Rackmount Solutions VA 20000 Description of the Interface E-Series, Standard Interface COM a

Chapter 15 Description of the Interface (E-Series)

The E-Series UPS has a standard interface COM A and an optional interface COM B. Protocol data transfer signal exchange is through COM A RS232 interface or the optional interface (COM B).

These interfaces can be used for:

•Direct communication between UPS and a computer.

•Integration of the UPS as client into a network with centralized monitoring.

•Transfer of operational states to external alarm systems.

The necessary communication software packages and interface cables are available as accessories.

15.1 Standard Interface COM A

The 9-pin SUB-D connector (pin contacts) contains the RS 232 signals, 5 output signals and 1 input signal. The RS232 signal RXD can also be used as input signal, when the sequential interface is not used.

The 5 alarm outputs are open-collector outputs.

Fig. 33: COM A signal Definition and Connection

The interface COM A is galvanically separated from all other circuits.

44 Chloride Active and E-Series UPS User Manual