Presentation

Control panel (cont.)

See figure 19.

"Rectifier/charger" light 1

◗light off: rectifier/charger OFF;

◗light shines green: rectifier/charger ON;

◗light shines red: rectifier/charger fault, the stored alarm indicates one or several of the following faults:

◗input switch Q1 open,

◗protection fuse at the rectifier/charger input (FUE) blown,

◗abnormally high internal rectifier/ charger temperature,

◗abnormally high battery charge current,

◗abnormally high battery voltage,

◗fault, non-calibration or non- personalisation of the electronic control board for the rectifier/charger,

◗fault on the electronic power-supply board.

"Battery light" 2

◗	light off: battery float charging;
◗	light flashing green: battery
recharging;
◗	light shines green: load on battery
power;

"Inverter" light 4

◗light off: inverter OFF;

◗light flashing green: inverter starting, inverter ON but not connected to the load;

◗light shines green: normal inverter operation;

◗light shines red: inverter fault, the stored alarm indicates one or several of the following faults:

◗inverter shutdown due to inverter output voltage outside specified tolerances,

◗protection fuse at the inverter output (FUS) blown,

◗abnormally high inverter-output transformer temperature,

◗abnormally high inverter temperature,

◗output-voltage fault (amplitude or phase) (parallel UPSs),

◗fault, non-calibration or non- personalisation of the electronic control board for the inverter,

◗fault on the electronic power-supply board.

"Load" light 5

◗light off: load not supplied;

◗light shines green: load supplied via the inverter or the bypass AC source (via the static bypass).

Buzzer 6

The buzzer sounds in the following situations:

◗load supplied by the bypass AC source;

◗load on battery;

◗operating problems.

It sounds slowly and discontinuously for a minor problem or when the inverter is on battery power.

When the alarm "LOW BATTERY SHUTDOWN" is activated, the buzzer sounds more rapidly. Finally, if the inverter shuts down, the beep is loud and continuous. The buzzer may be reset by pressing a button. If the buzzer is reset, a higher level alarm will set it off again.

"Full-shutdown" button 7

Pressing this button shuts down the entire UPS (shutdown of the inverter and rectifier/charger, opening of the battery circuit breaker and activation of a relay contact on the Media Contacts 11 board).

"Inverter ON" button 8

This button is used to start the inverter locally.

◗ light flashing red: low-battery

shutdown warning;

◗ light shines red: battery at end of

backup time and circuit breaker QF1

open, or battery fault.

"Static-bypass" light 3

◗light off: bypass AC source within specified tolerances and static bypass open;

◗light shines green: static bypass closed;

◗light shines red: the stored alarm indicates one or several of the following faults:

◗bypass AC source voltage or frequency outside specified tolerances,

◗static-bypass fault,

◗abnormally high internal static- bypass temperature,

◗static-bypass ventilation fault,

◗power-supply fault for the static- bypass control function,

◗fault on the electronic board controlling the transfer function,

◗non-calibration or non- personalisation of the electronic control board for the inverter,

◗fault on the electronic power-supply board,

◗fault on monitoring the "inverter ready" response channels (parallel UPS system).

"Inverter OFF" button 9

This button turns the inverter off locally.

1	2	3	4	5		6	7
1
2
							8
23							9
10	11		12	13	14	15	16
					V	A	W.Hz
							18
				17			19
						fault
					20	21	22

Fig. 19

APC 20 - 200 KVA user manual Presentation