HB HBLC-Fgas User manual

Wire and Flex level sensor manual 04 October 2021 HBproducts.dk 1
Wire and Flex are intelligent liquid level sensors which can be installed in a vessel or in a standpipe. For the Wire sensor the
sensor element is a stainless steel wire insulated with PTFE and for the Flex sensor the element is a stainless steel wire
mounted with steel tube elements to increase the sensivity. Both sensors can to be mounted directly in a stand pipe. If they
need to be installed in a vessel they need an inner pipe. Both sensors measure between the wire/tube elements and the sur-
rounding pipe.
The sensor can be installed in refrigeraon systems and similar demanding applicaons with high pressures and aggressive
uids. The sensor emits a 4-20mA analog signal, which is proporonal to the liquid level.
Introducon
Manual for all exible level sensors and wire sensors delivered be-
fore October 15th 2021
Covers: HBLT & HBSLT
• Wire sensor suited for liquids like NH3, and HFC/HFO refrigerants
• Flex sensor suited for liquids like CO2 and Hydro carbons
Can be used in refrigeraon systems and similar demanding systems.
ATEX/Ex versions included

Wire and Flex level sensor manual 04 October 2021 HBproducts.dk 2
Table of contents
Introducon...............................................................................................1
Safety Instrucons .....................................................................................2
Applicaon Examples..............................................................................3-5
Installaon Wire.........................................................................................6
Installaon Flex..........................................................................................7
Connecon diagrams ............................................................................8-12
Analog output ..........................................................................................12
Use the HB-tool for seng up the sensor ..........................................13-16
LED indicaon ..........................................................................................17
Calibraon on the sensor.........................................................................17
Fault detecon.........................................................................................18
Sensor Repair...........................................................................................18
Further Informaon.................................................................................18
Safety Instrucons
CAUTION! Always read the instrucon manual before commencing work! Heed all warnings to the leer! Installaon of the
sensor requires technical knowledge of both refrigeraon and electronics. Only qualied personnel should work with the
product. The technician must be aware of the consequences of an improperly installed sensor and must be commied to
adhering to the applicable local legislaon.
If changes are made to type-approved equipment, this type approval becomes void. The product's input and output, as well
as its accessories, may only be connected as shown in this guide. HB Products assumes no responsibility for damages re-
sulng from not adhering to the above.
Explanaon of the symbol for safety instrucons. In this guide, the symbol below is used to point out important safety
instrucons for the user. It will always be found in places in the chapters where the informaon is relevant. The safety in-
strucons and the warnings in parcular, must always be read and adhered to.
Intended use, condions of use. The level sensor is designed
for connuous measurement of liquids, but please note the
sensor design and setup has to comply with the liquid. The
table show how sensors comply to liquids. It can be used in
refrigeraon systems and similar environments. If the sensor
is to be used in a dierent way and if the operaon of the
product in this funcon is determined to be problemac,
prior approval must be obtained from HB Products.
Prevenon of collateral damage Make sure that qualied
personnel assess any errors and take necessary precauons
before aempng to make replacements or repairs, to avoid
collateral damage.
Disposal instrucons: The sensor is constructed so that the
modules can easily be removed and sorted for disposal.
CAUTION! Refers to a possible limitaon of funconality or risk in usage.
NOTE! Contains important informaon about the product and provides further ps.
The person responsible for operaon must commit to adhering to all the legislave requirements,
prevenng accidents, and doing everything to avoid damage to people and materials.
Comply
Not comply

Wire and Flex level sensor manual 04 October 2021 HBproducts.dk 3
Standpipe should be insula-
ted to avoid boiling in stand-
Drainpipe most be placed at
an angle of 5-10°, to avoid oil
pockets in standpipe.
Sensor must have a minimum
of 50 mm between the sen-
sor weight end and the
boom of the pipe.
The following applies to the design of the system:
• It must be installed in a vercal posion
• Sensor must have a minimum of 50 mm between the sensor weight end and the boom of the pipe.
• The sensor must be installed in an overow or standpipe where the ow stream and turbulence are minimized.
• The sensor must be mounted in a standpipe bigger than DN25. Standpipe must be insulated to avoid boiling of refrig-
erant.
• The outlet pipe from standpipe shall be mounted in an angle of 5-10 degree from horizontal to secure drainage and oil
pockets in refrigeraon systems.
• The sensor is installed and is supplied with a standard non-shielded cable.
If EMC is greater than described in EN 61326, a shielded cable must be used.
The wire sensor is designed for level measurement of liquids in vessels like,
tanks, pump separators and receivers . The sensor can be mounted in a
standpipe from 1” (25mm) up to 4” (100mm) diameter or directly in a vessel
with an inner pipe from 1” (25mm) up to 4” (100mm) diameter. The inner
pipe is needed to create sucient measuring signal and to avoid a swinging
wire in a lively uid. To reduce wire movements in larger pipes a special
weight can be used.
Installaon Instrucons—wire sensor
Special weight for mounng in turbulent
condions. The steel spacer “star” can be
shortened, using a simple n cung shear,
to t the standpipe. Allow 2 mm play be-
tween inner pipe diameter and “star” di-
ameter

