Omega | LDB-C1 | Owner Manual | Omega LDB-C1 Owner Manual

Omega LDB-C1 Owner Manual
TM
User’s Guide
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LDB-C1
Impulse Counters and Ratemeters
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the right to alter specifications without notice.
1. LDC-C1 Series
Large format industrial meters with impulse counter, ratemeter and periodmeter functions
Large format meters for long distance reading, for industrial
applications. Different formats available with 4 and 6 digits,
with 60 mm and 100 m digit height. Front keypad to access
the configuration menu, and optional remote keypad.
Instruments with 5 impulse counter modes (see section
1.13.3), 2 ratemeter modes (see section 1.13.9) and 1
periodmeter mode (see section 1.13.9).
Highly configurable, accepts all types of sensors (NPN,
PNP, push-pull, Namur, inductive, pick-up, mechanical, TTL,
CMOS, ...) including single and bidirectional encoder signals.
Reading from 999999 to -199999 (or 9999 to -1999 for
4 digit formats) with configurable decimal point, scalable
reading with configurable multiplier (1 to 999999) and divider
factors (1 to 999999). Includes internal pull-up and pull-down
resistors, configurable trigger levels, detection by rising or
falling edge, excitation voltage configurable from 5 Vdc to
18 Vdc.
Output and control options with 1, 2 and 3 relays,
transistor outputs, controls for SSR relays, isolated analog
outputs, communications in Modbus RTU, RS-485 ASCII and
RS232.
Sturdy metal housing with full IP65 protection. Internal
connections by plug-in screw clamp terminals, and output
through cable glands. Housing prepared for panel, wall and
hanging mount.
• Configurable ‘Fast access’ to selected functions with key
‘UP’ (5) (see section 1.13.17)
• ‘On power up’ for system protection on ‘cold’ start-up and
control of alarm status (see section 1.13.18)
• ‘FAST’ mode for fast counter applications (see section
1.13.3)
• ‘SLOW’ mode for ratemeters applications at low
frequencies (slow applications) (see section 1.13.9)
• Easy configuration for most usual sensors at the ‘SnSr/
Auto’ menu (see section 1.13.14)
• a larms with 1 or 2 setpoints, independent activation
and deactivation delays, hysteresis, manual unlocking, ...
(see section 1.13.15)
Multiple display filters, memory of maximum and minimum
reading, password protection, 5 brightness levels.
1.1 How to use this manual
If this is the first time you are configuring an LDB Series in order to have a full and clear view of the characteristics
large format meter, below are the steps to follow to install of the instrument. Do not forget to read the installation
and configure the instrument. Read all the manual sections precautions at section 1.17.
1. Identify the instrument format (see section 1.4)
2. Power and signal connections
- open the instrument (see section 1.5)
- connect the power (see section 1.7)
- connect the signal (see section 1.8)
- close the instrument (see section 1.5)
3. Configure the instrument (see section 1.13)
- select the main function, and the decimal point position
(see section 1.13.2)
- configure the main function selected (see section 1.13.2)
• counter modes from section 1.13.3
• ratemeter and periodmeter from section 1.13.9
- configure the sensor (see section 1.13.13)
2
4. Advanced configuration (optional)
- configure the instrument alarms (see section 1.13.15)
- configure the fast access (see section 1.13.17), ‘on power
up’ (1.13.18), key ‘LE’ (1.13.19) and password (1.13.26)
5. If the instrument includes analog output (AO) or serial
communications (RTU, S4, S2)
- to include an option to an instrument see section 1.6
- to configure an installed option, access the option
configuration menu (see section 1.13.30)
- see section 2 for information regarding the output and
control options available
6. Install the instrument
- mount on panel, wall or hanging (see section 1.16)
- adjust the brightness level according to your
environmental needs (see section 1.13.29)
1.2 How to order
Format
Model
LDB-46 C1
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-C1 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
1.9 Connections for remote keypad . . . . . . . . . . . . 7
1.10 Technical specifications . . . . . . . . . . . . . . . . 8
1.11 Functions included . . . . . . . . . . . . . . . . . . 9
1.12 Messages and errors . . . . . . . . . . . . . . . . . 9
1.13 Configuration . . . . . . . . . . . . . . . . . . . . . 10
1.13.1 How to operate the menus . . . . . . . . . . . 10
1.13.2 Initial set-up . . . . . . . . . . . . . . . . . . . . 11
1.13.3 Counter modes description . . . . . . . . . . . 12
1.13.4 Standard counter ‘cn.1’ configuration menu . . 12
1.13.5 Quadrature counter ‘cnq.2’ configuration menu12
1.13.6 Counter + inhibition ‘cn.3’ configuration menu 13
1.13.7 Counter + control add / subtract ‘cnc.4’ configuration menu13
1.13.8 Differential counter ‘cnd.5’ configuration menu 13
1.13.9 Ratemeter and periodmeter modes description14
1.13.10 Ratemeter ‘rt.6’ configuration menu . . . . . 14
1.13.11 Quadrature ratemeter ‘rtq.7’ configuration menu . 15
1.13.12 Periodmeter ‘Prd.8’ configuration menu . . . 15
1.13.13 Accepted sensors and signals . . . . . . . . . 16
1.13.14 Sensor configuration menu . . . . . . . . . . . 17
1.13.15 Alarms . . . . . . . . . . . . . . . . . . . . . . 18
1.13.16 Alarms configuration menu . . . . . . . . . . 19
1.13.17 Fast access . . . . . . . . . . . . . . . . . . . . 20
1.13.18 ‘On power up’ function . . . . . . . . . . . . . 20
1.13.19 Key ‘LE’ . . . . . . . . . . . . . . . . . . . . . . 20
1.13.20 ‘Fast access’ configuration menu . . . . . . . 21
1.13.21 ‘On power up’ configuration menu . . . . . . 21
1.13.22 ‘Key LE’ configuration menu . . . . . . . . . . 21
1.13.23 ‘Overrange / underrange’ function . . . . . . 22
1.13.24 Left zeros function . . . . . . . . . . . . . . . 22
1.13.25 Excitation voltage function . . . . . . . . . . . 22
1.13.26 ‘Password’ function . . . . . . . . . . . . . . . 23
1.13.27 Default factory configuration . . . . . . . . . . 23
1.13.28 Firmware version . . . . . . . . . . . . . . . . 23
1.13.29 Brightness configuration . . . . . . . . . . . . 23
1.13.30 Access to the options configuration menu . . 23
1.14 Full configuration menu . . . . . . . . . . . . . . . 24
1.15 Factory configuration . . . . . . . . . . . . . . . . 27
1.16 Mounting . . . . . . . . . . . . . . . . . . . . . . . 28
1.17 Installation precautions . . . . . . . . . . . . . . . 29
1.18 Warranty . . . . . . . . . . . . . . . . . . . . . . . 29
1.19 CE declaration of conformity . . . . . . . . . . . . 29
2. Output and control modules . . . . . . . . . . . . . . . 30
2.1 Module R1 . . . . . . . . . . . . . . . . . . . . . . . 30
2.2 Module T1 . . . . . . . . . . . . . . . . . . . . . . . 30
2.3 Module SSR . . . . . . . . . . . . . . . . . . . . . . 31
2.4 Module AO . . . . . . . . . . . . . . . . . . . . . . . 31
2.5 Module RTU . . . . . . . . . . . . . . . . . . . . . . 32
2.6 Module S4 . . . . . . . . . . . . . . . . . . . . . . . 32
2.7 Module S2 . . . . . . . . . . . . . . . . . . . . . . . 33
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
Cut-out G
722 mm (±1)
Cut-out F
148 mm (±1)
E D C 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 from LDB Series 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
PE
Figure 2 - Location of the internal ‘PE’ fixed screw and power cable gland
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).
