Beijer Electronics EXTER T60, EXTER T60m Installation Manual

EXTER T60/T60m

Installation Manual

English

MAEN809F, 2014-11

Foreword

Installation manual for EXTER T60/T60m

Foreword

All EXTER operator panels are developed to satisfy the demands of
human-machine communication. Built-in functions such as displaying and
controlling text, dynamic indication, time channels, alarm and recipe handling
are included.

The operator panel works primarily in an object-oriented way,making it easy to
understand and use. Configuration is carried out on a PC using the configuration
tool. The project can then be transferred and stored in the operator panel itself.

Various types of automation equipment such PLCs, servosor drives can be
connected to the EXTER operator panels. In this manual, the term “the
controller” refers to the connected equipment.

This manual explains how to install the operator panel. Please refer to the
reference manual for further information.

Order no: MAEN809F

Copyright © 2014-11 Beijer Electronics AB. All rights reserved.

The information in this document is subject to changewithoutnoticeandisprovidedasavailableatthe

time of printing. Beijer ElectronicsAB reserves the right to change any information without updatingthis

publication. Beijer Electronics AB assumes no responsibility for any errors that may appear in this document.

Read the entire installation manual prior to installing and using this equipment. Only qualified personnel

may install, operate or repair this equipment. Beijer Electronics AB is not responsible for modified, altered

or renovated equipment. Because the equipment has a widerangeofapplications,usersmustacquirethe

appropriate knowledge to use the equipment properly in their specificapplications. Personsresponsible

for the application and the equipment must themselves ensure that each application is in compliancewith

all relevant requirements, standards and legislationinrespecttoconfigurationandsafety. Onlypartsand

accessories manufactured according to specifications set by Beijer Electronics AB may be used.

BEIJER ELECTRONICS AB SHALL NOT BE LIABLE TO ANYONE
FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTALOR
CONSEQUENTIAL DAMAGES RESULTING FROMTHE
INSTALLATION, USE OR REPAIR OF THIS EQUIPMENT, WHETHER
ARISING IN TORT, CONTRACT, OR OTHERWISE. BUYER'S SOLE
REMEDYSHALL BE THE REPAIR,REPLACEMENT, OR REFUND
OF PURCHASEPRICE, AND THE CHOICE OF THE APPLICABLE
REMEDYSHALLBEATTHESOLEDISCRETIONOFBEIJER
ELECTRONICSAB .

Beijer Electronics, MAEN809F

Contents

Contents

1 Safety Precautions ....................................................... 4

1.1 General ...........................................................

4

1.2 UL and cUL Installation .........................................

4

1.3 DuringInstallation ..............................................

6

1.4 DuringUse .......................................................

6

1.5 Service and Maintenance ........................................

6

1.6 Dismantling and Scrapping .....................................

6

2 Installation ............................................................... 7

2.1 SpaceRequirements .............................................

7

2.2 InstallationProcess ..............................................

7

2.2.1 ModeSwitches ...................................................

10

2.2.2 ConnectionstotheController ..................................

10

2.2.3 OtherConnectionsandPeripherals .............................

10

3 Technical Data ........................................................... 11

4 ChemicalResistance .................................................... 13

4.1 MetalCasing .....................................................

13

4.2 Touch Screen and Overlay Material ............................

13

4.2.1 AutotexF157/207 ...............................................

13

4.2.2 TouchScreenSurface ............................................

14

4.2.3 TouchScreenProtector ..........................................

15

5 Operator PanelDrawings .............................................. 16

5.1 CommunicationPorts ...........................................

16

5.2 EXTER T60/T60m Outline ....................................

17

6 Additional Installation Tips ............................................ 18

6.1 Grounding the Operator Panel .................................

18

6.2 Ethernet Connection in the Panel ..............................

19

6.3 To Achieve Better EMC Protection .............................

20

6.4 AmbientTemperature ...........................................

21

6.5 Safety .............................................................

22

6.6 GalvanicIsolation ................................................

23

6.7 Cable and Bus Termination RS485 .............................

24

Beijer Electronics, MAEN809F

Safety Precautions

1SafetyPrecautions

Both the installer and the owner and/oroperator of the operator panel must read
and understand this installation manual.

