Periphery board (500p) FCI2017
NAC circuits
2
34 | 46
Building Technologies
A6V10315038_f_en_--
Siemens Industry, Inc.
2016-02-25
2.5.1 Wiring the NAC circuits
The following wiring diagrams show how to connect notification devices to the circuit,
either as class A (style Z) or class B (style Y) circuit. For class A, no end-of-line resistor
is needed. It is built into the circuit.
To ensure proper functioning, the jumpers must be set correctly for class A/B
selection.
In the diagrams below, polarity is shown in activated condition.
Notification appliance circuit supervised and power limited.
Figure 9: X601: Class A (style Z) supervised output connection
Figure 10: X601: Class B (style Y) supervised output connection
* EOL resistance must be connected during non-use.
EOL resistance: 2.4 k
Ω
, 0.5 W
2.5.2 X601 terminal block – NAC 1 class A / NAC 1-1 class B / NAC
1-2 class B
Pin
Designation
Description
4
NAC1-1 (+)
Positive feed for notification appliances for NAC 1 class A or NAC 1-1 class B
3
NAC1-1 (-)
Return feed for notification appliances for NAC 1 class A or NAC 1-1 class B
2
NAC1-2 (+)
Positive feed for notification appliances for NAC 1 class A or NAC 1-2 class B
1
NAC1-2 (-)
Return feed for notification appliances for NAC 1 class A or NAC 1-2 class B
Admissible cable cross-section: 1 x 12…18 AWG or 2 x 16…18 AWG
X601
1
NAC1-2
+
NAC1-2
2
3
4
-
+
-
NAC1-1
NAC1-1
+
+
-
-
X601
1
NAC1-2
+
NAC1-2
2
3
4
-
+
-
NAC1-1
NAC1-1
+
+
-
-
*
EOL
EOL
