Omega Products EN-EIC-325 User Manual

EN-EIC-325

Four Axis Encoder Interface Card For The ISA Bus

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⻬ Four 24-Bit Up/Down

Latch Counters

⻬ Each Counter has

a Programmable
Setpoint Value

⻬ Provides the Excitation

to the Encoders

The Model EN-EIC-325 Four Axis
Encoder Interface Card for the ISA
BUS accommodates most of the
popular optical encoders available.
The board supports either square­wave or sinusoidal output encoders,
both linear and rotary types. It can
be directly connected to up to four
encoders and will also provide
necessary excitation to the
encoders.

The card is equipped with four
differential inputs for limit or home
switches/marker/encoder index
and 11 single-ended inputs for
general use. Also, there are four
opto-isolated outputs that may be
used for set-points, carry/overflow
or index/marker and three opto­isolated outputs for general use.

$

575

Basic Unit

The card has four 24-bit up/down
latch counters. Each counter can
be programmed for a preset value.
There is an internal status register
for rapid storing and clearing of
signals.

Specifications

Number of Encoders:

4 per board

Multiple Encoder Pulses:

1, 2 or 4 (software selectable)
Encoder Outputs: Sinusoidal
or square-wave types
Counter Size: 24-bit up/down
with latched buffer

Method of Communication
with PC Bus: I/O port

addressing, 16 jumper
selectable address ranges

EN-EIC-325 (ISA Bus), $575, shown slightly larger than actual size

Extended Warranty

Program

SM

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ANALOG INPUT AND

MULTI-FUNCTION CARDS

Each card is supplied with one mating connector for the 44 pin encoder input port. For an
extra mating connector for the encoder input port, order part number EN-EIC-325-CONN, $7.
Each card also includes example software and source code illustrating how to communicate
with the card under DOS as well as Windows drivers (EN-EIC-325 supports Windows 98)
with complete Visual Basic examples.

Ordering Example: EN-EIC-325 four axis encoder interface card for the ISA bus and
OMEGACARESM1-year extended warranty for EN-EIC-325 (adds 1 year to standard
1-year warranty), $575 + 57 = $632.

To Order

(Specify Model Number)

Model No. Price Description

EN-EIC-325 $575 Four axis encoder interface card for the ISA bus
EN-EIC-325-CONN 7 Extra mating connector for encoder input port

ALL MODELS AVAILABLE FOR FAST DELIVERY!

Encoder Inputs:

4 Wave Signal Inputs
(one per channel)

• single ended or differential
for square wave

• differential for sinusoidal wave

4 Wave Index (Marker) Inputs
(one per channel)

• single ended or differential

11 general purpose inputs
TTL/CMOS compatible Schmidt
trigger single-ended

Encoder Outputs:

4 event signal outputs

• can be set to respond to
following events - setpoint,
overflow and index/marker

• 1 opto-isolated output per
channel

3 general purpose opto-isolated
outputs

Power
(All supplied from ISA bus):

+5 V, 200 mA max; +12 V,
100 mA max; -12 V, 50 mA max

Encoder Connectors: Mini D-Sub
44 pin (mating connector supplied)

Output Connectors: D-Sub 9 pin
Operating Ambient: 0 to 50°C

(32 to 122°F), up to 80% RH
non-condensing

Dimensions:

153 L x 107 mm W
(6.0 x 4.2")

Weight: 150 g (5.3 oz)

ENCODER SIGNALS
SQUARE-WAVE SIGNAL
Signals: Square wave A phase

and B phase shifted by 90

°,

single-ended or differential

Compatibility:

HTL 0.5-5V or TTL compatible

Rate: 500 Kpps max

SINUSOIDAL SIGNALS
Signals: Two incremental

sinusoidal signals (phase
A and B shifted by 90

°)

differential

Signal Range (Encoder Output)
Impedance: <1 KΩ: current output

encoders, >+

100 µA; voltage
output encoders, >+ 100 mV for
phases A, B and for the reference
marker/index pulse

Encoder Excitation: 5 Vdc
Light Source Current:

900 mA total max, protected

by a polyswitch resettable fuse

Rate: 500 Kpps max

ENCODER COUNTER:
Counter: 24-bit up/down counter

+24 bit latched buffer per counter
Setpoint: Independently

programmable setpoint for each
counter

Buffers: User may freeze the
buffers without stopping the
counters from counting

Operation: Independent
operation mode for each axis

Encoder Pulses:

Single/multiple encoder pulses
(1, 2 or 4 - software selectable)
Counter Reset: Counter may be
reset when index is reached
(software selectable)

Output/Interrupt Options
for each Encoder
(Independently Selectable):

Set-point reached, counter carry
flag, index/marker

OMEGACARESMextended warranty program
is available for models shown on this page.
Ask your sales representative for full details
when placing an order. OMEGACARE

SM

covers parts, labor and equivalent loaners.

EN-EIC-325 (ISA Bus), $575, shown smaller
larger than actual size