1.1 General

• Read the safety precautions carefully.

• Check the delivery for transportation damage. If damage is found, notify the

supplier as soon as possible.

• The supplier is not responsible for modified, altered or reconstructed

equipment.

• Use only parts and accessories manufactured according to specifications of

the supplier.

• Read the installation and operating instructions carefully before installing,

using or repairing the operator panel.

• Neverallowfluids,metalfilingsorwiringdebristoenteranyopeningsinthe

operator panel. This may cause fire or electrical shock.

• Only qualified personnel may operate the operator panel.

• Storing the operator panel where the temperature is lower/higher than

recommended in this manual can cause the LCD display liquid to
congeal/become isotopic.

• The LCD display liquid contains a powerful irritant. In case of skin contact,

wash immediately with plenty of water. In case of eye contact, hold the eye
open,flushwithplentyofwaterandgetmedicalattention.

• Thefiguresinthismanualservesanillustrativepurpose. Becauseofthemany

variables associated with any particular installation, the supplier cannot
assume responsibility for actual use based on the figures.

• The supplier neither guarantees that the operator panel is suitable for your

particular application, nor assumes responsibility for your product design,
installation or operation.

• It is recommended to turn on and shut down the operator panel at least once

before installing any components/cards or beforeconnecting the operator
panel to external devices, like for example serial devices.

1.2 ULandcULInstallation

Caution:

This section is only valid for UL labeled EXTER T60/T60m panels.

• This equipment is suitable for use in non-hazardous locations only.

[Combinations of equipment in your system are subject to investigation by
the local authority having jurisdiction at the time of installation].

• All devices have to be supplied by a Class 2 power supply.

Beijer Electronics, MAEN809F

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Safety Precautions

Warning:

Do not disconnect equipment unless powerhasbeen removed or the area is
knownto be non-hazardous
AVANTDEDECONNECTER L’EQUIPEMENT, COUPER LE COURANT
OUS’ASSURER QUE L‘EMPLACEMENT EST DESIGNE NON DANGEREU X.

Warning:

Only UL and cUL approved expansion units are allowed to be connected to
the port designated “EXPANSION”. At themoment there are no such units
evaluated or allowed.
SEULES LES UNITÉSD'EXTENSION CERTIFIÉESUL ET
cUL PEUVENT ÊTRE RACCORDÉES AU PORT DÉSIGNÉ « EXPANSION ».
À L'HEURE ACTUELLE, AUCUNE UNITÉ DE CE TYPE N'A ÉTÉ TESTÉE
OU AUTORISÉE.

Warning:

Do not replace expansion unit unless power has been switched off or the area
is known to benon-hazardous.
NE REMPLACEZ L'UNITÉ D'EXTENSION QUE SI LE
COURANT A ÉTÉ COUPÉ OU SI LA ZONE EST JUGÉE NON DANGEREUSE.

• This product contains a battery; this must only be cha

nged in an area known

to be non-hazardous.

• Replace the battery with a CR2450 battery. Us

e of another type of battery

may present a risk of fire orexplosion.

Warning:

Batterymay explode if mistreated. Do not recharge, disassemble or dispose
of in fire.
LA BATTERIEPEUTEXPLOSER EN CAS DE MAUVAISE MANIPULATION.
NE LA RECHARGEZ PAS,NE LA DÉMONTEZPAS ET NE LA JETEZ
PAS D A N S LE F E U .

• Foruse on a flat surface of a type 4X enclosure indoor use only.

• Use minimum 75°C copper conductors only.

• To make wiring connections to the power supply connector, follow the table

with cable and torque specifications below:

Terminal Block Connector Wire Size TQ Lb.In.

X1/X100 Phoenix connectors AWG 30–12 5–7

X1/X100 Anytek connectors AWG 24–12 3.5

• These dev

ices are Class 2 supplied programmable controllers (industrial PCs)

for the u

se in industrial control equipment and are intended to be (front)

panel mo

unted (Type 1 and 4x for indoor use only).

