LevelOne IES-1085 - Manual (Page 18)

User Manual Page 18
Step 2: Disconnect the power cord if you want to shut down the switch.
Back View
Alarms for Power Failure
Step 1: There are two pins on the terminal block used for power failure detection. It
provides the normally closed output when the power source is active. Use this as a
dry contact application to send a signal for power failure detection.
Term
inal Bl
ock
PW1
+ 47 57VDC
Power Ground
PW2
+ 47 57VDC
Power Ground
Earth Ground
Relay Output 1A @ 250VAC
Relay Alarm warning signal disable for following:
3. The relay contact closes if Power1 and Power2 are both failed but Power3 on
4. The relay contact closes if Power3 is failed but Power1 and Power2 are both on
DC
Jack PW3 DC Jack 47 to 57VDC
Special note:
The relay output is normal open position when there is no power to the switch.
Please do not connect any power source to this terminal to prevent shorting your
power supply.