Revision 3.1
WebRelay
TM
Users Manual
1.2 WebRelay
TM
Models Available
WebRelay
TM
is currently available in four models. There are only two differences between the four models. One
difference is the power supply requirements and the other difference is the input voltage range on the optically-
isolated input.
Part Number
Power Supply Requirements
Optically-Isolated Input Voltage Range
X-WR-1R12-1I5-5
5VDC
3-12VDC
X-WR-1R12-1I5-I
9-28VDC
3-12VDC
X-WR-1R12-1I24-I
9-28VDC
11-28VDC
X-WR-1R12-1I5-E
Power Over Ethernet or 5VDC
3-12VDC
1.3 Connectors & Indicators
WebRelay
TM
has two removable terminal connectors and an Ethernet connector. One terminal connector is a large, 3-
terminal connector which is used to connect the load to the relay. The other terminal connector is a smaller, 5-
terminal connector which is used to provide power to the internal web server, connect the optically isolated input, and
provide a 5VDC output.
There are four LED indicators on WebRelay
TM
labeled INPUT (green), RELAY (green), LINK (green), and ACT
(amber). Note that the LINK and ACT LEDs are located on the Ethernet connector. The INPUT LED indicates that
there is a voltage applied to the optically-isolated input. The RELAY LED indicates that the internal relay coil is
energized. When the relay coil is energized, the NO (Nornally 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. LINK means WebRelay
TM
is properly connected to an Ethernet network. It
also indicates that the unit is properly powered. The ACT LED flashes when activity is detected on the network.
1.4 Example Configurations and Applications
WebRelay
TM
is very versatile and can be used in many applications. Several basic installation schemes are illustrated
in this section.
Xytronix Research & Design, Inc.
page 6
Input Indicator Light (Voltage applied to Input)
Relay Indicator Light (Relay coil energized)
VIN Terminals (Connect DC Power Supply Here)
Optically-Isolated Input Terminals
5 Volt Output Terminal
Relay Terminals
(Common, Normally Open, Normally Closed)
Ethernet Connector
Network
Linked
Light
Network
Activity
Light
Removable
Terminal
Connectors