Hardware Installation Manual 44 Document #: LTRT-94720
Mediant 3000
Item # Label Description
6 CRT, MJR,
MNR, IN
Alarm Terminal Block Closures: Contains four groups of
terminals for connecting external Telco alarm devices according
to Critical, Major, and Minor severities. Devices can be
controlled using Common, Normally Open method. The IN
connector is for Shelf (User-Defined) connections, which are to
be implemented in a future version.
7
SWAP RDY
N/A.
3.8.2.2 DC Power Supply Modules
The PS/DC/3K Power Supply module is an advanced-design, multi-output switching power
supply, providing DC primary input power configurations. The Power Supply modules are
located on the front panel and connect to the PEM modules (located on the rear panel),
through the chassis' backplane.
Figure 3-22: DC Power Supply (PS/DC/3K) Module
Power for the device is typically supplied from redundant DC power feeds, whose input
voltage ranges from -40 to -60 VDC nominal -48 to -60 VDC mains, and reverse-polarity
protected. The Power Supply modules function in an output current, load-sharing
configuration to provide necessary voltages and fail-safe operation to the blades in the
chassis.
The unit has a handle for easy removal and re-insertion, under power (hot-swap capable).
Table 3-22: DC Power Supply (PS/DC/3K) Module Specifications
Function Specification
Output
Output Power
300 watts maximum, continuous
Outputs (V1-V4)
+3.3 V at 40 A; +5 V at 40 A; +12 V at 5.5 A; -12 V at 1.5A
Controls & Signaling
TTL
General Characteristics
Efficiency
75% at full load
Safety Standards
EN 60950-1, UL 6050-1
Dimensions
4 x 12.7 x 28 cm (1.6 x 5 x 11 inch), for a 6.8 watt/inch3 power
density output
DC Input
PEM/DC
Power Entry Module for DC
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