background image

_______________________________________________________________________________________________________________________________ 

European Safety Systems Ltd.

   Impress House, Mansell Road, Acton, London W3 7QH 

    Tel: +44 (0)208 743 8880 

 

 [email protected]      

www.e2s.com

 

 Fax: +44 (0)208 740 4200 

Document No. D202-00-201-IS_Issue_1                   07-05-2017 

 Sheet 8 of 8

 

1

2

3

4

5

6

-

M

/S

 1

+

-

+

M

/S

 2

R

M

/S

 1

Y

B

R

M

/S

 1

Y

B

Y

B

R

1

2

3

4

5

6

-

-

M

/S

 1

Y

M

/S

 2

1

2

3

1

2

3

SE

RIE

S D

EV

IC

E 1

RE

SIS

TO

R

EO

L D

EV

IC

E 1

EZ

1

1

2

3

1

2

3

SE

RIE

S D

EV

IC

E 2

NO

NE

(D

EF

AU

LT

 L

IN

K)

EO

L D

EV

IC

E 2

RE

SIS

TO

R

B

R

M

/S

 1

+

M

/S

 2

+

Ex

a

m

p

le

D

ua

l M

ic

ro

sw

itc

M

ic

ro

sw

itc

M

/S 

W

ith

 EO

Z

en

er

 

W

ith

 Se

rie

R

es

is

to

M

ic

ro

sw

itc

M

/S 

W

ith

 EO

R

es

is

to

W

ith

 n

Se

rie

D

ev

ic

Si

m

pl

ifi

ed

 D

ia

gr

am

F

ul

l C

irc

ui

t D

ia

gr

am

1

A

 -

 C

ir

c

u

it

 a

s

 s

h

o

w

n

 i

n

 U

n

o

p

e

ra

te

d

 c

o

n

d

it

io

n

 

T

er

m

in

al

s+

 (

1)

 & 

-(

3)

 M

/S 

op

en

 a

nd

 +

(4

&

 -

(6

M

/S 

op

en

 

T

er

m

in

al

+

(1

(2

M

/S 

an

+

(4

(5

M

/S

 2

 c

lo

se

1

B

 -

 C

ir

c

u

it

 w

h

e

n

 i

n

 O

p

e

ra

te

d

 c

o

n

d

it

io

n

 

T

er

m

in

al

s+

 (

1)

 & 

(2

M

/S 

op

en

 a

nd

 +

(4

&

 (

5)

 M

/S 

op

en

 

T

er

m

in

al

+

(1

-(

3)

 M

/S 

an

+

(4

-(

6)

 M

/S

 2

 c

lo

se

Summary of Contents for GNExCP7-PT-S

Page 1: ...tings for US Canada The GNExCP7PT callpoints comply with the following standards UL 60079 0 2017 Ed 6 Explosive Atmospheres Part 0 Equipment General requirements UL 60079 1 2015 Ed7 Explosive Atmospheres Part 1 Equipment protection by flameproof enclosures d UL 60079 31 2012 Ed 2 Explosive Atmospheres Part 31 Equipment dust ignition protection by enclosure t The Callpoints are rated as follows Cla...

Page 2: ... C Area Classification Dust Zone 21 Explosive dust air mixture likely to occur in normal operation Zone 22 Explosive dust air mixture not likely to occur in normal operation and if it does 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 90ºC 135 C IP Rating ...

Page 3: ...plosion proof Enclosure Check that the earth bonding 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 e...

Page 4: ... cable glands or blanking plugs The GNExCP7 Call Point range can be supplied with the following types of adapters M20 to NPT M20 to NPT M20 to M25 It is important to note that stopping plugs cannot be fitted onto adapters only directly onto the M20 entries Any other adapters used must be suitably rated and ATEX IECEx certified adapters 10 Cable Connections Electrical Connections are to be made int...

Page 5: ...8Vdc and limited to a maximum total power consumption no greater than 6 224W Min resistor values and current limitations must be observed depending on supply voltage and type of components fitted If a combination of resistors diodes zener diodes is used values for all components must be observed and lowest current limit for either component becomes overall limit Current limitation for units fitted...

Page 6: ...n The plunger will remain in the down latched position until the unit is reset This is done by lifting the plunger back up using the tool reset key provided 14 Maintenance Overhaul Repair Maintenance repair and overhaul of the equipment should only be carried out by suitably qualified personnel in accordance with the current relevant standards To avoid a possible electrostatic charge the unit must...

Page 7: ... 1 M S 2 Optional Single or Double Microswitch Circuit shown wit Unit un operated GNExCP7 UL38 PCB Version M S 1 M S 2 7 8 1 2 3 4 5 6 M S 1 7 8 M S 1 IN M S 1 OUT Series Device if fitted 1 2 3 4 5 6 M S 1 7 8 M S 1 IN M S 1 OUT EOL Device if fitted Alternative Wiring Option 2 Position for Series Device if fitted EOL Device if fitted Series Device if fitted EOL Device if fitted EOL Device if fitte...

Page 8: ...2 3 4 5 6 M S 1 Y M S 2 1 2 3 1 2 3 SERIES DEVICE 1 RESISTOR EOL DEVICE 1 EZ1 1 2 3 1 2 3 SERIES DEVICE 2 NONE DEFAULT LINK EOL DEVICE 2 RESISTOR B R M S 1 M S 2 Example Dual Microswitch Microswitch M S 1 With EOL Zener With Series Resistor Microswitch M S 2 With EOL Resistor With no Series Device Simplified Diagram Full Circuit Diagram 1A Circuit as shown in Unoperated condition Terminals 1 3 M S...

Reviews: