18
Wall-Mount Power Supply Chassis model 750003
2.2.2
Power Supply/Battery Back-up terminal block
This terminal block provides charging power to a second Chassis used to house a
Battery Back-up Module 751312.
When a second Chassis is used to provide redundancy, its output will be
connected to this terminal block on the primary Chassis.
It is also possible to provide 48 V battery back-up using two 751312 units by
wiring the output accordingly. See section 3.5 on page 25 for more information.
For a view of the terminal block, refer to Figure 2 on page 17 and Table 2 on page
18.
2.2.3
Input fuse
The input fuse is connected in series with the Live lead of the input power feeding
the Chassis to provide overcurrent protection in case of damaging surges or
failure of the Power Supply Module. The fuse is a FAST, 5A/125V, 3AG type fuse
and must be replaced with the same type of fuse.
2.2.4
Ground lug
The Chassis must be grounded through the ground lug to a solid local ground
using a #10 AWG or bigger, wire.
Table 2: Input/Output Terminal Block pinout
Terminal
Block Pin
Function
OUTPUTS:
0V
Positive output of 24 V/48 V
-24 V
Negative output of 24 V
-48 V
Negative output of 48 V
ALM
Normally open relay contact provides dry contact closure for an audio or
visual indication of an output power failure.
ALM
INPUTS:
GND
Input cable ground wire
N/-
Power input Neutral wire (for AC input) or negative wire (for DC input)
L/+
Power input Live wire (for AC input) or positive wire (for DC input)
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...