Wire and Flex level sensor manual 04 October 2021 HBproducts.dk 4
Stand pipe: DN32..…DN65.
Recommended pipe standard: DIN 10220
Recommended bending: DIN 2615-1/Type 3
Recommended TEE: DIN 2615-1
Standpipe: DN65…DN100.
Recommended pipe standard: DIN 10220
Recommended bending: DIN 2615-1/Type 3
Site pipe can be designed in smaller pipe e.g. o.5 x DN.

Wire and Flex level sensor manual 04 October 2021 HBproducts.dk 5
Standpipe should be insula-
ted to avoid boiling in stand-
Drainpipe most be placed at
an angle of 5-10°, to avoid oil
pockets in standpipe.
Sensor must have a minimum
of 50 mm between the sen-
sor weight end and the
boom of the pipe.
The following applies to the design of the system:
• It must be installed in a vercal posion
• Sensor must have a minimum of 50 mm between the sensor weight end and the boom of the pipe.
• The sensor must be installed in an overow or standpipe where the ow stream and turbulence are minimized.
• The sensor must be mounted in a standpipe DN25 orDN32. The standpipe must be insulated to avoid boiling of refrig-
erant.
• The outlet pipe from standpipe shall be mounted in an angle of 5-10 degree from horizontal to secure drainage and oil
pockets in refrigeraon systems.
• The sensor is supplied and can be is installed with a standard non-shielded cable.
If EMC is greater than described in EN 61326, a shielded cable must be used.
The Flex sensor is designed for level measurement of liquids in
vessels like, tanks, pump separators and receivers . The sensor
can be mounted in a standpipe 1” (25mm) or 1 ¼” (32mm) diam-
eter or directly in a vessel with an inner pipe 1” (25mm) or 1
¼” (32mm) diameter. The inner pipe is needed to create su-
cient measuring signal and to avoid a swinging wire in a lively
uid.
Installaon Instrucons—Flex sensor

Wire and Flex level sensor manual 04 October 2021 HBproducts.dk 6
Wire adjustment—Wire sensor
The sensor is installed in the standpipe or directly in the tank. The sensor length is determined by standpipe length or tank
height. Cut the insulated steel wire to desired length with a wire cuers or bolt cuer in the end where the weight is in-
stalled. The weight is xed by the 2 screws. Liquid sealant is applied to the thread.
When sealing the conical thread, you must use liquid conducve sealant, which creates
a ground connecon between the standpipe/tank and the sensor, since the sensor uses
the standpipe/tank as reference. If Teon is used, it must only be used on part of the
thread so that the ground connecon is established. If you are in doubt regarding the
ground connecon, measuring the resistance between the tank and sensor is recom-
mended. This should be approx. 0 ohms.
An aluminum sealing/washer has been included for the sensor with cylindrical thread.
To install HBLT-wire, you must use a 2.5
mm Allen key, shiing spanner, and
gasket, depending on the type of
thread.
Separate the electronic part from the
mechanical part
Remove the insulaon 18 +/-2 mm
Dene the required length of sensor
from standpipe. Shorten the wire with
wire cuer.
Make sure that wire is in boom of
the hole.
Tighten the 2 set screws to x the wi-
re.Turn the top cover plasc part on
the metal part (right-hand thread)
L = Programmable sensor length
L= Wire length + 86 mm
Allow for 50 mm clearance below
the weight to the boom of the
tank—if relevant.
18