3. Pass the signal cable through the signal cable gland
(see section 1.4).
4. Connect the input signal cables (see Figure 4).
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.
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).
GND
SQ
UP
LE
Channel A
Channel B
Vexc.
Reset
0V
Input Signal
Rst B A Vexc 0V
Channel A Input ‘A’ for impulses
Channel B Input ‘B’ for impulses
Reset
Reset connection
Vexc
Excitation voltage
0V
Common
Figure 4 - Signal connections
7
1.10 Technical specifications
Digits
number of digits
digit
view angle
color
digit height
Reading
max., min.
decimal point
overrange / underrange
display refresh
memory
Input signal
signals accepted
vdc max. at input
input impedance
frequency max./min.
quartz accuracy
thermal drift
wires section
Excitation voltage
output voltage
maximum current
protection
Power
power ‘H’
4 or 6 (see Table 9)
7 segments
120º
red or green
(see Table 9)
(see Table 9)
configurable
configurable (flash, reset or
preset) (see section 1.13.23)
15 refresh / second
yes, recovers the last counter
value after power loss
NPN, PNP, Namur, pick-up,
TTL, inductive, mechanical,
quadrature, ...
±30 Vdc
2.4 K with pull-up or pull-down
470 K without pull resistances
for counter modes (see Table 12)
for ratemeter modes (see Table 13)
for periodmeter modes (see
Table 13)
±0.01 %
20 ppm / ºC
max. 0.5 mm2
+18 Vdc, +15 Vdc, +9 Vdc, +5 Vdc
selectable by menu
70 mA
yes, current limited to 70 mA
Format LDB-24
Format LDB-44
Format LDB-26
Format LDB-46
4
4
6
6
60 mm
100 mm
60 mm
100 mm
25 meters
50 meters
25 meters
50 meters
2
2
3
3
Number of digits
Digit height
Reading distance
Slots for output and control options
Maximum reading
9999
999999
Minimum reading
-1999
-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 9 - Technical specifications associated to format
8
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 9)
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 9)
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
1.11 Functions included
Counters
Mode
Frequency
Section
Functions included
Section
Fast access menu
yes, configurable
1.13.17
max. 9 KHz
‘SLOW’ mode
yes, for slow frequencies
1.13.9
Counter + inhibition
max. 9 KHz
‘FAST’ mode
yes, for fast counting
1.13.3
Counter + control Add / Subtract
max. 9 KHz
Multiplier and divider from 1 to 999999
Differential counter
max. 9 KHz
Counter
Quadrature
counter
‘FAST’ mode
normal mode
max. 250 KHz
mode x1
max. 17 KHz
mode x2
max. 16 KHz
mode x4
max. 11 KHz
1.13.3
Table 12 - Maximum frequency for counter modes
Ratemeter
Ratemeter
Quadrature
Ratemeter
Mode
Frequency
normal mode
max. 500 KHz
‘SLOW’ mode
max. 200 Hz
min. 1 mHz
Section
1.13.9
Reset
1.13.3
configurable : front, external 1.13.15
and linked to alarm
1.13.19
Preset
yes
1.13.3
Trigger level
configurable
1.13.13
Sensor selection
by menu
1.13.13
Cycle counter
yes
1.13.15
Retention memory
‘On Power Up’
yes, recovers with power
yes
1.13.18
Excitation voltage
configurable
1.13.13
Average filter
recursive
1.13.3
1.13.9
max. 17 KHz
mode x2
max. 16 KHz
Memory
max., min., cycles
1.13.17
mode x4
max. 11 KHz
Password
configuration locked
simple or double setpoint
activation delays
deactivation delays
hysteresis
inverted relays
locked alarms
configurable, 5 levels
1.13.26
Alarms
Periodmeter
1.10
mode x1
Table 13 - Maximum and minimum frequency for ratemeter
modes
Periodmeter
1.13.3
1.13.9
Mode
Frequency
normal mode
max. 500 KHz
‘SLOW’ mode
max. 200 Hz
min. 1 mHz
(1000 sec.)
Section
Brightness
1.13.9
Table 14 - Maximum and minimum frequency for periodmeter
modes
1.13.15
1.13.29
Table 10 - Functions included
1.12 Messages and errors
Error messages related to the local instrument are shown on
display, in flash mode (see Table 11). Examples given are for
instrument with 6 digit formats.
Messages and errors on display
‘Err.1’
incorrect password.
‘Err.2’
at ‘oPt.X’ menu entry. Installed module is not
recognized.
‘Err.W’
‘Watchdog’ error
‘999999’ + flashing mode. Reading is in overrange.
‘-199999’ + flashing mode. Reading is in underrange.
Table 11 - Messages and error codes for local instrument
9
1.13 Configuration
1.13.1 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
‘Configuration menu’ (key ‘SQ’) (<)
the menu, the ‘LE’ (5) acts as an ‘ESCAPE’. It leaves the
‘Fast access’ menu (key ‘UP’) (5)
selected menu level and eventually, by leaving all menu
levels, it leaves from the configuration menu. Then changes
Configuration menu
are applied and the instrument is back to normal function.