Beijer Electronics, MAEN809F

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Safety Precautions

Caution:

TheenclosureprovidesadegreeofprotectionofatleastIP20,butwheninstalledinan
apparatus,it should meet IP54.
LE BOÎTIER OFFRE UN DEGRÉ DE PROTECTION D'AU MOINS IP20, MAIS
LORSQU'IL EST INSTALLÉ DANS UN APPAREIL,ILDOIT ÊTRE DE CLASSE IP54.

1.3 During Installation

• The operator panel is designed for stationary installation on a plane surface,

where the following conditions are fulfilled:

– no high explosive risks
– no strong magnetic fields
– no direct sunlight
– no large, sudden temperature changes

• Install the product according to the accompanying installation instructions.

• Ground the product according to the accompanying installation instructions.

• Only qualified personnel may install the operator panel.

• Separate the high voltage, signal and supply cables.

• Make sure that the voltage and polarity of the power source is correct before

connecting the product to the power outlet.

• Peripheralequipment must be appropriate for the application and location.

1.4 During Use

• Keep the operator panel clean.

• Emergency stopand other safety functions

may notbe controlled from the

operator panel.

• Do not use excessive force or sharp objec

ts when operating the touchscreen.

1.5 Service and Maintenance

• Only qualified personnel should carry out repairs.

• The agreed warranty applies.

• Before carrying out any cleaning or maintenance operations, disconnect the

equipment from the electrical supply.

• Clean the display and surrounding front cover with a soft cloth and mild

detergent.

• Replacing thebattery incorrectly may result in explosion. Only use batteries

recommended by the supplier. During the warranty period, the battery needs
to be replaced by an authorized Beijer Electronics service center.

1.6 Dismantling and

Scrapping

• The operator p

anel or parts thereof shall be recycled according to local

regulations.

• The followin

g components contain substances that might be hazardous

to health a

nd the environment: lithium battery,electrolytic capacitor and

display.

Beijer Electronics, MAEN809F

6

Installation

2Installation

2.1 Space Requirements

• Installation plate thickness: 1.5 - 7.5 mm (0.06 - 0.3 inch)

• Space requirements when installingthe operator panel:

50 mm

152 mm

202 mm

(2.0 inch)

50 mm

(2.0 inch)

100 mm
(4.0 inch)

100 mm
(4.0 inch)

100 mm
(4.0 inch)

57 mm

(2.24 inch)

(7.95 inch)

(5.98 inch)

Caution:

The openings on the enclosure are for air conve

ction. Do not cover these openings.

2.2 Installation Process

1.

Unpack and check the delivery. If dama

ge is found, notify the supplier.

x 4

Panel cut out 180 x 130 mm

(7.09 x 5.12 inch)

Note:

Place the operator panel on a stable surface during installation.
Droppingit or lettingit fall may cause damage.

Beijer Electronics, MAEN809F

7

Installation

2.

Place the panel cut out where the operator panel is to be situated, draw along
the outer sides of the holes andcut according to the markings.

3.

Secure the operator panel in position, using all the fastening holes and the
provided brackets and screws:

x 4

0.5 - 1.0 Nm

Beijer Electronics, MAEN809F

8

Installation

4.

Connect the cables in the specified order,according to the drawing and steps
below.

Caution:

• The operator panel must be brought to ambient temperature before itis started

up. If condensation forms, ensure that the operator panel is dry before connecting
it to thepower outlet.

• Ensurethat the operator panel and the controller system have the same electrical

grounding(reference voltage level), otherwise errors in communication may
occur.

• Ensure that the voltage and polarity of the power source is cor rect.

• Separatehigh voltage cables from signal and supplycables.

• Shielded communication cables are recommended.

24V DC

RS422/
RS485
RS232

24V DC

A

C

D

Controller

Power

B

Ethernet

– Connect cable A.
– Connect cable B, using an M5 screw and a grounding conductor (asshort

as possible), that is sized correctly according to local electrical codes.

– Connect cable C.
– Connect cable D.

5.

Carefully remove the laminated film over the operator panel display, to avoid
static electricity that could damage the panel.

Beijer Electronics, MAEN809F

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Installation

2.2.1 Mode Switches

All mode switches must be in OFF position during operator panel use.
Themodeswitchesshouldnotbetouchedunlessbyqualifiedpersonnel.

