Table of Contents
Advertisement
Annunciator Power Requirements & Electrical Ratings
4.6 Annunciator Power Requirements & Electrical Ratings
Annunciators draw their power from the control panel and must be considered when calculating the primary and secondary power supply
requirements for the system. Each annunciator module is accounted for in the power calculations outlined in the respective installation man-
ual. However, if the current draw dedicated to the annunciators must be calculated as a separate figure, use the equations in Table 4.1.
Electrical Ratings
•
Input Voltage: 24 VDC (must be power-limited and non-resettable).
Use a regulated, power-limited, compatible power supply that is UL/ULC-Listed for Fire Protective Signaling use.
•
Data Communications Port: EIA-485 operating at 20 Kbps (must be power-limited).
Non-Fire Alarm Status A: On-line LED is flashing; all other LEDs are off
Number of ACM-24AT/ACM-48A modules
Number of AEM-24AT/AEM-48A modules
Number of ACM-16AT/ACM-32A modules
Number of AEM-16AT/AEM-32A modules
Non-Fire Alarm Status B: On-line LED is on; other LEDs are also on
Number of ACM-24AT/ACM-48A modules
assumed to have points active simultaneously
Number of AEM-24AT/AEM-48A modules
assumed to have points active simultaneously
Number of ACM-16AT/ACM-32A or AEM-16AT/AEM-32A
modules assumed to have points active simultaneously
Total Annunciator Standby Current
Fire Alarm Status (All LEDs are assumed to be on)
Number of ACM-24AT/ACM-48A modules
assumed to be in alarm simultaneously
Number of AEM-24AT/AEM-48A modules
assumed to be in alarm simultaneously
Number of ACM-16AT/ACM-32A or AEM-16AT/AEM-32A
modules
Total Annunciator Fire-Alarm Current
Total Annunciator Standby Current + Total Annunciator Fire-Alarm Current
1
The 0.040 amps can be reduced to 0.030 for ACM-16AT/ACM-32A modules with Piezo Disable or Flash Inhibit
modes selected.
2
This entry assumes that all LEDs are lit simultaneously. When the alarm system specification permits, calculations
can be based on a 10% alarm loading capacity. For 10% capacity, enter 10% of the total number of ACM and AEM
modules multiplied by the number of remote annunciator locations, but do not enter less than one.
ACS Manual — P/N 15842:N3 5/4/2022
assumed to be in alarm simultaneously
Table 4.1 Current Draw Calculations
[________]
X
0.016
[________]
X
0.002
[________]
X
0.040
[________]
X
0.002
[________]
X
0.070
[________]
X
0.056
[________]
X
0.018
2
[________]
X
0.070
[________]
X
0.056
[________]
X
0.018
Design Considerations
= [_________] amps
= [_________] amps
1
= [_________] amps
= [_________] amps
= [_________] amps
= [_________] amps
= [_________] amps
= [_________] amps
= [_________] amps
= [_________] amps
= [_________] amps
= [_________] amps
= [_________] amps
17
Advertisement
Table of Contents