The ‘configuration menu’ modifies the configuration When entering a numerical value, it selects the active digit,
parameters to adapt the instrument to the application and the value is then modified by key ‘UP’ (5).
needs. To access the ‘configuration menu’ press for 1
second the ‘SQ’ (<) key. This access can be blocked by ‘Rollback’
activating 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 Instruments with 4 and 6 digits
reset, 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 1.14.
‘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 1.13.17 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 5 - Example of operation inside the ‘configuration menu’
1.13.2 Initial set-up
Press ‘SQ’ (<) for 1 second to access the ‘configuration
menu’. For a description on how to operate inside the menus
see section 1.13.1. For a full vision of the ‘configuration menu’
structure see section 1.14.
Counter
Main function
Quadrature counter
Counter + inhibition
Counter + control add / subtract
Differential counter
Ratemeter
Quadrature Ratemeter
Periodmeter
To configure the initial set up, select the main function for
the instrument, the decimal point position, configure the
main function selected and configure the sensor.
Enter the ‘Main function’ (‘Func’) menu and select the
desired function, from the 5 counting modes, 2 ratemeter
modes and the periodmeter mode available.
• select ‘Counter’ (‘cn. 1’) for a standard impulse counter.
Impulses are received at channel A. Channel B is disabled.
• select ‘Counter quadrature’ (‘cnq.2’) for a
quadrature counter.ImpulsesarereceivedatchannelAandB,in
quadrature format (typical for bidirectional encoders).
• select ‘Counter + inhibition’ (‘cnI.3’) for a counter with
an external control to inhibit the counting. Impulses are
received at channel A. The state of channel B controls de
inhibition function.
• select ‘Counter + control add / subtract’ (‘cnc.4’) for
a counter with an external control to add or subtract
impulses received. Impulses received at channel A. The
state of channel B controls de add or subtract function.
• select ‘Counter differential’ (‘cnd.5’) for a counter
where impulses received at channel A add and impulses
received at channel B subtract.
Decimal point
The next menu entry is the configuration parameters for the ‘Main
function’ (‘Func’) selected. Configuration parameters are slightly
different for each ‘main function’. All possible configuration menus
are explained, ‘cnF.1’ to ‘cnF.7’, one for each ‘main function’. Only
the configuration menu for the ‘main function’ selected is visible
on the instrument.
• select ‘Ratemeter’ (‘rt.6’) for a standard ratemeter.
Impulses are received at channel A. Channel B is disabled.
• select ‘Ratemeter quadrature’ (‘rtq.7’) for a quadrature
ratemeter. Impulses are received at channel A and B, in
quadrature format (typical for bidirectional encoders.
• select ‘Periodmeter’ (‘Prd.8’) for a standard periodmeter.
Impulses are received at channel A. Channel B is disabled.
At the ‘Decimal point’ (‘dP’) parameter, select the decimal
point position. Move the decimal point with the ‘LE’ (3) key.
Configure the function mode selected (‘cnF.2’ to ‘cnF.8’) at
the next menu entry (‘cnF.1’ to ‘cnF.8’). See sections 1.13.3
to 1.13.12.
Configure the sensor at the ‘SnSr’ menu. See section 1.13.13.
11
1.13.3 Counter modes description
The instrument offers 5 selectable impulse counter modes.
Each mode has 2 independent input channels ‘A’ and ‘B’. Each
impulse counter mode has a specific function assigned to
channel ‘B’.
• S tandard counter (‘cn.1’) (see section 1.13.4) counts
impulses received at channel ‘A’. This counter has an
optional ‘FAST’ mode to count high frequencies up to
250 KHz. The ‘FAST’ mode detects impulses on the
rising edge of the impulse. The first edge received (rising or
falling) after the instrument start up (after power loss or
configuration change) will not be counted as a valid
impulse, as it is needed for internal initialization.
• Quadrature counter (‘cnq.2’) (see section 1.13.5) counts
quadrature impulses received at channels ‘A’ and ‘B’, (for
example from a bidirectional encoder). The counter
increases or decreases depending on the sense of turn of
the encoder.
• Counter with inhibit (‘cnI.3’) (see section 1.13.6) counts
impulses received at channel ‘A’ if channel ‘B’ is inactive.
Activate channel ‘B’ to inhibit the counting of impulses
received at channel ‘A’.
• Counter with add / subtract control (‘cnc.4’) (see section
1.13.7) increases the counter with impulses received at
channel ‘A’ if channel ‘B’ is active. Deactivate channel ‘B’ to
decrease the counter with impulses received at channel ‘A’.
• Differential counter (‘cnd.5’) (see section 1.13.8)
increases the counter with impulses receive at channel ‘A’
and decreases the counter with impulses received at
channel ‘B’.
All counter modes have scalable reading through
multiplier (1 to 999999) and divider (1 to 999999)
parameters, configurable preset value (preset value loads on
display when ‘reset’ function activates), configurable reset
function and accessible from external terminal, front keypad
or at alarm activation. Alarms with independent activation
and deactivation delays and functions to load ‘preset’ or ‘0’
to generate cycles of counting from ‘preset’ to ‘alarm
setpoint’ and back. The number of cycles is accessible.
In case of power loss, the instrument recovers the last
configuration and last counted value.
1.13.4 Standard counter ‘cn.1’ configuration menu
Counter
configuration
Multiplier
Multiplier
1 to 999999
Divider
Divider
1 to 999999
Preset
Preset value
-199999 to 999999
Increasing
Mode
Decreasing
‘FAST’ mode
Configuration menu for mode ‘counter’ (‘cn.1’). Total
impulses received are multiplied by the value of the
‘multiplier’ (‘MuLt’) parameter and divided by the ‘divider’
(‘dIV’) parameter. Result is shown on the display.
• set the ‘Multiplier’ (‘MuLt’) parameter from 1 to 999999.
• set the ‘Divider’ (‘dIV’) parameter from 1 to 999999.
• set the ‘Preset’ (‘PrSt’) parameter from -199999 to 999999.
Activate the reset to load the preset value on display.
• at the (‘ModE’) parameter select ‘uP’ to count upwards
(impulses received add) or select ‘doWn’ to count
downwards (impulses received subtract).
