Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?

 
 

QFX5100 Power System

AC Power Supply for a QFX5100 Device

The two power supplies in QFX5100 switches are hot-removable and hot-insertable field-replaceable units (FRUs). The power supplies are installed in the switch at the factory. You can install replacement power supplies from the management panel without powering off the switch or disrupting the switching function.

The AC power supply in 1 U QFX5100 switches is 650 W; the AC power supply in the 2 U, QFX5100-96S switch, is 850 W. Both power supplies look identical. Be sure to use the correct power supply for your chassis product SKU (see Table 1).

CAUTION:

Do not mix power supplies with different airflow or different wattage. The system raises an alarm when a power supply having a different airflow or wattage is inserted into the chassis.

See Figure 1 for an example of the 1 U design and Figure 2 for an example of the 2 U power supply.

Figure 1: 1 U AC Power Supply in QFX5100 Switches1 U AC Power Supply in QFX5100 Switches
  1

Handle

  3

AC appliance inlet

  2

Security latch

  4

Ejector lever

Figure 2: 2 U AC Power Supply in a QFX5100-96S Switch2 U AC Power Supply in a QFX5100-96S Switch

The power supply provides FRU-to-port or port-to-FRU airflow depending on the product SKU you purchase. On legacy switches, or switches with an LCD, this airflow is called back-to-front and front-to-back. The power supplies have color-coded handles with a fan icon. See Figure 3 for an example of the power supply. A power supply with a blue handle denotes FRU-to-port airflow; a power supply with a gold-colored handle denotes port-to-FRU airflow.

Figure 3: Power Supply Handle DetailPower Supply Handle Detail
  1

Fan icon on handle

 
CAUTION:

Verify that the airflow direction on the power supply handle matches the direction of airflow in the chassis. Ensure that each power supply you install in the chassis has the same airflow direction. If you install power supplies with two different airflow directions, Junos OS raises an alarm. If you need to convert the airflow pattern on a chassis, you must change out all the fans and power supplies at one time to use the new direction.

Table 1 shows the different power supplies and their direction of airflow.

Table 1: Airflow Direction in QFX5100 AC Power Supplies

QFX5100 Product SKUs

Wattage

Product Number

Direction of Airflow

Color of Power Supply Handle

QFX5100-24Q

QFX5100-48S

QFX5100-48SH

QFX5100-48T

QFX5100-48TH

650 W

JPSU-650W-AC-AFI

QFXC01-PWRACI-650A (older version)

FRU-to-port

Juniper Azure Blue

QFX5100-96S

850 W

JPSU-850W-AC-AFI

QFX5100-24Q

QFX5100-48S

QFX5100-48SH

QFX5100-48T

QFX5100-48TH

650 W

JPSU-650W-AC-AFO

QFXC01-PWRACO-650A (older version)

Port-to-FRU

Juniper Gold

QFX5100-96S

850 W

JPSU-850W-AC-AFO

To avoid electrical injury, carefully follow instructions in Connecting AC Power to a QFX5100 Device.

AC Power Specifications for a QFX5100 Device

Table 2 describes the AC power specifications for a QFX5100 device.

Table 2: AC Power Specifications for a QFX5100 Device

Item

AC input voltage

AC input line frequency

AC input current rating

Typical power consumption

QFX5100-24Q

230 W

QFX5100-48S and QFX5100-48SH

230 W

QFX5100-48T and QFX5100-48TH

322 W

QFX5100-96S

315 W

Maximum power consumption

QFX5100-24Q

365 W

QFX5100-48S and QFX5100-48SH

365 W

QFX5100-48T and QFX5100-48TH

395 W

QFX5100-96S

470 W

AC Power Cord Specifications for a QFX5100 Device

Detachable AC power cords are shipped with the chassis, if you include them as part of your order. The coupler is type C13 as described by International Electrotechnical Commission (IEC) standard 60320. The plug end of the power cord fits into the power source outlet that is standard for your geographical location.

CAUTION:

The AC power cord for the device is intended for use with that chassis only and not for any other use.

Note:

In North America, AC power cords must not exceed 4.5 meters (approximately 14.75 feet) in length, to comply with National Electrical Code (NEC) Sections 400-8 (NFPA 75, 5-2.2) and 210-52 and Canadian Electrical Code (CEC) Section 4-010(3). The cords that can be ordered for the QFX5100 devices are in compliance.

Table 3 lists AC power cord specifications provided for each country or region.

Table 3: AC Power Cord Specifications

Country/Region

Electrical Specifications

Plug Standards

Australia

250 VAC, 10 A, 50 Hz

AS/NZ 3112-1993

China

250 VAC, 10 A, 50 Hz

GB2099.1 1996 and GB1002 1996 (CH1-10P)

Europe (except Italy, Switzerland, and United Kingdom)

250 VAC, 10 A, 50 Hz

CEE (7) VII

Italy

250 VAC, 10 A, 50 Hz

CEI 23-16/VII

Japan

125 VAC, 12 A, 50 Hz or 60 Hz

JIS 8303

North America

125 VAC, 13 A, 60 Hz

NEMA 5-15

South Korea

250 VAC, 10 A, 60 Hz

KSC 8305

Switzerland

250 VAC, 10 A, 50 Hz

SEV 1011 SEV 6534/2

United Kingdom

250 VAC, 10 A, 50 Hz

BS 1363A

Figure 4 illustrates the plug on the power cord for some of the countries or regions listed in Table 3.

