ACS-160 Series & STL-160 Series T1 Multiplexer Installation & Operation 2 – Functional Description
Version 2.11, August 2011
2-18 Harris Corporation
Intraplex Products
2.1.5 Power Supply Modules
The standard 1RU ACS-160 Series power supply is a 30-watt, universal AC supply, while the standard
3RU ACS-160 Series or STL-160 Series power supply is a 60-watt, universal AC supply. DC power
supplies for 3RU shelves are also available with input voltages of 48 VDC and 24 VDC. An optional 95
watt universal AC supply is available for the 3RU shelf for applications with high power requirements.
Section 7 – “Specifications” gives details on all available power supplies. Follow the Section 3.3 –
Multiplexer Installation guidelines about shelf spacing to avoid heat problems.
Note: The ACS-160 Series and STL-160 Series multiplexers allow for the combined use of AC and DC
power supply operation at the same time.
A second power supply may be inserted in the second power supply slot for power supply redundancy.
If the main supply fails, the second supply ensures uninterrupted operation. The redundant power
supply is optional and is not available for 1RU shelves.
Note: An additional power supply is for redundancy only. For example, a 60-watt shelf with two
power supplies should only use 60 watts of power to assure that, if one power supply fails, the
configuration does not overload the existing power supply.
Power supply modules require no special setup. As long as they are plugged into their slots and
system power is applied, they are operating.
Figure 2-11 shows the key system status indicator lights and the Alert and Alarm relays on the power
supply module. These status indicator lights and relays respond to fault conditions detected in the
● Multiplexer.
● T1 circuit.
● Channel modules installed in the shelf.
Figure 2-11. Y-Series Power Supply Indicator Lights
Table 2-8 lists the indicator light meanings.
These four indicator lights are visible when the front cover of the multiplexer is closed:
● POWER
● NORMAL
● ALERT
● ALARM
The SUPPLY FAIL indicator light(s) are not visible when the cover is closed.
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