SGM LEKTRA RPL75 User manual

RPL75
80GHz Radar level transmitter
technical documentation EN Rev. of 21/03/2023

Page 2 of 40 www.sgm-lektra.com
RPL75 - contents
CONTENTS
1-WARRANTY
2-PRODUCT
3-PERFORMANCE SPECIFICATIONS
4-DIMENSIONS
5-INSTALLATION
6-ELECTRICAL CONNECTIONS
7-CONFIGURATION MODES
8-OPERATOR INTERFACE
9-QUICK SETUP
10-ADVANCED SETUP
11-NOTE
12-FACTORY TEST AND QUALITY CERTIFICATE
page 3
page 4
page 5
page 6
page 7
page 10
page 11
page 14
page 15
page 22
page 38
page 40

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RPL75 - warranty
Products supplied by SGM LEKTRA are guaranteed for a period of 12 (twelve) months from delivery date
according to the conditions specified in our sale conditions document.
SGM LEKTRA can choose to repair or replace the Product.
If the Product is repaired it will maintain the original term of guarantee, whereas if the Product is replaced it will have 12
(twelve) months of guarantee.
The warranty will be null if the Client modifies, repair or uses the Products for other purposes than the normal conditions
foreseen by instructions or Contract.
In no circumstances shall SGM LEKTRA be liable for direct, indirect or consequential or other loss or damage whether
caused by negligence on the part of the company or its employees or otherwise howsoever arising out of defective goods
1-WARRANTY

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RPL75 - product
2- PRODUCT
2.1 IDENTIFICATION
Each meter has an adhesive identifi cation plate on which are indicated the meter main data.
The following picture describes the information on the identifi cation plate.
1. Product code 3. Serial number2. Power supply
1. Anticondensation filter
2. M20 skintop
3. VL601 (opt.)
4. Sensor
RPL751F4D
24Vdc 20÷30Vdc
MU0081604506
2
3
1Mod.
P.S.
S.N.
1
1
2
3
4

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3-FEATURES
RPL75 - features
Housing/sensor material
PC / PP wetted part
Mechanical installation
2” GAS M (Flange in PP DN80 (opt.)
Protection degree
IP67/IP68 (Antenna)
Electrical connection
Internal push connectors
Working temperature
-20 ÷ +60°C
Pressure
Max. 3 bar
Power supply
20÷30Vdc
Power consumption
5W peak; 2,5W average
Analog output
4...20mA, max 750ohm
Relays output
n°2 3A 230Vac (n.o.) with a resistive load
Digital communication
MODBUS RTU
Max measure range
0.05 ÷ 10mt max for solids
0.05 ÷ 20mt max for liquids
In case of non perfectly reflecting surfaces, the maximum distance value will be reduced
Blind distance
0,05m
Accuracy
Measurement deviation ±5mm, for distances less than 250mm ±10mm.
Resolution
2mm.
Calibration
4 buttons or via MODBUS RTU or Bluetooth
LCD Display
Removable programming module VL601 (opt.) display/keyboard 4 buttons matrix LCD

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4-DIMENSIONS
RPL75 - dimensions
5.1 MECHANICAL DIMENSIONS
93
127,5
250
Ø55,5
Ø95
93
127,5
Ø55,5
Ø95
260
2" G
2" G
250
127,5
Ø55,5
PP HOUSING
ALUMINIUM HOUSING
PP HOUSING + EXTENSION

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RPL75 - installation
5-INSTALLATION
5.1 MOUNTING PRECAUTIONS
5.1.1 Mounting position
- Leave a 300mm (d) minimum distance between the sensor and the tank smooth wall.
- Use a protective cover to protect the sensor from weather and direct sunlight (c).
- Do not install the sensor near the load zone (a).
- Make sure that in the sensor emission beam (lobe “ɑ”8°) there are no obstacles (f,e) that can be intercepted as level.
5.1.2 Special European directive
According to EN 302 729, paragraph 4.6.1.3, a minimum distance of 4 km from radio astronomy sites is required,
unless special authorization has been provided by the responsible national regulatory authority.
Also, at the distance between 4 km and 40 km from any radio astronomy site, the height of the LPR antenna should not
exceed 15 m above the ground.

