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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