Advantech EKI-2526M - Manual (Page 25)

17 Chapter2
2.5 Power Connection
The EKI-2525M/2526M supports dual +12 ~ 48 V
DC
power inputs and power-fail relay
output.
Figure 2.9: Pin Assignment of the Power Connector
You can connect an alarm indicator, buzzer or other signaling equipment through the
relay output. The relay opens if power input 1 or 2 fails ( “Open” means if you connect
relay output with an LED, the light would be off).