24V Dc Four-Wire Smoke Detector Power - Notifier AM2020 User Manual

Figure 4.6-4 illustrates an MMX-1 monitoring normally open contact fire alarm initiating devices that do not
require power and an MMX-2 monitoring powered two-wire smoke detectors. Refer to Figure 4.6-6 for circuits
using four-wire detectors.
• For additional ratings, refer to Appendix A.
• For connection of the initiating devices, refer to the manufacturer's installation instructions packaged with each device.
• For MMX-2 mount the appropriate ELR across terminals 8 and 9.
• For more information, refer to the MMX-2 Installation Instructions.
SLC Loop Channel A
Supervised and power-limited
LIB SLC Port A ( - )
LIB SLC Port A (+)

24V DC Four-Wire Smoke Detector Power

Up to one amp for four-wire smoke detectors can be drawn from TB3 terminals 1(+) and 2(-). Power is removed
from these terminals during system reset. This 24V DC regulated source is power-limited but must be supervised
via an end-of-line Power Supervision Relay (refer to Figures 4.6-5 and 4.6-6).
Installation 15088: J 10/22/99
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MMX-1
See third bulleted
note above.
MMX-2
+ -
Power-limited
UL-listed 24 VDC Filtered Regulated Power
Limited Power Supply for Fire Protective
Signaling
or
MPS-24A/E, TB3 Terminal 1 (+) and 2 (-)
APS-6R, TB2 Terminal 1 (+) and 2 (-)
Terminal 3 (+) and 4 (-)
NOTES
Heat Detector
+ +
- -
24 VDC Two-wire Smoke Detectors
+ +
- -
Pull Station
+ +
- -
+ +
- -
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