American Power Conversion 240-320kW Connecting the System Integration Interface Board SII-board

External Connection

Auxiliary contacts on the main switches transmit SII-board inputs. Lamps on Service Bypass Panel and Battery Breaker Box/Battery Cabinet indicate “green light” for operation of output switches.

SII-board also integrates input facilities for emergency shut-down and temperature compensation of charge voltage for external battery (also used with battery monitoring). “Battery operation” and “Common fault” are the two main status SII-board relay signals.

4.2.1 Connecting the System Integration Interface Board (SII-board)

SII Board

X004 X003

X012

X005

S001

X001

S002

NOTICE!

If the UPS is equipped with an Emergency Power Off (EPO) facility all input sources must be equipped with disconnecting devices.

Terminal rows: X003 and X004 (auxiliary contacts)

When switching Q001, Q002, Q010, Battery Breaker 1 or Battery Breaker 2 from “ON or 1” to “OFF or 0”, the auxiliary contact must open BEFORE the corresponding main contacts are opened. When switching Q001, Q002, Q010, Battery Breaker 1 or Battery Breaker 2 the opposite way from “OFF or 0” to “ON or 1”, the auxiliary contact has to close with a maximum delay of 0.5 seconds from the time the corresponding main contacts are closed.

•This type of auxiliary contact is called a “late make” contact. (This also means that it will “break early” when activated in opposite direction)

990-4049

Installation Guide APC Silcon 240-320kW 480V UPS 25