OnLine Power Battery Backup System - Manual (Page 59)

OLP
Three Phase UPS Systems
6 0 INTERFACE
6. INTERFACE CONNECTIONS
All interfaces are connected from 3R PCB. See the figure below.
6.1. Dry Contacts
8 terminals of dry contacts are provided. These terminals are normally open (non-
conducting). When an event occurs, the terminal will close (conduct). Maximum
contact rating is 16A/250VAC(16A/30VDC). The events are shown below.
IN VON – Closed whenever the inverter is on, open when the inverter is off.
OVL – Closed whenever the UPS is overloaded.
6-1