SilentKnight SKE-450 Voice Evacuation Control Panel - Manual (Page 38)

SKE-Series Voice Evacuation System Installation/Operation Manual
5-4 151267
5.1.7 All Call Switch
The All Call Switch manually overrides the system message, using the microphone, to all
zones in the system.
5.1.8 Zone Supervision Selectors
The zone supervision selector selects how the speaker circuit will be supervised. Speaker
circuits can be Class B (Style Y) or Class A (Style Z) supervised depending on how they are
connected to the control panel. (See Section 5.4 for wiring configurations.)
Figure 5-2 Speaker circuit Supervision Selections
5.1.9 LED Descriptions
The SKE-ZN4 has two LEDs for each zone, an Active and a Trouble LED. The Active LED
(Red) indicates that the zone is activated when it is ON. The Trouble LED (Yellow), when on,
indicates the 15 k
Ω end of line resistor on the speaker circuit is missing.
5.2 SKE-ZN4 Specifications
Circuit Rating
Operating Voltage: 24 VDC
Current Draw:
Standby: 45 mA
Alarm: All channels active 250 mA
Humidity 93% non-condensing max.