Harris ACS-163, Installation & Operation Manual

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3 – Installation & Wiring ACS-160 Series & STL-160 Series T1 Multiplexer Installation & Operation
Version 2.11, August 2011
Harris Corporation 3-19
Intraplex Products
3.6.5.2 Power and Alarm Connection Procedure
Use this procedure to make connections for power and alarms. Each step in this procedure gives the
connection for a 3RU shelf and then the equivalent connection for a 1RU shelf in parentheses if it is
different.
1. Connect the GND screw (pin 13 of the Alarms connector on a 1RU shelf) to station ground.
2. If the shelf is AC-powered, verify that the AC cord is available. Do not plug the cord into the AC
source yet.
3. If the shelf is DC-powered
a. Verify that a 2A slow-blow external fuse is available in the DC-power line to protect the
multiplexer. Remove this fuse and do not replace it until you are ready to power up (turn on)
the shelf.
Warning! This fuse must be provided, both to protect the multiplexer and to provide a safe means of
removing power from a DC-powered shelf.
b. Connect the -BAT A terminal (the black pigtail lead on a 1RU shelf) to the negative terminal of
the station battery.
c. Connect the +BAT A terminal (both the green and white pigtail leads on a 1RU shelf) to the
positive terminal of the station battery, tied to ground.
4. Connect SIG BAT (pin 15 on a 1RU shelf) to signaling battery. This step is required only if the shelf
contains 4-wire E&M voice modules using Type I, II, or III signaling
Check with Intraplex Customer Service if you are not sure whether this battery is necessary. If the
shelf is DC-powered, a separate signal battery is not required; connect SIG BAT and chassis
ground to the DC power source.
Warning! When using a separate signaling battery, place an in-line, slow-blow fuse. The fuse should
be 1A for up to 12 voice circuits, or 2A for 13 to 24 circuits. For safety reasons, this fuse
must be installed unless the back of the multiplexer is enclosed.
5. If ALARM and ALERT contacts are to be used, connect the desired contacts to terminal strip 2 (pins
1, 2, 3, 4, 9, and 11 on a 1RU shelf).
3.6.6 Available Power
Each multiplexer shelf’s power supply must provide sufficient power for all the common and channel
modules in that shelf. Some module adapters also contain active components that draw power. Table
3-15 lists the nominal power requirements for all current Intraplex common modules and their module
adapters. Check the individual channel module manuals for those modules’ power requirements.
Table 3-15. Nominal Power Requirements for Common Modules and Module Adapters
Module
Nominal
Power
Used
(Watts) Module
Nominal
Power
Used
(Watts)
Common
Modules
CM-5RB 2.6 CM-5RTD 2.8
Active
Module
Adapters
MA-235-1 1.0 MA-215 1.0
MA-235-2 1.0 MA-216 1.0