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Electrical Ratings
Electrical Ratings
Input Voltage: 24 VDC (must be filtered and power-limited).
Current Draw from 24 VDC Input:
ACM-16ATF & ACM-32AF Series
AEM-16ATF & AEM-32AF Series
Data Communications Port: EIA-485 operating at 20 Kbps (must be power-
limited).
Annunciator Power Requirements
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 manual.
However, if the current draw dedicated to the annunciators must be
calculated as a separate figure, use the equations below:
Number of ACM modules
Note: The 0.040 amps can be reduced to 0.030 for modules
with Piezo Disable or Flash Inhibit modes selected.
Number of AEM modules
Number of ACM and AEM
modules assumed to be in alarm
simultaneously
Note: 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.
ACM-16ATF/ACM-32AF Manual PN 51480:A0 02/02/01
Total Annunciator Standby Current
Total Annunciator Alarm Current
Table 2 Calculation of Power Requirements
3. Design Considerations
Standby
0.040 amps
0.002 amps
[
]
X 0.040
[
]
X 0.002
[
]
X 0.016
Alarm
0.056 amps
0.018 amps
= [
] amps
= [
] amps
= [
] amps
= [
] amps
= [
] amps
21
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