Motorola PMP 320, Установка оборудования

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PMP320HDW2v1 3-31
Preliminary
JUL 2010
1
Install the CMM4 power supply in a hut, wiring closet, or weatherized
NEMAapproved enclosure. It is designed for extreme temperatures but it is
imperative to keep moisture away from the power converter.
2 Do not install the power supply within the CMM4 enclosure as it will increase
the heat within the enclosure to an unacceptable level. The CMM4 enclosure
is large to provide surface area for heat dissipation without the use of forced
convection fans, not to provide space for additional high-power electronics.
3
For the DC side of a 56 VDC power supply, engineer the DC cable, selecting
the wire gage from
Table 4-1 . Use either UV-resistant cable or shield the
cable (as in a conduit) from UV rays.
4
Installing the power supply for the CMM4 Chapter 3: CMM4 Hardware Installation
Installing the power supply for the CMM4
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WARNING
Although the output of the power supply is 29 VDC or 56 VDC, the power rating
classifies the converter as a Class 2 electric device. For this reason, whenever you
work on power in the CMM4, you must first disconnect the DC supply from the AC
power source.
Select the appropriate procedure to install the power supply for the CMM4. Directions are
provided for a 56 VDC power supply and a procedure on how to install the 30 VDC power supply.
If using both 30 VDC and 56 VDC, a 1000 Ohm 5W resistor must be installed across the 30 VDC
+V and GND at the terminal block.
56 VDC Power Supply Installation
Use the following procedure to install a 56 VDC power supply for the CMM4.
Procedure 3-2 Installing a 56 VDC Power Supply for the CMM4
Connect the DC cable on the top of the connector. Insert the +V lead into
the terminal 7 cage clamp and insert the GND (ground/return) lead into the
terminal 4 cage clamp. To insert a lead into a cage clamp, insert a thin-blade
screwdriver in the secondary cage clamp hole and lever the screwdriver away
from the main cage clamp hole.
Continued