Table 33: Component Power Requirements
DC Current
Requirement
(Amps @
–48 VDC)
DC Power
Requirement
(Watts)
Component
3.90 A
187 W
Cooling system (normal speed)
5.11 A
245 W
Cooling system (full speed)
Not applicable
114 W
AC power supply
0.35 A
17 W
DC power supply
1.79 A
86 W
FEB
0.56 A
27 W
Type 1 FPC (without PICs)
0.92 A
44 W
Type 2 FPC (without PICs)
0.72 A
34 W
Type 3 FPC (without PICs)
1.12 A
54 W
CFPCs
0.78 A
38 W
CB (and craft interface)
0.74 A
35 W
Routing Engine 1000
1.48 A
71 W
Routing Engine 2000
You can use the information in Table 33 on page 239 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 PIC
Guide
.
•
Power consumption for minimum configuration:
Cooling system (normal speed) + 1 host subsystem with 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 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
239
Copyright © 2010, Juniper Networks, Inc.
Appendix D: Power Guidelines, Requirements, and Specifications for the M120 Router
All manuals and user guides at all-guides.com