Model PAD-5-CLSA
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11
Siemens Industry, Inc.
A6V101030359_en--_c
Building Technologies Division
3.2 NAC Circuits
3.2.1 Wiring the NAC circuits – Class A and B
Notification appliance circuit supervised and power limited. Maximum output current
of any NAC, regardless of class, is 3A
1
.
++
EO L
EO L
CLASS B
6_+
6_-
5_+
5_-
7_+
7_-
8_+
8_-
+
+
CLASS A
Figure 5: NAC 5 and 6 shown configured as one Class A loop, and NAC 7 and 8 shown configured
as two Class B loops (supervised output connection. Polarity shown in ACTIVE mode.)
* EOL resistance must be connected during non-use.
EOL resistance: 2.2K – 24K
NOTE: Refer to the Compatible Notification Appliances document, P/N 315-096363, for the list
of compatible NAC devices.
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Combined Total output between all on-board NACs, Class A Expansion Module NACs, and AUX is
9A for a FP2012-U1 (300 Watt Power Supply) and 6A for a FP2011-U1 (170 Watt Power Supply)
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