Vega VEGASWING 66 User manual

Operating Instructions
Vibrating level switch for liquids under
extreme process temperatures and
pressures
VEGASWING 66
- two-wire
Document ID: 43758

2
Contents
VEGASWING 66 • - two-wire
43758-EN-151111
Contents
1 About this document
1.1 Function ........................................................................................................................... 4
1.2 Target group ..................................................................................................................... 4
1.3 Symbols used................................................................................................................... 4
2 For your safety
2.1 Authorised personnel ....................................................................................................... 5
2.2 Appropriate use................................................................................................................ 5
2.3 Warning about incorrect use............................................................................................. 5
2.4 General safety instructions............................................................................................... 5
2.5 Safety label on the instrument .......................................................................................... 6
2.6 CE conformity................................................................................................................... 6
2.7 Safety instructions for Ex areas ........................................................................................ 6
2.8 Environmental instructions ............................................................................................... 6
3 Product description
3.1 Conguration.................................................................................................................... 7
3.2 Principle of operation........................................................................................................ 9
3.3 Operation ......................................................................................................................... 9
3.4 Storage and transport..................................................................................................... 10
3.5 Accessories.................................................................................................................... 10
4 Mounting
4.1 General instructions ....................................................................................................... 12
4.2 Mounting instructions ..................................................................................................... 14
5 Connecting to power supply
5.1 Preparing the connection ............................................................................................... 18
5.2 Connection procedure.................................................................................................... 18
5.3 Wiring plan, single chamber housing.............................................................................. 19
6 Setup
6.1 General information........................................................................................................ 22
6.2 Adjustment elements...................................................................................................... 23
6.3 Function chart ................................................................................................................ 24
6.4 Proof test (WHG, SIL)..................................................................................................... 25
7 Maintenanceandfaultrectication
7.1 Maintenance .................................................................................................................. 32
7.2 Rectify faults................................................................................................................... 32
7.3 Exchanging the electronics ............................................................................................ 33
7.4 How to proceed if a repair is necessary.......................................................................... 33
8 Dismount
8.1 Dismounting steps.......................................................................................................... 34
8.2 Disposal ......................................................................................................................... 34
9 Supplement
9.1 Technical data ................................................................................................................ 35
9.2 Dimensions .................................................................................................................... 41

3
Contents
VEGASWING 66 • - two-wire
43758-EN-151111
Safety instructions for Ex areas
TakenoteoftheExspecicsafetyinstructionsforExapplications.
These instructions are attached as documents to each instrument
with Ex approval and are part of the operating instructions manual.
Editing status: 2015-11-10

4
1 About this document
VEGASWING 66 • - two-wire
43758-EN-151111
1 About this document
1.1 Function
This operating instructions manual provides all the information you
need for mounting, connection and setup as well as important instruc-
tionsformaintenanceandfaultrectication.Pleasereadthisinforma-
tion before putting the instrument into operation and keep this manual
accessible in the immediate vicinity of the device.
1.2 Target group
This operating instructions manual is directed to trained specialist
personnel.The contents of this manual should be made available to
these personnel and put into practice by them.
1.3 Symbols used
Information, tip, note
This symbol indicates helpful additional information.
Caution: If this warning is ignored, faults or malfunctions can result.
Warning: If this warning is ignored, injury to persons and/or serious
damage to the instrument can result.
Danger: If this warning is ignored, serious injury to persons and/or
destruction of the instrument can result.
Ex applications
This symbol indicates special instructions for Ex applications.
SIL applications
This symbol indicates instructions for functional safety which must be
taken into account particularly for safety-relevant applications.
• List
The dot set in front indicates a list with no implied sequence.
→ Action
This arrow indicates a single action.
1 Sequence of actions
Numbers set in front indicate successive steps in a procedure.
Battery disposal
This symbol indicates special information about the disposal of bat-
teries and accumulators.

