Installation and Getting Started Guide for HP 600/610/620/630 RPS/EPS 2011-04

5-32
Installing and Connecting the HP Redundant / External Power Supplies
Recommended Connection Topologies
For example, in the closed loop, the first HP 610 EPS uses the output
connector to connect to the second or next HP 610 EPS input connector, and
so forth until the final HP 610 EPS output connector connects to the input
connector of the first HP 610 EPS. This then completes the connectivity and
closes the loop.
The main difference between the closed loop and the daisy chain is in the daisy
chain the output of the final HP 610 EPS does not connect to anything.
WARNING In the daisy chain configuration, make sure that you do not connect an EPS
cable to final output connector and leave the other end of that cable uncon-
nected. Power would be present on that cable and a shock hazard would be
present.
Figure 5-17. Example of a daisy-chain or string
Internal
Power
Status
Out
Ready
In
Ready
EPS Backup Power Ports
Internal
Power
Status
Out
Ready
In
Ready
EPS Backup Power Ports
Multiple power sources disconnect both the AC cord and EPS Backup power cables to completely remove power from the unit.
Line: 50/60
Hz
110
240 V~
11 6 A
Internal
Power
Status
Out
Ready
In
Ready
EPS Backup Power Ports
Internal
Power
Status
Out
Ready
In
Ready
EPS Backup Power Ports
Multiple power sources disconnect both the AC cord and EPS Backup power cables to completely remove power from the unit.
Line: 50/60
Hz
110
240 V~
11 6 A
Internal
Power
Status
Out
Ready
In
Ready
EPS Backup Power Ports
Internal
Power
Status
Out
Ready
In
Ready
EPS Backup Power Ports
Multiple power sources disconnect both the AC cord and EPS Backup power cables to completely remove power from the unit.
Line: 50/60
Hz
110
240 V~
11 6 A
Internal
Power
Status
Out
Ready
In
Ready
EPS Backup Power Ports
Internal
Power
Status
Out
Ready
In
Ready
EPS Backup Power Ports
Multiple power sources disconnect both the AC cord and EPS Backup power cables to completely remove power from the unit.
Line: 50/60
Hz
110
240 V~
11 6 A
Internal
Power
Status
Out
Ready
In
Ready
EPS Backup Power Ports
Internal
Power
Status
Out
Ready
In
Ready
EPS Backup Power Ports
Multiple power sources disconnect both the AC cord and EPS Backup power cables to completely remove power from the unit.
Line: 50/60
Hz
110
240 V~
11 6 A
HP 610 EPS units
connected in a string
AC power
EPS Backup Power cables
First
Last