1 2 3 4

ON DIP

1 2 3 4

ON DIP

2.2.2 Connections to the Controller

Forinformation about the cables to be used when connecting the operator panel to
the controller, please refer to the help file for the driver in question.

2.2.3 Other Connections and Peripherals

Cables, peripheral equipment and accessories must be suitable for the application
and its environment. For further details or recommendations, please refer to the
supplier.

Beijer Electronics, MAEN809F

10

Technical Data

3TechnicalData

Parameter EXTER T60/T60m

Frontpanel,WxHxD 202x152 x6mm
Mountingdepth 57 mm (157 mm including clearance)
Front panel seal IP 66
Rear panel seal IP 20
Keyboard

material/Front
panel

Touch screen: Polyester on glass, 1 million finger touch
operations. Overlay: Autotex F157 or F207*.

Reverse side
material

Powder-coated aluminum

Weight 0.9 kg
Serialport

RS422/RS485

25-pin D-sub contact, chassis-mounted female with
standard locking s crew s 4-40 UNC

Serialport RS232C 9-pin D-sub contact, male with standard locking screws 4-40

UNC

Flashmemory for
application

12 MB (inc l. fonts)

Ethernet ShieldedRJ 45
USB Host type A (USB 1.1), max outputcurrent 500 mA
Realtimeclock ±20 PPM + error because of ambient temperature. Total

maximumerror: 1 minute/month at 25°C.
Tempera t u r e coefficient: -0.034±0.006 ppm/°C

2

Real time clock
battery

CR2450 (UL and cUL: Sanyo or Panasonic)
Minimumlifetime: 3 years

Power consumption
at rated voltage

Normal: 0.2 A
Maximum: 0.4 A
(For T60c and for T60m with hardwareversion lower than
07600: Normal: 0.25A, Maximum: 0.45 A)

Display 320 x 240 pixels,T60: TFT-LCD, 64K colors.

(For T60c: transmissive color STN-LCD, 64K colors; for
T60m: TFT-LCD, 16 greyscales; for T60m with hardware
versionlower than 07600: transmissive monochrome
STN-LCD.)
T60: LED backlight lifetime at the ambient temperatureof
+25 °C: >50,000 h.
(For T60c: CCFL backlight lifetime(at 25°C): >75,000 h.
For T60m with hardware version lowerthan 07600: CCFL
backlightlifetime (at 25°C): >58,000 h.)

Activearea of
display, W x H

115.2 x 86.4 mm

Fuse Internal DC fuse , 2.0 AT, 5 x 20 mm
Powersupply +24 V DC (20 - 30 V DC). Powersupplyconnector.

CE: The power supply must conform with the requirements
accordingto IEC 60950and IEC 61558-2-4.
UL and cUL: The power supply must conform with the
requirements for class II power supplies.

Beijer Electronics, MAEN809F

11

Technical Data

Parameter EXTER T60/T60m

Ambient
temperature

Verticalinstallation: 0 ° to +50 °C

Horizontal installation: 0 ° to +40 °C
Storagetemperature -20 ° to +70 °C
Relativehumidity 5 - 85 % non-condensed
Approvalsand

certifications

Information is available onthe web site

www.beijerelectronics.com

*SeesectionChemical Resistance for more information.

Beijer Electronics, MAEN809F

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Chemical Resistance

4 Chemical Resistance

4.1 Metal Casing

The frame and casing material is powder-coated aluminum. This powder paint
withstands exposure to the following chemicals without visible change:

Acetic acid 10% Phosphoricacid4%

Citricacid 10% Phosphoricacid10%

Diesel Sea water

Distilled water Sodiumchloride 2%

Edibleoil Sodiumchloride 20%

Fuel oil Sulphuric acid 20%

Hydrogen peroxide 3% Tap water

The powder paint shows limited resistance to the f

ollowing chemicals at room

temperature:

Butanol Nitric acid 3%

Hydrochloric acid 5% Nitric acid 10%

Isopropyl alcohol Phosphoricacid 43%

Na-hypochlorite10% Turpentine

Note:

If exposure to any of theabove chemicalsis demanded,it is recommended to first test
the chemical in a hidden spot of the metal casing.