• a t the ‘FAST’ (‘FASt’) parameter select ‘on’ to activate the
fast mode. See section 1.13.3 for more information.
1.13.5 Quadrature counter ‘cnq.2’ configuration menu
Quadrature
counter conf.
Multiplier
Multiplier
1 to 999999
Divider
Divider
1 to 999999
Preset
Preset value
-199999 to 999999
1 imp. per cycle
Quadrature
edges
2 imp. per cycle
4 imp. per cycle
12
Configuration menu for mode ‘quadrature counter’ (‘cnq.2’).
Total impulses received are multiplied by the value of the
‘multiplier’ (‘MuLt’) parameter and divided by the ‘divider’
(‘dIV’) parameter. Result is shown on the display..
• set the ‘Multiplier’ (‘MuLt’) parameter from 1 to 999999.
• set the ‘Divider’ (‘dIV’) parameter from 1 to 999999.
• set the ‘Preset’ (‘PrSt’) parameter from -199999 to 999999.
Activate the reset to load the preset value on display.
• at the ‘Quadrature edges’ (‘q.124’) parameter select the
number of edges to consider. Select ‘1--1’ for 1 impulse
per quadrature cycle, ‘1--2’ for 2 impulses per quadrature
cycle, ‘1--4’ for 4 impulses per quadrature cycle.
1.13.6 Counter + inhibition ‘cn.3’ configuration menu
Counter +
inhibition conf.
Multiplier
Multiplier
1 to 999999
Divider
Divider
1 to 999999
Preset
Preset value
-199999 to 999999
Increasing
Mode
Inhibition
Decreasing
Inhibits if channel
‘B’ to high
Inhibits if channel
‘B’ to low
Configuration menu for mode ‘counter + control inhibition’
(‘cnI.3’). Total impulses received are multiplied by the value
of the ‘multiplier’ (‘MuLt’) parameter and divided by the
‘divider’ (‘dIV’) parameter. Result is shown on the display.
• set the ‘Multiplier’ (‘MuLt’) parameter from 1 to 999999.
• set the ‘Divider’ (‘dIV’) parameter from 1 to 999999.
• set the ‘Preset’ (‘PrSt’) parameter from -199999 to 999999.
Activate the reset to load the preset value on display.
• at the ‘Mode’ (‘ModE’) parameter select ‘uP’ to count
upwards (impulses increase the counter) or select ‘doWn’ to
count downwards (impulses decrease the counter).
• at the ‘inhibition’ (‘Inh’) parameter select ‘on_h’ to inhibit
the counter when channel ‘B’ is active (logical state ‘1’) or
select ‘on_0’ to inhibit the counter when channel ‘B’ is
inactive (logical state ‘0’).
1.13.7 Counter + control add / subtract ‘cnc.4’ configuration menu
Counter + control
add / subtract conf.
Multiplier
Multiplier
1 to 999999
Divider
Divider
1 to 999999
Preset
Preset value
-199999 to 999999
Control A/S
Adds if channel ‘B’
to high
Subtracts if channel ‘B’ to low
Configuration menu for mode ‘counter + control add/
subtract’ (‘cnc.4’). Total impulses received are multiplied by
the value of the ‘multiplier’ (‘MuLt’) parameter and divided
by the ‘divider’ (‘dIV’) parameter. Result is shown on the
display.
• set the ‘Multiplier’ (‘MuLt’) parameter from 1 to 999999.
• set the ‘Divider’ (‘dIV’) parameter from 1 to 999999.
• set the ‘Preset’ (‘PrSt’) parameter from -199999 to 999999.
Activate the reset to load the preset value on display.
• at the ‘Control A/S’ (‘Add’) parameter select ‘on_h’ increase
the counter with impulses received at channel ‘A’ when
channel ‘B’ is active (logical state ‘1’) or select ‘on_0’ to
decrease the counter with impulses received at channel ‘A’
when channel ‘B’ is inactive (logical state ‘0’).
1.13.8 Differential counter ‘cnd.5’ configuration menu
Differential
counter conf.
Multiplier
Multiplier
1 to 999999
Divider
Divider
1 to 999999
Preset
Preset value
-199999 to 999999
Configuration menu for mode ‘differential counter’ (‘cnd.5’).
Total impulses received are multiplied by the value of the
‘multiplier’ (‘MuLt’) parameter and divided by the ‘divider’
(‘dIV’) parameter. Result is shown on the display.
• set the ‘Multiplier’ (‘MuLt’) parameter from 1 to 999999.
• set the ‘Divider’ (‘dIV’) parameter from 1 to 999999.
• set the ‘Preset’ (‘PrSt’) parameter from -199999 to 999999.
Activate the reset to load the preset value on display.
Impulses received on channel ‘A’ add to the counter.
Impulses received on channel ‘B’ subtract from the counter.
13
1.13.9 Ratemeter and periodmeter modes description
The instrument offers 2 selectable ratemeter modes and
1 periodmeter mode. Ratemeters provide a reading
proportional to the frequency measured, while reading at
periodmeters is proportional to the time between impulses
• Standard ratemeter (‘rt.6’) (see section 1.13.10) to read
speed values from impulse frequency signals.
• Quadrature ratemeter (‘rtq.7’) (see section 1.13.11)
to read speed values and the turning sense of the axis,
from two quadrature frequency signals, such as those
provided by a bidirectional encoder. Speed is positive
when the quadrature turns clockwise and negative when
turns counterclockwise.
• Standard periodmeter (‘Prd.8’) (see section 1.13.12)
to read time between impulses. For applications with
long periods (long time between impulses) the ‘SLOW’
mode offers the best possible response time for each
application.
All modes have scalable reading through multiplier (1
to 999999) and divider (1 to 999999) parameters, and a
configurable time window (‘GAtE’) to adjust the measure
refresh time.
1.13.10 Ratemeter ‘rt.6’ configuration menu
Ratemeter
conf.
Multiplier
Multiplier
1 to 999999
Divider
Divider
1 to 999999
Seconds
Time window
Max. waiting time
‘SLOW’ mode
Number of pulses
Average filter
14
Filter strength
(0 = disabled)
• ‘SLOW’ mode
The ‘SLOW’ mode is an optional mode for very slow
applications. Applies to ratemeter and periodmeter modes.
