BEI Sensors Serial to Parallel Converter Module User Manual

Electronic modules, Bei sensors, Divide-by module

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Electronic Modules

Divide-By Module

BEI Sensors

7230 Hollister Avenue

Goleta, CA 93117

www.beisensors.com

Tel: 800-350-2727

Fax: 805-968-3154

Specification No.:02086-001

Rev 10-13

Electronic Modules

Serial to Parallel Converter for Absolute Encoders

BEI Sensors

BEI’

s serial-to-parallel converter module takes serial data from any

BEI

Serial Synchronous Interface (

S3

) or

RS

-

422

Interface (

S1

) encoders and converts

it to a parallel output. This eliminates the high cost and noise susceptibility of long, parallel cable runs, enabling the simplicity of a serial output encoder

and a low cost twisted pair cable to interface with a standard

PLC

or controller. The bright

LED

indicators give visual status for deserialization, testing and

troubleshooting.
Serial input, either

SSI

or

RS-422

is easily selectable by a Format Select terminal directly on the board. In

SSI

mode, the on-board clock generates pulses

to signal the encoder to provide data. Data is received serially and converted to a parallel format. Clock frequency is selectable by a Speed Select terminal,

again directly on the board. For

100

feet or less, the

1.25 MH

z mode can be used and for longer distances, up to

500

feet, a

200

k

H

z rate is available.

In

RS-422

mode, data is received asynchronously from the encoder and converted to a parallel format. Speed Select input is used to set the baud rate:

19.2

k

B

aud for most applications, up to

500

feet;

115.2

k

B

aud for shorter runs below

100

feet.

See the

BEI

specifications for Serial Synchronous Interface (

S3

) and

RS-422

for additional specifications, data format information and timing diagrams.

The module accepts inputs from

5

to

28 VDC

and provides three output options:

V

out =

V

in;

V

out =

5 V

; and

V

out =

O

pen

C

ollector. The compact

DIN

rail

package is

105

mm wide,

78

mm high and only

45

mm high and mounts to standard

DIN

Rail,

EN 50 022, 35

mm X

7.5

mm, included with the module.

Features:

SSI OR RS422 SELECTABLE ON BOARD

TWO TRANSMISSION RATES TO ACCOMMODATE LONG
CABLE RUNS

HIGH NOISE IMMUNITY

CAN BE USED FOR SYSTEM TROUBLESHOOTING

SAVES INSTALLATION COSTS

COMPACT PACKAGE

Output

BEI Model Number

BEI Part Number

5 - 28 Volts

EM-DR3-SP-5-TB-28V/V

60007-001

5 Volts

EM-DR3-SP-5-TB-28V/5

60007-002

Open Collector

EM-DR3-SP-5-TB-28V/OC

60007-003

Ordering Information:

Controller Side:

Encoder Side:

Pin

Description Notes

D14

thru

D0

Parallel Data

Outputs

For the SSI selection under pin FMT, data

is MSB justified.
For the RS422 selection under pin FMT,

data is LSB justified.

DVD

Data Valid

Logic LO = Data Valid
Logic HI = Data not valid (transitioning)

FMT

Format Select

Logic HI (N/C) = SSI
Logic LO (0V) = RS422 (Asynchronous)

EN

Output Enable

Logic HI (N/C) = Output active
Logic LO (0V) = Inactive (High Impedance)

SPD

Speed Select

SSI: Logic HI (N/C) = 1.25 MHz

Logic LO (0V) = 200kHz

RS422: Logic HI (N/C) = 19.2 kBaud

Logic LO (0V) = 115.2 kBaud

0V

Supply

Common

Logic LO available for format and speed

selections

NOTE: On Format, Enable and Speed selects, internal 10KΩ pull-ups to Vs provide default

Logic HI

Pin

Description Notes

0V

Supply

Common

Connect either 0V pin to power supply

common. This should be the same supply

common as used on the encoder.

0V

Supply

Common

Connected internally – see note above

Vs

Supply Voltage Provide 5 to 28 volts supply.

D -

Data minus

Connect to Data – line from encoder

D +

Data plus

Connect to Data + line from encoder

CL -

Clock minus

Connect to Clock - line from encoder (SSI

only). If using RS422, then N/C

CL +

Clock plus

Connect to Clock + line from encoder (SSI

only). If using RS422, then N/C

DIR

N/C

Leave this disconnected

NOTE: LED indicators on key data and control lines (Logic HI = Red, Logic Lo = Green)

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