Laying Out Equipment In Cabinet And Chassis - Notifier NFS-3030/E Installation Manual

Section 3 Installation

3.4 Laying Out Equipment in Cabinet and Chassis

The NFS-3030 allows for flexible system
design. Follow these guidelines when
deciding where to locate equipment in the
backbox. There are four basic positions
available on a chassis; the number of layers
that can be mounted in each position depends
on the chassis model and the module size.
The CPU mounts in chassis CHS-M3 in the
top row of the cabinet. The CPU and its
optional display occupy the left half of the
chassis (positions 1 and 2, see Figure 5). If
NCA is used, it may be door-mounted in front
of a displayless CPU (see the NCA manual for
details & restrictions).
Positions 3 and 4 of CHS-M3 can hold up to
four layers of equipment including
annunciators, panel circuit modules, and option boards. See Figure 6 for possible configurations of
these four layers.
The BMP-1 Blank Module Plate covers unused positions and also provides a location to door-mount
some option boards (see BMP-1 Product Installation Drawing for details).
Layers 1&2&3 mounted to
PEM studs on chassis
Layer 4 mounted to
PEM studs and tab-slot
*Note: If CHS-4N is used, door-mounting is only for use with
ACM-24AT and ACM-48A series annunciators.
Second, third, and fourth rows of equipment use any chassis compatible with CAB-4 series backboxes,
such as CHS-4N (shipped as part of CHS-4MB) or CHS-4L. Refer to the CAB-3/CAB-4 Series Cabinet
Installation Document for a complete list. Some equipment (such as the NCA and annunciators) can be
door-mounted; refer to your equipment's documentation for instructions.
Panel circuit modules include ICM-4RK, CRM-4RK, IZM-4RK, VCM-4RK, DCM-4RK and their
expanders. See Section 3.7 "Attaching Panel Circuit Modules"; for VCM-4RK and DCM-4RK, see the
Voice Alarm System Manual. Option boards include LCM-320, LEM-320, NCM-W/F, TM-4, and DPI-
232; see Section 3.6 "Attaching Option Boards". The documentation shipped with your equipment may
also contain device-specific instructions.
Note: It is recommended that system design take into consideration the UL requirements for minimum
20
Figure 6 Configuring Equipment in Chassis (Side View):
Positions 3 and 4 of CHS-M3, All 4 Positions of CHS-4N
Layers 1&2&3 mounted to
PEM studs on chassis
Layer 4 door-mounted*
Laying Out Equipment in Cabinet and Chassis
Figure 5 Chassis CHS-M3
Four positions
on chassis
1
CHS-M3
Positions 1 and 2:
Positions 3 and 4:
CPU
Four layers of equipment
Layers 1&2 mounted to
PEM studs on chassis
Layer 4 mounted to PEM
studs and tab-slot; Layer 3
suspended from Layer 4
NFS-3030 Installation PN 51330:C 10/28/2003
2 3 4
Layers 1&2 mounted to
PEM studs on chassis
Layer 4 mounted to PEM
studs and tab-slot; Layer 3
suspended from Layer 4