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EXAMPLE OF HOT SWAP OF A UNIT
Existing connection.
Switch off UPS 3, open SWIN,
SWOUT, SWBATT.
Temporarily
open
ring
connection by disconnecting
communication cables from UPS
3
Repeat the same DIP-switch and
SW1 settings on the UPS 4
parallel card, insert it in
communication slot (secure with
screws).
Restore
ring
connection.
Close
SWIN,
SWOUT, SWBATT. Switch on
UPS 4.
After this procedure check that the UPSs do not signal any faults on their display and that the system shares the power output.
EXAMPLE OF HOT-PLUG REMOVAL
Existing connection.
Switch off UPS 3, open SWIN,
SWOUT, SWBATT.
Remove parallel cable from UPS
2 OUT and UPS 3 IN connectors.
Remove parallel cable from UPS
3 OUT connector and insert it in
UPS 2 (1)
(1)
If UPS removal is permanent, it is advisable to reconfigure UPS 1 and UPS 2 parallel cards. Settings should be changed with
units switched off (similar procedure to hot-plug insertion of UPS).
For simplicity’s sake, the examples given are for a 3-unit system, but the procedures explained can be used with other, more
complex systems.
UPS 1
UPS 2
UPS 3
Ring closure
UPS 1
UPS 2
UPS 3
UPS 1
UPS 2
UPS 3
UPS 4
Ring closure
UPS 1
UPS 2
UPS 3
Ring closure
UPS 1
UPS 2
UPS 3
UPS 1
UPS 2
UPS 3
Ring closure
Содержание Saturn
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