Thepowderpaintshowslittleornoresistancetothefollowingchemicalsatroom
temperature:

Acetic acid, conc. Methyl-ethyl ketone Toluene

Acetone Nitric acid 30% Trichlorethylene

Ammonia5% Phenol Xylene

Ammonia,conc. Sodiumhydroxide 5% 97octanunleaded petrol

Ethyl acetate Sodium hydroxide 30% 98 octan leaded petrol

4.2 Touch Screen and Overlay Material

4.2.1 Autotex F157/207

Autotex F157 or F207 covers the overlay surrounding the screen.

Beijer Electronics, MAEN809F

13

Chemical Resistance

Solvent Resistance

Autotex F157/F207 withstands exposure of more than 24 hours duration under
DIN42115Part2tothefollowingchemicalswithoutvisiblechange:

Acetonitrile DieselDowney / Lenor

1

Phosphoricacid(<30%)

Ajax / Vim in solution EthanolPotassiumferricyanide

Alkalicarbonatesolution1Glycerine Potassiumhydroxide

(<30%)

Ammonia(<40%)

1

Glycol Pure Turpentine

Acetic acid (<50%) Gumption

1

SBP 60/95

1

Ariel powder in solution1Hydrochloricacid (<36%) Sulfuricacid (<10%)

Bleach

1

Linseed oil Tomato ketchup

Castoroil Methanol Trichloroacetic acid

(<50%)

Caustic soda (<40%)

1

Nitric acid (<10%) White Spirit

Cutting oil Paraffinoil Windex

1

Cyclohexanol Persilpowder in solution1Wisk

Diacetonealcohol Petroleum spirit

1

-

1

Extremely faint glossing of the texture was noted.

Autotex withstands DIN 42 1

15 Part 2 exposure of up to 1 hour duration to glacial

acetic acid without visib

le change.

Autotex is not resistant to high pressure steam at over 100 °C or the following
chemicals:

Concentratedmineral acids Benzyl alcohol

Concentrated caustic solution Methylene chloride

Outdoor Use

In common with all polyester based films Autotex F157/F207 is not suitable for
use in conditions of long term exposure to direct sunlight.

4.2.2 Touch S

creen Surface

The touch screen surface on the operator panel withstands exposure to the
following solvents without visible change:

Solvents Time

Acetone 10 minutes

Isopropanol 10 minutes

Toluene 5 h o urs

Beijer Electronics, MAEN809F

14

Chemical Resistance

4.2.3 Touch Screen Protector

Forharsh environments and exposure to outdoor conditions, it is recommended
to use a protective film to guard the touch screen from damage. These optional
parts can be ordered from Beijer Electronics.

Beijer Electronics, MAEN809F

15

Operator Panel Drawings

5 Operator Panel Drawings

5.1 Communication Ports

RS-232

RS-422

RS-422/485

RS-485

Ethernet

USB

Beijer Electronics, MAEN809F

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Operator Panel Drawings

5.2 EXTER T60/T60m Outline

Beijer Electronics, MAEN809F

17

Additional Installation Tips

6 Additional Installation Tips

When experiencing communication problems in for example noisy environments
or when operating close to temperature limits, the following recommendations
are to be noticed.

6.1 Grounding the Operator Panel

1

2

3

4

5

6

Door

Operator panel

Ferrite core

Mounting plate in the cabinet

Power supply

24 V DC

5350

The operatorpanel’smounting clamps do not provide a secure grounding
connection between the panel and the device cabinet, see 1 in drawing above.

1.

Connect a wire that is sized correctl

y according to local electrical codes

between the operator panel’s quick

-connect plinth and the panel’s chassis, see

2indrawingabove.

2.

Connect a 6 or 4 mm

2

wire or grounding braid between the panel’schassis and

the closest grounding point on the door,see 3 in drawing above.

3.

Connect a strong but short grounding braid between the door and the device
cabinet,see 4 in drawing above.

4.

Twist the cables onto the 24 V DC feed, see 5 in drawing above.
2 turns around the ferrite core provide 4 times the suppression of 1 turn.
3 turns around the ferrite core provide 9 times the suppression of 1 turn.

