SICK GMS840 Operating instructions

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MMMADDENDUM TO OPERATING INSTRUCTIONS
ADDENDUM TO OPERATING INSTRUCTIONS
GMS840
Enclosure for GMS800 Series
Description, Installation, Technical Data
Title Page

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Described product
Product name: GMS840
Variants: GMS840 (standard)
GMS841 (ATEX/ IECEx)
GMS842 (CCSAUS)
Manufacturer
SICK AG
Erwin-Sick-Str. 1 · 79183 Waldkirch · Germany
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
Place of manufacture
SICK AG
Poppenbütteler Bogen 9b · 22399 Hamburg · Germany
Legal information
This work is protected by copyright. All rights derived from the copyright shall be
reserved for SICK AG. Reproduction of this document or parts of this document
is only permissible within the limits of the legal determination of Copyright Law.
Any modification, shortening or translation of this document is prohibited without the
express written permission of SICK AG.
The trademarks stated in this document are the property of their respective owner.
© SICK AG. All rights reserved.
Original document
This document is an original document of SICK AG.
CUS
®

CONTENTS
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1 For your safety............................................................................................ 5
1.1 Symbols and document conventions ............................................................. 5
1.1.1 Warning symbols ............................................................................ 5
1.1.2 Warning levels and signal words.................................................... 5
1.1.3 Information symbols ....................................................................... 6
1.2 Responsibility of user...................................................................................... 6
1.3 Scope of application ....................................................................................... 7
1.3.1 Principal application limitations..................................................... 7
1.4 Main safety information.................................................................................. 7
1.5 Additional documentation/information.......................................................... 7
2 Product description ................................................................................... 9
2.1 Product identification......................................................................................9
2.1.1 Type plate........................................................................................ 9
2.2 Product description.......................................................................................10
2.2.1 Product characteristics.................................................................10
2.2.2 Options ..........................................................................................10
2.3 Opening the enclosure cover........................................................................11
2.3.1 Safety measures before opening the enclosure .........................11
2.3.2 Opening the enclosure .................................................................13
3 Installation ................................................................................................14
3.1 Safety during transport and mounting .........................................................14
3.1.1 For GMS841 (ATEX/ IECEx) and GMS842 (CCSAUS) ....................14
3.2 Scope of delivery ...........................................................................................14
3.3 Mounting .......................................................................................................15
3.3.1 Ensuring ambient conditions .......................................................15
3.3.2 Fitting the enclosure.....................................................................15
3.4 Special protective measures (as required) ..................................................15
3.4.1 Protecting against dangerous sample gases ..............................15
3.4.2 Protecting against corrosive atmospheres ..................................15
3.4.3 For GMS841 (ATEX/ IECEx) and GMS842 (CCSAUS) ....................16
3.5 Gas connections............................................................................................16
3.5.1 Sample gas inlet ...........................................................................16
3.5.2 Sample gas outlet.........................................................................16
3.5.3 Feeding purge gas to an Analyzer module (option).....................16
3.5.4 Feeding purge gas for the enclosure (option) .............................16
3.6 Electrical connections...................................................................................17
3.6.1 Opening the enclosure .................................................................17
3.6.2 Connecting the power connection ...............................................18
3.6.3 Connecting the signal connections (as required)........................19
3.6.3.1 I/O module (standard) ..............................................19
3.6.3.2 Intrinsically safe signal connections (option) ..........19
3.6.4 Connecting the interfaces (as required) .....................................19