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RPL75 - installation
5.1.4 Installation in nozzle
In case of nozzle installation, make sure the sensor bottom protrudes at least 10mm from the bottom of the nozzle.
ڲУТ((ю
5.1.3 Blind distance
During installation is important to remember that in the sensor proximity there is a blind zone (or BLIND DISTANCE) of
0.05m where the sensor can not measure.
Min. Blind Distance
0.05

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RPL75 - installation
5.1.5 Agitators presence
The level measurement is possible thanks to the Auto-Tuned statistical filter.
Should rarely need to adjust the filter setting by editing 2 RPL75 sensor programming parameters:
- FILTER; this parameter is present in the Quick Setup menu and in the Advanced Configuration “SETUP” menu;
increasing the parameter value, decreases the sensor sensitivity to the level measurement sudden variations.
- F-WINDOW; this parameter is present in the Advanced Configuration “SERVICE” menu; decreasing the parameter
programmed value, increases the sensor immunity to false echoes.

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RPL75 - electrical connections
6-ELECTRICAL CONNECTIONS
No
c
No
c - + A B
RL1 RL2
4÷20mA MUDBUS
ALIM. 24Vdc
6.1 WIRING
1) Separate the engine control cables or power cables from the RPL75 connection cables.
2) Open the cap by unscrewing.
3) Lead the cables into the transmitter through the glands.
4) Do not use sleeves terminals, because they might interfere with the VL601 module insertion.
5) Close the cap and tighten the cable glands.
6.2 HUMIDITY INFILTRATIONS
To avoid the humidity infiltration inside the housing is recommended:
- For electrical connections, use a cable with a 6÷12mm outer diameter and fully tighten the M20 cable gland .
- Fully tighten the cap.
- Position the cable so that it forms a downward curve at the M20 output; in this way the condensation and/or rain
water will tend to drip from the curve bottom

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RPL75 - electrical connections / configuration modes
7.1 DIGITAL COMMUNICATIONS CONNECTION
7.1.1 RPL75 MODBUS RTU PC connection
1) RPL75 with MODBUS RTU communication protocol.
2) USB/RS485 interface module, cod.694A004A.
3) MODBUS RTU communication S/W, cod.010F105A, for RPL75 transmitter.
With this so!ware is possible:
- to connect the RPL75 transmitters in MODBUS RTU network by selecting the UID address.
- to read on your PC monitor all measures in reading and RPL75 operation data.
- to program all RPL75 configuration parameters.
- to store the measurement readings and the operating status of RPL75.
7-CONFIGURATION MODES
The RPL75 have 3 configuration/calibration modes:
- via digital communication: via MODBUS RTU, by PC
- via programming module VL601
- via Bluetooth with Android App
1
2
3
USB/RS485

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MODBUS REGISTERS FOR RPL75
Address
(dec)
Address
(hex)
(N°of
registers)
Type Description Measure
unit
R W Note
0 0 1 unsigned int Distance mm 03h 1 1 1 unsigned int Level mm 03h 2 2 2 float Level % % 03h
6 6 2 float Analog output mA 03h
10 A 1 unsigned int Distance 4mA mm 03h 06h 11 B 1 unsigned int Distance 20mA mm 03h 06h 14 E 1 unsigned int Blind distance mm 03h 06h 22 16 1 unsigned int Filter coefficent 03h 06h
24 18 1 unsigned int UID 03h 06h
37 25 1 unsigned int Delay setpoint RL1 s 03h 06h 39 27 1 unsigned int Delay setpoint RL2 s 03h 06h 42 2A 1 unsigned int Delay pump control RL1 s 03h 06h 43 2B 1 44 2C 1 unsigned int Alarm mode (MAX/MIN) RL1 03h 06h 0:MAX 1:MIN 45 2D 1 unsigned int Safety (NO/YES) RL1 03h 06h 0:Norm_disexcited 1:Norm_excited 46 2E 1 unsigned int Enable RL1 03h 06h 0:disabled 1:enabled 47 2F 1 unsigned int Alarm mode (MAX/MIN) RL2 03h 06h 0:MAX 1:MIN 48 30 1 unsigned int Safety (NO/YES) RL2 03h 06h 0:Norm_disexcited 1:Norm_excited 49 31 1 unsigned int Enable RL2 03h 06h 0:disabled 1:enabled 50 32 1 unsigned int Pump control mode RL1 03h 06h 0:EMPTYING 1:FILLING 51 33 1 unsigned int Enable pump control RL1 03h 06h 0:disabled 1:enabled
52 34 1 unsigned int Enable diagnostic alarm RL2 03h 06h 0:disabled 1:enabled 53 35 1 unsigned int Measurement return power 03h 0…32767 54 36 1

