to install output and control modules.
3 contacts (Com, NO, NC)
3 A (resistive load)
250 Vac continuous
3500 Veff
plug-in screw clamp, pitch 5.08 mm
slot 1, slot 2, slot 3
Figure 17 - Module ‘T1’ and internal schematic
Type of output
Max. voltage
Max. current
Isolation
Terminal
Installation allowed at
transistor
35 Vdc
50 mA
3500 Veff, optoisolated
plug-in screw clamp, pitch 5.08 mm
slot 1, slot 2, slot 3
NOpen
Common
A
B
C
B
NClosed
Not connected
A B C
A B C
Module R1
Module T1
Common
NO (Normally Open)
NC (Normally Closed)
Figure 16 - Connections for ‘R1’ relay output module
24
A
A
B
C
Emitter
Collector
Not connected
Figure 18 - Connections for ‘T1’ transistor output module
2.3 Module SSR
2.4 Module AO
The SSR module provides 1 output for SSR relay control, to
install in large format industrial meters from LDB series. Formats LDB-26 and LDB-46 accept up to 3 SSR control outputs,
and formats LDB-24 and LDB-44 accept up to 2 SSR control
outputs.
Configuration is performed from the front keypad of the
instrument, by setting the alarm parameters. Check the alarm
menu parameters at the instrument user’s manual for full
information.
Modules SSR can be provided factory installed instrument, or
standalone for delayed installation. No soldering or special
configuration is required. See section 1.6 on how to install
output and control modules.
The AO module provides 1 analog output, configurable for
4/20 mA or 0/10 Vdc signal, to install in large format industrial
meters from LDB series. Formats LDB-26 and LDB-46 accept
up to 3 analog outputs, and formats LDB-24 and LDB-44 accept up to 2 analog outputs.
Output signal is fully scalable, both with positive and negative
slopes, and is proportional to the reading. The mA output can
be configured for active loops (the instrument provides the
power to the mA loop) or passive loops (the loop power is
external to the instrument).
Configuration is performed from the front keypad of the instrument, by accessing the menu entries ‘Opt.1’, ‘Opt.2’ or
‘Opt.3’, according to the slot where the module is installed.
AO modules can be provided factory installed into the LDB
series instrument, or standalone for delayed installation. No
soldering or special configuration is required. See section 1.6
on how to install output and control modules.
+15 Vdc ‘C’
Relé SSR
‘B’
Figure 21 - Module ‘AO’
‘A’
Figure 19 - Module ‘SSR’ and internal schematic
Type of output
Output voltage
Max. current
Isolation
Terminal
Installation allowed at
for SSR relay control
+15 Vdc
45 mA
1000 Vdc
plug-in screw clamp, pitch 5.08 mm
slot 1, slot 2, slot 3
Signal output
Accuracy
Isolation
Terminal
Installation allowed at
4/20mA, 0/10Vdc (active and passive)
0.1% FS
1000 Vdc
plug-in screw clamp, pitch 5.08 mm
slot 1, slot 2, slot 3
mA or Vdc
V exc.
Common
Collector
Not connected
+15 Vdc
MV
Jumpers MV for
A B C
mA or Vdc output selection
Module AO
A B C
Module SSR
A
B
C
Not connected
Collector (-)
+15 Vdc (+)
Figure 20 - Connections for ‘SSR’ control module
A
B
C
Excitation voltage
Signal in mA or Vdc
Common
Jumper M Jumper closed for mA output
Jumper V
Jumper closed for Vdc output
Figure 22 - Connections for ‘AO’ analog output module
25
2.5 Module RTU
2.6 Module S4
The RTU module implements function ‘4’ (‘Read Input
Registers’) of the Modbus RTU protocol, to access the
instrument registers (reading value, alarm status, memory of
maximum and minimum, ...).
Configuration is performed from the front keypad of the
instrument, by accessing the menu entries ‘Opt.1’, ‘Opt.2’ or
‘Opt.3’, according to the slot where the module is installed.
Modules RTU can be provided factory installed into the
LDB series, or standalone for delayed installation. No
soldering or special configuration is required. See section 1.6
on how to install output and control modules.
The S4 module implements a MASTER / SLAVE protocol, with
up to 31 addressable slaves. In SLAVE mode allows access
to reading values, alarm status, memory of maximum and
minimum, ...
Configuration is performed from the front keypad of the
instrument, by accessing the menu entries ‘Opt.1’, ‘Opt.2’ or
‘Opt.3’, according to the slot where the module is installed.
Modules S4 can be provided factory installed into the
LDB series, or standalone for delayed installation. No
soldering or special configuration is required. See section 1.6
on how to install output and control modules.
The RTU module provides an isolated Modbus RTU The S4 module provides an isolated RS485 ASCII
communications port, to install in large format industrial communications port, to install in large format industrial
meters from LDB series.
meters from LDB series.
Figure 23 - Communications module ‘RTU’
Protocol
Bus
Isolation
Terminal
Installation allowed at
Figure 25 - Communications module ‘S4’
Modbus RTU
RS-485, up to 57.6 Kbps
1000 Vdc
plug-in screw clamp, pitch 5.08 mm
slot 1, slot 2, slot 3
Protocol
Bus
Isolation
Terminal
Installation allowed at
ASCII
RS-485, up to 57.6 Kbps
1000 Vdc
plug-in screw clamp, pitch 5.08 mm
slot 1, slot 2, slot 3
A wire
B wire
A wire
GND
GND
B A G
B A G
Module RTU
Module S4
A
Bus signal A
A
Bus signal A
B
Bus signal B
B
Bus signal B
G
GND
G
GND
Figure 24 - Connections for Modbus ‘RTU’ communications module
26
B wire
Figure 26 - Connections for RS-485 ‘S4’ communications module
2.7 Module S2
The S2 module provides an isolated RS232 ASCII
communications port, to install in large format industrial
meters from LDB series.
The S2 module implements a MASTER / SLAVE protocol, with
up to 31 addressable slaves, with ‘daisy-chain’ connection.
In SLAVE mode allows access to reading values, alarm status,
memory of maximum and minimum, ...
Configuration is performed from the front keypad of the
instrument, by accessing the menu entries ‘Opt.1’, ‘Opt.2’ or
‘Opt.3’, according to the slot where the module is installed.
