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Maintenance bypass switch open:
OFF
Normal operating condition (Load supplied by inverter)
Warning indicates in the display:
"Manual bypass is opened"
ON MANUAL OR MAINTANENCE BYPASS MODE, THE LOAD IS NOT PROTECTED AGAINST ANY
MAINS FAILURES OR MAINS DISTURBANCES.
Module Display – Control Panel
7.5
The user-friendly control panel is composed of three parts:
• LCD DISPLAY
• MIMIC DIAGRAM (dual color-LED)
• BUTTONS
• BUZZER (generating a sound when an alarm is active)
The 2 x 20 character LCD simplifies the communication with the UPS and provides the necessary monitoring information about the UPS.
The menu driven LCD enables the access to the:
• Event register (event log)
• Show measurements such as U, I, f, P, Q, S, load %, battery runtime and others
• Perform commands like start-up and shut-down of UPS and others
• Load transfer from INVERTER to BYPASS and vice-versa
• Diagnosis (SERVICE MODE)
• Adjustments and testing
7.5.1
LED Indicators
The mimic diagram serves to indicate the general status of the UPS. The LED-indicators show the power flow status and in the event of
mains failure or load transfer from inverter to bypass and vice-versa. The corresponding LED-indicators will change colors from green
(normal) to red (warning).
The LEDs LINE 1 (rectifier) and LINE 2 (bypass) indicate the availability of the mains power supply.
The LEDs INVERTER and BYPASS if green indicate which of the two is supplying power to the critical load. When the battery is supplying
the load due to mains failure the LED-indicator BATTERY is flashing.
The LED-indicator ALARM is a visual indication of any internal or external alarm condition. At the same time an audible alarm will be
activated.
Figure 22: Module Control Panel
Conceptpower DPA 500 480V UL │94-12-043275 A02 39
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