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MODBUS REGISTERS FOR RPL75
Address
(dec)
Address
(hex)
(N°of
registers)
Type Description Measure
unit
R W Note
55 37 1 unsigned int Echo error 03h 56 38 1 57 39 1 unsigned int Distance error 03h
58 3A 1 unsigned int Output alarm status for analog output 03h 06h 4:21.5mA 6:38.5mA 8:HoldLastValue 59 3B 1 unsigned int Relay RL1 status 03h 0: off 1:on
60 3C 1 unsigned int Relay RL2 status 03h 0: off 1:on
65 41 1 unsigned int F_WINDOW value 03h 06h 0: filters disabled 69 45 1 unsigned int Setpoint threshold RL1 (Distance from sensor) mm 03h 06h 70 46 1 unsigned int Setpoint threshold RL2 (Distance from sensor) mm 03h 06h 71 47 1 unsigned int UPPER Setpoint pump RL1 (Distance from sensor) mm 03h 06h
72 48 1 unsigned int LOWER Setpoint pump RL1 (Distance from sensor) mm 03h 06h 73 49 1 unsigned int Modbus RS485 Parity 03h 06h 0:NoParity 1:Even 2:Odd

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8.1 VL••• FEATURES
The VL601 program module has 4 buttons which allow to perform all operational, control and programming instrument
functions. In the configuration menus, is possible:
1. Submenus and parameters access; press to select and press to access.
2. Parameter options choice: Press to select the option and press to store the option.
Press to exit without storing.
3. Configure the parameter values; in some parameters the configuration is done by setting a value
(eg., in the SET DISTANCE 4mA parameter is possible to change the the corresponding distance value, in mm):
press to select the digit to be modified (the digit is highlighted in inverse ), press to change the high
lighted digits number, press to save the set value and exit automatically.
Press to exit without storing.
LEFT ARROW button:
• Exit con!guration
• Back to previous menu
UP ARROW button:
• Parameter values modi!cation
• Parameter scroll
SCROLL button:
• Cursor movement (to the right)
• Parameter scroll
ENTER button:
• Con!guration access
• Options con!rmation
• Parameters values con!rmation
RPL75 - operator interface
8-OPERATOR INTERFACE
Displayed at the bottom indicates the correct echo signal reception
!Displayed at the top alerts that there is a generic error; press SCROLL to show the message that
indicates the present error type.
The RPL75 returns automatically to RUN mode.
QUICK SETUP - Menu with easy access for quick basic parameters configuration.
To access: from “RUN” mode press ENTER to the quick setup menu mode access, LEFT ARROW to exit.
ADVANCED SETUP - Full menu with access to all parameters, including functional parameters.
It is recommended to carefully read the complete documentation before accessing.
To access: from “RUN” mode, holding down UP ARROW, press ENTER to the advanced configuration mode
access, LEFT ARROW to exit

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Set Distance 4
S
Set Distance 20
S
Max Distance
&)1"/,"Ȅ& &"+1Blind Distance
Display
R
R  
R
R  
Set Distance 4
S
0000 
Set Distance 20
S
0000 
&)1"/,"Ȅ& &"+1000
Blind Distance
0000 
R
R   
0000 
R
R   
0000 
Distance
DD
L DD
L 
Output
DO
Para
P  P 
1SS
00000
20
60
Distance

0  
sabled R
R e
0  
sabled R
R e
5SS
Max Distance
00000
RPL75 - quick setup
9-QUICK SETUP
9.1 - Quick Setup menu structure
9.2 - QUICK SETUP MODE
From “RUN” mode press ENTER to access the Quick Setup menu.
Select the parameters by moving the cursor with SCROLL,
and confirm with ENTER; press LEFT ARROW to exit.
4321D
mm
SET DISTANCE 4mA
SET DISTANCE 20mA
MAX DISTANCE
FILTER COEFFICENT
BLIND DISTANCE
DISPLAY
RL1 THRESHOLD
RL2 THRESHOLD
Ź

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RPL75 - quick setup
9.2.1 SET DISTANCE 4mA
Press ENTER to display the distance value associated with 4mA output.
Use SCROLL and UP ARROW to modify that value;
in the example the 4mA distance is 3500mm.
Press ENTER to confirm.
9.2.2 SET DISTANCE 20mA
Press ENTER to display the distance value associated with 20mA output.
Use SCROLL and UP ARROW to modify that value;
in the example the 20mA distance is 500mm.
Press ENTER to confirm.
SET DISTANCE 4mA
SET DISTANCE 20mA
MAX DISTANCE
FILTER COEFFICENT
BLIND DISTANCE
DISPLAY
RL1 THRESHOLD
RL2 THRESHOLD
Ź
3500 mm
SET DISTANCE 4mA
SET DISTANCE 4mA
SET DISTANCE 20mA
MAX DISTANCE
FILTER COEFFICENT
BLIND DISTANCE
DISPLAY
RL1 THRESHOLD
RL2 THRESHOLD
Ź
0500 mm
SET DISTANCE 20mA
100%
0%
20mA distance
4mA distance
Level measurement
RPL75
Reference point

