Installation manual

RS-232 Standard Interface port

The RS-232 interface uses a 9-pin female D-sub connector. This information consists of data about utility, load and the UPS.

The interface port pins and their functions are identified in the following table.

Pin # Signal name Direction (re UPS) Functions

2 TxD Output TxD Output

3 RxD Input RxD / Inverter Off Input

5 Common Common

6 CTS Output Ac Fail Output

8 DCD Output Low Battery Output

9 RI Output +8-24 VDC Power

USB port

Connecting the UPS to your computer is accomplished through the USB port on the back of your

computer. USB compliant hardware and operating system will be necessary including installation of a

UPS driver. The serial port cannot be used when using the USB port. The USB cable is standard and can

be bought separately.

EPO port (emergency power off)

A customer-supplied switch located remotely can be used to open the EPO connection and allows UPS

output receptacles to be switched off. Since the EPO shuts down the equipment immediately, orderly

shutdown procedures are not followed and not by any power management software. The UPS will have to

be manually restarted in order to regain power to the outlets.

Network Transient protector

The network transient protector, located on the back panel, has both IN and OUT jacks, and houses a

single RJ-45 (10BaseT) network connector. Connect the input connector to the jack labeled IN, and the

output connector to the jack labeled OUT.

Load segments

The power management software controls the sets of receptacles known as load segments which provides

organized shutdown and startup of the equipment. Less critical equipment can be turned off during power

outages saving battery power for critical loads. The power management software manual has more details

regarding this. The load group status can be viewed from the LCD display and can be changed if

necessary. These load segments are usually handled with the UPS management software. Refer to chapter

5.2 regarding the two load segments that come with each model.

aut

Max rated values

24Vdc/50mA