5
2 For your safety
VEGASWING 66 • - two-wire
43758-EN-151111
2 For your safety
2.1 Authorised personnel
All operations described in this operating instructions manual must
be carried out only by trained specialist personnel authorised by the
plant operator.
During work on and with the device the required personal protective
equipment must always be worn.
2.2 Appropriate use
The VEGASWING 66 is a sensor for point level detection.
Youcannddetailedinformationabouttheareaofapplicationin
chapter "Product description".
Operational reliability is ensured only if the instrument is properly
usedaccordingtothespecicationsintheoperatinginstructions
manual as well as possible supplementary instructions.
For safety and warranty reasons, any invasive work on the device
beyond that described in the operating instructions manual may be
carried out only by personnel authorised by the manufacturer. Arbi-
traryconversionsormodicationsareexplicitlyforbidden.
2.3 Warning about incorrect use
Inappropriate or incorrect use of the instrument can give rise to
application-specichazards,e.g.vesseloverllordamagetosystem
components through incorrect mounting or adjustment.
2.4 General safety instructions
This is a state-of-the-art instrument complying with all prevailing
regulations and guidelines. The instrument must only be operated in a
technicallyawlessandreliablecondition.Theoperatorisresponsible
for the trouble-free operation of the instrument.
During the entire duration of use, the user is obliged to determine the
compliance of the necessary occupational safety measures with the
current valid rules and regulations and also take note of new regula-
tions.
The safety instructions in this operating instructions manual, the na-
tional installation standards as well as the valid safety regulations and
accident prevention rules must be observed by the user.
For safety and warranty reasons, any invasive work on the device
beyond that described in the operating instructions manual may be
carried out only by personnel authorised by the manufacturer. Arbi-
traryconversionsormodicationsareexplicitlyforbidden.
The safety approval markings and safety tips on the device must also
be observed.

6
2 For your safety
VEGASWING 66 • - two-wire
43758-EN-151111
2.5 Safety label on the instrument
The safety approval markings and safety tips on the device must be
observed.
2.6 CE conformity
ThisdevicefulllsthelegalrequirementsoftheapplicableECguide-
lines.ByattachingtheCEmark,VEGAprovidesaconrmationof
successfultesting.YoucanndtheCEconformitydeclarationinthe
download area of "www.vega.com".
2.7 Safety instructions for Ex areas
PleasenotetheEx-specicsafetyinformationforinstallationandop-
eration in Ex areas. These safety instructions are part of the operating
instructions manual and come with the Ex-approved instruments.
2.8 Environmental instructions
Protection of the environment is one of our most important duties.
That is why we have introduced an environment management system
with the goal of continuously improving company environmental pro-
tection.Theenvironmentmanagementsystemiscertiedaccording
to DIN EN ISO 14001.
Pleasehelpusfulllthisobligationbyobservingtheenvironmental
instructions in this manual:
• Chapter "Packaging, transport and storage"
• Chapter "Disposal"

7
3 Product description
VEGASWING 66 • - two-wire
43758-EN-151111
3 Product description
3.1 Conguration
The scope of delivery encompasses:
• VEGASWING 66 point level switch
• Documentation
– This operating instructions manual
– Supplementary instructions manual "Plug connector for level
sensors" (optional)
– Ex-specic"Safety instructions" (with Ex versions)
– Ifnecessary,furthercerticates
The VEGASWING 66 consists of the components:
• Housing lid
• Housing with electronics
• Processttingwithtuningfork
1
2
3
4
Fig. 1: VEGASWING 66 - compact version with plastic housing
1 Housing lid
2 Housing with electronics
3 Temperature adapter
4 Processtting
Scope of delivery
Constituent parts

8
3 Product description
VEGASWING 66 • - two-wire
43758-EN-151111
1
2
3
4
5
Fig. 2: VEGASWING 66 with plastic housing and tube extension
1 Housing lid
2 Housing with electronics
3 Temperature adapter
4 Processtting
5 Tube extension
Thetypelabelcontainsthemostimportantdataforidenticationand
use of the instrument:
• Article number
• Serial number
• Technical data
• Article numbers, documentation
With the serial number, you can access the delivery data of the instru-
ment via www.vega.com, "VEGA Tools" and "serial number search".
Youcanndtheserialnumberontheinsideoftheinstrumentaswell
as on the type label on the outside.
Type label