The ‘SLOW’ mode accepts measures frequencies down to
1 mHz (0,001 Hz or 1000 seconds between impulses), and is
functional up to 200 Hz.
The ‘SLOW’ mode offers the fastest response time for any
given application, calculating the frequency and period
values each time a new impulse is received.
At the The ‘Max. waiting time’ parameter set a value
between 1 and 1000 seconds. Select ‘0’ to disable the
‘SLOW’ mode. If time between impulses is higher than the
configured value, the instrument assumes that the signal has
stopped and forces the reading to ‘0’ (both in ratemeters
and periodmeters). The ‘GATE’ parameter has no effect if the
‘SLOW’ mode is active.
At the The ‘Number of pulses’ parameter set a value
between 1 and 32. This paremeter defines the number of
pulses that will be taken to calculate the period.
In ‘Quadrature ratemeter’ (‘rtq.7’) mode, the ‘SLOW’
mode calculates the frequency between two consecutive
impulses received at channel ‘A’, and calculates the turning
direction by comparing impulses at channel ‘A’ with the state of
channel ‘B’. The ‘Quadrature edges’ parameter is fixed to
‘1--1’.
Application: to measure the speed of the propeller on
ships, using two inductive sensors in quadrature, at low
revolutions per minute.
Configuration menu for mode ‘ratemeter’ (‘rt.6’).
Measured frequency is multiplied by the value of the
‘multiplier’ (‘MuLt’) parameter and divided by the
‘divider’ (‘dIV’) parameter. Result is shown on the display. The
measure is updated on display as configured on the ‘GAtE’
parameter.
• set the ‘Multiplier’ (‘MuLt’) parameter from 1 to 999999.
• set the ‘Divider’ (‘dIV’) parameter from 1 to 999999.
• select the ‘Time window’ (‘GAtE’) parameter at 0.5, 1.0, 2.0,
4.0, 8.0 or 16.0 seconds. This parameter defines how often
the measure will be refreshed on display. This parameter
has no effect if ‘SLOW’ mode is active.
• for slow frequencies activate the ‘SLoW’ parameter
configuring the ‘tIME’ parameter between 1 and 1000
seconds. See 1.13.9 for more information. Configure the
‘nuMb’ parameter between 1 and 32 impulses.
• if reading is unstable, set the ‘Average filter’ (‘AVr’)
parameter to ‘on’ to activate a recursive filter on the display,
and configure the filter strength from 0.0 to 99.9. The filter
is stronger for higher values. Strong filters make readings
more stable and changes slower to update. Set ‘0’ to disable
the filter.
1.13.11 Quadrature ratemeter ‘rtq.7’ configuration menu
Quadrature
ratemeter conf.
Multiplier
Multiplier
1 to 999999
Divider
Divider
1 to 999999
Seconds
Time window
1 imp. per cycle
Quadrature
edges
2 imp. per cycle
4 imp. per cycle
Max. waiting time
‘SLOW’ mode
Number of pulses
Average filter
Filter strength
(0 = disabled)
Configuration menu for mode ‘quadrature ratemeter’
(‘rtq.7’). Measured frequency is multiplied by the value
of the ‘multiplier’ (‘MuLt’) parameter and divided by the
‘divider’ (‘dIV’) parameter. Result is shown on the display.
The measure is updated on display as configured on the
‘GAtE’ parameter.
• set the ‘Multiplier’ (‘MuLt’) parameter from 1 to 999999.
• set the ‘Divider’ (‘dIV’) parameter from 1 to 999999.
• select the ‘Time window’ (‘GAtE’) parameter at 0.5, 1.0, 2.0,
4.0, 8.0 or 16.0 seconds. This parameter defines how often
the measure will be refreshed on display. This parameter
has no effect if ‘SLOW’ mode is active.
• at the ‘Quadrature edges’ (‘q.124’) parameter select the
number of edges to consider. Select ‘1--1’ for 1 impulse
per quadrature cycle, ‘1--2’ for 2 impulses per quadrature
cycle, ‘1--4’ for 4 impulses per quadrature cycle.
• for slow frequencies activate the ‘SLoW’ parameter
configuring the ‘tIME’ parameter between 1 and 1000
seconds. See 1.13.9 for more information. Configure the
‘nuMb’ parameter between 1 and 32 impulses.
• if reading is unstable, set the ‘Average filter’ (‘AVr’)
parameter to ‘on’ to activate a recursive filter on the display,
and configure the filter strength from 0.0 to 99.9. The filter is
stronger for higher values. Strong filters make readings more
stable and changes slower to update. Set ‘0’ to disable the
filter.
1.13.12 Periodmeter ‘Prd.8’ configuration menu
Periodmeter
conf.
Multiplier
Multiplier
1 to 999999
Divider
Divider
1 to 999999
Seconds
Time window
Max. waiting time
‘SLOW’ mode
Number of pulses
Average filter
Filter strength
(0 = disabled)
Configuration menu for mode ‘periodmeter’ (‘Prd.8’).
Measured period is multiplied by the value of the ‘multiplier’ (‘MuLt’) parameter and divided by the ‘divider’ (‘dIV’)
parameter. Result is shown on the display. The measure is
updated on display as configured on the ‘GAtE’ parameter.
• set the ‘Multiplier’ (‘MuLt’) parameter from 1 to 999999.
• set the ‘Divider’ (‘dIV’) parameter from 1 to 999999.
• select the ‘Time window’ (‘GAtE’) parameter at 0.5, 1.0, 2.0,
4.0, 8.0 or 16.0 seconds. This parameter defines how often
the measure will be refreshed on display. This parameter
has no effect if ‘SLOW’ mode is active.
• for slow frequencies activate the ‘SLoW’ parameter
configuring the ‘tIME’ parameter between 1 and 1000
seconds. See 1.13.9 for more information. Configure the
‘nuMb’ parameter between 1 and 32 impulses.
• if reading is unstable, set the ‘Average filter’ (‘AVr’)
parameter to ‘on’ to activate a recursive filter on the display,
and configure the filter strength from 0.0 to 99.9. The filter is
stronger for higher values. Strong filters make readings more
stable and changes slower to update. Set ‘0’ to disable the
filter.
15
1.13.13 Accepted sensors and signals
The instrument accepts the usual sensors and impulse
signals, and provides a list for the operator to choose his
sensor. It also allows to configure a wide range of parameters
to adapt the reading to other non usual sensors and signals.
