Electrical Ratings; Calculating Scs-8L⁄Sce-8L Current Draw - Honeywell NOTIFIER SCS Series Operation And Installation Manual

SCS-8L⁄SCE-8L Installation
120 ohms if required.
The SCS-8L can be powered by an MPS-24A or other regulated power supply listed for fire protective signaling service. A Power Supervi-
sion Relay is not required for the power connection to the SCS-8L since loss of power at the SCS-8L will result in a communication fault at
the control panel. Use TB3 Terminals 3 (+) and 4(–) from the MPS-24A (do not cut jumper JP5) to power the SCS-8L. The total amount of
current drawn from these terminals cannot exceed the MPS-24A rating in standby or in alarm.

Electrical Ratings

The input voltage and current draw (used for battery calculations) for the SCS-8L⁄SCE-8L during all primary fire, primary non-fire, and sec-
ondary non-fire conditions is listed below:
Calculating SCS-8L⁄SCE-8L Current Draw
[
[
[
[
[
[
The SCS-8L⁄SCE-8L must be considered when calculating primary and secondary power requirements for the FACP or network annunciator
that powers them. Refer to the appropriate manual for the calculation of power requirements for the entire system.
SCS Series Manual — P/N 15712:L 7/18/16
FACP/Network
Annunciator
EIA-485 (–)
EIA-485 (+)
Terminate with
FACP/Network
Annunciator
EIA-485 (–)
EIA-485 (+)
Figure 3.27 Wiring Two or More Smoke Control Stations (SCS-8L)/Annunciators
Input Voltage:
Input Current:
SCS-8L
SCE-8L
Maximum LED Current:
20 mA @ 5 V
50 mA @ 24 V
] # of SCS-8L Modules in FSCS Mode
] # of SCS-8L Modules in HVAC Mode
] # of SCE-8L Modules
] # of LDM-R32 Modules
] # of LEDs on SCS/SCE @ 24 VDC
] # of LEDs on SCS/SCE @ 5 VDC
First SCS-8L or Annunciator _ __ _ _Last SCS-8L
–
–
TB2
+
+
First SCS-8L or Annunciator _ _ _ _Last Annunciator
–
–
TB2 Part #
+ 71244
+
18-32 VDC
FSCS Mode HVAC Mode
33 mA 18 mA
5 mA 5 mA
X 33 mA =
X 18 mA =
X 5 mA =
X 216 mA =
X [ ] mA per LED =
X [ ] mA per LED =[
Total Current Draw =
Dipswitch 8 ON
–
–
TB2
+
+
ELR installed
–
ELR
–
TB2
+
+
[ ] mA
[ ] mA
[ ] mA
[ ] mA
[ ] mA
] / 16.0 = [ ] mA
[ ] mA
The SCS⁄SCE
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