Modules S2 can be provided factory installed into the
LDB series, or standalone for delayed installation. No
soldering or special configuration is required. See section 1.6
on how to install output and control modules.
Figure 27 - Communications module Module ‘S2’
Protocol
Bus
Isolation
Terminal
Installation allowed at
ASCII
RS-232, up to 57.6 Kbps
1000 Vdc
plug-in screw clamp, pitch 5.08 mm
slot 1, slot 2, slot 3
Tx1
Rx2
Rx1
Tx2
GND
A B C D E
Module S2
A
‘Daisy chain’ Tx data transmission
B
‘Daisy chain’ Rx data reception
C
Tx data transmission
D
Rx data reception
E
GND
Figure 28 - Connections for RS-232 ‘S2’ communications module
27
28
29
Options and Accessories
Index
1.1 Read this first . . . . . . . . . . . . . . . . . . . 2
1.2 Modular architecture . . . . . . . . . . . . . . 2
1.3 Installation and start-up . . . . . . . . . . . . . 2
1.4 To access the instrument . . . . . . . . . . . . 3
1.5 Modular system . . . . . . . . . . . . . . . . . 3
1. Options R1, T1 and SSR . . . . . . . . . . . . . . . 4
1.1 Module R1 . . . . . . . . . . . . . . . . . . . . 4
1.2 Module T1 . . . . . . . . . . . . . . . . . . . . 4
1.3 Module SSR . . . . . . . . . . . . . . . . . . . 5
2. Option AO . . . . . . . . . . . . . . . . . . . . . . 6
2.1 Connection examples . . . . . . . . . . . . . . 6
2.2 Configuration menu . . . . . . . . . . . . . . . 7
2.3 Error codes . . . . . . . . . . . . . . . . . . . . 7
3. Option RTU . . . . . . . . . . . . . . . . . . . . . . .8
3.1 Registers accessible through Modbus RTU . . 8
3.2 Configuration menu . . . . . . . . . . . . . . . 9
3.3 Exception codes . . . . . . . . . . . . . . . . . 9
3.4 Compatible versions . . . . . . . . . . . . . . . 9
3.5 Description and example of registers . . . . 10
4. Option S4 . . . . . . . . . . . . . . . . . . . . . . . 11
4.1 Accessible registers . . . . . . . . . . . . . . 11
4.2 Configuration menu . . . . . . . . . . . . . . 12
4.3 Compatible versions . . . . . . . . . . . . . . 12
4.4 Frame types . . . . . . . . . . . . . . . . . . 13
4.5 Frame structure . . . . . . . . . . . . . . . . 13
4.6 Error codes . . . . . . . . . . . . . . . . . . . 13
4.8 Frame examples . . . . . . . . . . . . . . . . 14
4.8.1 Frames ‘RD’ (36) and ‘ANS’ (37) . . . . . . 14
4.8.2 Frames ‘ERR’ (38) . . . . . . . . . . . . . . 14
4.7.1 Frames ‘PING’ (32) and ‘PONG’ (33) . . . 14
4.7 CRC calculation . . . . . . . . . . . . . . . . . 14
5. Option S2 . . . . . . . . . . . . . . . . . . . . . . . 15
1.1 Read this first
1.2 Modular architecture
All modules mentioned in this document are compatible with
large format meters from LDB series has 4 formats, and each
format differ in the number of digits, the digit height and the
number of output and control options they can accept.
This document assumes the following :
Large displays from the LDB series are designed following
a modular architecture that allows the operator to install
any of the output and control modules mentioned in this
document. Each module is supplied with 1 cable tie, 1
square self adhesive tie base and 1 female connector.
Format
Digits
Digit height
Options
LDB-24
4
60 mm
2
LDB-44
4
100 mm
2
LDB-26
6
60 mm
3
LDB-46
6
100 mm
3
• inside the programming menus, when a 6 digits value is shown,
it is assumed that only 4 digits apply to formats LDB-24 and LDB-44
• when this document explains that a maximum of 3 output
and control modules are installable, it is assumed that the
maximum is 2 modules for formats LDB-24 and LDB-44
The output and control modules mentioned in this document,
are covered by the warranty of the instrument where they are
installed. Check the user’s manual of the instrument for more
information related to warranty.
The user’s manual of the instrument where the module is
installed, has important information related to installation
that applies also to the output and control modules
mentioned in this document. Check the user’s manual of the instrument for more information related to
installation precautions.
The output and control modules mentioned in this document
are covered by the ‘CE declaration of conformity’ of
the instrument where they are installed. Check the
user’s manual of the instrument for more information
related to the CE declaration of conformity.
!
2
1.3 Installation and start-up
To install an optional output and control module into a large
display:
1. remove the rear cover of the instrument (see section 1.4)
2. install the module at one of the free slots (see section 1.5)
3. place the squared tie base at the free slot selected.
Location to place the tie base is clearly indicated on the PCB
(see section 1.5).
4. pass the cable tie through the tie base (see section 1.5)
5. place the output and control module at the slot connection
jumpers (see section 1.5)
6. use the cable tie to firmly fix the module (see section 1.5)
7. if needed, configure the appropriate jumpers at the output
and control module
8. pass the connection wires through the housing cable gland
9. connect the signal wires to the terminals of the output and
control module
10. place and close the rear cover of the instrument (see
section 1.4)
11. configure the parameters at the ‘Configuration menu’.
• modules R1, T1 and SSR are configured from the alarms
menu of the instrument
• other modules are configured from from menu entries
‘Opt.1’, ‘Opt.2’ or ‘Opt.3’, depending on the slot where the
module has been installed.
1.4 To access the instrument
To open the housing, remove the screws from the back cover.
With each screw there is a metal washer and a plastic washer.
Once the screws are out, remove the back cover.
The figure below shows the instrument internal structure for a
LDB-26 format. It shows the location of the 3 slots for optional
output and control modules, the power terminal and the input
signal terminal.
Watertight seal
Female turret
Back cover
To close the instrument, place the back cover, the screws, the
metal washer and the plastic washer. The plastic washer is in
contact with the back cover. Confirm that the screws are correctly
turning inside the internal female screws.
To ensure a correct IP65 protection tighten the back cover screws
with a strength between 30 and 40 Ncm, with the help of a
dynamometer screwdriver.
