Installation Instructions

14
Galaxy 2 Series Installation Manual
Figure 9. Keyswitch/Push-Set Zone wiring
Wiring Zones
Keyswitch
zone
Push-set
zone
1k to unset, 2k to set
(only for a * keyswitch zone)
1k
1%
Open - Closed
1k
1k
1k
1k
100m
OR
Closed - Open
1%
1%
1%
1%
Wiring Zones
The zones on Galaxy 2 Series panels are defaulted as double balanced. Each zone is 1 kΩ closed and 2 kΩ
open. The transition from 1 to 2 kΩ generates an alarm condition. Refer to Table 2 for details of the zone
resistance and resulting conditions.
NOTE: The circuit debounce time (the period the zone must remain open to register a change in condition) is
300 milliseconds by default.
Table 2. Zone Resistance
Multiple detectors can be wired into a single zone. The maximum number of detectors that can be connected
to a single zone is 10.
Wiring Keyswitches
The transition from 1 kΩ to 2 kΩ initiates the setting procedure of an unset system, the transition from 2 kΩ to
1 kΩ instantly unsets a set system. If the system is already set, then the transition from 1 kΩ to 2 kΩ has no
effect. If the system is unset, the transition from 2 kΩ to 1 kΩ has no effect.
The wiring of the keyswitch is shown in Figure 9.
Wiring Push-Set Buttons
Zones programmed as Push-Set (terminator) buttons can be open going closed (2 kΩ to 1 kΩ) or closed
going open (1 kΩ to 2 kΩ). The first activation of the terminator button initialises its status to the system.
NOTE: For push-set zones to operate, parameter 51.08, Exit Terminate, must be set up.
The wiring of the terminator is shown in the following Figure .
Zone Resistance (ohms) Condition
0-700 Tamper Short Circuit (TAMP S/C)
700-1500 Normal (CLOSED)
1500-11000 Alarm (Open) (OPEN)
11000-infinity Tamper Open Circuit (TAMP O/C)