APC REMOTE POWER-OFF DEVICE AP9830 - Manual (Page 24)

Remote Power-Off Device — Installation and Quick Start 21
Configuration and Setup: How to Turn Off the Output of Multiple UPSs
Matrix-UPS
®
in a
cascading
configuration
You can include only one APC Matrix-UPS in a cascading
configuration, and you must place it at the end of the series of
UPSs (UPS
n in the example setup).
Connect
multiple RPOs in
parallel setup
(voltage input
switches only) You can set up a remote voltage input switch by connecting
multiple Remote Power-Off Devices in parallel.
 UPS 1
 UPS
n
 Pin 3
 Pin 4
 Wiring to voltage input remote switch
 RJ-11 cable
 Keystone jack
Warning
To avoid equipment damage and false RPO
signals, use a parallel configuration only with a
voltage input remote switch. To connect multiple
RPOs to one contact closure switch, see “Cascade
multiple RPOs (serial setup)” on page 20.