6.0 Wiring
Table above indicates markings inside the base of the unit for wiring connec-
tions. Each unit must be powered via an approved Zener Barrier or Galvanic
Isolator with entity perameters that do no exceed:
Uo:28v, Io: 93mA, Po:660mW, Ci:0, Li:0
The combined Sounder Beacon can be operated in 3 ways, Sounder only,
Beacon only or Sounder Beacon combined. This is shown in the table below:
Combined Sounder and Beacon Alarm
Before final installation of the IS-SB-02 head unit onto the installed base, the
alarm tone and light output must be set (see page 5).
To activate both Sounder and Beacon together, the negative supplies need to
be connected together via a wire link (not supplied) in the base of the unit (see
picture below).
This wire must conform to correct standards as required by the Intrinsically
Safe installation (EN 60079-0:2012 + A11:2013, EN 60079-11:2012, EN
50303:2000), minimum wire gauge of 24AWG copper wire required.
6
Line
Terminal Marking
Common Positive Supply IN
(3) IN+
Sounder Negative Supply
(2) -
Beacon Negative Supply
(1) ♫/☼
Line
Terminal Marking
Beacon
Active
Sounder
Active
Both
Active
Common Positive
Supply IN (Uo)
(3) IN+
+
+
+
Sounder
Negative Supply
(2) -
-
-
Beacon
Negative Supply
(1) ♫/☼
-
-
