Apc SILCON 990-4053 User Manual download pdf (Page 18)

18 Installation Guide APC Silcon 480kW 400V UPS

990-4053

External Connection

## Delay programmable in configuration stack : “Common fault delay”. Settings 0,10,20,30

seconds.

See section 5.2: System configuration

NOTICE!

Alarm Trigging Events 1-2-3-9-10-11-13 activates the corresponding alarm relay after the delay.

Alarm Trigging Events 4-5-6-7-8-12-14-15 activates the corresponding alarm relay momentarily.

Common fault relay 16 is activated at the same time as relay 1-2-3-4-5-6-7-12-13-14-15, or in

any of the below situations.:

• Internal power supply fault

• System locked in operation mode

• Internal memory fault

• Internal communication fault

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Apc SILCON 990-4053 User Manual Page 18