Xtreme Power Conversion Corporation
R91 User’s Manual
Page 23
Uninterruptible Power Supply
CAUTION!
After changing the parallel system ID, the connection between Muser4000 and equipment might be interrupted. If
this occurs, re-connect in accordance with the instructions described earlier in this manual.
CAUTION!
Parallel cable cannot be connected when setting the parallel parameters
• After setting the UPS’s that need to be paralleled, power OFF all the UPS’s. Connect all the UPS’s according
to “parallel cable installation”, and then power ON the UPS’s.
Communication Port Definitions (RS232, RS485)
Definition of the Port
Connection between PC RS232 port and UPS RS232 port
PC RS232 port
UPS RS232 port
Description
Pin 2
Pin 2
UPS send, PC receive
Pin 3
Pin 3
PC send, UPS receive
Pin 5
Pin 5
Ground
Connection between the computer RS485 port and UPS RS485 port
PC (DB9 male)
UPS (DB9 female)
Description
Pin 1
Pin 1
485 “-“
Pin 6
Pin 6
485 “+”
Available function of RS232
• Monitor UPS power status
• Monitor UPS alarm information
• Monitor UPS running parameters
• Timing Off / On setting