The ETH008-B module offers eight volt-free contact relay outputs capable of handling currents up to 16 A. It is designed to be powered by a 12VDC supply, which can either be regulated or unregulated. The DC input jack features a 2.1mm connector with a positive core polarity. To ensure proper functionality, the DC power supply should be capable of delivering at least 500mA at 12VDC. The relays utilized in this module are of the Single Pole Change Over (SPCO) type.
For easy accessibility, the screw terminals provide access to the normally open, normally closed, and common pins of each relay. To indicate the powered state of each relay, a red LED is mounted directly next to each one. Additionally, the Ethernet connector features two LEDs that flash in response to Ethernet traffic. Finally, there is a green power LED positioned just above the processor, serving as a visual indicator of the power status.
Relay Rating
| load type |
Typical applications |
Rating |
Max DC load capacity
|
| AC1 |
Non-inductive or
slightly inductive loads |
16A @ 250V AC |
| AC15 |
Control of
electromagnetic load
(>72VA) |
3A @ 120V AC
1.5A @ 240V AC |
| AC3 |
Control of the motor |
750W |
| DC1 |
Non-inductive or
slightly inductive loads |
16A @ 24V DC |
| DC13 |
Control of electromagnetic
loads |
0.22A @ 120V DC
0.1A @ 250V DC |
Key Features
-
Controlled over Ethernet using simple TCP/IP commands.
-
Relays - 8
-
Power - 12V DC adaptor, supplied separately.
-
Configuration & Test interface - HTTP (webpage).
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Control interface - TCP/IP over Ethernet.
-
Relay current - Up to 16Amp @24vdc or 250vac
-
Connections - Screw Terminals for N/O N/C and Common contacts.
-
Free Android and iPhone Apps are available to remotely control this module.
-
Please note additional options such as power supply, case and cables are available separately.
Free Android and iPhone Apps are available to remotely control this module.
Example Code Download Link:
Java - a command-line application for controlling the module
Perl - Simple example of setting an output active/inactive by TCP
PHP script - Simple example of setting an output active/inactive by TCP
Python V2 - command line application for controlling the module
Python V3 - command-line application for controlling the module
Visual Basic - source code for a simple program, which includes a UDP scan to determine any boards connected to the local network
Visual C# - source code for a simple program, includes a UDP scan to determine any boards connected to the local network
Package Contents
- Ethernet Controlled 8 Channel Relay 16A (ETH008-B) x1
FAQs:
Q: What is the maximum current rating per channel for this relay module?
A: Each channel of this relay module can handle a maximum current of 16A.
Q: Can I control this relay module remotely over a network?
A: Yes, this relay module is designed for remote control. It features an RJ45 Ethernet port for connecting to a network, allowing you to control the relays via software or network commands.
Q: What are the different communication protocols supported by this module?
A: This relay module supports multiple communication protocols, including Modbus TCP/IP and HTTP. This provides flexibility in integrating the module with your existing systems.
Q: Is this relay module suitable for industrial applications?
A: Yes, this relay module is designed for industrial environments. It has a DIN rail mountable design and can operate within a wide temperature range of -25°C to +70°C.
Q: What is the purpose of the dry contact input on this module?
A: The dry contact input can be used to trigger events or actions on the relay module. For example, you could connect a sensor to the dry contact input to automatically activate or deactivate a relay when the sensor is triggered.