A ferrite core suppresses disturbances to the 24 V feed, see 6 in drawing above.

Note:

The grounding wires should be short and the conductor should havea large area.
A long, thin grounding wire has a very high impedance (resistance) at high frequencies
and will not guide disturbances to the ground.
Multi-wireconductors are better than singlewireconductorswiththesamearea.
A braided conductor wire withthe same area is even better. The best is a short, thick
grounding braid.

Beijer Electronics, MAEN809F

18

Additional Installation Tips

6.2 Ethernet Connection in the Panel

1

2

3

4

5

1-1
2-2
3-3

8-8

RJ45

RJ45

RJ45

RJ45

RJ45

RJ45

RJ45

RJ45

Industrial Ethernet

Operator panel

Operator panel

Operator panel

Operator panel

Shielded

Short and
unshielded

0.1 uF
250 V

5351

In some industrial units for Ethernet, the RJ45 contact’s shield is connected to the
chassis via a capacitor,see 1 in drawing above.

The operator panel’sEthernet shield is directly

connected to thechassis, see 2 in

drawing above.

1.

Check whetherthe other Ethernet unit has its shield directly grounded or
grounded via a capacitor.

Note:

In many cases, connecting the shielded Ethernet cabling to the chassis at both ends is
inappropriate. Hum or grounding loops can occur. Unshielded cabling may even result
in fewer communication errors.

A good solution may be to use a shielded Ethernet cable, but to connect the shield
at one end only.

One option is to break the shield, see 3 in drawing above.
A more elegant method is to expand the shielded Ethernet cabling with a piece of

unshielded Ethernet cable, see 4 in drawing above.
You can ground the shield via an external 0.1 µF/250 V plastic capacitor,see 5 in

drawing above. This will connect the HF transients to the ground.

Beijer Electronics, MAEN809F

19

Additional Installation Tips

6.3 To Achieve Better EMC Protection

• Useshielded cables for RS232 communication.

• Usetwisted pair and shielded cabling for RS422 and RS485.

• Usethe cabling intended for the bus type; Ethernet, Profibus, CC-Link,

CAN, Device Net etc.

• Install and connect according to applicable specifications for the relevant bus

standard.

• Useshielded cabling for Ethernet, preferably with foil and a braided shield.

• D-sub covers should be shielded, and the shield should be connected to the

cover 360° where the cable enters.

• Connect the shield at both ends.

Shielded cable

Not same potential

Ground plane 1 Ground plane 2

Ground plate Ground plate

in another building

0.1 uF/250 V

5352

With longer distances, there is a risk that the ground potential may be different.
In that case, the shield should only be connected at one end. A good alternative
is to connect the other end of the shield to the ground via a 0.1 µF/250 V plastic
capacitor. Both ends are then connected to the ground in terms of HF, but only
connected to the ground at one end in terms of LF, thus avoiding the 50 Hz
grounding loops.

Metal cabinet Metal cabinet

Terminal or connector Terminal or connector

EMC cable gland Plastic cable gland

Shielded cable Shielded cable

Short distance

Cable clamp
in steel

5353

1.

UseanEMCcableglandorregul

ar plastic cable gland, remove the outer jacket

andconnecttheshieldtothe

installation plate with a 360 ° metal cable clamp.

2.

Place the 24 V DC and communications cabling in one cable trunk/cable duct
and 230/380 V AC in another. If the cables need to be crossed, cross them at
90 ° only. Avoidcombining the cabling for stronger 24 V DC outputs with
the communication cabling.

Ferritecores that are snapped onto the shielded cabling may remove minor
disturbances. Large ferrite pieces that are snapped onto unshielded cabling and
where the wires go 2-4 times around the cores are approximately 5-25 times more
efficient.

Beijer Electronics, MAEN809F

20

Additional Installation Tips

6.4 Ambient Temperature

The maximum ambient temperature for the operator panel is provided in the
specifications. The ambient temperature refers to the temperature in the device
cabinet which coolsthe panel’s electronics.

