_______________________________________________________________________________________________________________________________
European Safety Systems Ltd.
Impress House, Mansell Road, Acton, London W3 7QH www.e2s.com Tel: +44 (0)20 8743 8880
Document No. D251-00-601-IS Issue 1 20-09-2022 Sheet 6 of 7
Hazardous Area
IS-mC1
Beacon
-
+
IS-mC1
Sounder
+
-
+
-
Safe Area
-
+
Galvanic
Isolator
Power
Fig 10 Combined Unit wired for simultaneous operation
using one isolator.
Hazardous Area
IS-mC1
Beacon
-
+
IS-mC1
Sounder
+
-
Galvanic
Isolator
-
+
Safe Area
Galvanic
Isolator
-
+
Power
Power
Fig 11 Combined Unit wired for independent operation using
separate isolators
8)
Cable Parameters
The maximum permitted cable parameters are as specified
on the certificate of the Zener barrier or galvanic isolator that
has been selected for the installation. Normally the limits are
not restrictive, but care should be taken not to exceed a
capacitive limit of 83nF for installations when very long cables
are used.
9)
Volume Control
The output level of the IS-mC1 Combined Sounder / Beacon
can be set by adjusting the volume control potentiometer (see
Fig 2).
10)
Maintenance
The sounder should be regularly inspected to ensure that it
has not been damaged. Frequency of inspection depends
upon environmental conditions, but initially we recommend
that this should be done annually.
No attempt should be made to repair a faulty ISmA1
sounder. Suspect sounders must be returned to
European Safety Systems Ltd. or to your local agent for
repair
.
11)
Guarantee
Sounders that fail within the guarantee period should be
returned to European safety Systems Ltd. It is helpful if a
brief description of the fault symptoms is provided.
12)
Customer Comments
European Safety Systems Ltd. is always pleased to receive
comments from customers about our products and services.
All communications are acknowledged and whenever
possible, suggestions are implemented.
