External Connection - Connecting the UPS
990-2440 AIS 5000 400V Installation Manual 21
Emergency Power Off (EPO)
The UPS is equipped with and EPO input (X006) on the external connection board (part of the low-
voltage section). The battery breaker is equipped with a shunt trip function (X061: 3, 4).
Communication interface
The 3-port communication interface (located in the low voltage section) is used when an interaction
between UPS and an electrical device has to be established. The main purpose is to ensure a
controlled shut-down of the device in case of failures in the mains power supply.
Shunt Trip function (120Vac)