Relay Option - l-com IES Series User Manual

2.1.2 Relay option

Additionally, a dry contact relay connection is available. In the event of a power supply failure, you can attach
an audible or visual alarm such as a Klaxon to the relay to alert plant personnel a power supply has failed.
This feature works with a single or dual power supply configuration. See Figure 2-4.
Fig. 2-4
To connect power to the switch first make sure the AC/DC power supply is NOT connected to an AC power
outlet. Connect the + and – conductors from the AC/DC power supply to the V1+ and V1- terminals
respectively. If a redundant DC power configuration is to be used connect the second set of conductors to
V2+ and V2- respectively.
Grounding
Be sure to properly ground the IES switch. Failure to properly ground the switch may result in damage or
destruction of the switch or attached devices.
IES Series User Manual V. 2.0 9