Power
Slot for option 3
Slot for option 2
Slot for option 1
Remote keypad terminal
Input signal terminal
Risk of electric shock. Removing the back
cover will grant access to the internal
circuits of the instrument. Operation must
be performed by qualified personnel only.
Screw
Metal washer
Plastic washer
1.5 Modular system
Large format meters are designed with an
internal modular architecture. The output and control
modules are independent and can be installed by accessing the internal circuits of the instrument, and connecting
the module to the connection jumpers of the selected slot.
Each module is provided with a cable tie to fix the module to
the tie base. A cable gland to install at the back cover is also
provided, in order to enable an output for the connection
wires.
Output and control module
Slot 3
Cable tie
Slot 2
(2)
Module pins
Tie base
(1)
Slot 1
To install an output and control module
(1) insert the ‘module pins’ into the ‘connection jumpers’ in one of the free slots
(2) place the ‘cable tie’ into the ‘tie base’
and embrace the ‘module’ firmly, until
it is fixed
(3) an additional white cable tie is provided
to fix as indicated below. Only needed in
case of vibrations or heavy transportation.
Connection jumpers
3
1. Options R1, T1 and SSR
The R1, T1 and SSR modules provide 1 digital ‘on/off’
output. The output is configured from the instrument
alarms menu (‘ALr.1’, ‘ALr.2’ o ‘ALr.3’).
The menu allows to configure the setpoint, hysteresis,
independent activation and deactivation delays, and a
second setpoint to create windowed alarms.
The R1, T1 and SSR output modules are isolated between
them and between all other circuits of the instrument.
1.1 Module R1
1.2 Module T1
‘com’ (‘A’)
‘B’
‘NC’ (‘C’)
‘NO’ (‘B’)
‘A’
Figure 1 - Detail for the ‘R1’ module and internal schematic
Option
R1
Type of output
relay
Type of relay
3 contacts (Com, NO, NC)
Max. current
3 A (resistive load)
Voltage
250 Vac continuous
(max. 150 Vac if switching power network with Overvoltage category III)
Isolation
3500 Veff
Type of terminal
plug-in screw clamp
pitch 5.08 mm
Installation allowed at slot 1, slot 2, slot 3
Figure 3 - Detail for the ‘T1’ module and internal schematic
Option
Type of output
Max voltage
Max. current
Isolation
Type of terminal
T1
transistor
35 Vdc
50 mA
3500 Veff, optoisolated
plug-in screw clamp
pitch 5.08 mm
Installation allowed at slot 1, slot 2, slot 3
NOpen
Common
B
NClosed
Not connected
A B C
A B C
Module R1
Module T1
A
Common
A
Emitter
B
NO (Normally Open)
B
Collector
C
NC (Normally Closed)
C
Not connected
Figure 2 - Connections for the ‘R1’ relay output module
4
A
Figure 4 - Connections for the ‘T1’ transistor output module
1.3 Module SSR
+15 Vdc ‘C’
Relé SSR
‘B’
‘A’
Figure 5 - Detail for the ‘SSR’ module and internal schematic
Option
Type of output
Output voltage
Max. current
Isolation
Type of terminal
SSR
to control SSR relay
+15 Vdc
45 mA
1000 Vdc
plug-in screw clamp
pitch 5.08 mm
Installation allowed at slot 1, slot 2, slot 3
Collector
Not connected
+15 Vdc
Opt.1
A B C
Opt.3
A B C
Opt.2
A B C
A B C
Module SSR
A
Not connected
B
Signal (-)
Collector
C
+15 Vdc (+)
Power
Figure 6 - Connections for the SSR control output module
5
2. Option AO
The AO modules provide 1 analog output, configurable for
4/20 mA or 0/10 Vdc signal. The analog output is configured
from the options menu entry (‘Opt.1’, ‘Opt.2’ or ‘Opt.3’) of
the instrument.
Option
Type of output
Signal output
AO
analog output
4/20 mA active
4/20 mA passive
0/10 Vdc
Max. signal
22 mA, 10.5 Vdc
Min. signal
0 mA, -50 mVdc
Scaling
proportional to the reading
positive or negative slopes
Vexc (terminal A)
+13.8 Vdc ± 0.4 Vdc (max. 25 mA)
protection against shortcircuit
Load impedances
≤350 Ohm (for 4/20 mA active)
≤800 Ohm (for 4/20 mA passive)
(for 24 Vdc external Vexc) (maximum
voltage 27 Vdc between ‘B’ and ‘C’)
≥10 KOhm (en 0/10 Vdc)
Accuracy (at 25 ºC)
<0.1 % FS
Thermal stability
60 ppm/ºC in mA
50 ppm/ºC in Vdc
Step response
<75 mSeconds + step response of the
(0% to 99% of the signal) reading
Isolation
1000 Vdc
Warm up
15 minutes
Type of terminal
plug-in screw clamp
pitch 5.08 mm
Factory configuration ‘Mode
mA’
‘Scaling 0/9999 = 4/20 mA’
‘On error ‘to_h’
Installation allowed at slot 1, slot 2, slot 3
The output signal is proportional to the reading, and it is
scalable both in positive or negative slopes. The mA output
can be configured for active loops (the instrument provides
the power to the mA loop) or passive loops (the loop power
is external to the instrument.
The AO analog output modules are isolated between them
and between all other circuits of the instrument.
Figure 7 - Detail for the ‘AO’ module
mA or Vdc
V exc.
Common
MV
Jumpers MV to
A B C
select mA or Vdc
output
Module AO
A
Excitation voltage
B
Signal in mA or Vdc
C
Common
Jumper M Jumper closed for mA output
Jumper V
Jumper closed for Vdc output
Figure 8 - Connections for ‘AO’ analog output module
2.1 Connection examples
mA
+ mA
V exc.
MV
MV
A B C
A B C
Module AO
Module AO
Jumper M Jumper closed
Jumper M Jumper closed
Jumper V
Jumper V
Jumper open
Figure 9 - Connections for active 4/20 mA. The current loop is
internally powered from the ‘AO’ module
6
- mA
Jumper open
Figure 10 - Connections for passive 4/20 mA. The current loop
is externally powered.
