Section 1: Introduction; Features; Webrelay-Quad Models Available; Connectors & Indicators - ControlByWeb WebRelay-Quad X-WR-4R1-5 User Manual

Revision 2.2b

Section 1: Introduction

WebRelay-Quad is a compact, four-relay module with a built in web server. It can be controlled and/or monitored
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over any IP network including private networks, IP-based industrial control networks, and the Internet. Users can
operate WebRelay-Quad
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may control and monitor WebRelay-Quad
the network and reading XML status pages from WebRelay-Quad
WebRelay-Quad has many applications and is only limited by imagination. It works very well as a stand-alone
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device that can be controlled using a web browser or as a convenient way to add I/O to a computer. It can be used in
industrial applications to control motors, lights, coils, pumps, valves, etc.

1.1 Features

WebRelay-Quad is very simple but has many features. Some features include...
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No programming required
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Easy to use as a stand alone device or as part of a large control system
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Built-in web server provides simple, web based configuration and control
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Control page can be customized with appropriate text and buttons
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10/100 Ethernet connectivity
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Four, 24Volt 1-Amp relays
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Removable terminal connectors (included) simplifies wiring and service
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Custom applications can control WebRelay-Quad
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status.
Modbus/TCP protocol support provides inter-interoperability with devices/software from other
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manufacturers.
Password protection
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Selectable TCP ports
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On/Off or pulse mode
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DIN-Rail or Wall Mount
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1.2 WebRelay-Quad TM
WebRelay-Quad is currently available in three models. The only difference between the three models is the power
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supply requirements.
Part Number
X-WR-4R1-5
X-WR-4R1-I
X-WR-4R1-E
1.3 Connectors & Indicators
WebRelay-Quad has a removable terminal connector and an Ethernet connector. The terminal connector is used to
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provide power to the internal web server, and is used to connect external electrical loads to the relay contacts.
There are seven LED indicators on WebRelay-Quad
Four LEDs (green) labeled Relay 1-4 which indicate that the corresponding relay coil is energized. When the relay
coils are energized, the NO (Nornally Open) contacts are closed and the NC (Normally Closed) contacts are open.
The load device that is connected to the relay contacts may be on or off when the coil is energized depending on how
it is wired. The LINK (green) LED indicates that WebRelay-Quad
The ACK LED (amber) flashes when there is network activity. Note that the LINK and ACT LEDs are located on
the Ethernet connector.
Xytronix Research & Design, Inc.
using a web browser or a custom application. Computers, PLCs, or automation controllers
without user intervention. This works by sending text commands over
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Models Available
Power Supply Requirements
5VDC
9-28VDC
Power Over Ethernet or 5VDC
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, or by using Modbus/TCP protocol.
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with simple text commands and read XML formatted
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. The Power LED (green) indicates that the unit is powered.
is properly connected to an Ethernet network.
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WebRelay-Quad Users Manual
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page 4