9
3 Product description
VEGASWING 66 • - two-wire
43758-EN-151111
3.2 Principle of operation
VEGASWING 66 is a point level sensor with tuning fork for point level
detection.
It is designed for industrial use in all areas of process technology and
can be used in liquids. It is particularly suitable for applications with
high temperatures up to 450 °C (842 °F) and high process pressure
up to 160 bar (2320 psig).
Typicalapplicationsareoverllanddryrunprotection.Thesmall
tuning fork allows use in pipelines, containers and tanks of all kinds.
Thanks to its simple and rugged measuring system, VEGASWING 66
isvirtuallyunaectedbythechemicalandphysicalpropertiesofthe
liquid.
Itfunctionsevenunderdicultconditionssuchasturbulence,foam
generation, buildup, strong external vibration or changing products.
Function monitoring
The electronics module of VEGASWING 66 continuously monitors the
following criteria via frequency evaluation:
• Strong corrosion or damage on the tuning fork
• Loss of vibration
• Break in the vibration drive circuit
If one of these faults is detected, the electronics signals it via a
denedcurrenttothesignalconditioninginstrument.Theconnection
cable to the sensor is also monitored for line break and short-circuit.
The tuning fork vibrates at its mechanical resonance frequency of
approx.1400Hz.Whenthetuningforkissubmergedintheproduct,
the frequency changes. This change is detected by the integrated
electronics module, passed on to the processing system as a current
value and converted there into a switching command.
Depending on your requirements, VEGASWING 66 with two-wire
electronicscanbeconnectedtodierentsignalconditioninginstru-
ments. Compatible signal conditioning instruments are listed in
chapter "Technical data".
Thedataforpowersupplyarespeciedinchapter"Technical data".
3.3 Operation
Withthefactorysetting,productswithadensity≥0.7g/cm³
(0.025lbs/in³)canbedetected.Theinstrumentcanbeadaptedto
products with lower density.
Ontheelectronicsmoduleyouwillndthefollowingdisplayand
adjustment elements:
• Signal lamp for indication of the operating status (green)
• Control lamp for indication of the switching status (yellow)
• Control lamp for fault indication (red)
• DIL switch for sensitivity adjustment
• Mode switch for selecting the switching behaviour (min./max.)
• Test key
Application area
Functional principle
Voltage supply

10
3 Product description
VEGASWING 66 • - two-wire
43758-EN-151111
3.4 Storage and transport
Your instrument was protected by packaging during transport. Its
capacity to handle normal loads during transport is assured by a test
based on ISO 4180.
The packaging of standard instruments consists of environment-
friendly, recyclable carton material.The sensing element is additional-
ly protected with a cardboard cover. For special versions, PE foam or
PE foil is also used. Please dispose of the packaging material through
specialised recycling companies.
Transport must be carried out in due consideration of the notes on the
transport packaging. Nonobservance of these instructions can cause
damage to the device.
The delivery must be checked for completeness and possible transit
damage immediately at receipt. Ascertained transit damage or con-
cealed defects must be appropriately dealt with.
Up to the time of installation, the packages must be left closed and
stored according to the orientation and storage markings on the
outside.
Unless otherwise indicated, the packages must be stored only under
the following conditions:
• Not in the open
• Dry and dust free
• Not exposed to corrosive media
• Protected against solar radiation
• Avoiding mechanical shock and vibration
• Storage and transport temperature see chapter "Supplement -
Technical data - Ambient conditions"
• Relative humidity 20 … 85 %
3.5 Accessories
Screwedangesareavailableindierentversionsaccordingtothe
following standards: DIN 2501, EN 1092-1, BS 10, ASME B 16.5,
JIS B 2210-1984, GOST 12821-80.
Youcanndadditionalinformationinthesupplementaryinstructions
manual "Flanges according to DIN-EN-ASME-JIS".
The electronics module SW E60 is a replacement part for level switch-
es VEGASWING 66.
Youcanndinformationintheoperatinginstructionsmanualofthe
electronics module.
For connecting the sensors with a separator to voltage supply or sig-
nal processing, the sensors are also available with plug connectors.
The following plug connectors are available:
• M12 x 1
• ISO 4400
Packaging
Transport
Transport inspection
Storage
Storage and transport
temperature
Flanges
Electronics module
Plug connector

11
3 Product description
VEGASWING 66 • - two-wire
43758-EN-151111
• Harting HAN 7D
• Harting HAN 8D
• Amphenol-Tuchel

