Introduction
WebRelay Users Manual
1.5 Connectors & Indicators
WebRelay has two removable terminal connectors and an Ethernet connector. The three-position
terminal connector is used to connect the relay to the load. The five-position terminal connector provides
power to the internal web server, and has connections for the optically-isolated input and +5VDC output.
Relay
The WebRelay has an internal high-current relay. Screw terminals are provided for the
Common,
Normally Open,
and
Normally Closed
contacts of the relay. The screw terminals are internally connected
directly to the relay with no internal fuse or other over-current protection. The relay contacts are isolated
from all other circuits.
Digital Input
The WebRelay has an optically-isolated digital input. The optically-isolated input provides electrical
isolation between the digital input and the low voltage control circuits of the WebRelay.
Power Supply
Connect a 9-28VDC source to the Vin+ and Vin- terminals
LED Indicators
Relay
:
Green, Illuminated whenever the relay is energized. When the relay coil is energized,
the NO (Normally Open) contact is closed and the NC (Normally Closed) contact is open. The
load device that is connected to the relay contacts may be on or off when the coil is energized
depending on how its wired.
Input
:
Green, Illuminated when a sufficient voltage is applied to the opto-coupler input
Link
:
Green, Power is on and WebRelay is properly connected to a network
Act
:
Amber, Flashes when network is active
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Xytronix Research & Design, Inc.