Wire and Flex level sensor manual 04 October 2021 HBproducts.dk 7
Installaon instrucon—Flex sensor
The sensor can be shortened to t the standpipe length or vessel height. The sensor consist of a 5 mm steel wire ed with
a stainless steel weight at the boom, plasc spacers and aluminum pipes. The purpose of the plasc spacers is to keep the
metal parts away from the pipe and the aluminum pipe increase the sensivity of the sensor.
The sensor length can be reduced to desired
length by reducing the wire length and removing
the aluminum pipes and spacers. Shorten the wire
by using a heavy wire cuer or bolt cuer in the
end where the weight is installed.
Allow for the wire to be inserted 25 mm into the
weight and a 50 mm clearance below the weight
to the boom of the vessel. You can have up to 50
mm free wire at the top or shorten one of the
aluminum pieces to get to the desired length.
When sealing the conical thread, you must use liquid conducve sealant, which cre-
ates a ground connecon between the standpipe/tank and the sensor, since the sen-
sor uses the standpipe/tank as reference. If Teon is used, it must only be used on
part of the thread so that the ground connecon is established. If you are in doubt
regarding the ground connecon, measuring the resistance between the tank and
sensor is recommended. This should be approx. 0 ohms.
An aluminum sealing/washer has been included for the sensor with cylindrical thread.
The sensor with all elements removed from the wire. To shorten HBSLT/HBLT-Flex, you only need
to remove the necessary elements. A large wire cuer is needed for the wire.

Wire and Flex level sensor manual 04 October 2021 HBproducts.dk 8
+24V DC or AC
- Common
DO, Alarm output
AO, 4-20 mA level
Communicaon only
1
5
4
3
2
PLC
+
-
DI
AI
DO
Connecon diagram for sensors without control
cable. With and without temperature compensa-
on
Suited for
• HBLT and HBLT-wire & Flex
• HBLC
How to connect the sensor
Two dierent type of sensors
• A pure sensor version with 4-20 mA output
• A controller version with both cable for direct valve control and analog output
All sensors can provide a signal for a PLC via the M12 connection. The M12 connection is also used for power supply.
Some versions are able to control a valve directly. They have a cable, which can be connected directly to the valve.
PLC
Controller and
sensor version
HBSLT
HBSLC
PLC (oponal)
or
Power supply
Sensor only version
• HBLT
• HBLC
Digital output on pin 3
The sensor versions without a cable has an alarm out-
put on pin 3. Remote setpoint is not available

Wire and Flex level sensor manual 04 October 2021 HBproducts.dk 9
+24V DC or AC
- Common
AI Remote set point 4-20 mA
AO, 4-20 mA level
Run in signal
1
5
4
3
2
PLC
+
-
AO
AI
DO
Color coding
A+ = yellow(2)
A- = white (4)
B- = green (1)
B+= brown (3)
The sensor has a build in controller for a stepper valve. The sensor pro-
vides both the analog output via the cable to control the valve. The lev-
el measurement signal for the PLC comes via the M12 plug .
On pin 3 it is possible to send an analog 4-20 mA signal to the controller
and change the setpoint. The signal is scaled linear like analog output.
The cable is connected according to the drawing and the parameters
are set as shown in the next secon.
For the stepper motor setup a
special menu is acvated
Connecon diagram for sensors with control ca-
ble for all common stepper motor valves — here
shown with Carel E2V
Suited for
• HBSLT/S and HBSLT–wire & Flex/S
• HBSLC/S

Wire and Flex level sensor manual 04 October 2021 HBproducts.dk 10
+24V DC or AC
- Common
AI Remote set point 4-20 mA
AO, 4-20 mA level
Run in signal
1
5
4
3
2
PLC
+
-
AO
AI
DO
Connecon diagram for sensors with control ca-
ble for pulse modulang valve — here shown
with Danfoss AKV/AKVA
The sensor has a build in controller for a pulse modulang valve. The
sensor provides both the analog output via the cable to control the
valve. The level measurement signal for the PLC comes via the M12
plug .
On pin 3 it is possible to send an analog 4-20 mA signal to the controller
and change the setpoint. The signal is scaled linear like analog output.
The cable is connected according to the drawing and the parameters
are set as shown in the next secon.
Suited for
• HBSLT/PWM and HBSLT–wire & Flex/
PWM
• HBSLC/PWM
Wiring using cable
Brown: + when using DC
White: - common when using DC
The cable can supply AC as well