12
4 Mounting
VEGASWING 66 • - two-wire
43758-EN-151111
4 Mounting
4.1 General instructions
Make sure that all parts of the instrument coming in direct contact
with the process, especially the sensor element, process seal and
processtting,aresuitablefortheexistingprocessconditions,such
as process pressure, process temperature as well as the chemical
properties of the medium.
Youcanndthespecicationsinchapter"Technical data" and on the
nameplate.
In general, VEGASWING 66 can be installed in any position.The
instrument only has to be mounted in such a way that the tuning fork
is at the height of the desired switching point.
The tuning fork has lateral markings (notches) that indicate the
switching point with vertical mounting. The switching point applies
to water in conjunction with the basic setting of the density switch
≥0.7g/cm³(0.025lbs/in³).WhenmountingVEGASWING66,make
sure that this marking is at the height of the requested switching point.
Keep in mind that the switching point of the instrument will shift if the
mediumhasadensityotherthanwater-wateris1g/cm³(0.036lbs/
in³).Forproducts≤0.7g/cm³(0.025lbs/in³)and≥0.47g/cm³
(0.017lbs/in³)thedensityswitchmustbesetto≥0.47g/cm³.
Keepinmindthatfoamswithadensity≥0.45g/cm³(0.016lbs/in³)
are detected by the sensor. This can lead to erroneous switchings,
particulary when the sensor is used for dry run protection.
2
3
14
Fig. 3: Vertical mounting
1 Switching point approx. 13 mm (0.51 in)
2 Switching point with lower density
3 Switching point with higher density
4 Switching point approx. 33 mm (1.3 in)
Suitability for the process
conditions
Switching point

13
4 Mounting
VEGASWING 66 • - two-wire
43758-EN-151111
1
2
Fig. 4: Horizontal mounting
1 Switching point
2 Markingontopwiththreadedversions,markingalignedtoangeholeswith
angeversions
1
2
Fig. 5: Horizontal installation (recommended mounting position, particularly for
adhesive products)
1 Switching point
2 Marking with screwed version, facing up
Inthecaseofangeversions,theforkisalignedasfollows.
1
Fig.6:Forkpositionwithangeversions
1 Markingwithangeversion,facingup
Use the recommended cables (see chapter "Connecting to power
supply") and tighten the cable gland.
Moisture

14
4 Mounting
VEGASWING 66 • - two-wire
43758-EN-151111
You can give your instrument additional protection against moisture
penetration by leading the connection cable downward in front of the
cableentry.Rainandcondensationwatercanthusdraino.Thisap-
plies mainly to outdoor mounting as well as installation in areas where
high humidity is expected (e.g. through cleaning processes) or on
cooled or heated vessels.
Fig. 7: Measures against moisture ingress
Caution:
Do not hold VEGASWING 66 on the tuning fork. Particularly with
angeortubeversions,thetuningforkcanbedamagedjustbythe
weight of the instrument.Transport coated instruments very carefully
and avoid touching the tuning fork.
Remove the packaging or the protective cover just before installation.
The vibrating level switch is a measuring instrument and must be
treated accordingly. Bending the vibrating element will destroy the
instrument.
Warning:
The housing must not be used to screw the instrument in! Applying
tightening force can damage internal parts of the housing.
Use the hexagon above the thread for screwing in.
In the case of instrument housings with self-sealing NPT threads, it is
not possible to have the cable entries screwed in at the factory. The
free openings for the cable glands are therefore covered with red dust
protection caps as transport protection.
Prior to setup you have to replace these protective caps with ap-
proved cable glands or close the openings with suitable blind plugs.
4.2 Mounting instructions
The thread and the seal on the threaded version of VEGASWING 66
correspond to DIN 3852 part 1, screwed plug Form B (sealing via
metallic sealing edge).
Use screw-in openings or screw-in sleeves according to DIN 3852
part 2.
Transport
Handling
Cable entries - NPT
thread
Welding socket

