24 NFS2-640/E Installation Manual — P/N 52741:P2 7/10/14
Installation Laying Out Equipment in Cabinet and Chassis
From… To… Required Stand-off or Hardware
NFS2-640/E
chassis Control panel or
option board on first layer
Attaches directly to chassis.
NFS2-640/E
chassis Keypad/display unit Attaches directly to chassis rails.
NFS2-640/E
chassis NCA-2 Attaches directly to chassis rails with mounting hardware NCA/640-2-KIT
(ordered separately)
Control panel
(third slot)
Any option board in third
slot (such as LEM-320)
4 male-female stand-offs 1 inch (25.4 mm) P/N 42118; installed and
shipped with CPU2-640/CPU2-640E.
Option board or NFS2-
640/E chassis (fourth
slot)
Option board in next layer
(not including LEM-320)
4 male-female stand-offs either 1.5 inch (38.1 mm) P/N 42175 or
0.937 inch (23.8 mm) P/N 42166, both shipped with option boards.
Choose stand-off length that allows space for your option board’s
connectors; using longer stand-offs may reduce the number of option
boards that fit in the chassis position.
Chassis or Dress Panel Annunciator Attaches directly to dress panels or attaches to flanges on chassis CHS-
4/4N. (Screws provided with annunciator.)
Dress panels
DP-DISP2, ADP2-640,
ADP-4B
Option board BMP-1 attaches to dress panel; option module attaches to BMP-1.
(Screws provided with option module). See Figure 3.7.
Dress panel ADP-4B NCA-2 Use “NCA-2 RETRO kit” hardware if mounting NCA-2 to a dress panel;
cannot be mounted in front of the NFS2-640/E chassis.
Table 3.2 Stand-off Lengths
Product Chassis/Door-mounting options
NFS2-640/E
• NFS2-640/E chassis
NCA-2
• CHS-M2, NFS2-640/E chassis, CHS-M3
• CA-2; requires two rows in the backbox
DVC
•CA-1
•CA-2
DVC-RPU
•CA-1
DAA
• Factory-mounted in its own chassis.
Analog audio amplifiers AA-30, AA-
100, AA-120
• Mounts directly onto CAB-4 backbox
Option boards
• NFS2-640/E chassis, CHS-4, CHS-4L, CHS-4N (shipped as part
of kit CHS-4MB), or on BMP-1 inside dress plate
• Note: Mount LEM-320 in front of CPU2-640 in the NFS2-640/E
chassis.
• Note: Mount UDACT/UDACT-2 in second or lower row, or in
slot 4 of the NFS2-640/E chassis with nothing in front of it.
• Note: Mount fiber versions of the NCM and HS-NCM in the top
row under knockouts, to avoid excessive bend on the fiber-optic
cable.
ACS series annunciators ACM-24AT,
ACM-48A and expanders
• Dress Panel DP-DISP2, ADP2-640, or ADP-4B
Table 3.3 Chassis Compatibility
NOTE: In retrofit applications, the CAB-3 series backbox may be used, but order BP2-4 to
replace previous BP-4 battery dress panels.
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