CONTENTS
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3.7 Intrinsically safe signal connections (option) .............................................. 20
3.7.1 Technical design........................................................................... 20
3.7.2 Installation information................................................................ 21
3.7.3 Limit values for intrinsically safe signal connections ................. 21
3.8 Closing the enclosure tight........................................................................... 21
4 Commissioning of GMS841 (ATEX/ IECEx) and GMS842 (CCSAUS) .22
5 Maintenance............................................................................................. 23
5.1 Safety information ........................................................................................ 23
5.2 Maintenance interval.................................................................................... 23
5.3 Maintenance work on the enclosure ........................................................... 23
5.4 Cleaning of the enclosure ............................................................................ 23
5.5 Leak tightness checks.................................................................................. 24
5.5.1 Checking the leak tightness of sample gas lines ...................... 24
5.5.2 Checking the leak tightness of purge gas paths......................... 24
6 Shutdown .................................................................................................. 25
6.1 Preparations for shutdown........................................................................... 25
6.2 Before shutdown........................................................................................... 25
6.3 Shutdown with GMS841 (ATEX/ IECEx) and GMS842 (CCSAUS)................. 25
6.3.1 Shipping for repair........................................................................ 25
7 Compliances and standards .................................................................. 26
8 Technical data.......................................................................................... 27
8.1 Dimensions, fitting position and connections ............................................. 27
8.1.1 Dimensions................................................................................... 27
8.1.2 Torques ......................................................................................... 28
8.1.3 Position of connections................................................................ 29
8.2 Enclosure specifications ............................................................................. 30
8.3 Ambient conditions....................................................................................... 30
8.4 Gas connections ........................................................................................... 30
8.5 Power connection ......................................................................................... 31
8.6 Electrical safety/ EMC .................................................................................. 32
8.7 Technical data for intrinsically safe signal connections ............................. 32
8.7.1 Limit values for intrinsically safe analog outputs ...................... 32
8.7.2 Limit values for intrinsically safe digital outputs ....................... 32

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FOR YOUR SAFETY 1
1Foryoursafety
1.1 Symbols and document conventions
1.1.1 Warning symbols
1.1.2 Warning levels and signal words
DANGER
Risk or hazardous situation which will result in severe personal injury or death.
WARNING
Risk or hazardous situation which could result in severe personal injury or death.
CAUTION
Hazard or unsafe practice which could result in less severe or minor injuries.
NOTICE
Hazard which could result in property damage.
Symbol Significance
Hazard (general)
Hazard by voltage
Hazard in potentially explosive atmospheres
Hazard by high temperature or hot surfaces
Hazard by explosive substances/mixtures
Hazard by toxic substances
Hazard for the environment/nature/organic life

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1FOR YOUR SAFETY
1.1.3 Information symbols
1.2 Responsibility of user
●Make sure the user has read and understood this Addendum to the Operating
Instructions, the Operating Instructions of the device and the safety instructions.
●Observe all safety instructions.
●If there is something you do not understand: Contact SICK Customer Service.
●This Manual presumes that the device has been delivered as specified during project
planning (i.e., based on the SICK application questionnaire) and the relevant delivery
state of the device (see delivered System Documentation).
– Contact SICK Customer Service if you are not sure whether the device corresponds to
the state defined during project planning or to the delivered system documentation.
●Only use the device as described in “Intended use”;
the manufacturer assumes no responsibility for any other use.
●Maintenance work should be performed as prescribed in this Manual.
●Do not attempt any work on or repairs to the device unless described in this Manual.
●Do not remove, add or change any components in or on the device unless such changes
are officially allowed and specified by the manufacturer.
Failure to observe these precautions could result in:
– voiding the manufacturer's warranty
– the device could become dangerous
– the approval for use in potentially explosive atmospheres is no longer valid
Symbol Significance
Information on product condition with regard to protection against explosions (general)
Note on product properties with regard to Explosion Protection Directive
ATEX 2014/34/EU
Important technical information for this product
Important information on electric or electronic functions