2.2 Configuration menu
At the ‘Mode’ (‘ModE’) menu configure the type of output
‘4/20 mA’ (‘mA’) or ‘0/10 Vdc‘ (‘Vdc’). Position for jumpers
‘V’ and ‘M’ must be according to the range selected.
At the ‘Scaling’ (‘ScAL’) menu enter the values that define
the two points of the slope:
• the lower point, defined by the ‘Low Display’ (‘d.Lo’)
and ‘Low Output’ (‘Ao.Lo’)
Mode 4/20 mA
Mode
Scaling
Mode 0/10 Vdc
Display low
• the upper point, defined by the ‘High Display’ (‘d.hI’)
and ‘High Output’ (‘Ao.hI’)
Output low
Analog output values are shown with ‘XX.XX’ format.
acceptable values are ‘0.00’ to ‘10.00’ Vdc for voltage, and
‘0.00’ to ‘20.00’ mA for current.
Display high
Reading
Example - 4/20 mA, analog output
associated to a reding of -50.0 to 100.0
‘d.hI’=‘100.0’
100.0
‘Ao.hI’=‘20.00’
‘On error’
Factory
configuration
in case of error, ‘to_h’
to drive output to high
level, ‘to_L’ to drive
output to low level
select ‘yES’ to reload
the default factory configuration
Version
4 mA
-50.0
Output high
20 mA
Analog
output
‘Ao.Lo’=‘4.00’
‘d.Lo’=‘-50.0’
2.3 Error codes
signal Vdc
MV
A B C
Module AO
common
‘Er.34’ output signal configured to value lower than 0 Vdc or 0 mA
‘Er.35’ output signal configured to a value higher than 10 Vdc or
20 mA
‘Er.36’ configured slope points are not acceptable, such as :
‘d.Hi’=’d.Lo’
‘Ao.Hi’=’Ao.Lo’
(‘Ao.Hi’-’Ao.Lo’)>(’d.Hi’-’d.Lo’)
Jumper M Jumper open
Jumper V
Jumper closed
Figure 11 - Connections for 0/10 Vdc.
7
3. Option RTU
The RTU modules provide 1 port for communications
in Modbus RTU protocol. Use function ‘4’ (‘Read Input
Registers’) of the Modbus RTU protocol, to access the
instrument registers (reading value, alarm status,
memory of maximum and minimum, setpoint values, ...).
Option
RTU
Type of output
Modbus RTU communication
Function implemented 4 (Read_Input_Registers)
Addresses
01 to 247
Exception codes
see section 3.3
Registers*
see section 3.1
*available registers can vary for different instruments
Bus
RS-485
Speed
57.6 Kbps to 600 bps
Data format
8e1 (standard), 8o1, 8n2
Bus terminator
not included
Isolation
1000 Vdc
Temperature
operation from 0 to 50 ºC
storage from -20 to +70 ºC
Factory configuration ‘Address
1’
‘Speed
19.2 Kbps’
‘Format
8e1’
‘Decimal point
Auto’
Installation allowed at slot 1, slot 2, slot 3
The communication parameters are configured from the
options menu entry (‘Opt.1’, ‘Opt.2’ or ‘Opt.3’) of the
instrument.
The RTU modules are isolated between them and
between all other circuits of the instrument.
Figure 12 - Detail for the ‘RTU’ module
A wire
B wire
GND
B A G
Module RTU
A
Bus signal A
B
Bus signal B
G
GND
Figure 13 - Connections for Modbus ‘RTU’ module
3.1 Registers accessible through Modbus RTU
Register Name
0
1
2
3
4
5
6
7
8
9
10
11
12
DISPLAY1_L
DISPLAY1_H
DECIMALES1
MAXMEM_L
MAXMEM_H
MINMEM_L
MINMEM_H
SETPOINT1_L
SETPOINT1_H
SETPOINT2_L
SETPOINT2_H
SETPOINT3_L
SETPOINT3_H
13
STATUS
14 a 16
Reserved
Description
Size
16 bits
16 bits
Decimals on display
16 bits
16 bits
Memory of maximum
16 bits
16 bits
Memory of minimum
16 bits
16 bits
Setpoint 1 value
16 bits
16 bits
Setpoint 2 value
16 bits
16 bits
Setpoint 3 value
16 bits
Alarm status
16 bits
Instrument status
Reserved
16 x 3 bits
Display value
Refresh
6 Digit Models
(LDB-26 y LDB-46)
4 Digit Models
(LDB-24 y LDB-44)
same
as display
999999 to -199999
9999 to -1999
0 to 6
0 to 4
999999 to -199999
9999 to -1999
999999 to -199999
9999 to -1999
999999 to -199999
9999 to -1999
999999 to -199999
9999 to -1999
999999 to -199999
9999 to -1999*
every
30 seconds
every
2 seconds
same
as display
bit 0...7 alarm status
bit 8...16 instrument status
Not accessible
Not accessible
Table 1 - Registers accessible through MODBUS-RTU. Registers codified as binary numbers. Negative values codified in two’s complement. Available
registers can vary for different instruments. Register 11 is not accessible for instruments with formats LDB-24 and LDB-44 ( slot 3 is not available).
8
3.2 Configuration menu
At the ‘Configuration’ (‘rtu’) menu, configure the ‘Address’
(‘Addr’) parameter with the address value between ‘1’ and
‘247’, at the ‘Speed’ (‘bAud’) parameter select the bus speed
(in Kbps) and at the ‘Format’ (‘bItS’) parameters select the
data format.
Inside the ‘Tools’ (‘TooL’) menu, special tools and functions
are grouped.
• the ‘Decimal point’ (‘dP’) menu is provided for
compatibility with ancient hardware that does not
support decimal point retransmission. By default, select
‘Automatic’(‘Auto’).Ifyourinstrumentdoesnostransmitthe
decimal point position, select ‘Manual’ (‘MAnL’) and fix
the position of the decimal point manually.
• at the ‘Factory reset’ (‘FAct’) menu, select ‘yes’ to load the
default factory configuration for the instrument.
the ‘Version’ (‘VEr’) menu informs of the current firmware
version installed in the module.
1 to 247
Configuration
Address
57.6 Kbps
...
