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European Safety Systems Ltd.

Impress House, Mansell Road, Acton, London W3 7QH www.e2s.com Tel: +44 (0)208 743 8880

Document No. D202-00-211-IS Issue 5 16-12-2022 Sheet 7 of 7

15) SIL 2 Reliability Data

Reliability and Functional safety IEC/EN61508 which has
been assessed and is considered suitable for use in low
demand safety function:



Random Hardware Failures and Systematic Failures
(route 2H)



As an unvoted item (i.e. hardware fault tolerance of
0) at SIL 2

The product was assessed against failure modes:



Failure to close a contact when the call point is

struck with specified force



Failure to open a contact when the call point is

struck with specified force



Spurious output despite no input

Integrity in respect of failure to close

SIL 2

System Type

Hardware Fault Tolerance

Safe Failure Fraction (credible claim)

75%

PFD (hazardous failure)

2.3 x 10

-3

Proof Test Interval

Up to 1 year

Содержание GNExCP7-PB-S

Страница 1: ...rters Electromechanical contactors and motorstarters Ed 2 Issue Date 2014 01 04 The GNExCP7 callpoints are rated as follows Class I Div 2 Group ABCD T6 Ta 55 C to 60 C Class II Div 2 Group FG T4 Ta 55 C to 60 C Class III Div 1 2 Ta 55 C to 60 C 2 2 NEC Class Zone ratings US The GNExCP7 callpoints comply with the following standards UL 60079 0 2017 Ed 6 Explosive Atmospheres Part 0 Equipment Genera...

Страница 2: ...s it will only exist for a short time Dust Groupings Group IIIA Combustible Flyings Group IIIB Non conductive Dust Group IIIC Conductive Dust Maximum Surface Temperature for Dust Applications ATEx IECEx UKEX 90ºC NEC CEC 125 C IP Rating IP66 67 to EN IEC60529 and IP6X to EN IEC60079 0 EN IEC60079 31 Equipment Category 2G 2D Equipment Protection Level Gb Gc Db Dc Ambient Temperature Range ATEX IECE...

Страница 3: ...wire between the two castings is secure and the O ring seal is in place When fitting the flameproof cover ensure the cover is sitting flat and correctly positioned on the base Insert the M6 x 50 stainless steel A4 70 Cap Head cover bolts and fully tighten down tightening torque 3 5Nm ensuring no gap is visible between the cover and base of the enclosure The enclosure is non conductive and may gene...

Страница 4: ...CEx UKEX certified adapters 10 Cable Connections Electrical Connections are to be made into the terminal blocks using solid or stranded wire See section 6 of this manual for access to the flameproof enclosure Wires having a cross sectional area between 0 5 mm to 2 5mm AWG 20 14 can be connected to each terminal way If an input and output wire is required the 2 off Live Neutral or terminals can be ...

Страница 5: ...ly twisted by 90 degrees clockwise to position shown and then pressed in There will be a click sound to indicate positive engagement and the plunger will stay in place Fig 6 PB Version Twist and Push Action On PB versions the plunger will remain in position until the unit is reset This is done by pulling the plunger back up to the start position shown in fig 6 Then the plunger is twisted back 90 d...

Страница 6: ...aximum voltage stated must not be exceeded as the internal resistor modules are rated as compliant with Ex d according to the unit voltage If lower value resistors than seen on table are required it may be possible to configure but seek advice from E2S to ensure compliance is still maintained EOL End of line device resistor ExxxR diode ED1 zener ExxxZ Microswitch 1 M S 1 Microswitch 2 M S 2 The un...

Страница 7: ...sidered suitable for use in low demand safety function Random Hardware Failures and Systematic Failures route 2H As an unvoted item i e hardware fault tolerance of 0 at SIL 2 The product was assessed against failure modes Failure to close a contact when the call point is struck with specified force Failure to open a contact when the call point is struck with specified force Spurious output despite...

Страница 8: ... as shown in Operated condition Terminals 4 5 7 8 closed Terminals 4 5 6 open COM N O N C EOL SER NOTE These can be fitted either by customer or pre installed by E2S at point of order When fitting diodes or zener diodes polarity across devices must be observed Resistor polarity is unimportant SERIES EOL Wiring option shown with EOL series devices acting in parallel 3A Circuit as shown in Unoperate...

Страница 9: ...8 1 2 3 4 5 6 7 8 COM N O N C COM N O N C COM N O N C COM N O N C Standard Unit showing positions of optional Series and EOL Devices 1 2 3 4 5 6 M S 1 M S 2 7 8 N O COM 4A Circuit as shown in Unoperated condition Terminals 1 4 M S 1 and 5 8 M S 2 open Terminals 1 3 M S 1 and 5 7 M S 2 closed N C N O COM N C 1 2 3 4 5 6 M S 1 M S 2 7 8 N O COM EOL 4B Circuit as shown in Operated condition Terminals...

Страница 10: ...n in Unoperated condition Terminals 1 4 M S 1 and 5 8 M S 2 open Terminals 1 3 M S 1 and 5 7 M S 2 closed N C N O COM N C 1 2 3 4 5 6 M S 1 M S 2 7 8 N O COM EOL 4B Circuit as shown in Operated condition Terminals 1 4 M S 1 and 5 8 M S 2 closed Terminals 1 3 M S 1 and 5 7 M S 2 open N C N O COM N C SER EOL SER EOL 4A Circuit as shown in Unoperated condition Terminals 1 4 M S 1 and M S 2 open Termi...

Страница 11: ... S 1 M S 2 R B Y R B Y R B Y R B Y 5B Circuit as shown in Operated condition Terminals 1 2 M S 1 and 4 5 M S 2 open Terminals 1 3 M S 1 and 4 6 M S 2 closed R N POTTS Optional Single or Double Microswitch Circuit shown with Double Microswitch Unit un operated GNExCP7 PCB Version Devices selected only as example On M S 1 Series resistor and EOL Zener diode On M S 2 EOL resistor with no series devic...

Страница 12: ...quipment II 2G Ex d IIC T6 T5 Gb II 2D Ex tb IIIC T90 C T80 C Db Standards applied EN 60079 0 2018 EN 60079 1 2014 EN 60079 31 2014 IP6X Dust Protection to EN60079 0 EN60079 31 Directive 2014 30 EU Electromagnetic Compatibility Directive EMC Standards applied EN 61000 6 1 2007 EN 61000 6 2 2005 EN 61000 6 3 2007 A1 2011 AC 2012 EN 61000 6 4 2007 A1 2011 Directive 2011 65 EU Restriction of the use ...

Страница 13: ... d IIC T6 T5 Gb II 2D Ex tb IIIC T90 C T80 C Db Standards applied EN 60079 0 2018 EN 60079 1 2014 EN 60079 31 2014 IP6X Dust Protection to EN60079 0 EN60079 31 Directive 2014 30 EU Electromagnetic Compatibility Directive EMC Standards applied EN 61000 6 1 2007 EN 61000 6 2 2005 EN 61000 6 3 2007 A1 2011 AC 2012 EN 61000 6 4 2007 A1 2011 Directive 2011 65 EU Restriction of the use of certain hazard...

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