Table 53: Component Power Requirements (continued)
DC Current
Requirement
(Amps @
–48 VDC)
DC Power
Requirement
(Watts)Component
5.11 A245 WCooling system (full speed)
Not applicable114 WAC power supply
0.35 A17 WDC power supply
1.79 A86 WFEB
0.56 A27 WType 1 FPC (without PICs)
0.92 A44 WType 2 FPC (without PICs)
0.72 A34 WType 3 FPC (without PICs)
1.12 A54 WCFPCs
0.78 A38 WCB (and craft interface)
0.74 A35 WRouting Engine 1000
2.3 A110 WRouting Engine 1800
1.48 A71 WRouting Engine 2000
You can use the information in Table 53 on page 89 to calculate power consumption for
various hardware configurations, input current from a different source voltage, and
thermal output, as shown in the following examples for a DC-powered router. These
examples use generalized values for PICs. For PIC power requirements, see the M120
Multiservice Edge Router Interface Module Reference.
•
Power consumption for minimum configuration:
Cooling system (normal speed) + 1 host subsystem with RE1000 + 1 Type 1 FPC + 1 FEB
+ 1 Type 1 PIC =
3.90 A + 1.52 A + 0.69 A + 1.79 A + 0.56 A = 8.46 A @ –48 VDC = 406 W DC
•
Power consumption for maximum DC-powered configuration :
Cooling system (high speed) + 2 host subsystems with RE2000 + 2 CFPC + 4 Type 2
FPCs + 6 FEBs + 16 Type 2 PICs =
5.11 A + 2 (1.48 A + .78 A) + 2 (1.12) + 4(0.92 A) + 6(1.79 A) + 16(1.05 A) =
5.11 A + 4.52 A + 2.24 A + 3.68 A + 10.74 A + 16.8 A = 43.09 A @ –48 VDC = 2,068 W DC
•
System thermal output for maximally configured DC-powered router:
Watts DC * 3.41 = BTU/hr
2,068 * 3.41 = 7052 BTU/hr
Copyright © 2018, Juniper Networks, Inc.90
M120 Multiservice Edge Router Hardware Guide
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