The new Ex barrier (Part No.: 804744) for the addressable operating of IQ8Quad Ex (i) detectors is now released and available. It is an exclusive article for ESSER produced article with ATEX and VdS approval.
This new Ex-barrier allows the operation of intrinsically safe IQ8Quad Ex (i) series detectors directly on the esserbus / esserbus PLus (powered loop) with individual addressing in zones 1 and 2.
System requirements:
- max. 4 Ex barriers per loop
- max. 10 detectors IQ8Quad Ex (i) per barrier
- max. 127 IQ8Quad detectors (without signalling) per loop
- Barrier connection to the loop in spur (no transponder needed)
- cable length (spur) within the Ex area max. 400 m per Ex-barrier
- Total loop length (incl. spurs) < 3500m:
- Reduction about 300 m for each connected Ex barrier
- Parameterization of ATEX IQ(Quad Ex (i) detectors is not supported
- Ex barrier receive no short address
- Load factor 3 per Ex barrier (use load factor calculation tool)
- Secure and intrinsically safe areas are electrically isolated form each other by the Ex barrier 804744
- At least one esserbus device with isolator must be installed between two Ex barriers
- VdS compliant installation of Ex barrier in housing Part No. 764752
- Operation on the esserbus and esserbus PLus
- Operation at FACP FlexES control, IQ8Control C/M, 8007, 8008, 8000C/M
- Operation at the detector zones of the extinguishing control computer 8010 series 3 and 4: each group 1x Ex barrier, up to 30 detectors, spur length 400m
For further information, please contact your local sales representative.
