SRX1400 Services Gateway DC Power Supply

This topic includes the following sections:

DC Power Supply Overview

In a DC power configuration, the SRX1400 Services Gateway contains one or two DC power supplies, located at the front of the chassis in slots PEM0 and PEM1. Each power supply provides power to all components in the services gateway. When two power supplies are present, they share power almost equally within a fully populated system. The two DC power supplies provide power redundancy. If one power supply fails or is removed, the remaining power supply redistributes the electrical load without interruption.

Note: Only redundant DC power supply supports hot-removable and hot-insertable functionality.

DC Power Supply Electrical Specifications

Each DC power supply has a single DC input (-48 VDC and return) that requires a dedicated 40 A (-48 VDC) circuit breaker. Table 26 lists the DC power supply electrical specifications.

Table 26: DC Power Supply Electrical Specifications

Parameter

Specification

Maximum output power

1200 W

DC input voltage

–40 to –72 VDC

DC input current rating

30 A @ -48 VDC

DC Power Supply LEDs

Each DC power supply faceplate displays a single LED to indicate the status of the power supply (see Table 27).

Table 27: DC Power Supply LED

Color

LED Status

Indicated Condition

Green

On steadily

DC input voltage is present, and both main 12 V output and standby 3.3 V output are enabled and healthy.

Blinking

DC input voltage is present, standby 3.3 V output is on, but the main 12 V output is disabled. This condition usually indicates that the device has been powered off at the POWER button on the SYSIOC front panel. This condition can also indicate that either the SYSIOC or Routing Engine has been removed from the services gateway.

Red

On steadily

The power supply has detected one or more of the following faults:

  • Power supply fan failure
  • Power supply over-temperature condition
  • Over-current or under-voltage condition on the standby 3.3V output

Blinking

The power supply has detected one or more of the following faults:

  • Under-voltage condition on the 12 V output
  • Over-voltage condition on the 12 V output
  • Over-current condition on the 12 V output

Related Documentation