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MS-9200UDLS PN 52750:E1 01/27/09 51
2.5.1 Configuring NACs
The Notification Appliance Circuits on the main circuit board are configured for Style
Y (Class B) or Style Z (Class A) by properly orienting the NACKEY card in JP6 which
is located at the top of the main circuit board near the NAC terminal blocks TB3 and
TB4. The default configuration is for Style Y (Class B). Refer to Figure 2.7 for
information on installing the NACKEY card.
2.5.2 Style Y (Class B) NAC Wiring
CLASS A
CLASS B
NACKEY -PCA
NACKEY -PCA
Figure 2.7 NAC Configuration Using NACKEY
NACKEY Card
JP6
Top edge of MS-9200UDLS
Main Circuit Board
• Style Z (Class A) - install NACKEY into JP6 with
Class A pointing down toward circuit board as
illustrated to the right.
• Style Y (Class B) - install NACKEY into JP6 with
Class B pointing down toward circuit board .
NACKEY must be inserted with text side facing in
toward center of main circuit board and key into key-
slot as illustrated to the right. It is keyed to prevent
incorrect insertion.
NACKEY card slot
JP6
TB3
TB4
92nackey.cdr
Key
Key-slot
B
+
B
+
B
-
B
-
1
1
-
+
+
+
+
+
+
+
+
+
+
+
+
B
+
B
-
B
+
B
-
33
2
2
44
Figure 2.8 NAC Style Y (Class B) Wiring
4 Style Y (Class B) Notification Appliance Circuits, supervised and power-limited - 4.7 kΩ, ½ watt P/N:71252 UL listed
Polarized Bells
Polarized Bells
Polarized HornsPolarized Horns
Polarized Strobes
Notification Appliance Circuit
polarity shown in alarm state
Dummy Load all unused circuit
TB4
9200nacy.cdr
Polarized Strobes
circuit number
NAC 1
NAC 3
NAC 4
NAC 2
TB3