Page 17 of 40
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RPL75 - quick setup
9.2.3 MAX DISTANCE
Press the ENTER key to display the previously set maximum distance value.
The MAX DISTANCE is used to prevent the sensor from detecting an echo signal
at a distance .
Use SCROLL and UP ARROW to modify the value; in the example, the maximum
measurement distance is 3600mm.
The function is disabled with the value set to 00000mm.
To confirm press ENTER.
SET DISTANCE 4mA
SET DISTANCE 20mA
MAX DISTANCE
FILTER COEFFICENT
BLIND DISTANCE
DISPLAY
RL1 THRESHOLD
RL2 THRESHOLD
Ź
00000 mm
MAX DISTANCE
4mA Distance
Max Distance
Reference Point
RPL75

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9.2.4 FILTER COEFFICIENT
Press ENTER.
Use SCROLL and UP ARROW to modify the value.
Input a value from 1 to 99.
1 maximum speed, 99 maximum slowness.
The function is deactivated with 0 (immediate response).
Press ENTER to confirm
Fast resp. 5÷10 Normal resp. 20 Slow resp. 40÷100
RPL75 - quick setup
SET DISTANCE 4mA
SET DISTANCE 20mA
MAX DISTANCE
FILTER COEFFICENT
BLIND DISTANCE
DISPLAY
RL1 THRESHOLD
RL2 THRESHOLD
Ź
20
FILTER COEFFICENT

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9.2.5 BLIND DISTANCE
Press ENTER.
The BLIND ZONE is used to avoid undesired measures near the transmitter.
Use SCROLL and UP ARROW to modify the value.
Press ENTER to confirm.
The minimum value is 0050mm.
9.2.6 DISPLAY
Press ENTER to access the settings change.
With the SCROLL button is possible to select the data to display.
Press ENTER to confirm.
RPL75 - quick setup
SET DISTANCE 4mA
SET DISTANCE 20mA
MAX DISTANCE
FILTER COEFFICENT
BLIND DISTANCE
DISPLAY
RL1 THRESHOLD
RL2 THRESHOLD
Ź
0050 mm
BLIND DISTANCE
SET DISTANCE 4mA
SET DISTANCE 20mA
MAX DISTANCE
FILTER COEFFICENT
BLIND DISTANCE
DISPLAY
RL1 THRESHOLD
RL2 THRESHOLD
Ź
DISTANCE mm
LEVEL mm
LEVEL %
OUTPUT mA
Ź
BLIND ZONE
BLIND
DISTANCE
RPL75
reference point

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9.2.7 RL1 THRESHOLD
Press ENTER to display the previous setting.
Set the distance from the sensor.
Use SCROLL and UP ARROW to modify the value;
in the example the RL1 max. level threshold distance is 700mm.
Press ENTER to confirm.
NB - RL1 inactive with 0000mm
When confirming with the ENTER button the maximum level threshold value storage, in the example 3000mm the PL75
activates RL2 with the following default settings for level alarm threshold:
1) MIN / MAX = MIN; minimum distance alarm.
2) DELAY = 0 sec.; no switching delay.
3) SECURITY = YES; relay de-energized, and contact open, during the maximum level alarm.
4) ENABLE / DISABLE = ENABLE; alarm threshold function enabled.
5) MIN/MAX HYSTERESIS mm = 40mm.
To change these relay setting it is necessary to access the advanced setup menu and any subsequent changes to the
RL1 threshold value will not affect the relay custom settings.
RPL75 - quick setup
ŹŹ
SET DISTANCE 4mA
SET DISTANCE 20mA
MAX DISTANCE
FILTER COEFFICENT
BLIND DISTANCE
DISPLAY
RL1 THRESHOLD
RL2 THRESHOLD
Ź
0700 mm
RL1 THRESHOLD
Level
SET
RL1 “ON”
RL1 “OFF”
RL1 RL1 RL1 RL1
RL1 RL1 RL1 RL1
Max.
Alarm
Max.
Alarm
Max level
allarm zone
700mm.
RPL75
reference point
RL1 THRESHOLD
RL1, MAX LEVEL ALARM
HYSTERESIS