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FOR YOUR SAFETY 1
1.3 Scope of application
1.3.1 Principal application limitations
●Do not use GMS840 and GMS842 to measure combustible gases when no additional
safety precautions have been taken (see Info box).
●Do not use GMS840 in potentially explosive atmospheres.
●Only use GMS841 (ATEX/IECEx) and/or GMS842 (cCSAUS) in the Ex zones stated on the
type plate.
●GMS841 is not intended for measurement of combustible gases.
●Do not use GMS840, GMS841 and GMS842 to measure explosive gas mixtures.
1.4 Main safety information
Only for GMS841 (ATEX/ IECEx)
Dangerous sample gases
In hazardous situations
▸Actuate the emergency-stop switch or switch the main switch of the host system off.
1.5 Additional documentation/information
This document supplements the Operating Instructions “GMS800 Series”. It extends these
Operating Instructions with technical information on the Enclosures GMS84x.
▸Observe the Operating Instructions delivered with the “GMS800 Series”.
▸If these Operating Instructions are not available in your language: Pay attention to the
delivered safety information document (in 24 official EU languages). This safety
information document is a summary of the safety information and warnings of the
GMS800 series and of the enclosure variants.
If the sample gas is combustible or can create a flammable gas mixture with air, there
can be a risk of explosions when a defect causes a leak in internal gas paths. Therefore,
applications with combustible sample gas require additional safety precautions (e.g.
permanent enclosure purging with a protective gas, warning devices).
WARNING: Risk of explosions in potentially explosive atmospheres
▸Do not open the enclosure when an explosive atmosphere is present.
▸If the enclosure has been opened: Check the enclosure for leak tightness before
restarting (page 22).
WARNING: Possibility of explosive gas in the enclosure
The enclosure is not gas-tight.
This means: Explosive gas can accumulate in the enclosure when used in Ex zones.
▸Be aware that after use in Ex zones, explosive gas can still be in the enclosure
outside of the Ex zone.
WARNING: Risk of explosion during transport and mounting
▸Do not transport the device in potentially explosive atmospheres.
▸Do not carry out work on the device in potentially explosive atmospheres.
▸Only use tools approved for Ex zones.
WARNING: Risk of explosion due to combustible gases
▸Do not use the enclosure GMS84x to measure combustible gases when no
additional safety precautions have been taken.
The “GMS800 Series” Operating Instructions also specify all further documents
belonging to the individual device.

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1FOR YOUR SAFETY
Other documents delivered
NOTE:
▸Pay primary attention to any individual information provided.
Operating Instructions of the safety barriers [1]
[1] Only for versions with intrinsically safe signal
connections, see “Intrinsically safe signal
connections (option)”, page 20.
Operating Instructions RJ45 connector

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PRODUCT DESCRIPTION 2
2 Product description
2.1 Product identification
2.1.1 Type plate
▸Observe the product identification on the type plate.
The type plate is located on the right side of the enclosure.
The product name of the enclosure is shown on the type plate.
The following type plates serve as examples:
Type plate GMS840 (standard)
Type plate GMS841 (ATEX/ IECEx)
Type plate GMS842 (CCSAUS)
Product name Characteristic
GMS840 (standard) ---
GMS842 (CCSAUS) CCSAUS 500 (Class I, DIV2, Grp.A,B,C,D;T4)
CCSAUS 505 (Class I, Zone 2, Ex nA nC IIC T4 Gc)
Ex nA nC IIC T4 Gc
GMS841 (ATEX/ IECEx) Ex nA nC IIC T4 Gc
Ex nA nC [ia Ga] IIC t4 Gc (intrinsically safe)

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2PRODUCT DESCRIPTION
2.2 Product description
Fig. 1: GMS840
2.2.1 Product characteristics
Common characteristics
●Closed sheet steel enclosure for wall mounting
●For use indoors
●Degree of protection IP 66
●If required, the enclosure can be purged with inert gas; openings for purge gas
connections are available (standard: Closed with sealing plugs, option: Screw fittings for
hose or pipe connection)
2.2.2 Options
●Intrinsically safe signal connections
●Gas connections (alternative) for
–Spangas
– Second sample gas path
– Purge gas for an Analyzer module
●Purge gas connections for the enclosure

