Tescom T-3250, User Manual, Page: 12 / 42

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II. FRONT PANEL
2.1 Introduction
The front panel of UPS, consisting of a 2 lines alphanumeric display, 7 status lamps, plus 5 function keys,
allows the complete monitoring of the UPS status. The mimic flow diagram helps to comprehend the operating
status of the UPS. By using the function keys operator can moves on menus and change some parameters.
Figure 2-1 Operator control and indicator panel
L1 : If lamp is lit mains is okay
L2 : If lamp is lit the rectifier is operating
L3 : If lamp is lit UPS is operating on batteries
L4
: If lamp is lit static bypass is active and load is connected to mains voltage
L5 : If lamp is lit mechanical bypass switch is on
L6 : If lamp is lit inverter feeds the load
L7 : If lamp is lit S4 power output switch “1” on position.
There are 5 function keys on front panel these are ENTER, UP, DOWN, PLUS and MINUS.
UP and DOWN keys help moving on menus, PLUS and MINUS keys select options, ENTER key means the
selected option or menu is valid.
NOTE : ALL MESSAGES SHOWN IN THIS CHAPTER IS VALID FOR MC VERSION OF UPS
CONTROL SOFTWARE.
2.2 Alarms And Status Messages
Totally 64 alarm and status messages are used in UPS which helps the user. Messages are coded for easy
dialog with service organization, all messages contains numbers A1-A2-A3….An. Messages and events in UPS
are recorded to a log file with event time and date
ALARM DESCRIPTION
A1 BYPASS FAILURE Bypass system failure
Possible Causes: 1) Maybe bypass parts are defective call service
A2 INVERTER FAILURE Inverter digital start system is failed
Possible Causes: Internal failure. Call service.
A3 3 OVERTEMP Overload in UPS repeated at 3 times in 30 min.
Possible Causes:
1) Overload
2) Fan failure or durty air inlets, outlets
3) Bad UPS settling
L1
L2
L3
L4
L5
L6 L7
ENTER