...
to 600 bps
Speed
(kbps)
3.3 Exception codes
8 bits, even parity, 1 stop
Format
8 bits, odd parity, 1 stop
8 bits, no parity, 2 stop
Tools
Decimal point
Automatic
Manual
Move with LE
The Modbus RTU protocol defines the following scenarios
when a ‘Master’ is sending a frame to a ‘Slave’:
• the ‘Slave’ device receives the frame correctly and replies
with the requested data
• the ‘Slave’ devices detects a CRC error, parity error, or other.
and discards the frame without generating a reply frame. The
‘Master’ will detect a ‘TIMEOUT’ condition due to the absence
of reply.
• the ‘Slave’ device receives the frame correctly, but replies
with an ‘EXCEPTION_CODE’ as it can not process the function
or register requested.
The ‘EXCEPTION_CODES’ configured in the RTU module are :
Excep- Name
tion code
Factory
configuration
0
Description
ILLEGAL_FUNCTION
ILLEGAL_DATA_ADDRESS
Table 2 - Exception codes
1
Version
Requested function is not
supported
Requested register is not
supported
3.4 Compatible versions
Formats
LDB-26, LDB-46
--LDB26-P, LDB46-P
Firmware
version
Formats
LDB-24, LDB-44
Firmware
version
---
LDB24-P, LDB44-P
41.57
50.00
---
----LDB24-T, LDB44-T
----LDB24-R, LDB44-R
LDB26-C1, LDB46-C1
27.08
LDB24-C1, LDB44-C1
LDB26-CR, LDB46-CR
28.02
LDB24-C1, LDB44-C1
Table 3 - Firmware versions compatible with the indicated registers
--44.05
45.05
47.07
48.05
9
3.5 Description and example of registers
Registers R0 and R1 (DISPLAY1_L y DISPLAY1_H)
Contains the display value of the instrument, codified in
two registers of 16 bits each. Possible values are from
999999 to -199999. Decimal point position is codified at
register R2.
Example R0=FBF1 (hex) and R1=0009 (hex)
Register value = 0009 FBF1 (hex)
Reading value = 654321
Register R2 (DECIMALS1)
Contains the number of decimals of the display, codified
in a single register of 16 bits. Possible values are from
0 to 6.
Example R2=0002 (hex)
Number of decimals = 2 = 6543.21
Register R3 and R4 (MAXMEM_L and MAXMEM_H)
Contains the memory of maximum reading of the
instrument, codified in two registers of 16 bits each.
Possible values are from 999999 to -199999. Decimal
point position is codified on register R2.
Example - same example as in R0 and R1 but accessing
to R3 and R4.
Registers R5 and R6 (MINMEM_L and MINMEM_H)
Contains the memory of minimum reading of the
instrument, codified in two registers of 16 bits each.
Possible values are from 999999 to -199999. Decimal
point position is codified on register R2.
Example - same example as in R0 and R1 but accessing
to R5 and R6.
Registers R7 and R8 (SETPOINT1_L and SETPOINT1_H)
Contains the setpoint value of alarm 1, codified in two
registers of 16 bits each. Possible values are from 999999
to -199999. Decimal point position is codified on register
R2.
Example - same example as in R0 and R1 but accessing
to R7 and R8.
10
Registers R9 and R10 (SETPOINT2_L and SETPOINT2_H)
Contains the setpoint value of alarm 2, codified in two
registers of 16 bits each. Possible values are from 999999
to -199999. Decimal point position is codified on register
R2.
Example - same example as in R0 and R1 but accessing
to R9 and R10.
Registers R11 and R12 (SETPOINT3_L and SETPOINT3_H)
Contains the setpoint value of alarm 3, codified in two
registers of 16 bits each. Possible values are from 999999
to -199999. Decimal point position is codified on register
R2.
Example - same example as in R0 and R1 but accessing
to R11 and R12.
Register R13 (STATUS)
Information bit-by-bit, for the alarm status (on / off) and
instrument status. See below for a description.
Bit 0
Alarm 1 status (0 = inactive, 1 = active)
Bit 1
Alarm 2 status (0 = inactive, 1 = active)
Bit 2
Alarm 3 status (0 = inactive, 1 = active)
Bit 3 to 7 Reserved
Bit 8
Display overrange
Bit 9
Display underrange
Bit 10 Lost communication with the main processor
Bit 11 to 15 Reserved
Registers R14, R15 and R16
Reserved
4. Option S4
The S4 modules provide 1 port for communications RS485
ASCII protocol. Protocol with ‘master’ - ‘slave’ architecture,
addressable up to 31 modules. Frames codified in representable ASCII characters (codes 32 to 255), which are visible
using ‘hyperterminal’ or similar programs. Instrument
Option
S4
Type of output
RS-485 ASCII communication
Bus
RS-485
Speed
57.6 Kbps to 600 bps
Data format
8n1 (standard), 8o1, 8n2, 8e1
Bus terminator
not included
Protocol
ASCII
Architecture
‘master - slave’
Addresses
01 to 31
‘Broadcast’ address
128
Registers*
see section 4.1
*available registers can vary for different instruments
Isolation
1000 Vdc
Temperature
operation from 0 to 50 ºC
storage from -20 to +70 ºC
Factory configuration ‘Mode
Slave’
‘Address
1’
‘Speed
19.2 Kbps’
‘Format
8n1’
‘Decimal point
Auto’
Configuration ‘Master’ ‘Destination address 31’
‘Frequency
0.5 sec.’
Tools
‘Decimal point
Auto’
‘Legacy
Off’
‘Answer delay
0 mSec.’
Installation allowed at ‘Opt.1’, ‘Opt.2’, ‘Opt.3’
registers are accessible through the RS-485 ASCII port
(reading value, alarm status, memory of maximum and
minimum, setpoint values, ...). The communication
parameters are configured from the options menu
entry (‘Opt.1’, ‘Opt.2’ or ‘Opt.3’) of the instrument. The S4
modules are isolated between them and between all other
circuits of the instrument.
Figure 14 - Detail for the ‘S4’ module
A wire
GND
B wire
B A G
Module S4
A
Bus signal A
B
Bus signal B
G
GND
Figure 15 - Connections for ‘S4’ module
4.1 Accessible registers
Display values (DISPLAY1, MAXMEM, MINMEM, AL1, AL2,
AL3) are codified with a minimum of 6 digits (left zeros
are added if necessary), polarity and decimal point.