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PRODUCT DESCRIPTION 2
2.3 Opening the enclosure cover
2.3.1 Safety measures before opening the enclosure
Only open the enclosure in a dry, dust-free room.
For GMS841 (ATEX/ IECEx) and GMS842 (CCSAUS):
CAUTION: Risk of burns on hot components
Hot components are marked with a label (see left).
▸Do not touch hot components
WARNING: Health risks/accident risks
If
– the GMS84x measures toxic, dangerous or combustible gases
– the GMS84x is in a potentially explosive atmosphere
– it is suspected that the internal gas paths have a leak
then carry out the following measures before opening the enclosure:
1Interrupt every gas feed to the GMS84x apart from the purge gas feed (when
present).
2Switch the power supply to the GMS84x off at an external source.
3In potentially explosive atmospheres (only GMS841 (ATEX/ IECEx) and GMS842
(CCSAUS)): Disconnect the GMS84x from all external voltages (e.g. signal lines).
Exception: Connections to intrinsically safe power circuits can remain connected.
4If enclosure purging is installed: Wait for an appropriate time so that the enclosure is
purged with inert gas.
5If necessary, take protective measures against escaping gases (e.g. breathing
protection, suctioning off).
▸Some components are hot: Before touching components: Observe the cooling time.
▸Only open the enclosure when it is safe to do so.
WARNING: Risk of injury through contact with toxic sample gas
Accumulated sample gas can escape when the enclosure is opened. Depending on the
quantity and composition of the gas, this can cause serious injuries when the
respiratory system and the skin have direct contact with the gas.
▸Always switch the device off before opening the enclosure.
▸Perform all steps of the shutdown procedure, see “Shutdown procedure”, page 25.
▸Wear the specified protective clothing.
WARNING: Risk of explosion when the enclosure is opened incorrectly
▸Do not open the enclosure when an explosive atmosphere is present.
WARNING: Possibility of explosive gas in the enclosure
The enclosure is not gas-tight.
This means: Explosive gas can accumulate in the enclosure when used in Ex zones.
▸Be aware that after use in Ex zones, explosive gas can still be in the enclosure
outside of the Ex zone.
WARNING: Risk of explosion when the grounding cable to the enclosure cover
is defective
▸When the grounding cable has been put under traction during opening of the
enclosure cover or the cover has been dropped: Check the grounding cable for
damage and replace if necessary.

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2PRODUCT DESCRIPTION
Electrical safety
NOTE:
Electrostatic discharges can severely damage electronic components.
▸Before touching electrical connections and internal components: Ground your body
and tools used to discharge electrostatic charges.
Recommended method:
▸If the protective conductor is connected: Touch a blank metal part of the enclosure.
▸Otherwise: Touch a different blank metal surface that is connected to the protective
conductor or has safe contact to the grounding.

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PRODUCT DESCRIPTION 2
2.3.2 Opening the enclosure
Enclosure with hinges (opening to the top):
1Loosen the lock.
2Lift the cover on both sides with the whole palm of your hand and fold away upwards.
Fig. 2: Opening to the top
Enclosure without hinges (opening to the bottom)
1Loosen 4 M5 screws (the screws are connected to the enclosure to prevent the risk of
loss).
2Hold the cover on both sides and pull forwards.
3Hinge the cover in underneath in the enclosure tabs (the cover has appropriate
recesses).
Fig. 3: Opening to the bottom
Hinges on enclosure cover
●If the cover is attached with hinges, it can be swiveled up.
●The hinges can be removed.
●Without hinges, the cover can only be removed downwards and then hung in.
NOTICE:
Do not crimp the LAN cable and/or grounding cable.
▸Lay the cable into the provided guide.
1.
2.
3.

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3INSTALLATION
3 Installation
3.1 Safety during transport and mounting
3.1.1 For GMS841 (ATEX/ IECEx) and GMS842 (CCSAUS)
3.2 Scope of delivery
Please see the delivery documents for the scope of delivery.
CAUTION: Risk of injury
▸Consider the weight of the enclosure before lifting, see “Enclosure specifications”,
page 30.
▸Call in further personnel as assistants as required.
CAUTION: Risk of injury
There is a risk of injuries should the enclosure drop down due to the weight of the device
and through hard, protruding enclosure parts.
During transport and mounting:
▸Wear safety shoes. Wear non-slip gloves.
▸Handle the device carefully and safely. Secure during transport. Avoid falls and
collisions.
▸Call in further personnel as assistants as required.
NOTE: Risk of damage
▸Do not use gas connections and cable inlets as lifting points.
WARNING: Risk of explosion through sparks
▸Do not carry out work on the device in potentially explosive atmospheres.
▸Do not unpack the device in potentially explosive atmospheres.
▸Only use an adequate packaging for transportation of the device.
▸Only use tools approved for Ex zones.

