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Table 17: AC Power Supply LEDs
DescriptionStateColorLabel
AC power input voltage is below 78 VAC.OffAmber
AC OK
AC power input voltage is within 78–264 VAC.OnGreen
DC power outputs generated by the power supply are not within the normal
operating ranges.
OffGreen
DC OK
DC power outputs generated by the power supply are within the normal operating
ranges.
On
Power supply is functioning normally.OffRed
PS FAIL
Power supply is not functioning normally and its output voltage is out of regulation
limits. Check AC OK and DC OK LEDs for more information.
On
DC Power Supply
Each DC power supply has a single DC input (–48 VDC and return) that requires a
dedicated circuit breaker. We recommend that you use a minimum 40 A facility
circuit breaker, or as required by local code.
Figure 16: DC Power Supply
For information about site power preparations, see “Power Guidelines, Requirements,
and Specifications” on page 165. For information about connecting the router to
power, see “Connecting Power to a DC-Powered Router” on page 56. For DC power
electrical specifications, see “DC Power System Electrical Specifications” on page 167.
DC Power Supply Configurations for the MX240 Router
In the DC power configuration, the router contains either one or two DC power
supplies (see Figure 16 on page 23) located at the rear of the chassis in slots PEM0
Power Supplies ■ 23
Chapter 2: Hardware Components