15
4 Mounting
VEGASWING 66 • - two-wire
43758-EN-151111
Make sure that with instruments with 1" NPT thread, the screw-in
opening on the vessel has an inside diameter of at least 29.5 mm
(1.16 in).
To mount the sensor, proceed as follows:
1. Screw the VEGASWING 66 into the mounting boss up to the stop.
You can determine the later position already before welding.
2. Mark the position of the VEGASWING 66 on the mounting boss.
3. Mark the respective position of the mounting boss on the vessel
or pipeline.
In case of lateral mounting, make sure the mark on the spanner
atofVEGASWING66pointsupwards.
When mounting in pipelines, make sure that the surfaces of the
tuningforkareparalleltothedirectionofow.
4. Remove the VEGASWING 66 from the mounting boss before
welding.
5. Weld the mounting boss according to your marking.
Incaseofhorizontalmountinginadhesiveandviscousproducts,
the surfaces of the tuning fork should be vertical in order to reduce
builduponthetuningfork.Onthescrewedversionyouwillnda
marking on the hexagon. With this, you can check the position of the
tuning fork when screwing it in.
Inthecaseofangeversions,theforkisalignedwiththeangeholes.
When used in adhesive and viscous products, the tuning fork should
protrude into the vessel to avoid buildup. For that reason, sockets
forangesandmountingbossesshouldbeavoidedwhenmounting
horizontally.
Theprocessttingmustbesealedifthereisgaugeorlowpressurein
the vessel. Before use, check if the seal material is resistant against
the measured product and the process temperature.
Themax.permissiblepressureisspeciedinchapter"Technical
data" or on the type label of the sensor.
Note:
Sealforinstrumentswithprocessttingthread
The thread and the seal form on the mounting boss correspond to
DIN 3852, part 1, screwed plug Form B (sealing via metallic sealing
edge). In this case, no seal is required.
Instruments for high temperatures have a temperature adapter be-
tweenprocessttingandelectronicshousing.Thisisusedforthermal
decoupling of the electronics from high process temperatures.
Information:
The temperature adapter may be embedded in the vessel insulation
only up to max. 50 mm (1.97 in). Only then is a reliable temperature
decoupling guaranteed.
Adhesive products
Pressure/Vacuum
Mounting in the vessel
insulation

16
4 Mounting
VEGASWING 66 • - two-wire
43758-EN-151111
1
2
Fig. 8: Mounting the instrument on insulated vessels.
1 Temperature isolation - max. 50 mm (1.97 in)
2 Ambient temperature on the housing
IfVEGASWING66ismountedinthellingstream,unwantedfalse
measurement signals can be generated. For this reason, mount VE-
GASWING 66 at a position in the vessel where no disturbances, e.g.
fromllingopenings,agitators,etc.,canoccur.
This applies particularly to instrument types with long extension tube.
Fig.9:Inowingmedium
To make sure the tuning fork of VEGASWING 66 generates as little
resistanceaspossibletoproductow,mountthesensorsothatthe
surfaces are parallel to the product movement.
Duetotheeectsofagitators,equipmentvibrationorsimilar,thelevel
switch can be subjected to strong lateral forces. For this reason, do
Inowingmedium
Productow
Agitators

17
4 Mounting
VEGASWING 66 • - two-wire
43758-EN-151111
not use an overly long extension tube (optional) for VEGASWING 66,
instead check if it is possible to mount a short level switch VEGAS-
WING66onthesideofthevesselinhorizontalposition.
Extreme vibration caused by the process or the equipment, e.g.
agitators or turbulence in the vessel, can cause a long extension tube
of VEGASWING 66 to vibrate in resonance.This leads to increased
stress on the upper weld joint. Should a longer tube version be neces-
sary, you can provide a suitable support directly above the tuning fork
to secure the extension tube.
This measure applies mainly to applications in Ex areas of category
1GorWHGaswellastoshipclassications.Makesurethatthetube
is not subject to bending stress due to this measure.
Fig. 10: Lateral suppot of VEGASWING 66
The second seal of the gas-tight leadthrough (option) prevents an
uncontrolled leakage of the medium.The service life of the gas-tight
leadthrough depends on the chemical resistance of the materials.
See "Technical data".
Caution:
If it is determined (e.g. via an error message from VEGASWING 66)
that medium has already penetrated into the vibrating element, the
instrument must be exchanged immediately.
Gas-tight leadthrough