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INSTALLATION 3
3.3 Mounting
3.3.1 Ensuring ambient conditions
Vibration
▸Protect the device against heavy jolts and vibrations. Limit values, see “Ambient
conditions”, page 30.
Temperature
▸Avoid enclosure exposure to direct sunlight.
▸Maintain the allowable ambient temperature during operation, see “Ambient conditions”,
page 30.
Moisture
▸Choose a dry installation location free from frost.
▸Prevent moisture condensation – inside the device as well.
▸Maintain the allowable air humidity, see “Ambient conditions”, page 30.
3.3.2 Fitting the enclosure
▸This enclosure is only suitable for attachment on a wall.
▸Secure the enclosure on a wall that can safely carry the weight of the enclosure.
3.4 Special protective measures (as required)
3.4.1 Protecting against dangerous sample gases
If the sample gas can be dangerous to health and/or corrosive:
▸Make sure no dangerous situations can arise should a gas leak occur.
▸Check:
– Whether a gas detector must be installed at the installation location.
– Whether the enclosure must be purged continuously with a neutral gas during
operation (with monitoring the discharged purge gas as required).
Install appropriate additional devices as necessary.
▸Check gas paths regularly for leak tightness.
3.4.2 Protecting against corrosive atmospheres
When the atmosphere at the installation location can contain corrosive gases:
▸Install the enclosure of the GMS84x in an outer housing (e.g. closed cabinet). Purge the
outer housing with an inert gas.
Dimensions, see “Dimensions, fitting position and connections”, page 27.
CAUTION: Accident risk through inadequate fastening of the enclosure
▸Observe the weight of the enclosure of approx. 30 kg.
▸Observe the sufficient carrying capacity of the wall or the rack.
Use adequate “Cavity dowels metal” with an allowable load of at least 30 kg for
gypsum plasterboard walls.

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3INSTALLATION
3.4.3 For GMS841 (ATEX/ IECEx) and GMS842 (CCSAUS)
3.5 Gas connections
3.5.1 Sample gas inlet
General notes
Information and safety information on sample gas connections
▸See Operating Instructions “GMS800 Series”.
▸See Addenda to the Operating Instructions for the fitted Analyzer modules.
3.5.2 Sample gas outlet
3.5.3 Feeding purge gas to an Analyzer module (option)
Only valid for versions with purge gas connections for an Analyzer module.
▸Feed and discharge the necessary purge gas via the purge gas connections “Purge” as
described in the Addendum to the Operating Instructions of the Analyzer module, see
“Dimensions, fitting position and connections”, page 27.
▸Feed and channel off purge gas so that the purge gas pressure in the line is not above
30 mbar.
▸Use nitrogen (techn.) as inert gas.
3.5.4 Feeding purge gas for the enclosure (option)
▸Feed the desired inert gas through the enclosure (see “Dimensions, fitting position and
connections”, page 27) via the purge gas connections.
WARNING: Risk of explosion
▸Mounting may only be carried out by trained personnel.
▸Do not carry out work on the device in potentially explosive atmospheres.
▸Only use tools approved for Ex zones.
▸If necessary: Install lightning protection.
Gas connections, see “Dimensions, fitting position and connections”, page 27
WARNING: Risk of injury through contact with sample gas emerging
uncontrolled when the sample gas discharge is incorrectly dimensioned
Depending on the composition of the sample gas, a leak of the exhaust gas line or
improper design of the exit point of the gases can cause serious injuries to the skin and
respiratory system. For safe disposal of the sample gases:
▸Design and install the exhaust gas line according to the mandatory occupational
safety regulations in the plant.
▸Determine the correct length of the exhaust gas hose and the maximum pressure
head during the design of the exhaust gas lines.
▸Screw the connections of the exhaust gas line tight, e.g. using 6 mm Swagelok
screws.
▸Regularly check the exhaust gas line for leaks.
CAUTION: Safety risk
▸Keep unused purge gas connections closed with the delivered sealing plugs.
Otherwise the specified enclosure degree of protection is not ensured.