Operator
panel

Power

Power

Power

30 °C outside

Top
50 °C inside

Bottom
40 °C inside

Middle
45 °C inside

Airflow

Axial fan
120 x 120 mm

5354

Inmostcases,theambienttemperaturefortheoperatorpanelissignificantly
higher than the device cabinet’s ambient temperature.

If the cabinet is tall and there are a number of hea

t-generating devices, the

temperature at the top of the cabinet will be con

siderably higher than the

theoretical temperature increase that would

be expected. All electronics are

sensitivetoheat. Thelifespanofanelectro

lytic capacitor is cut in half with an

8-10 °C increase in temperature. A 15-20 °C t

emperature increase results in a

quarter of the lifespan etc.
Rittal has a good program for estimating the anticipated average temperature in

the cabinet as well as a large program for controlling the temperature in the device
cabinet.

An enamel-coated steel cabinet has

a radiant heat value of 5.5 W/m

2

and degrees

C.
Installing a fan inside the cabinet will even out the temperature, while moving air

provides considerably better cooling than still air. A suitable fan is a 120 x 120 mm
axial fan, available in 24 V DC, 115 and 230 V AC.

Installthefansothatitsit

s in the cooler area and blows cold air against the operator

panel. If the fan is mounted

at the top and sucks warm air upwards, the fan’s

ambient temperature will

be higher, resulting in a shorter lifespan.

Agoodfanwithaball-bearingmountinghasanexpectedlifespanofatleast
40,000 hours (not a guaranteed lifespan) at 40 °C. This corresponds to at least 4
years of continuous use. If a thermostat is installed, the fan only operates when
needed.

Large graphic termi

nals draw only one fifth of the current when the background

lighting is off. Th

e loss effect drops from e.g. 25 W to only 5 W.

An approximate value of the net power consumption for the operator panel can
be calculated by multiplying the supply voltage withthe current drawn by the
operator panel. This is assuming that all supplied power is transformed to heat.

Beijer Electronics, MAEN809F

21

Additional Installation Tips

6.5 Safety

Most of the operator panels are fed with 24 V DC.

4

1

2

4

3

4

Power supply
230 V AC to 24 V DC

Power supply
230 V AC to 24 V DC

Power supply
230 V AC to 24 V DC

Operator panel

Operator panel

Operator panel

Distance?

Small controller with expansion unit

+24 V

+24 V

+24 V

0 V

0 V

0 V

230 V AC

COM1

COM100

Ch0

Ch1

Ch100

Ch101

5355

If a power supply that meets safety standards is used and only feeds the operator
panel, there is no problem. See 1 in drawing above.

However, if a 24 V unit that also feeds other units is used, there is reason to be
cautious, see 2 in drawing above. The operator panel does not have insulation
that meets safety requirements in the eventof a potential short circuit between
230 V AC and 24 V DC. It is assumed that the 24V feed is secure, for example,
SELV according to EN 60950 (protection against electric shock) and UL 950.

Note:

Here is an example that explains why a secure 24 V DC feed can be ruined by mixing
24 V r elaycontacts with 230 V AC relay contacts in a smaller controller. Check that the
clearancesand creepage distances between 24 V DC and 230 V AC ful fill EN 60950 or
UL 950. If not, input a separate 24 V unit into the operator panel.

If there is a substant

ial distance between the relay contacts for 24 V DC and

230 V AC, it is OK to us

e the same 24 V devices for all feeds. See 3 in drawing

above.
Connect 0 V on the 24 V feed to the ground, see 4 in drawing above. This offers

three advantages:

• Safety is incre

ased. The 24 V feed will not be live in the event of a faulty

connection or

short circuit between 0 V (24 V) and 230 V phase.

• Tr a n s i e n t s o n

the 24 V feed are connected to the ground.

• No risk that t

he 24 V feed is at a highlevel in relationship to the ground. This

is not unus

ual since there is high static electricity.

Beijer Electronics, MAEN809F

22

Additional Installation Tips

6.6 Galvanic Isolation

USB

USB

RS232RS422/485

+24 V DC

0 V

Filter

DC/DC
galvanic isolation

VCC

0 V (GND)

DC/AC

CFL

Ethernet

Internal electronic

1.5 m

5356

The operator panel has galvanic isolation against the 24 V DC feed but no galvanic
isolation between the communication ports for RS232, RS422/485 and USB.
Only the Ethernet connection has galvanic isolation.

