American Power Conversion 480kW manual Introduction, Display Unit

Introduction

1.0 Introduction

This UPS system is designed to offer reliable and problem-free power supply for several years. The system requires only a minimum of maintenance, but we recommend you follow the maintenance guidelines described in section 6.0 Maintenance & Testing.

1.1Display Unit

The display unit (located on the front of the UPS) is the link between the user and the UPS and consists of a display, an alarm LED indicator and a keyboard. The display reads parameters, measured values and alarm messages. Alarms and the pressing of keys will activate a back light which is set to switch off automatically after 5 minutes of inactivity.

By pressing and simultaneously you increase the back light contrast. The pressing of

and simultaneously decreases the contrast.

The LED alarm is linked to an acoustic signal indicating incorrect operation. Alarms will change the LED light from green to red. Use keyboard to program operating parameters and to display parameters / alarm messages.

LCD-display with back light

Alarm LED

Green: OK

Red: Alarm

Keyboard

NOTICE!

Display accuracy is ±2%, ±1digit.

990-4058GB

4 User Guide APC Silcon 480kW 400/415V UPS