The directly selectable sensors are:
• Mechanical contact (free potential contact)
• Namur
• NPN and PNP, 2 or 3 wires
• Push-pull
• TTL and CMOS
• Pickup
• AC voltage signals up to 30 Vp (inductive)
The configurable parameters are:
• Pull-up / pull-down resistors can be enabled or disabled
independently for channel ‘A’, channel ‘B’ and the reset
channel.
• The trigger level can be manually configured to any value
between 0.0 V and 3.9 V. While modifying the trigger level
parameter, the two segments to the left show the actual
state ‘1’ or ‘0’ for channels ‘A’ and ‘B’. This information
Sensor
Mechanical
contact
Namur
Connections
(0 signal Vexc)
0 V ‘A’
‘A’ Vexc
helps to easily identify the real trigger level. When the
left segments switch from ‘high’ to ‘low’ means that the
trigger level for channels ‘A’ and ‘B’ has been reached. The
same trigger level applies to channels ‘A’, ‘B’ and reset.
• Activation by rising or falling edges can be configured.
Channels ‘A’ and ‘B’ share the same configuration. Reset
has its own independent configuration.
• Excitation voltage can be configured to 5 V, 9 V, 15 V o 18 V,
or even power off the excitation voltage.
• An antirrebound filter is configurable, by setting a time
between 0 and 1000 mSeconds. When an impulse is
received,the instrument inhibits the counting of new
impulses for the time configured.
See Table 15 below for a list of directly selectable sensors,
the associated configuration parameters for each one and
connections. Parameters can be later on modified through
the configuration menu.
For signal connections and reset connections, see section
1.8.
Antirrebound Trigger
filter
level
100 mSeg. 2,5 Vdc
Pulls
Vexc.
pull-up
no
pull-down
9 Vdc
no
3,0 Vdc
NPN 2 wires
0 V ‘A’
pull-up
18 Vdc
no
2,5 Vdc
NPN 3 wires
0 V ‘A’ Vexc
pull-up
18 Vdc
no
2,5 Vdc
PNP 2 wires
0 V ‘A’
pull-down 18 Vdc
no
2,5 Vdc
PNP 3 wires
0 V ‘A’ Vexc
pull-down 18 Vdc
no
2,5 Vdc
Push-pull
0 V ‘A’ Vexc
no
18 Vdc
no
2,5 Vdc
0 V ‘A’
no
5 Vdc
no
2,5 Vdc
0 V ‘A’
no
no
no
0 Vdc
TTL
CMOS
Pick-up
AC<30 Vp
Inductive
Table 15 - Parameters configured and connections for listed sensors. Channel ‘B’ applies the same connections as indicated for channel ‘A’
16
channel ‘A’
channel ‘B’
Level ‘1’
Level ‘0’
‘trigger’ level
‘Trigger Sense’ leds
Vdc
‘Trigger’ level
at 1.8 Vdc
t
‘1’
‘0’
t
Figure 6 - ‘Trigger sense’ for detection of trigger level
1.13.14 Sensor configuration menu
Sensor
Automatic
configuration
Channel A pulls
Channel B pulls
Reset pulls
Trigger level
Channel A
activation
Reset activation
The ‘Sensor’ (‘SnSr’) configuration menu contains all
Mechanical contact parameters related to the detection of the input signal,
excitation voltage and trigger levels.
Namur
• enter the ‘Automatic configuration’ (‘Auto’) menu to
select a standard sensor from the list. The instrument
NPN 2 wires
will configure the appropriate parameters for the sensor
NPN 3 wires
selected, as indicated at Table 15. If the instrument does
not detect the signal with this configuration, the following
PNP 2 wires
parameters can be manually reconfigured.
PNP 3 wires
• a t ‘Channel A pulls’ (‘PuL.A’) select ‘P.uP’ to activate the
internal pull-up resistors needed for NPN sensors, select
Push pull
‘P.dn’ to activate the internal pull-down resistors needed
TTL
for PNP sensors, or select ‘no’ to disable the pull resistors.
Selecting pull-up or pull-down resistors sets the trigger
CMOS
level to 2,5 Vdc.
Pick-up
• a t ‘Channel B pulls’ (‘PuL.b’) applies the same as previous
entry but for channel B.
Inductive
• ‘Reset pulls’ (‘PuL.r’) - applies the same as previous entry
Vac <30 V
but for the reset channel.
• a t ‘Trigger level’ (‘trIG’) configure the trigger level to
No pulls
detect the impulses. Signals levels above the trigger level
are ‘1’ signals, and signal levels below trigger level are
Pull up
‘0’ signals. Trigger level is selectable between 0,0 and
Pull down
3,9 Vdc. Channels ‘A’ and ‘B’ share the same trigger level.
Trigger level for reset channel is fixed at 2.5 Vdc. Vertical leds to the left are part of the ‘trigger sense’ utility to
No pulls
help locate the real trigger level for the actual signal. See
section 1.13.13 for more information.
Pull up
• a t ‘Channel A activation’ (‘Act.A’) configure the
Pull down
activation of channel ‘A’ by rising edge (‘on_h’) or falling
edge (‘on_0’)
No pulls
• a t ‘Reset activation’ (‘Act.r’) configure the activation of
reset by rising edge (‘on_h’) or falling edge (‘on_0’)
Pull up
• a t ‘Excitation voltage’ (‘V.EXc’) configure the value for the
Pull down
excitation voltage to 5 Vdc, 9 Vdc, 15 Vdc or 18 Vdc. Select
‘no’ to disable the excitation voltage.
0.0 Vdc to 3.9 Vdc
• a t ‘Antirrebound’ (‘rbnd’) configure the filter that prevents
mechanical rebounds to be accepted as real impulses.
Configure a value between 0 and 1000 mSeconds. When an
impulse is received,the instrument inhibits the counting of
new impulses for the time configured. When time is over,
rising edge
the next impulse is accepted and the filter activates again.
Recommended value is 100 mSeconds for a mechanical
falling edge
contact.
rising edge
falling edge
Excitation
voltage
0 to 1000 mSec.
Antirrebound
17
1.13.15 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 (alarm active when reading is higher than
setpoint) or minimum (alarm active when reading is
lower than minimum) alarm types (see Figure 7).
Reading
histéresis
• 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 8).
• 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 is 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).
