Dc System Operation; Power Up - Cisco ASR 9001-S Overview And Reference Manual

Power System Functional Description
Figure 2-62
1
Figure 2-63
1

DC System Operation

This section describes the normal sequence of events for system DC power up and power down.

Power Up

1.
2.
3.
Cisco ASR 9000 Series Aggregation Services Router Overview and Reference Guide
2-70
DC Power tray Power Feed Indicator —Version 1 Power System
PS3
RTN B+
l
0
Power feed indicators
DC Power tray Power Feed Indicator —Version 2 Power System
M3 PWR A- RTN A+ M2 PWR A-
Power feed indicators
DC power is applied to the power tray by toggling the user's DC circuit breakers to "ON" position.
DC/DC power supplies are enabled by toggling the Power On/Off logic switch located in each of the
power tray to ON position.
DC/DC power supply modules in the power tray provides –54 VDC output within seven seconds
after the DC is applied.
1
PS2
PWR B- RTN B+ PWR B- RTN B+
1
RTN A+ M1 PWR A- RTN A+ M0 PWR A-
Chapter 2 Functional Description
PS1
PWR B-
RTN A+
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