Products

    All Products   

    Transducers

    Interfacing 

ETHP4 - Four Channel Relay Interface For DDC

Features: Inexpensive, microprocessor based design Four Independent Channels Compact Size Input/Output and per channel isolation Universal Input (AC/DC) Outputs rated up to 1A @ 60VDC Easy "snap-in" wiring

Application:

The ETHP4 is a four-channel dry contact relay interface board designed for use with DDC systems that do not have ‘on-board’ relay output.

The ETHP4 is ideal for use as an interface to heat pumps or other loads that require a dry contact output. The board may be used with controllers that offer 24VAC (triac) or 10VDC analog outputs.
 

Product Description:

The ETHP4 was designed to interface DDC controllers without relay outputs to devices that require switching via a dry contact. The ETHP4 features four output channels (isolated from both the input and each other). Each output functions as a N.O. dry contact relay rated up to 1A @ 60V (AC/DC).

The relays may be used for direct switching of low voltage AC or DC loads (up to 1A), or as pilot relays providing three-way isolation.

On board headers allow for jumpering the contacts to provide excitation to “wet” the relay outputs via only one power supply wire (ideal for heat pump control).

The board features a 5.08mm vertical connector that plugs directly onto a wide variety of DDC systems. On board snubbing circuitry protects the relays from EMF. The ETHP4 inputs may be triggered by 24V AC triac outputs, or 10V DC analog outputs.

ETHP4 mounted on a DDC Panel

 

Specifications:

Information:

Datasheet	PDF
Wiring Diagram	PDF

copyright (c) Elkor Technologies Inc.