• ‘On alarm’ functions
The ‘on alarm’ functions allow to associate a function
to the alarm activation event. Functions available are
reset to ‘0’, load the preset value, or do nothing.
Functions reset and preset create counting cycles (from
0, then to setpoint, then to 0 again, ...). The number
of cycles performed can be accessed through the fast
access menu (see section 1.13.17).
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 7 - Example for alarm with 2 setpoint
18
Setpoint 2
t
on
off
Reading
t
Setpoint 1
t
on
off
Alarm as minimum, with
double setpoint, no hysteresis, no delays
t
Figure 8 - Example for alarm with 2 setpoints
1.13.16 Alarms configuration menu
Alarms
Alarm 1
Active
Type of alarm
Setpoint
Hysteresis
Activation
delay
Deactivation
delay
Setpoint 2
Inverted relay
Locked alarm
Continue
On alarm
to ‘0’
to preset
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 1.13.17).
• 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 8) 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 1.13.19).
• at the ‘On alarm’ (‘on.AL’) parameter configure the
action to activate when the alarm activates. Select
‘cont’ to do nothing and continue counting, select
‘to_0’ to load a ‘0’ on display, or select ‘to_p’ to load
the preset value on display. Selecting ‘to_0’ or ‘to_p’
configures ‘dEL.1’ to 1 second.
19
1.13.17 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 preset value to read and modify the value.
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.
1.13.18 ‘On power up’ 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 reset of the counter. The
functions will apply only after a restart due to powerloss, 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.
1.13.19 Key ‘LE’
The ‘LE’ (3) key at the front of the instrument can be
configured to activate several functions. Only one function
can be assigned to the ‘LE’ (3) key. Eligible functions are
reset of the counter and the alarm unlock function (see
section 1.13.15).
Example: an impulse counter activates alarm 1 when reading
reaches 153.000. Automatically the instrument activates a
reset, reading goes to ‘0’, and relay 1 is activated to inform
that the required level has been reached. Counter remains
at 0 receives several additional impulses, related to the
system not stopping immediately. When the operator
arrives, reloads the system and presses key ‘LE’ to return the
reading to ‘0’, unlocks the alarm and restarts the system.
20
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.
1.13.20 ‘Fast access’ configuration menu
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 1.13.17.
• the ‘Setpoint 1’ (‘ALr1’) function allows to visualize and modify the alarm 1 setpoint through the ‘fast
access’ menu.
• the ‘Setpoint 2’ (‘ALr2’) function allows to visualize and modify the alarm 2 setpoint through the ‘fast
access’ menu.
• the ‘Setpoint 3’ (‘ALr3’) function allows to visualize and modify the alarm 3 setpoint through the ‘fast
access’ menu.
• the ‘Memory of maximum’ (‘MAX’) or ‘Memory
of minimum’ (‘MIn’) functions allow to visualize the
maximum or minimum reading value stored in memory.
• the ‘Memory of cycles’ (‘cYcL’) function allows to
visualize the number of cycles value stored in memory.
The cycles value increases ‘+1’ with each reset or preset
associated to the alarm activation or resets associated
to ‘overrange’/‘underrange’.
• the ‘Preset value’ (‘PrSt’) function allows to visualize and
modify the preset value through the ‘fast access’ menu.
Tools
Key UP
(‘Fast access’)
Setpoint 1
Setpoint 2
Setpoint 3
Memory of
maximum
Memory of
minimum
Memory of
cycles
Preset value
1.13.21 ‘On power up’ configuration menu
On power-up
Delay
Seconds
Reset
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 1.13.18.
• at the ‘Delay’ (‘dLAy’) parameter configure the time the
instrument will wait before starting normal functionality.
Time between 0 and 200 seconds.
• at the ‘Reset’ (‘rSt’) parameter set to ‘on’ to activate a
reset when restarting after a power loss
1.13.22 ‘Key LE’ configuration menu
No function
Key LE
Front reset
Alarm unlock
Reset and alarm unlock
The ‘LE’ (3) key at the front of the instrument can be
configured to activate several functions. For more
information see section 1.13.19.
• the ‘No function’ (‘nonE’) value assigns no function.
• the ‘Front reset’ (‘F.rSt’) value assigns the reset
function.
• the ‘Alarm unlock’ (‘A.Lck’) value assigns the manual
alarm unlocking, when the ‘Locked alarms’ (‘A.Lck’)
function is active.
• the ‘Reset and alarm unlock’ (‘Fr.AL’) value assigns
both functions at the same key..
21
1.13.23 ‘Overrange / underrange’ function
Counter
overrange
Flash
To zero
To preset
Counter
underrange
Flash
The ‘Counter overrange’ (‘c.orG’) and ‘Counter
underrange’ (‘c.urG’) parameters configure the behavior
of the instrument when reading is higher than ‘999999’
(overrange) or lower than ‘-199999’ (underrange). Select
‘FLSH’ to enter reading into flash mode. Select ‘to_0’ to
apply a reset to ‘0’. Select ‘to_P’ to apply a reset to preset
value.
To zero
To preset
1.13.24 Left zeros function
With left zeros.
Left zeros
The ‘Left zeros’ (‘L.ZEr’) parameter controls the left zeros on
or off.
Without left zeros.
1.13.25 Excitation voltage function
Vexc with error control
Vexc. control
22
Vexc without error control
At the ‘Vexc control’ (‘V.ctr’) parameter select ‘on’ to
activate the ‘Err.8’ message, when consumption
requested to the excitation voltage is higher than the current the
instrument can provide.
1.13.26 ‘Password’ function
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 (setpoint values, preset value, ...) can still be
accessible to the operator through the ‘fast access’ menu.
Password
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’ (<)).
1.13.27 Default factory configuration
At the ‘FActory configuration’ (‘FAct’) menu select ‘yes’ to
activate the default factory configuration. See section 1.15
for a list of default parameters.
Factory
configuration
1.13.28 Firmware version
The ‘Version’ (‘VEr’) menu informs about the firmware
version installed on the instrument.
Version
1.13.29 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
1.13.30 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
23
1.14 Full configuration menu
Press ‘SQ’ (<) for 1 second to access the ‘Configuration menu’.
Counter
Main function
Counter +
inhibition conf.
