Crowcon Vortex User Manual

Vortex Manual Appendix F
Issue 7 December 2009 81
APPENDICES
Diagram 5B
Fire sensor connection to Vortex via a galvanic isolator (dual).
Connection to Vortex chassis
internal screw terminal
Sensors
example: Apollo
Series 60
9
8
Isolator
5
4
L1
IN
L1
OUT
L2
L1
IN
L1
OUT
L2
Quad
Channel
Input
Module
Vortex
3
2
L1
IN
L1
OUT
L2
L1
IN
L1
OUT
L2
2
1
12
11
Quad
Channel
Input
Module
3
2
example: MTL 5061
HAZARDOUS AREA
SAFE AREA
Wiring Standards
Refer to section 3.6 for general cabling requirements.
In the UK and Europe the following standards apply regarding earthing and screens.
• Refer to BS EN60079-14 section 12.2.4 for requirements on the earthing arrangement of the
barrier earthbar.
• Refer to BS EN60079-14 section 12.2.2.3 regarding the earthing of screens in the hazardous
area.
Where galvanic isolators are used the connection of the 0V line to the chassis (at Vortex TP1 or at the
external power supply if the power supply is non-isolated) and the chassis to earth must be of high
quality, low resistance and high integrity.
A useful text on earthing is:-
"A definitive guide to earthing and bonding in hazardous areas - TP1121" from MTL Instruments
Group PLC, Power Court, Luton, England, LU1 3JJ.
Web address www.mtl-inst.com.
For installing sounders and other signalling devices into hazardous environments refer to the device
manufacturers data.

Crowcon Vortex Specifications

General

Brand	Crowcon
Model	Vortex
Category	Control Panel
Language	English