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

990-4053

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Installation Guide APC Silcon 480kW 400V UPS

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APC 990-4053 manual See .2 System configuration