0 computer interface, Fig.21: edp 70 plus computer interface pin layout – Energy Tech Laboratories EDP70 User Manual
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MI00/10056 rev.1--05/2001
11.0
COMPUTER INTERFACE
11.1
AS400
The EDP70 PLUS UPS is fitted with a 9 pin female ‘D’ type socket for direct connection to a IBM AS/400
computer or equivalent, see figure 21. This facility can also be used with operating system software of other
manufacturers. The function of the pins on the socket are shown below:
Pin
Number
DESCRIPTION
FUNCTION NUMBER
8
EDP70 PLUS UPS ON
The UPS is supplying the load.
6
RESERVE TO LOAD
The reserve AC supply is supplying the load.
9
UTILITY SUPPLY FAIL
The AC utility supply to the UPS has failed.
7
BATTERY LOW
The battery capacity is at a minimum and the
inverter will shortly shut down and the load will be
automatically transferred to the reserve AC supply.
5
COMMON
All the above are connected to common when the
function is true.
Fig.21: EDP 70 Plus Computer Interface Pin Layout