26 NCA-2 Manual — P/N 52482:M5 03/20/2019
Installation NCA-2 / NFS2-640 Standalone
3.7 NCA-2 / NFS2-640 Standalone
The NCA-2 may be mounted over a displayless NFS2-640 using the hardware from attachment kit p/n NCA/640-2-KIT. Refer to
Figure 3.9.
Figure 3.9 NCA-2 on a Displayless Panel
3.8 Retrofits
The NCA-2 RETRO kit provides hardware to change the footprint of an NCA-2 to fit on older dress panels. Refer to the NCA-2RETRO
Production Installation Document.
3.9 Form-C Relays on the NCA-2
The panel provides a set of Form-C relays. These are rated for 2 A at 30 VDC (resistive):
• Alarm - TB4
• Trouble - TB3
• Supervisory - TB2
• Security - TB1
The Supervisory and Security contacts can also be configured as Alarm contacts by setting switches SW1 and SW2 away from the fac-
tory default positions shown in Figure 3.10.
Attach annunciator to panel
with standoffs and screws from
the attachment kit.
nca640-2kit1.wmf
• Seven 6-32 x 1/4 SEMS screws, p/n 38061.
• Bottom bracket, p/n 18756.
• Top bracket, p/n 18755.
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STEP 1
STEP 2
STEP 3
STEP 4
STEP 5
Attach the bottom bracket to the panel
chassis using two of the screws.
Attach top bracket to the
NCA-2 by aligning its
standoffs over the holes at
the top of the NCA-2 and
fastening with three of the
screws.
Carefully slide
the network
annunciator into
the slots in the
bottom bracket.
Fasten the top bracket to
the panel chassis with the
last two screws.
Panel
chassis
Network Annunciator
J1 NUP port
Connect the NCA-2 to the control
panel via the NUP port. Attach the
NUP cable from J1 on the
annunciator to J1 on the panel.
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