Wire and Flex level sensor manual 04 October 2021 HBproducts.dk 11
+24V DC or AC
- Common
AI Remote set point 4-20 mA
AO, 4-20 mA level
Run in signal
1
5
4
3
2
PLC
+
-
AO
AI
DO
Connecon diagram for sensors with control ca-
ble for modulang valve — here shown with Sie-
mens MVS661
The sensor has a build in controller for a pulse modulang valve. The
sensor provides both the analog output via the cable to control the
valve. The level measurement signal for the PLC comes via the M12
plug .
On pin 3 it is possible to send an analog 4-20 mA signal to the controller
and change the setpoint. The signal is scaled linear like analog output.
The cable is connected according to the drawing and the parameters
are set as shown in the next secon.
Suited for
• HBSLT/C and HBSLT–wire & Flex/C
• HBLC/C
AO = Grey , 4-20 mA
Motor valve: 4-20 mA 24 V DC, max 24 W
3 wire connecon
-common
+ supply
mA input
mA output posion
Open/Close valve
G0
G
Y
M
U
ZC
+ = Brown Supply
- = White common
Manual open/close
Close Open
MVS661 motor valve

Wire and Flex level sensor manual 04 October 2021 HBproducts.dk 12
The sensor with ATEX approval use a two wire connecon.
This means only two pins in the M12 connector are acve
and the output is a 4-20 mA analog signal.
Barrier
+24V DC
Not used
Not used
AO, 4-20 mA level
Not used
1
5
4
3
2
PLC
+
AI
AO
AI
DO
Connecon diagram for sensors without control
cable. With and without temperature compensa-
on
Suited for
• HBLT and HBLT-wire & Flex
• HBLC
Scaling and oseng the output
Scaling the analog output
The output is scaled linear from minimum to maxi-
mum and it is done in the HB-tool.
Oseng minimum and maximum
If your sensor height doesn’t match your vessel height
it is possible move the minimum level and maximum
level beyond the physical sensor by adjusng the o-
set value in the HB-tool. It is also possible to make the
oset by making a calibraons to known levels also in
the tool.
Analog output
mA
Level
Maximum level
4
20
Minimum level

Wire and Flex level sensor manual 04 October 2021 HBproducts.dk 13
Setup — level or control
The sensor can operate in two dierent modes
• As sensor input to a PLC, computer or other device that
uses the analog sensor signal
• A direct controller of an electrically controlled expansion
valve version with a cable output that can be set up as a
controller
Select Control/Level to select the mode
Seng up the sensor
The HB tool has three pages of sengs. Some elds
will be shown in grey when they are not relevant/
acve with the seng chosen. Detailed
explanaons of the individual elds will
show up when the mouse is moved
over the eld. Only the latest version
of the tool has this feature.
When you like to change a seng ,you
just type in a new value or select in the
drop down. Aer changing the value
you store the data by clicking “save to
sensor”. The data is then saved and
stored in the sensor and remains there
even when the power supply is discon-
nected.
Use the HB tool for seng up the sensor
Connecng the sensor
All sensor are connected to a PC using an USB/M12 cable
Setup using a splier box
When using a splier box it is possible to run the refrigeraon system
and connect a PC to the sensor at the same me. The splier box is
not suited for normal operaon, but only for installaon and modi-
caon. The splier box is connected to the M12 plug on the HBX sen-
sor and then both the pc and the normal M12 plug can be connected. The USB cable and the splier box

