Functions And Signal - LEGRAND Keor LP Manual

Beep Codes
The following table contains common UPS statuses with their beep codes.
UPS faulty, Inverter shut down. All functions inhibited.
Control keypad error
UPS faulty, loads continue to be supplied via Inverter or Bypass.
In battery mode
Battery low
Confirm RS-232 port receiving
Service mode okay
UPS System Block Diagram
Figure 5.1 illustrates the True On-Line Double Conversion architecture of the UPS system. The
major modules consist of:
1) AC-to-DC power converter (rectifier) with PFC control circuit
2) DC-to-AC high frequency inverter
3) Smart battery charger
4) Bank of stationary, maintenance-free batteries
5) DC-to-DC push/pull converter control circuit
6) Static bypass loop
7) Input and output EMI filters
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UPS Status
6 Functions and Signals
Beep Code
Long Continuous Beep
Long Continuous Beep
Single beep every two seconds
Single beep once per second
Quick and short successive beeps
Two quick and short beeps
One quick and short beep
Figure 5.1