Register
Name
Description
0
DISPLAY1
Display1 value
1
MAXMEM
Memory of maximum
2
MINMEM
Memory of minimum
3
AL1
Setpoint 1 value
4
AL2
Setpoint 2 value
5
AL3
Setpoint 3 value
6
STATUS
Alarm status
Table 4 - Accessible registers for ASCII protocol.
Register 0 - DISPLAY1
Contains the display value of the instrument, in ASCII code,
including polarity (positive / negative) and decimal point.
Example 1 - R0=’+’ ‘0’ ’6’ ‘5’ ‘4’ ‘3’ ‘.’ ‘2’ Display value = 6543.2
Example 2 - R0=’-’ ‘0’ ‘0’ ‘0’ ‘4’ ‘.’ ‘5’ ‘2’ Display value = -4.52
Register 1 - MAXMEM
Contains the value for memory of maximum, in ASCII code,
including polarity (positive / negative) and decimal point.
Register 2 - MINMEM
Contains the value for memory of minimum, in ASCII code,
including polarity (positive / negative) and decimal point.
Register 3 - AL1
Contains the value for alarm 1 setpoint, in ASCII code,
including polarity (positive / negative) and decimal point.
Register 4 - AL2
Contains the value for alarm 2 setpoint, in ASCII code,
including polarity (positive / negative) and decimal point.
Register 5 - AL3
Contains the value for alarm 3 setpoint, in ASCII code,
including polarity (positive / negative) and decimal point.
Register 6 - STATUS
Contains the alarm status (on/off).
Bit 0 Alarm 1 status (0 = inactive, 1 = active)
Bit 1 Alarm 2 status (0 = inactive, 1 = active)
Bit 2 Alarm 3 status (0 = inactive, 1 = active)
Bit 3 to 15
Reserved
11
4.2 Configuration menu
Configuration
ASCII
Mode ‘Slave’
Mode
Address
Mode ‘Master’
1 a 31
Speed
(kbps)
Format
Configuration
‘Master’
Destination
address
1 to 31
128 for ‘broadcast’
0.1 seconds
0.5 seconds
1 seconds
5 seconds
15 seconds
60 seconds
Frequency
Tools
Decimal point
4.3 Compatible versions
Automatic
Manual
At the ‘Configuration ASCII’ (‘AScI’) menu, configure
the ‘Mode’ (‘ModE’) parameter to select the ‘slave’ or
the ‘master’ mode, at the ‘Address’ (‘Addr’) parameter
configure the local port address between ‘1’ and ‘31’, at
the ‘Speed’ (‘bAud’) parameter select the bus speed (in
Kbps) and at the ‘Format’ (‘bItS’) parameter select the data
format.
When working as ‘master’, the instrument continuously
transmits the display value data frame. The local module
address is ‘0’. Configure at menu ‘Configuration Master’
(‘cnF.M’) the ‘Destination address’ (‘d.Add’) parameter
from ‘1’ to ‘31’ or use value ‘128’ for a broadcast message.
At parameter ‘Frequency’ (‘FrEq’) select the how often the
frame with the reading value will be transmitted.
Special tools are grouped inside the ‘Tools’ (‘TooL’) menu.
• the ‘Decimal point’ (‘dP’) menu is provided for
compatibility with ancient hardware that does not
support decimal point retransmission. By default,
select ‘Automatic’ (‘Auto’). If your instrument does nos
transmit the decimal point position, select
‘Manual’(‘MAnL’)andfixthepositionofthedecimalpoint
manually.
• the ‘Legacy mode’ (‘LEG’) parameter is provided to
maintain compatibility with instruments with older
communication protocols. Select ‘on’ to activate this
mode.
• the ‘Answer delay’ (‘AnS.d’) parameter applies only
to ‘Slave’ mode. The local module delays the answer
frame. Configure for applications where the ‘Master’
needs additional time to switch between ‘transmit’ and
‘receive’ modes. Enter a numeric value between ‘0’ and
‘1000’ mSeconds.
• at the ‘Factory reset’ (‘FAct’) menu, select ‘yes’ to load
the default factory configuration for the instrument.
the ‘Version’ (‘VEr’) menu informs of the current
firmware version installed in the module.
use key ‘LE’ to
select
Formats
LDB-26, LDB-46
Version Formats
firmware LDB-24, LDB-44
Instruments with access to registers 0, 1, 2, 6
Legacy mode
Answer delay
Factory
configuration
Version
12
LDB24-P, LDB44-P
delay for answers, from 0
to 1000 mSec.
Version
firmware
LDB26-P, LDB46-P
50.00
---
41.57
---
LDB24-T, LDB44-T
44.05
LDB24-R, LDB44-R
45.05
LDB26-C1, LDB46-C1
27.08
LDB24-C1, LDB44-C1
47.07
LDB26-CR, LDB46-CR
28.02
LDB24-CR, LDB44-CR
48.05
Table 5 - Firmware versions compatible with the indicated registers
4.4 Frame types
The ASCII protocol defines the following frames:
• Frame ‘read’ (‘RD’). Id code 36. Request data frame. The
requested register is indicated into the ‘REG’ byte (‘Header’
section).
• Frame ‘answer’ (‘ANS’). Id code 37. Response frame to a
request data frame. The requested register is indicated
into the ‘REG’ byte’ (‘Header’ section). Data of the requested register is indicated into data bytes ‘D0’ to ‘Dn’ (‘Data’
section).
• Frame ‘error’ (‘ERR’). Id code 38. Response frame to a
request data frame. Indicates that an error has occurred.
Error code is codified into the ‘REG’ byte (‘Header’ section).
• Frame ‘ping’ (‘PING’). Id code 32. Used to confirm the
existence of the remote instrument.
• Frame ‘pong’ (‘PONG’). Id code 33. Response to a ‘ping’
frame. It confirms the existence of the remote instrument.
4.5 Frame structure
STX
2
ID
x
RSV
32
0
1
2
Header
FROM
TO
x
x
3
4
Data
REG
x
RSV
32
LONG
n+1
D0
5
6
7
8
Protocol frames have a structure made of ‘Header’, ‘Data’ and ‘Trail’.
Section ‘Header’
Contains the start byte (‘STX’), the frame identifier (‘ID’), the
origin address (‘FROM’) and the destination address (‘TO’),
the register id (‘REG’) and the length (‘LONG’) of the ‘Data’
section.
