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Control Panel Installation
151430
4-41
4.13.5.2 Constant Power
Use constant power for applications that require a constant auxiliary power source. Power is
always present at constant circuits. You must have backup generator to supply standby power.
See Appendix A.
4.13.5.3 Resettable Power
Resettable power is typically used to power beam detectors, flame detectors and conventional
4-wire smoke detectors. For circuits selected as Resettable, 24-volt power is always present at
the terminals unless a system reset occurs. If a system reset occurs, power is disconnected
from the terminals for 30 seconds, then re-applied. See Table A-4 for compatible four wire
smoke detectors.
4.14 On-Board Relays (Conventional)
The control panel has two built-in programmable relays and a built-in trouble relay. All relays
are Form C rated at 2.5 A @ 24VDC.
Figure 4-41 Location of Conventional Relay Circuits
4.14.1 Trouble Relay
The control panel has a dedicated Form C trouble relay built in. The relay provides a normally
open and a normally closed contact. The trouble relay will deactivate under any trouble
condition.
Note: The NC contact is the relay contact that is closed when the panel has power and there are no trouble con-
ditions.
4.14.2 Programmable Relays
The control panel has two Form C programmable relays built in. Each relay provides a
normally open and a normally closed contact.
To install one or two programmable relays, follow these steps.
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Summary of Contents for Silent Knight IFP-2000 Module 3
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