Quadrature counter
Counter + inhibition
Multiplier
Multiplier
1 to 999999
Divider
Divider
1 to 999999
Preset
Preset value
-199999 to 999999
Counter + control add / subtract
Differential counter
Increasing
Ratemeter
Mode
Quadrature ratemeter
Periodmeter
Inhibition
Counter
configuration
Multiplier
Multiplier
1 to 999999
Divider
Divider
1 to 999999
Preset
Preset value
-199999 to 999999
Multiplier
Divider
Divider
1 to 999999
Preset
Preset value
-199999 to 999999
Control A/S
Increasing
Mode
Decreasing
Differential
counter conf.
‘FAST’ mode
Quadrature
counter conf.
Multiplier
Multiplier
1 to 999999
Divider
Divider
1 to 999999
Preset
Preset value
-199999 to 999999
Ratemeter
conf.
2 imp. per cycle
4 imp. per cycle
24
Adds if channel
‘B’ to high
Subtracts if channel ‘B’ to low
Multiplier
Multiplier
1 to 999999
Divider
Divider
1 to 999999
Preset
Preset value
-199999 to 999999
Multiplier
Multiplier
1 to 999999
Divider
Divider
1 to 999999
1 imp. per cycle
Quadrature
edges
Inhibits if channel
‘B’ to high
Inhibits if channel
‘B’ to low
Multiplier
1 to 999999
Decimal point
Counter + control
add / subtract conf.
Decreasing
Seconds
Time window
Max. waiting time
‘SLOW’ mode
Max. waiting time
‘SLOW’ mode
Number of pulses
Average filter
Quadrature
ratemeter conf.
Number of pulses
Filter strength
(0 = disabled)
Average filter
Multiplier
Multiplier
1 to 999999
Divider
Divider
1 to 999999
Sensor
Automatic
configuration
Filter strength
(0 = disabled)
Mechanical contact
Namur
NPN 2 wires
NPN 3 wires
Seconds
PNP 2 wires
Time window
PNP 3 wires
Push pull
TTL
CMOS
Pick-up
Inductive
1 imp. per cycle
Quadrature
edges
Vac <30V
2 imp. per cycle
4 imp. per cycle
No pulls
Max. waiting time
‘SLOW’ mode
Channel A pulls
Pull down
Number of pulses
Average filter
Filter strength
(0 = disabled)
No pulls
Channel B pulls
Periodmeter
conf.
Pull up
Multiplier
Multiplier
1 to 999999
Divider
Divider
1 to 999999
Seconds
Pull up
Pull down
No pulls
Reset pulls
Time window
Pull up
Pull down
0.0 Vdc to 3.9 Vdc
Trigger level
25
rising edge
Channel A
activation
Reset activation
falling edge
rising edge
falling edge
Tools
Key UP
(‘Fast access’)
Setpoint 1
Setpoint 2
Excitation
voltage
Setpoint 3
Memory of
maximum
Memory of
minimum
0 to 1000 mSec.
Antirrebound
Memory of
cycles
Alarms
Preset value
Alarm 1
Active
On power-up
Type of alarm
Delay
Seconds
Reset
Setpoint
Key LE
Hysteresis
No function
Activation
delay
Front reset
Deactivation
delay
Alarm unlock
Reset and
alarm unlock
Setpoint 2
Inverted relay
Counter
overrange
Locked alarm
Flash
To zero
To preset
Continue
On alarm
to ‘0’
to preset
Counter
underrange
Flash
To zero
To preset
26
1.15 Factory configuration
With left zeros.
Left Zeros
Without left zeros.
Vexc with error control
Vexc. control
Vexc without error control
Password
Factory
configuration
Version
Minimum
Brightness
Standard
Maximum
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
Function
Decimal point
Counter configuration
Multiplier
Divider
Preset
Mode
‘FAST’
Sensor
Pulls on channel A
Pulls on channel B
Pulls on reset
Trigger
Activation for channel A
Excitation voltage
Antirrebound filter
Tools
Fast access (Key UP)
‘On Power Up’
Delay
Key ‘LE’
Memory of maximum
Memory of minimum
Memory of cycles
Counter overrange
Counter underrange
Left zeros
Vexc. control
Password
Brightness
Alarms 1,2 and 3
Active
Type
Setpoint
Hysteresis
Activation delay
Deactivation delay
Setpoint 2
On Alarm
Inverted relay
Locked alarms
counter (‘cn.1’)
no
x1
/1
0
up
off
no pull resistor
no pull resistor
pull-up
2,5 Vdc
on rising edge (‘on_h’)
5 Vdc
0 mSeconds
off
0 seconds
reset function
-199999
999999
0
flash
flash
off
off
off
3
off (disabled)
maximum
1000
0 counts
0.0 seconds
0.0 seconds
off
continue
off
off
Factory configuration for Ratemeter (‘cnF.6) and periodmeter (‘cnF.8) modes.
Multiplier
x1
Divider
/1
Time windows
0.5
‘SLOW’ mode
tIME
0 (off)
nuMb
1
Recursive filter
0 (off)
27
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 11). 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 9). 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 9 - Panel mount
• Hanging mount. Mount the side fixations as shown (see
Figure 10). 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 10 - Hanging mount
28
Fixation screws
Side fixations
Figure 11 - 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.
1.18 Warranty
1.19 CE declaration of conformity
Supplier:
Omega Engineering
Products
LDB-C1
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
Please see the last page for Omega’s warrenty 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.
29
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 a
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.
‘com’ (‘A’)
‘B’
‘NC’ (‘C’)
‘NO’ (‘B’)
‘A’
Figure 12 - 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 into a
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.
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 14 - 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 13 - Connections for ‘R1’ relay output module
30
A
A
B
C
Emitter
Collector
Not connected
Figure 15 - 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 into a
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 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 LDB44 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 a
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.
+15 Vdc ‘C’
Relé SSR
‘B’
Figure 18 - Module ‘AO’
‘A’
Figure 16 - 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 17 - 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 19 - Connections for ‘AO’ analog output module
31
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 a
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 a
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 RS-485 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 20 - Communications module ‘RTU’
Protocol
Bus
Isolation
Terminal
Installation allowed at
Figure 22 - 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 21 - Connections for Modbus ‘RTU’ communications module
32
B wire
Figure 23 - Connections for RS-485 ‘S4’ communications module
2.7 Module S2
The S2 module provides an isolated RS-232 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 a
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 24 - 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 25 - Connections for RS-232 ‘S2’ communications module
33
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
written consent of OMEGA ENGINEERING, INC.
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