Section ‘Data’
Contains data for the requested register (‘REG’).
Trail
D1
...
[data]
9
...
Dn
CRC
x
ETX
3
n+7
n+8
n+9
Section ‘Trail’
Contains the ‘CRC’ code and the end of frame byte (‘ETX’).
‘Real value’ and ‘Frame value’
To use representable ASCII values, the real values are codified
before being sent into the frame. The following definitions apply :
• ‘real value’ is the value of the field without codification
• ‘frame value’ is the value of the field, codified
Field
Description
Size
Position
Real value
Frame value
STX
Start of frame
1 byte
0
does not apply
2
ID
Frame type
1 byte
1
(see section 4.4)
real_value
RSV
Reserved
1 byte
2
0
32
FROM
Origin address
1 byte
3
0 (‘Master’) / 1 to 31 (‘Slave’) 32 + real_value
TO
Destination address
1 byte
4
0 (‘Master’) / 1 to 31 (‘Slave’) 32 + real_value
128 (‘broadcast’)
REG
Register identification
1 byte
5
(see section 4.1)
32 + real_value
RSV
Reserved
1 byte
6
0
32
LONG
Length of ‘Data’ section
1 byte
7
n (between 0 and 32)
32 + real_value
D0 … Dn
Data
n bytes
8 to n+7
number 0 to 9
decimal point
polarity (+/-)
ASCII code of the number (48 to 57)
ASCII code of decimal point (46)
ASCII code of ‘+’ (43)
ASCII code of ‘-’ (45)
CRC
CRC calculation
1 byte
n+8
does not apply
(see section 4.7)
ETX
End of frame
1 byte
n+9
does not apply
3
Table 6 - Description of the bytes for the ASCII frame
4.6 Error codes
Frames ‘ERR’ contain within the ‘REG’ field, the error code.
Available error codes are :
error 1
unknown register
error 2
error 3
error 4
error 5
display overrange
display underrange
CRC error
internal error
13
4.8 Frame examples
4.8.1 Frames ‘RD’ (36) and ‘ANS’ (37)
Example - ‘Master’ (address ‘0’) requests the value of register
‘0’ (display value) to the ‘Slave’ at address ‘28’ (‘RD’ frame)
and the ‘Slave’ replies to the ‘Master’ with a reply frame (‘ANS’
frame) containing the requested data (765.43).
*Instruments with 4 digits also send reading values formatted
with 6 digits : value -321.5 is transmitted as -00321.5
Header
STX
2
Start
Trail
ID
36
RD
RSV
32
---
FROM TO
32
60
0
28
REG
32
0
RSV
32
---
LONG
32
0
Header
STX
2
Start
CRC
58
CRC
ETX
3
Stop
Data
ID
37
ANS
RSV
32
---
FROM TO
60
32
28
0
REG
32
0
RSV
32
---
LONG
40
8
Trail
D0 D1 D2 D3 D4 D5 D6 D7 CRC
43 48 55 54 53 46 52 51 15
+0765.43
CRC
ETX
3
Stop
4.8.2 Frames ‘ERR’ (38)
Example - ‘Slave’ at address ‘11’ replies to the ‘Master’
(address ‘0’) with an error frame (‘ERR’ frame)
indicating that the requested register number is unknown
(‘UNKNOWN_REGISTER’, error code ‘1’). The error code
is codified into the ‘REG’ byte. For a list of error code see
section 4.6.
Header
STX
2
Start
Trail
ID
38
ERR
RSV
32
---
FROM TO
43
32
11
0
REG
33
1
RSV
32
---
LONG
32
0
4.7.1 Frames ‘PING’ (32) and ‘PONG’ (33)
CRC
46
CRC
ETX
3
Stop
4.7 CRC calculation
Example - ‘Master’ (address ‘0’) requests confirmation of
existence to the ‘Slave’ at addrress ‘22’ (‘PING’ frame) and
the ‘Slave’ replies to the ‘Master’ with a ‘PONG’ frame.
Header
STX ID
RSV
2
32
32
Start Ping ---
FROM TO
32
54
0
22
Header
STX ID
RSV
2
33
32
Start Pong ---
14
FROM TO
54
32
22
0
The ‘frame value’ for the CRC byte is calculated applying a
XOR function to the ‘frame value’ (see section 4.5) of all bytes
in sections ‘Header’ and ‘Data’, from byte ‘0’ (‘STX’) to the last
data byte (‘Dn’).
Trail
REG RSV LONG CRC ETX • if the calculated CRC value is lower than ‘32’, it is normalized
32
32
32
52
3
by applying the ‘one’s complement’ function .
0
--0
CRC Stop CRC0=STX ^ ID ^ RSV ^ FROM ^ TO ^ REG ^ RSV ^ LONG ^ D0
^...^ Dn
• if (CRC0<32) -> CRC=!CRC0 (one’s complement function)
Trail
• if (CRC0>31) -> CRC=CRC0
REG RSV LONG CRC ETX
32
0
32
---
32
0
53
3
CRC Stop
//example of CRC calculation in C language
int8 Calculate_CRC(int8 CRC_Position)
{
int8 i,CRC=0;
for(i=0;c<CRC_Position;c++)
{
crc=crc ^ frame[i];
}
if(crc<32) CRC=~CRC;
return(CRC);
}
5. Option S2
The S2 modules provide 1 port for communications
RS232 ASCII protocol. The S2 modules use the same
protocol as the S4 modules (see section 4), the only
difference is the physical layer of the bus, that is RS232
for the S2.
S2 modules allow for point-to-point communication over
RS232 and also allow for multinode communication over
Option
Type of output
Bus
Speed
Data format
S2
RS-232 ASCII communication
RS-232
57.6 Kbps a 600 bps
8n1 (standard), 8o1, 8n2, 8e1
RS232 using a ‘Daisy-Chain’ type of connection.
Terminals RX1 and TX1 are for the main communication
with the RS232 bus. Terminals RX2 and TX2 are for the
multinode connection, so all frames received at RX1 with
destination address different from the local address, will
be retransmitted through TX2. On the same way, frames
received at RX2 with destination address different from
the local address, will be retransmitted through TX1.