Wire and Flex level sensor manual 04 October 2021 HBproducts.dk 14
Basic sengs
Here you make the primary sengs of the sensor
Here you set the parame-
ters for the control func-
on.
When “Run in signal” is
set to o the sensor con-
trol connuously when set
to on, control only when
signal is applied on pin5
Here you set the alarm
level. This is only for
versions without cable
for valve control
Here you set the pa-
rameters for the sen-
sor
Filter me averages
the output over a peri-
od and reduce uctua-
ons
Here you can adjust
minimum and maxi-
mum
Zero & span. When o
is selected the “R”
buon can’t be used
Select remote setpoint
if you use that.
Setpoint level in % (control mode only) Desired level: Shows the percentage level that one wants to remain in the container or
the level indicator.
P-band in % (control mode only) Proporonal band: Control area that describes how much the valve should open, dependent
upon the deviaon from the desired level. If proporonal band is set to 10%, for example, a liquid level that is under 5% will
make the valve open 50%; the valve will open to 100% if the level is under 10%. Small proporonal band results in a system
which reacts quickly, while a large proporonal band results in a system that reacts more slowly.
Filter me const. in sec. Filter funcon: Averages the measurement so that the control funcon is performed based on an av-
erage measurement in a programmable me span (in seconds). This is increased if there are brief uctuaons in the measure-
ment which lead to unstable control.
Run in signal remote acvaon: with this funcon it is possible to acvate centralized control. If one does not want this, the
funcon must be set to OFF, otherwise the sensor's control funcon will not work (power LED will ash when run-in signal is
acve or if this funcon is deacvated).
Zero & span cal. Funcon Calibrang funcon: ON in case calibraon of the sensor is allowed. Aer start-up and possibly the
rst calibraon, the tool can be connected and is deacvated.
Alarm seng in % Alarm, H/L: Indicates the desired alarm level. It is given in % of max measurement range.
Alarm delay in sec Delay – alarm: The delay from when the liquid level falls/rises to under/over the selected alarm, indicated in
seconds.
Oset max/min level in mm. here you can adjust for a sensor smaller than the vessel at max level and min level
Select mechanical type: select the type of sensor you have
Refrigerant: Indicates the type of refrigerant the sensor shall measure on.
Measurement length in mm Measurement in mm: Indicates the length of the sensor in mm typically printed on the electrical
part

Wire and Flex level sensor manual 04 October 2021 HBproducts.dk 15
Here you set the parame-
ters for the alarm func-
on.
Only available for sensors
without cable
Here you can adjust
parameters for the
valve control
Advanced sengs
Here you make the advanced sengs of the sensor
Alarm relay funcon: Here, the relay funcon is indicated, depending upon
the instrucons – NO or NC (normally open/normally closed). Here the signal
can be changed from alarm on below or above the alarm setpoint
Output direcon: Here you select either LP-mode (low pressure control) or HP
-mode (high pressure control). In LP-mode, the container is lled so that the
level is maintained, and in HP-mode the container is emped so that the level
is maintained. LP-mode = 4-20 mA. HP-mode = 20-4 mA.
Set mA or digital 2 output Select the sensor output digital or analog
Digital 2 alarm in %: set the alarm setpoint
Digital Hysteresis in %: %: Indicates the deviaon required before the alarm is
deacvated, following acvaon of the alarm. Alarm hysteresis in percent of
the probes calibrated span 0 and 100%.
Alarm seng is as well in % of the probes calibrated span 0 and 100%.
E.g. alarm seng = 80%, Alarm hysteresis = 25%
Set LED indicaon: Determines the funcon LED lighng has.

Wire and Flex level sensor manual 04 October 2021 HBproducts.dk 16
Here you can see and change the zero
calibraon.
The value is normally calculated based
on an automac calibraon and should
not be changed
Here you can see
the actual meas-
urement value
Visualizaon of the
control signal and the
level
Here you can see and change the SPAN
which is a part of the calibraon
The value is normally calculated based
on an automac calibraon and should
not be changed
Use this buon to
make the zero
calibraon
Use the buon and the eld to
make a calibraon to a known level
between 1 and 100%
Diagnosc (calibraon of sensor)
Here you make the calibraon of the sensor. If the sensor is operang in one of the predened liquid it is delivered with a
calibraon and does normally not need further calibraon. If you need higher accuracy the sensor can be calibrated