* *

*

***

**

*

Operator panel Modular controller Printe

r

PCPC

Not same ground potential

* = Internal 0 V (GND) connection

Power CPU COM COM2

RS422 RS232 USB

5357

When a PC is connected to the panel, the panel’sinternal 0 V (G

ND) will be

connected to the protective ground via the PC.
A number of USB devices can have the shield connected together with the

protective ground. Here, the panel’s0 V (GND) is connected to the protective
ground when, for example, a USB memory stick, keyboard or similar device is
plugged in.

If a number of units are connected that have a 0 V a

nd a ground connection, and

these are connected to various grounding poin

ts, there is a substantial risk of

problems. Grounding currents go through com

munication cables, the rear plate

of the controller, and internally in th

e operator panel, and can cause errors.

Use external units to improve communication and achieve galvanic isolation.
Westermo has good industry-standard insulators that are also insulated from the
24 V DC feed.

Note:

It is very important to make sure that the 24 V feed inthe external insulation unit is not
connected to one of the communication outlets. If it does not have 100% insulation
againstthe 24 V feed, disturbances and grounding currents from the 0 V on the 24 V
side will disrup t communication.
Using this type of unit solves one problem but creates a larger problem! A substandard
installationmay work now,butproblemsmay arise when other devices are connected.

Beijer Electronics, MAEN809F

23

Additional Installation Tips

6.7 Cable and Bus Termination RS485

• Use shielded and twisted pair cable. The pair capacitancemay not exceed 52.5

pF/m and area at least 0.25 mm

2

(AWG 24), if you want to use the maximum

transfer distance and maximum transfer speed.

• 0 V,the reference voltage for communication should be included in

the cabling. With two-way communication use two pairs; one pair for
communication andone pair for 0 V.

• The shield must be grounded at one end. The other end is usually grounded,

but with longer distances or when there is a difference in the ground potential,
theshieldshouldbeconnectedtothegroundvia0.1μF/250Vplastic
capacitor to prevent ground current in the braided shield. A number of
manufacturers recommend that the shield be grounded at each node. Various
manufacturers have different systems for bus termination. The RS485
standard does not describe how the “Fail Safe” function would be carried out,
justthatthesystemshouldbeabletohandletheerror.

Depending on the recipients’ design, the bus wires may be on the same level or
require pull-up or pull-down to ensure that no faulty signals are detected when the
bus is in resting mode (all transmitters are disconnected).

1 23

4

+5 V

0 V

1 K

1 K

120 ohm 120 ohm

120 ohm

+5 V

+5 V

0 V
0 V

0 V

0 V

0 V
0 V

1 K

1 K

1 K

1 K

VCC

VCC

(120 ohm)

Inside operator panel

Operator
panel
RS422

CAB8CAB8 Bus

RS485

Shield

Bus termination

5358

2

14

15

6

19

7
8

1
2

3
4

5
6

7

8

2
15

3
16

17
4

14

8
7

55

50

17

1 2 3 4 5 6 7 8

Some (older) operator panels had pull-up and pull-down resistance except for
the actual bus termination at 120 Ω, similar to Westermoand Profibus. See 1 in
drawing above.

Newer panels have another type of recipient, so-called built-in “FailSafe”, where
simple bus termination resistance is sufficient. See 2 in drawing above.

If other nodes on the RS485 network require pull-up and pull-down and the
operator panel is at one end of the loop, one of the following procedures can be
carried out:

• Connect two 1 kΩ / 0.25 W resistors in the 25-pole D-sub contact. See 3 in

drawing above. Set jumper pins 6-19.

• UseCAB8. It offers the option of bus termination with pull-up/-down. It

isalsoeasytoconnectthebuscableviathescrewterminalblock. See4in
drawing above.

Beijer Electronics, MAEN809F

24

Head office

BeijerElectronics AB

Box 426

20124Malmö,Sweden

www.beijere

lectronics.com/ [phone]