Figure 16 - Detail for the ‘S2’ module
Protocol
ASCII
Architecture
‘master - slave’
Address
01 to 31
‘Broadcast’ address
128
Registers*
see section for S4 module
*available registers can vary for different instruments
Isolation
1000 Vdc
Temperature
operation from 0 to 50 ºC
storage from -20 to +70 ºC
Installation allowed at ‘Opt.1’, ‘Opt.2’, ‘Opt.3’
Tx1
Rx2
Rx1
Tx2
GND
A B C D E
Module S2
A
GND
B
Rx data reception
C
Tx data transmission
D
‘Daisy chain’ Rx data reception
E
‘Daisy chain’ Tx data transmission
Figure 17 - Connections for ‘S2’ module
15
1. Remote keypad LDB-RKB
Industrial keypad with 3 push buttons to connect to large format meters from LDB series. It allows to replicate the front
keypad of the instrument to a remote location.
A RKB remote keypad allows the operator to access the
advanced control functions from the large format
meters, such as fast access to alarm setpoints, preset value
modification, access to maximum and minimum reading
values, signal tare for load applications, front reset, manual
alarm unlock, ...
All these features are accessible while maintaining the main
feature of these instruments, which is the installation in
heights for long distance reading.
The RKB remote keypad is provided with an industrial IP65
protected housing, with cable gland output, aligned with the
technical specifications of the LDB series. The RKB remote
keypad can be easily installed against wall. The push buttons
are 25 mm size for easy use even with protection gloves.
The RKB remote keypad is provided with labeled push
buttons and does not included cable.
Normal button state
Recommended wire
Protection
Output
Mounting
Color
Material
Weight
open
0.25 mm2
IP65
by cable gland
accepts wall mount
grey
plastic
200 gr
GND
SQ(<)
UP (5)
LE (3)
181 mm
75 mm
Connect the wire to the 4 pole terminal located close to the
input signal module. Connect 4 wires for keys ‘SQ’ (<), ‘UP’
(5), ‘LE’ (3) and common. Pass the wires through the cable
gland identified as ‘remote keypad’ (see Figure 2) and connect
the other end to the internal RKB push buttons.
2
GND
SQ (<)
UP (5)
LE (3)
Figure 1 - Connections from RKB to the internal 4 pole terminal
Power
Remote keypad
Option 3 Option 2 Option 1
Signal
Figure 2 - LDB-26 instrument front view (top), rear view (middle) and internal view (bottom).
3
WARRANTY/DISCLAIMER
OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a
period of 61 months from date of purchase. OMEGA’s WARRANTY adds an additional one (1) month grace
period to the normal five (5) year product warranty to cover handling and shipping time. This ensures
that OMEGA’s customers receive maximum coverage on each product.
If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer Service
Department will issue an Authorized Return (AR) number immediately upon phone or written request.
Upon examination by OMEGA, if the unit is found to be defective, it will be repaired or replaced at no
charge. OMEGA’s WARRANTY does not apply to defects resulting from any action of the purchaser,
including but not limited to mishandling, improper interfacing, operation outside of design limits,
improper repair, or unauthorized modification. This WARRANTY is VOID if the unit shows evidence of
having been tampered with or shows evidence of having been damaged as a result of excessive corrosion;
or current, heat, moisture or vibration; improper specification; misapplication; misuse or other operating
conditions outside of OMEGA’s control. Components in which wear is not warranted, include but are not
limited to contact points, fuses, and triacs.
OMEGA is pleased to offer suggestions on the use of its various products. However,
OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for
any damages that result from the use of its products in accordance with information provided
by OMEGA, either verbal or written. OMEGA warrants only that the parts manufactured by the
company will be as specified and free of defects. OMEGA MAKES NO OTHER WARRANTIES OR
REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF
TITLE, AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF
LIABILITY: The remedies of purchaser set forth herein are exclusive, and the total liability of
OMEGA with respect to this order, whether based on contract, warranty, negligence,
indemnification, strict liability or otherwise, shall not exceed the purchase price of the
component upon which liability is based. In no event shall OMEGA be liable for
consequential, incidental or special damages.
CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic
Component” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical
applications or used on humans. Should any Product(s) be used in or with any nuclear installation or
activity, medical application, used on humans, or misused in any way, OMEGA assumes no responsibility
as set forth in our basic WARRANTY/DISCLAIMER language, and, additionally, purchaser will indemnify
OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the
Product(s) in such a manner.
RETURN REQUESTS/INQUIRIES
Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE
RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN (AR)
NUMBER FROM OMEGA’S CUSTOMER SERVICE DEPARTMENT (IN ORDER TO AVOID PROCESSING
DELAYS). The assigned AR number should then be marked on the outside of the return package and on any
correspondence.
The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent
breakage in transit.
FOR NON-WARRANTY REPAIRS, consult
FOR WARRANTY RETURNS, please have the
OMEGA for current repair charges. Have
following information available BEFORE contacting
the following information available BEFORE
OMEGA:
contacting OMEGA:
1.Purchase Order number under which the product
1. Purchase Order number to cover the COST
was PURCHASED,
of the repair,
2.Model and serial number of the product under
2. Model and serial number of the product, and
warranty, and
3. Repair instructions and/or specific problems
3. Repair instructions and/or specific problems
relative to the product.
relative to the product.
OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible. This affords our
customers the latest in technology and engineering.
OMEGA is a trademark of OMEGA ENGINEERING, INC.
© Copyright 2018 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied,
reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without the prior
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U Controllers, Calibrators, Simulators & Pumps
M
U Industrial pH & Conductivity Equipment
DATA ACQUISITION
M
U Communications-Based Acquisition Systems
M
U Data Logging Systems
M
U Wireless Sensors, Transmitters, & Receivers
M
U Signal Conditioners
M
U Data Acquisition Software
HEATERS
M
U Heating Cable
M
U Cartridge & Strip Heaters
M
U Immersion & Band Heaters
M
U Flexible Heaters
M
U Laboratory Heaters
ENVIRONMENTAL
MONITORING AND CONTROL
M
U Metering & Control Instrumentation
M
U Refractometers
M
U Pumps & Tubing
M
U Air, Soil & Water Monitors
M
U Industrial Water & Wastewater Treatment
M
U pH, Conductivity & Dissolved Oxygen Instruments
M5680/0318
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