Alpha 630 Counter, Phase and Status Input Module

Description

What is the Alpha 630 Counter, Phase and Status Input Module?
The Alpha 630 is a 20 digital channel input and counter module with quadrature support. The 630 module provides six digital inputs for counting, frequency or status measurements.

Counting and frequency measurements on these channels support inputs to 15KHz. They can also be configured as three phase decoder channels each with two-phase inputs.

Fourteen additional op-to-isolated channels for medium speed counting, low frequency and digital status measurement are included. Ten of these channels support counting and frequency measurements to 1Khz.

A further option supported by the module is 5 auxiliary channels – These, if included, are normally an op-to-isolated status input and 4 relay outputs.

They are intended for local functions, perhaps under the direct control of the module rather than from the host computer.

However they can be controlled from the host and used as additional general-purpose channels. These auxiliary channels are available on the 630A product version. Specific operation can be easily programmed for custom applications.

PRIMARY COMMUNICATIONS INTERFACE
An RS485 multi-drop interface is provided for normal operation with other Alpha series modules and a host computer. It can operate at speeds of up to 230KB with cable lengths of up to 1.2Km.

LOCAL SERIAL INTERFACE
As with most other modules in the Alpha series, a local serial interface can be used to program and monitor operation locally independent of the communications on the RS485 network.

This can be very convenient during installation or used later to diagnose application problems at the measurement site.

Alternatively it could be used with a permanent local process display. Customized display output can be provided. All programming can be stored in secure non-volatile flash memory.