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INSTALLATION 3
3.6 Electrical connections
3.6.1 Opening the enclosure
▸Open the enclosure, see “Opening the enclosure cover”, page 11.
Fig. 4: Electrical connections
To connect the electric lines:
▸Press on the power connection terminal with a screwdriver and insert the line.
WARNING: Observe the safety information
Observe the safety information in Chapter “Opening the enclosure cover”, page 11.
Power connection terminals
I/O module (signal connections)
The cable inlets are suitable for cables with outer diameter 7 ...12 mm

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3INSTALLATION
3.6.2 Connecting the power connection
Safety information and standards
▸Standards to be applied: IEC 60947-1 and IEC 60947-3
▸Check whether the available power voltage matches the type plate specifications. If this
is not the case: Do not connect the device.
Installing an external power fuse
Install an external circuit breaker in the main power supply.
●Fuse rating and trigger characteristic:
– Power voltage 115 V AC circuit breaker for 16 Ampere characteristic C
– Power voltage 230 V AC circuit breaker for 16 Ampere characteristic B
Installing an external main power switch
▸Install a power disconnector switch close to the device (all poles).
▸Mark the power disconnector switch clearly.
Install the power connection
1Open the enclosure cover.
2Insert the power cable through a cable inlet. Use an EMC connection.
3Lay a shielding on the EMC connection.
4Connect the power cable to the power connection terminals, see “Electrical
connections”, page 17.
5Close the cable gland on the cable.
6Connect the external PA connection with the same electrical potential as the internal PE
connection.
WARNING: Health risk
Ensure electrical safety:
▸Only connect the device to a main power supply which has a functional protective
conductor (PE to PA, see “Position of connections”, page 29).
▸Only start the device when a correct protective conductor is installed.
▸Do not disconnect protective conductor connections.
Internal power fuses:
●Primary: Fuse in internal power supply unit (6.3 A)
If this fuse triggers: Replace the power supply unit.
●Secondary: Fusible cutout on the internal “distribution board” (on CANopen
connections);
if this fuse triggers: Clear the malfunction cause and replace the fusible cutout with
an identical type (F10AH250V).
WARNING: Health risk
▸Before installing the power cable: Make sure the external main power supply is
switched off.
Technical requirements to the power cable, see “Power connection”, page 31.
WARNING: Risk of explosion of GMS841 (ATEX/ IECEx) and GMS842 (CCSAUS)
▸Only use “identical” material suitable for PA connections.
▸Observe the commissioning before switching on the power supply: see
“Commissioning of GMS841 (ATEX/ IECEx) and GMS842 (CCSAUS)”, page 22.

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INSTALLATION 3
3.6.3 Connecting the signal connections (as required)
3.6.3.1 I/O module (standard)
The standard version has a built-in I/O module. A second I/O module can be fitted (option).
▸Position of signal connections, see “Electrical connections”, page 17.
▸Function of signal connections →“I/O module” Addendum to Operating Instructions.
▸The cables have to be approved for the relevant application.
– Only use sufficiently screened cables.
– The shielding braid has to end in the cable duct.
– Shorten the shielding braid accordingly.
Fig. 5: Shielding braid
3.6.3.2 Intrinsically safe signal connections (option)
see “Intrinsically safe signal connections (option)”, page 20.
3.6.4 Connecting the interfaces (as required)
To use an interface:
▸Connect the interface cable to the corresponding interface inside the enclosure, see
“Electrical connections”, page 17.
Function of interfaces →Operating Instructions “GMS800 Series”.

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3INSTALLATION
3.7 Intrinsically safe signal connections (option)
3.7.1 Technical design
When the GMS841 (ATEX/ IECEx) is used in Ex zones, the analog outputs, digital inputs and
outputs have to be realized as intrinsically safe signal connections when the signals are
used in an Ex zone.
Additional modules are fitted for this purpose (safety barriers). All intrinsically safe
connections are configured according to customer requirements.
●Terminal assignment →Individual information delivered with the device
●Technical information on intrinsically safe signal connections and switching, see
delivered Operating Instructions of the safety barriers.
Fig. 6: Safety barriers
Location of safety barriers
Intrinsically safe values, see “Technical data for intrinsically safe signal connections”,
page 32.