ETH484 - 4 Relays at 16A, 8 Digital IO and 4 Analogue Inputs
The ETH484 provides four volt free contact relay outputs with a current rating of up to 16Amp each, 8 digital I/O and 4 analogue inputs. The module is powered from a 12vdc supply which can be regulated or unregulated. The DC input jack is 2.1mm with positive core polarity, DC supplies are required to supply at least 500mA at 12vdc. The relays are SPCO (Single Pole Change Over) types. The normally open, normally closed and common pins are all available on the screw terminals.
A new feature has been added that allows the digital inputs to remotely control relays or digital outputs on ETH002, ETH008, ETH484 or ETH8020. This offers the opportunity to construct a system where an input can control an output anywhere on the earth provided both locations are connected to the network/internet.
Operating Temperature
-40C to +70C
LED Indication
The ETH484 provides a red LED mounted immediately next to each relay to indicate whether it is in a powered state (LED on), there is also two LED's mounted in the Ethernet connector which will flash with Ethernet traffic. Finally there is a green power LED just above the processor.
Relay Power Rating
If the contact load voltage and current of the relay are in the region enclosed by the solid and dotted lines in the figure below, the relay can perform stable switching operation. If the relay is used at a voltage or current exceeding this region, the life of the contacts may be significantly shortened.
| 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 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 |
