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ZONESENSE DH4
OPERATORS MANUAL
5.2
Detector Zones (TB2)
A maximum of 40 x 24volt Optical / Heat detectors, Multi-sensor detector and / or Manual Call Points
mixed in any order can be fitted to each circuit. An output current of 4mA for each circuit with
capacitive EOL is considered to be normal and in a worst case or fault S/C condition each circuit is
current limited to a maximum of 25mA.
The Main Control Board has up to four (4) zone circuits that connect to the 24VDC conventional fire
detectors. The maximum number of detectors and MCP’s that can be supported will be influenced by
the quiescent current draw of the detectors and MCP’s being fitted to the system.
The wiring for each zone circuit should be connected to the relevant terminal block on the Main
Control PCB and if screened the screens terminated at the panel’s base earth post.
Note:
An End of Line EOL 10
F Bi-polar Capacitor must be connected across the terminals
of the last device on each circuit to allow the circuit to be monitored. Zones that are not used must
also have an End of Line capacitor fitted to the terminal block at the panel.
The detector interface is compatible with Apollo conventional detectors (refer to the list of compatible
devices). Reset time is 2 seconds. Each zone circuit will function as follows.
Reported Condition
Comment
Disable
When the zone circuit has been disabled
Fault
Short circuit exists on the zone circuit
Alarm
One or more detectors have been activated
Fault
EOL capacitor is not detected (O/C condition), detector removed
Normal
All detectors are normal and EOL capacitor is connected
5.2.1 Operating
Conditions
All zone fault conditions are non latching hence cleared when the reset control is activated, and are
re-announced within 10 seconds if the fault condition still exists.
Zone alarms are only configured as latching. This means that irrespective of the condition of the
zone itself the alarm condition can only be cleared when the front panel reset control is activated,
Typically MCP’s must be fitted with series resistors (470 or 680 ohm), so as when the MCP is
activated a short circuit is not present on the zone circuit.
The zone circuits can be disabled by using the front panel controls. Once disabled, the zones do not
cause the activation of the alarm outputs, remote relay output or ancillary output.
5 6 7 8
TB1
TB2
+ Z2 -
+ Z3 -
+ Z4 -
+ Z1 -
1 2 3 4
1 2 3
C CC ALT
L1 In
+
L2
-R
APOLLO SERIES 60 STANDARD BASE WIRING
EOL
Earth
L1 Out
L1 In
+
L1 In
+
L1 Out
L1 Out
-
L2
-
L2
-
-R
Earth
-R
Earth
EOL
EOL
EOL
Figure 7: Detector Wiring