18
5 Connecting to power supply
VEGASWING 66 • - two-wire
43758-EN-151111
5 Connecting to power supply
5.1 Preparing the connection
Always keep in mind the following safety instructions:
Warning:
Connect only in the complete absence of line voltage.
• The electrical connection must only be carried out by trained
personnel authorised by the plant operator.
• Alwaysswitchopowersupply,beforeconnectingordisconnect-
ing the instrument.
Inhazardousareasyoumusttakenoteoftherespectiveregulations,
conformityandtypeapprovalcerticatesofthesensorsandpower
supply units.
Connect the voltage supply according to the following diagrams. Take
note of the general installation regulations. As a rule, connect VEGAS-
WING 66 to vessel ground (PA), or in case of plastic vessels, to the
next ground potential. On the side of the instrument housing there is
a ground terminal between the cable entries. This connection serves
todrainoelectrostaticcharges.InExapplications,theinstallation
regulationsforhazardousareasmustbegivenpriority.
Thedataforpowersupplyarespeciedinchapter"Technical data".
The instrument is connected with standard two-wire cable without
screen. If electromagnetic interference is expected which is above the
test values of EN 61326 for industrial areas, screened cable should
be used.
Use cable with round cross section for instruments with housing and
cablegland.Toensurethesealeectofthecablegland(IPprotection
rating),ndoutwhichcableouterdiameterthecableglandissuitable
for.
• 5 … 9 mm (0.20 … 0.35 in)
• 6 … 12 mm (0.24 … 0.47 in)
• 10 … 14 mm (0.40 … 0.55 in)
Useacableglandttingthecablediameter.
Inhazardousareas,useonlyapprovedcableconnectionsforVEGAS-
WING 66.
Take note of the corresponding installation regulations for Ex applica-
tions.
Cover all housing openings conforming to standard according to
EN 60079-1.
5.2 Connection procedure
With Ex instruments, the housing cover may only be opened if there is
no explosive atmosphere present.
Proceed as follows:
Note safety instructions
Take note of safety
instructions for Ex
applications
Voltage supply
Connection cable
Connection cable
for Ex applications

19
5 Connecting to power supply
VEGASWING 66 • - two-wire
43758-EN-151111
1. Unscrew the housing lid
2. Loosen compression nut of the cable entry gland
3. Remove approx. 10 cm (4 in) of the cable mantle, strip approx.
1 cm (0.4 in) of insulation from the ends of the individual wires
4. Insert the cable into the sensor through the cable entry
5. Open the terminals with a screwdriver
6. Insert the wire ends into the open terminals according to the wir-
ing plan
7. Tighten the terminals with a screwdriver
8. Check the hold of the wires in the terminals by lightly pulling on
them
9. Tighten the compression nut of the cable entry gland. The seal
ring must completely encircle the cable
10. Screw the housing lid back on
Theelectricalconnectionisnished.
5.3 Wiring plan, single chamber housing
The following illustrations apply to the non-Ex as well as to the Ex-d
version.
5
5
55
1 2
4
3
Fig. 11: Material versions, single chamber housing
1 Plastic (not with Ex d)
2 Aluminium
3 Stainless steel, precision casting
4 Stainless steel, electropolished (not with Ex d)
5 Filter element for pressure compensation or blind plug with version IP 66/
IP 68, 1 bar (not with Ex d)
Housing overview

20
5 Connecting to power supply
VEGASWING 66 • - two-wire
43758-EN-151111
9
4
7
15
3
2
6
8
on
4
32
Te st
1
Z
12
0,7
max
min
g / cm3
0,47
Fig. 12: Electronics and terminal compartment, single chamber housing
1 Control lamp - fault indication (red)
2 Control lamp - Switching status (yellow)
3 Control lamp - Operating status (green)
4 Mode switch for selecting the switching behaviour (min./max.)
5 DIL switch for sensitivity adjustment
6 Test key
7 Ground terminal
8 Connector block
9 Connection terminals
We recommend connecting VEGASWING 66 according to the closed-
circuit principle, i.e. the switching circuit is open when there is a level
signal, line break or fault (safe state).
For connection to a suitable signal conditioning instrument. The sen-
sor is powered by the connected signal conditioning instrument. Fur-
ther information is available in chapter "Technical data", "Ex-technical
data" are available in the supplied "Safety information manual".
The wiring example is applicable for all suitable signal conditioning
instruments.
The yellow control lamp on the VEGASWING 66 lights depending on
the adjusted mode.
Take note of the operating instructions manual of the signal condition-
ing instrument. Suitable signal conditioning instruments are listed in
chapter "Technical data".
If VEGASWING 66 is used in Ex areas, take note of the regulations
inthesafetyinstructionsandconformitycerticates.Iftheinstrument
is to be operated directly on the analogue input of a PLC, a suitable
safety barrier should be connected.
Electronics and terminal
compartment
Wiring plan