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Alpha 630

Alpha 630 Counter, Phase and Status Input Module

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 opto-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 optoisolated 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 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. Customised display output can be provided. All programming can be stored in secure non-volatile flash memory.

 

Features

• Counting, Phase, Status in compact DIN rail module

• Frequency measurements

• Quad phase decoder channel pairs

• Programmable Measurement Types

• Auxiliary I/O (630A option)

• Second local diagnostic serial interface 4 High speed comms 230KB (460KB)

Specification Details

Number of channels: 6

Input threshold: 3.5V

Input operating range: 3.5-12V

Input count rate: 15KHZ

Isolation Each channel is individually isolated

 

Status LED'S

Colour:  Red

Functions: Power

                       RS485 Communications

                       RS232 Communications

                       Channel 1-20 – Status level present. Status of Auxiliary channels if fitted

 

Phase Decoder Channels

Number of phase decoder inputs: 3 pairs (using the 6 freq channels)

Input threshold: 3.5V

Input operating range: 3.5-12 V

Resolution: Two pairs offer discrimination of each edge 4 counts per pulse pair

Third channel operates at 1 count per two pulses

Input count rate: 15KHZ

Minimum width/gap: 10US

Isolation: Each channel is individually isolated

Time base accuracy: Typically 0.03%

 

Status Counter Channels

Number of status channels per module: 14

Measurement functions: Status, counting, frequency

Max count rate: 1000/sec each channel (4 channels), 100/sec on each channel (6 channels)

Input threshold: 4V

Input operating range: 4-24V

Isolation: Each channel is individually isolated

Update rate – counters or status function: 1000/sec 4 channels, 100/sec 14 channels

 

Auxilary Channels (Option-630A)

Number of opto-isolated inputs: 1

Number of relay outputs: 4

Relay output rating: 48V 2A,Fused

Isolation: Note the input and 3 of the Outputs share a common terminal

 

Module Dimensions

Dimensions 180x120x65mm DIN Rail mounting

Weight 0.6Kg

Communications

RS485 Communications Interface: Baud rates to 230KB supported (460KB is available for some applications)

Measurement throughput of link: 10,000/sec (depends on application) 2000-4000/module type.

Local RS232 Interface: Baud rates 38k4 supported.

 

Calibration

Software - No internet access required.

 

Environmental

-20 to 60C ambient.0-90%RH

 

Power Requirements

12-36V DC or 24V AC

630 -  Power <3W

630A - Power <5W

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