16
Wall-Mount Power Supply Chassis model 750003
2.2
Description
Below is a description of the Chassis. For a view of the detailed section, please
refer to Figure 1 on page 15.
2.2.1
Input/Output terminal block
Input power is brought to the Chassis through the bottom three contacts of the
terminal block. Depending on the Power Supply being used, it can be fed either
120 Vac, 130 Vdc, 48 Vdc or 24 Vdc. Although the Power Supply Modules are not
polarity-sensitive, the power has to be wired according to the polarity indications
on the terminal blocks.
The output from the Power Supply comes out of the top three pins of the terminal
block. The top contact is the positive lead, the second contact provides the
negative lead of a 24 V power output and the third contact provides the negative
lead of a 48 V power output.
The fourth and fifth output pins provide alarm contacts. Whenever the output of a
Power Supply fails, the alarm contact on the unit will close, these alarm contacts
are provided through these two pins. When two Power Supplies are used with two
Power Supply Chassis, the alarm contacts of each of the Chassis can be wired in
parallel or separately to provide an alarm for the system or each Chassis. If one
unit fails, then an alarm is raised while the second unit still provides power to the
system.
For a view of the terminal block, refer to Figure 2 on page 17 and
Summary of Contents for Teleline 750003
Page 2: ......
Page 5: ...Chapter 1 General Information...
Page 12: ......
Page 13: ...Chapter 2 Overview...
Page 15: ...15 Introduction Figure 1 Wall Mount Chassis Q The fuse is a FAST 5A 125V 3AG type fuse NOTE...
Page 17: ...17 Description Figure 2 Wall Mount Chassis Terminal Block View...
Page 21: ...Chapter 3 Installation...
Page 28: ...28 Wall Mount Power Supply Chassis model 750003 Figure 6 Redundant 24 V Power Supply...
Page 29: ...29 Chassis Wiring Figure 7 Redundant 48 V Power Supply...
Page 31: ...31 Chassis Wiring Figure 8 24 V Chassis with Battery Backup...
Page 33: ...Appendix A Acronyms...
