Service manual

5.2.7 User Interface
5.2.7.1 Front Panel
The front panel consists 2 parts: push button and LCD indicator.
The push button is used to turn on and off the UPS, or do some simple setting.
Fig.5.2.7.1 LCD display panel
All UPS information including the input, the output, the battery, the load and the status
of UPS are displayed on the LCD screen. The detailed illumination of LCD display can be
found in the user manual.
When UPS is out of order, the fault code will be displayed and the buzzer will beep
continuously. The detailed definition of the warning or fault code can be found in later
section.
5.2.7.2 Communication Interface.
The communication interface provides a means for using computer to manage the UPS,
on the rear panel of the UPS, a standard RS232 port and an intelligent slot are provided.
With dedicated software, output voltage, frequency can be set via the RS232 port; also
status of the UPS can be monitor.
The intelligent slot can accept SMNP, AS400, USB adaptor card, for more flexible
application solution.
The communication interface circuit is mainly located on the global controller board; the
circuit provides isolation and voltage level transform function for communication; the
communication protocol is implement by the CPU.
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