Specifications

Revision 2.4 WebRelay-Quad™ Users Manual
14-pin connector pinout:
Pin Description
VIN+ Power supply input. Connect to the positive side of the appropriate power supply. DO
NOT EXCEED MAXIMUM POWER SUPPLY VOLTAGE.
Model X-WR-4R1-5
5VDC Power supply
Model X-WR-4R1-I
9~28VDC Power supply
Model X-WR-4R1-E
Power Over Ethernet model. These units do not require a power supply to be connected
to this pin when the unit is connected to an 802.3af compliant network. Alternatively, this
model can be powered using a 5VDC power supply.
VIN- Power supply ground (-) connection.
1C Relay 1 Common Contact
1NC Relay 1 Normally Closed Contact
1NO Relay 1 Normally Open Contact
2C Relay 2 Common Contact
2NC Relay 2 Normally Closed Contact
2NO Relay 2 Normally Open Contact
3C Relay 3 Common Contact
3NC Relay 3 Normally Closed Contact
3NO Relay 3 Normally Open Contact
4C Relay 4 Common Contact
4NC Relay 4 Normally Closed Contact
4NO Relay 4 Normally Open Contact
2.2.1 Power Supply Connection
WebRelay-Quad™ requires power for its internal logic circuits. Connect appropriate power supply
to the Vin+ and Vin- terminals. Alternatively, WebRelay-Quad™ units with the Power Over
Ethernet option may be powered through the Ethernet connection instead of using an external
power supply.
Multiple WebRelay-Quad™ units may be connected to a single power supply by connecting the
power supply input terminals in parallel. The power supply must have a high enough current rating
to power all units connected (see specifications for current requirements for a specific model
number).
WebRelay-Quad™ units with the Power Over Ethernet option may be connected to an 802.3af
compliant Ethernet port instead of connecting an external power supply. In this case, WebRelay-
Quad™ is powered through the network port. In an 802.3af compliant network, a 48 Volt power
source is injected into the Ethernet line. This power source is provided by an 802.3af compliant
hub, switch, or power injector which may be located in a utility closet which could be a distance
away from WebRelay-Quad™. This option is very useful for installations where local power is not
available. The power injector may inject the 48 Volt power source through the data lines or the
spare lines in the Ethernet cable. DO NOT USE A POWER INJECTOR THAT APPLIES A
VOLTAGE TO BOTH THE DATA LINES AND THE SPARE LINES.
Xytronix Research & Design, Inc. page 13