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Explosion-proof telephone connecting relay mTCR

 

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Description

The telephone connecting relay type

mTCR  is  used  as  a  fixed  device  in

areas  that  may  be  at  risk  due  to

explosive gas or dust atmospheres

and which require devices of device

groups  II  and  III  of  the  categories

2G and 2D. 
The  designated  position  of  normal

use is not mandatory.
The telephone connecting relay type

mTCR  is  implemented  in  the  follo-

wing ignition protection classes: 

Ex e ib mb IIC T4 Gb 

Ex tb IIIC T1 35°C Db

IP66
Temperature range 

-40°C  Ta  +70°C
The telephone connecting relay type

mTCR is intended for connection to

analogue  telephone  networks.  It

can be simply installed parallel to a

telephone. 

The  telephone  connecting  relay

serves  for  call  signalling  through

providing  potential-free  switching

contacts  for  the  connection  of

 signalling  devices.  This  means  for

example  that  up  to  two  external

devices  (e.g.  a  horn  and  a  flash

light)  can  be  switched  on  via  call

signal.  The  call  break  bypass  can

be  individually  adjusted  for  one  of

the connected devices. 
The  installation  regulations  in

accordance with IEC/EN 60079-1 4

as  well  as  the  respective  national

installation regulations must always

be taken into consideration.

Device strutcture

 

The telephone connecting relay type

mTCR  has  an  unpainted  housing

made of electrostatically conductive

compressed material.
The  housing  consists  of  a  box-

 shaped  lower  part  for  receiving  the

electronics  module.  The  electronics

module is firmly cast into the lower

part  of  the  housing  and  cannot  be

exchanged. 

The cover is pressed onto the lower

part  of  the  housing  using  four

screws,  with  a  circumferential  seal

positioned  in  between.  This  forms

the non-intrinsically-safe connection

compartment. 

Intrinsically safe DIP switches

An  intrinsically  safe  4-pole  sliding

switch extends out from the casting

within  the  device  (see  device  over-

view)  for  pre-setting  the  desired

mode of operation. 

Designation 

Type

Article no.

 

Order data

 

 

Telephone connecting relay 

mTCR

410 100 100

 

 

mTCR

mTCR 3.1_E

Summary of Contents for mTCR

Page 1: ...flash light can be switched on via call signal The call break bypass can be individually adjusted for one of the connected devices The installation regulations in accordance with IEC EN 60079 1 4 as well as the respective national installation regulations must always be taken into consideration Device strutcture The telephone connecting relay type mTCR has an unpainted housing made of electrostati...

Page 2: ...he pre installed cable glands only lines are to be used which have a sheathing diameter Ø of 5 5 mm to 1 3 mm since otherwise the IP66 housing protection class is not ensured The tightening torque of these screwed cable connectors is 3 5 Nm The tightening torque of the cover screws is 1 2 Nm Dimensions Maintenance The telephone connecting relay type mTAR contains no parts that need maintaining Mai...

Page 3: ...es may be used 2 Potential free relay contacts not intrinsically safe Terminals No 1 3 or No 4 6 Umax AC 250 V Imax 5 A Pmax 1 00 VA In this case only lines with a core cross section of 1 5 mm to 4 mm may be used Or Umax DC 230 V Imax 0 5 A Pmax 1 00 W In this case only lines with a core cross section of 0 75 mm to 4 mm may be used Or Umax DC 50 V Imax 1 A In this case only lines with a core cross...

Page 4: ...that follows the contact remains closed for the duration according to the following setting call break bypass 1 ON call break bypass approx 1 second 2 ON call break bypass approx 2 seconds 3 ON call break bypass approx 3 seconds 1 to 3 OFF call break bypass approx 9 seconds Combinations are possible 1 2 3 Call break bypass approx ON OFF OFF 1 s OFF ON OFF 2 s OFF OFF ON 3 s OFF ON ON 5 s ON ON ON ...

Page 5: ...vas EN 60079 0 2012 A11 2013 EN 60079 7 2015 EN 60079 11 2012 EN 60079 18 2015 EN 60079 31 2014 Die hier angewandten Normen sind mit dem Normenstand aus der EG Baumusterprüfbescheinigung verglichen worden Es gibt keine Änderungen des anerkannten Standes der Technik in Bezug auf dieses Gerät The edition of applied standards here has been compared with the edition in the EC Type Examination Certific...

Page 6: ...rts may lead to damage and to the warranty expiring 7 The device must be de energised for it to be opened 8 After switching off wait 5 minutes before opening 9 When open no dust may get into the device 1 0 The cover seal necessary for the tightness of the housing as well as the collar at the lower part of the housing may not be damaged during assembly and disassembly 1 1 When reconditioning the eq...

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