Wire and Flex level sensor manual 04 October 2021 HBproducts.dk 17
LED indicaon
• Green LED indicates 24 V DC supply; it ashes during operaon. If "run-in" is not used, this funcon must
be deacvated in the tool.
• Yellow LED indicates control.
The ashing sequence indicates if the valve is closing or opening.
• Red LED indicates high- or low-level alarm, depending upon the set-
up.
3-digit display: (not available on /S stepper motor control version.)
Showing 0…100 % linearly corresponding to 4…20 mA.
Calibraon on the sensor
Calibraon instrucons:
0% or 100% for calibraon can be carried out independent of each other. We recommend only calibrang at 0% if a high
degree of accuracy is desired.
Note: To use this funcon the “Zero & span cal. Funcon “ eld found under basic sengs have to be on - default is o
Instrucon for 0% calibraon:
• Connect the supply cable
• Empty the vessel
• Acvate "R" for 5 seconds to acvate calibraon mode = Yellow LED is on (ON) during the 5 second acvaon and
turns o (OFF) when calibraon mode is acvated.
• Acvate "R" once = Yellow LED ash once. Aerwards, the green LED ashes to conrm calibraon.
Instrucon for 100% calibraon:
• Fill the vessel to 100%.
• Acvate "R" for 5 seconds to acvate calibraon mode = Yellow LED is on (ON) during the 5 second acvaon and
turns o (OFF) when calibraon mode is acvated.
• Follow the instrucons under "Conguraons Instrucons" regarding the installaon of drivers in the program.
• Acvate "R" twice = Yellow LED ashes twice. Aerwards, the green LED ashes to conrm calibraon.
LED Signal ON/OFF/Frequency Funconality
Green ON Supply voltage connected
Flash Run In start signal / in operaon.
OFF No supply voltage
Yellow ON Acvaon of valve control / and during calibraon
OFF Valve control not acve
Red ON Alarm, high or low level, depending upon the setup.
Flash slow No contact to sensor probe or sensor probe shorted
Flash fast USB cable connected and communicaon acve
OFF No alarm
Yellow + Red Flash Insucient Power supply
All Flash USB cable connected and communicaon acve
OFF No alarm

Wire and Flex level sensor manual 04 October 2021 HBproducts.dk 18
Sensor Repair
In case of faults with the sensor, it will typically only be necessary to replace the electronics.
Please contact your local distributor about how to handle complaints.
Further Informaon
For further informaon, please visit our website, www.hbproducts.dk, or send an email to: supp[email protected].
HB Products A/S – Bøgekildevej 21 – DK8361 Hasselager – supp[email protected] – www.hbproducts.dk
Fault detecon
General: In case of fault, it is normally enough to replace the electronic part.
NOTE! Fault detecon and/or changing the electronic funcon can be carried out without releasing
pressure from the system or disassembling the mechanical part of the sensor.
Fault Reason Correcon of fault
No LED is on / not operang. No supply to the sensor or defecve
cable/plug
Check and nd faults in the power
supply, or replace the supply cable.
Yellow and red LED ash. Power supply is not sucient. Install proper power supply.
Valve open and close to fast. Refrigerant is boiling in the stand-
pipe
Increase “lter” sengs and eventu-
ally increase P-band as well.
No contact acvaon There may be dirt between the elec-
tronic housing and the mechanical
housing.
Separate the two parts and clean the
spring p. Remember to apply sili-
cone grease to the spring p so as to
avoid problems with moisture
Delay in sensor acvaon May be caused by gas and bubbles
in the system.
Check if the sensor is placed opmal-
ly so that gas is avoided.
The valve is not performing the
control funcon well enough.
Oil has accumulated in the level indi-
cator glass which cannot escape.
Drain the level indicator of oil and, if
necessary, clean the oil from the rod.
There is no alignment between the
output signal and the level in the
level indicator.
The sensor is incorrectly calibrated. Perform calibraon.

Wire and Flex level sensor manual 04 October 2021 HBproducts.dk 19

Wire and Flex level sensor manual 04 October 2021 HBproducts.dk 20
Quick guide
Installaon
The sensor is installed in the vessel using liquid sealant or PTFE tape like shown in the manual and the electrical unit is
connected. If the electronic unit has the threaded union, make sure it is rmly ghtened to secure good electrical con-
necon.
Setup
The sensor is delivered pre-calibrated for the liquid you specied when ordering and ready for use. To obtain a more
accurate measurement you need to calibrate the sensor as described in the complete manual. You need a computer
and a USB/M12 cable to do the calibraon and more advanced setup. The setup is done in the HB-tool which is down-
loaded from the HBproduct web page www.hbproducts.dk
Measurement signal
The sensor output is a 4-20mA provided on pin 4 in the M12 plug. The signal grow linear to the level. More advanced
wiring and wiring of sensors controlling a valve is described in the complete manual.
+24V DC or AC
- Common
AO, 4-20 mA level
1
4
2
LED Signal ON/OFF/Frequency Funconality
Green ON Supply voltage connected
Flash Run In start signal / in operaon.
OFF No supply voltage
LED indicaon
When the sensor is operang the green LED should the green LED should be on or ashing