Figure 4: AC Plug TypesAC Plug Types

AC Power Supply LEDs on a QFX5100 Device

Figure 5 shows the location of the LEDs on the power supply.

Figure 5: AC Power Supply LEDs on a QFX5100 SwitchAC Power Supply LEDs on a QFX5100 Switch

Table 4 describes the LEDs on the AC power supplies.

Table 4: AC Power Supply LEDs on a QFX5100 Switch

LED

Color

State

Description

AC OK

Unlit

Off

The power supply is disconnected from power, or power is not coming into the power supply.

Green

On steadily

Power is coming into the power supply.

DC OK

Unlit

Off

The power supply is disconnected from power, or the power supply is not sending out power correctly.

Green

On steadily

The power supply is sending out power correctly.

Fault

Amber

On steadily

An error has been detected in the power supply. Replace the power supply as soon as possible. To maintain proper airflow through the chassis, leave the power supply installed in the chassis until you are ready to replace it.

Note:

If the AC OK LED and the DC OK LED are unlit, either the AC power cord is not installed properly or the power supply fuse has failed. If the AC OK LED is lit and the DC OK LED is unlit, the AC power supply is installed properly, but the power supply has an internal failure.

DC Power Supply in a QFX5100 Device

The power supplies in QFX5100 devices (see Figure 6) are hot-removable and hot-insertable field-replaceable units (FRUs) that you can install in 1 U DC product SKUs of QFX5100 devices without powering off the device or disrupting the switching function.

The DC power supply in 1 U product SKUs of QFX5100 is 650 W with dual feeds for power resiliency. The DC power supply in the 2 U product SKU, QFX5100-96S, is 850 W with dual feeds for power resiliency. Both power supplies have a similar design. See Figure 6 for an example of the 1 U design and Figure 7 for an example of the 2 U power supply.

Figure 6: DC Power Supply in QFX5100 DevicesDC Power Supply in QFX5100 Devices
  1

Terminal block

  3

Ejector lever

  2

ESD grounding point

  4

Handle

To supply sufficient power for 1 U models, terminate the DC input wiring on a facility DC source that is capable of supplying a minimum of 7 A at –48 VDC.

Figure 7: DC Power Supply for QFX5100-96S DevicesDC Power Supply for QFX5100-96S Devices
  1

Terminal block

  3

Ejector lever

  2

ESD grounding point

  4

Handle

Note:

The DC power supply in the switch has four terminals labeled V-, V-, V+, and V+ (see Figure 8) for connecting DC power source cables labeled positive (+) and negative (–).

Figure 8: DC Power Supply Faceplate in QFX5100 DevicesDC Power Supply Faceplate in QFX5100 Devices
  1

Shunt negative input terminals (-48V)

  5

ESD grounding point

  2

Shunt positive input terminals (+RTN)

  6

Fault LED

  3

Terminal block

  7

Output LED

  4

Ejector lever

  8

Input LED

To avoid electrical injury, carefully follow instructions in Install and Remove QFX5100 Power Supplies.

DC Power Specifications for a QFX5100 Device

Table 5 describes the DC power specifications for DC product SKUs of the QFX5100 device.

Table 5: DC Power Specifications for a QFX5100 Device

Item

Product SKUs

Specifications

DC input voltage

QFX5100-24Q

QFX5100-48S

QFX5100-48T

  • Rated operating voltage: –48 VDC to -60 VDC

  • Operating voltage range: -40 VDC through –72 VDC

QFX5100-96S

  • Rated operating voltage: VDC -48 VDC to -60 VDC

  • Operating voltage range: –40 VDC through -72 VDC

DC input current rating

QFX5100-24Q

QFX5100-48S

QFX5100-48T

QFX5100-96S

10 A maximum

Typical power consumption

QFX5100-48S

QFX5100-48T

QFX5100-24Q

300 W

QFX5100-96S

315 W

Maximum power consumption

QFX5100-24Q

QFX5100-48S

QFX5100-48T

385 W

QFX5100-96S

470 W

DC Power Supply LEDs on a QFX5100 Device

Figure 9 shows the location of the LEDs on the DC power supply.

Figure 9: DC Power Supply Faceplate on a QFX5100 SwitchDC Power Supply Faceplate on a QFX5100 Switch
  1

Input LED

  3

Fault LED

  2

Output LED

 
CAUTION:

The V+ terminals are shunted internally together, as are the V- terminals. The same polarity terminal can be wired together from the same source to provide an additional current path in a higher power chassis. Do not connect the terminals to different sources.

Table 6 describes the LEDs on the DC power supplies.

Table 6: DC Power Supply LEDs on a QFX5100 Switch

Name

Color

State

Description

Input

Unlit

Off

The power supply is disconnected from power, or power is not coming into the power supply.

Green

On steadily

Power is coming into the power supply.

Output

Unlit

Off

The power supply is disconnected from power, or the power supply is not sending out power correctly.

Green

On steadily

The power supply is sending out power correctly.

Fault

Amber

On steadily

An error has been detected in the power supply. Replace the power supply as soon as possible. To maintain proper airflow through the chassis, leave the power supply installed in the chassis until you are ready to replace it.