Johnson Controls MS-NCM4510-2, Руководство по установке

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3. Drill holes in the wall at the locations marked in Step
2 and insert wall anchors (if necessary).
Figure 2: NCM Mounting Screw Hole
Dimensions and Mounting Area Requirements
(mm/in.)
4. Position the NCM and insert the screws through the
holes in the mounting clips, and carefully tighten all
the screws.
Important: Do not overtighten the mounting screws.
Overtightening the screws may damage the
mounting clips or NCM housing.
DIN Rail Mount Applications
To mount the NCM on a DIN rail:
1. Securely mount and center an 8 in. (or longer) section
of DIN rail in the required space.
2. Ensure that the bottom two mounting clips are pulled
outward and snapped firmly into the extended position
(
Figure 3 ).
Figure 3: DIN Rail and Mounting Clip Features
on the Back of the NCM
3. Hang the NCM by the DIN rail hooks ( Figure 3 ) on
the top track of the DIN rail, and position the NCM
DIN rail channel snugly against the tracks of the DIN
rail.
4. Push the bottom mounting clips up to secure the NCM
on the DIN rail tracks.
To remove the NCM from the DIN rail, snap the bottom
DIN clips to the outward extended position, and carefully
lift the NCM off the DIN rail.
Enclosure Mount Applications
Mount the enclosure per the manufacturer’s instructions
and mount the
NCM in the enclosure following the
guidelines in the Location Considerations and Mounting
the NCM sections.
Legacy NCM Replacement Considerations
Follow these important guidelines if the NCM is to replace
an existing NCM350/361 controller:
• The unit size and mounting orientation of the
NCM45x0-2 are noticeably different from the
NCM350/361. For example, the NCM45x0-2 is
designed for DIN-rail mounting on the horizontal plane
(
Figure 4 ), but can also be mounted with screws,
either horizontally or vertically. See Mounting the NCM
for details.
Figure 4: Recommended Installation Location of NCM
and Transformer in Standard Enclosure
• The wire termination locations on the NCM45x0-2 are
different from the NCM350/361 (
Figure 1 ). Pay close
attention to this when routing wires to their new
locations on the NCM45x0-2.
• The NCM45x0-2 requires 24 VAC power, whereas
the NCM350/361 uses line voltage. See the
Wiring
section for steps on installing an appropriate
transformer into the NCM enclosure. Also, the existing
line voltage cable that was used for the NCM350/361
is no longer needed and should be terminated
following local electrician codes.
• The NCM45x0-2 cannot directly replace an:
3 NCM45x0-2 Series Network Control Module Installation Instructions