Notifier AM2020 User Manual page 79

SLC Channel A
-
+
RA400Z
UL listed 24 VDC Regulated Power
Limited Power Supply for Fire Protective
MPS-24A/E, TB3 Terminal 1 (+) and 2 (-)
APS-6R, TB2 Terminal 1 (+) and 2 (-)
Installation 15088: J 10/22/99
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Software Type ID "SCON"
MMX-1
Software Type ID"PWRC"
CMX
Break tabs
The CMX resets power to the
detectors. It is not needed for
power supplies using
resettable smoke detector
power.
The RA400Z annunciates
the reset of smoke
detector power. It is
optional.
WARNING!
Observe proper polarity
on the RA400Z or device
will be damaged.
- + Power-limited
Signaling
or
Terminal 3 (+) and 4 (-
)
All connections are supervised and power limited
Red
Black
Note: contacts shown
IDC(+)
IDC(-)
24V DC (+)
Common (-)
UL listed 24V DC
Four-Wire Smoke Detectors
IDC(+)
IDC(-)
24V DC (+)
Common (-)
NOTES
• The power supervision relay coil leads must be
connected to the last detector base 24V screw
terminal.
• See Appendix A for additional ratings.
• The CMX shown (when properly programmed)
performs the reset function for all smoke
detectors connected to the IDC. See Section 4.4.
• Maximum of 30 PWRC modules per SLC.
• Calculation of the maximum allowable resistance
in the 24V DC smoke detector Power wiring:
Rmax =
(N)(Is) + (NA)(Ia) + (Ir)
where:
Rmax - is the maximum resistance of the 24V
wires.
Vom - is the minimum operating voltage of the
detector or end-of-line relay, whichever is
greater, in volts.
N - is the total number of detectors on the
supply 24V circuit.
Is - is the detector current in non-fire alarm.
- is the number of detectors on the 24V
NA
power circuit which must function at the
same time in alarm.
Ia - is the detector current in alarm.
- is the end-of-line relay current.
Ir
Listed
Power
Supervision
Relay
in the energized
condition.
(20.6 - Vom)
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