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Four Axis Encoder Interface Cards
TRODEKS Engineering | Thermocouples, Pressure Transducers, Flow Meters, PID Controllers
EN-EIC-325 (ISA Bus) and EN-EIC-325-PCI (PCI Bus)
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  • Four 24-Bit Up/Down Latch Counters
  • Each Counter has a Programmable
    Set Point Value
  • Provides the Excitation to the Encoders
 Specs
 Manuals (contact with email : [email protected])
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Description

Description

The Models EN-EIC-325 andEN-EIC-325-PCI Four Axis EncoderInterface Cards accommodate mostof the popular optical encodersavailable. The board supports eithersquare-wave or sinusoidal outputencoders, both linear and rotarytypes. It can be directly connectedto up to four encoders and will alsoprovide necessary excitation to theencoders. The card is equipped withfour differential inputs for limit orhome switches/marker/encoderindex and 10(PCI)/11(ISA)single-ended inputs for general use.Also, there are four opto-isolatedoutputs that may be used for set-points,carry/overflow orindex/marker and three opto-isolatedoutputs for general use.The card has four 24-bit up/downlatch counters. Each counter canbe programmed for a preset value.There is an internal status registerfor rapid storing and clearing ofsignals.

Specifications
EN-EIC-325and EN-EIC-325-PCI Cards
Number of Encoders:
4 per board
Multiple Encoder Pulses: 1, 2 or 4(software selectable)
Encoder Outputs:sinusoidal orsquare-wave types
Counter Size: 24-bit up/downwith latched buffer
Method of Communicationwith PC Bus:
I/O port addressing,16 jumper selectable addressranges (ISA), automatic selection(PCI)
Encoder Inputs:
4 Wave Signal Inputs(one per channel)
• Single ended or differential forsquare wave
• Differential for sinusoidal wave4 Wave Index (Marker) Inputs(one per channel)
• Single ended or differential
11 General purpose inputs (ISA)/10 General purpose inputs (PCI),
TTL/CMOS compatible Schmidttrigger single-ended

Encoder Outputs:
4 Event signal outputs
• Can be set to respond to followingevents - setpoint, overflow andindex/marker
• 1 Opto-isolated output perchannel
3 General purpose opto-isolatedoutputs

Power
(all supplied from ISAor PCI bus):

+5 V, 200 mA max; +12 V, 100 mAmax; -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:
EN-EIC-325;153 L x 107 mm W(6.0 x 4.2")
EN-EIC-325-PCI;129 L x 107 mm W(5.1 x 4.2")
Weight:150 g (5.3 oz)

ENCODER SIGNALSSQUARE-WAVE SIGNAL
Signals:
square wave A phaseand 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 sinusoidalsignals (phase A and B shifted by90°) differential
Signal Range (Encoder Output):
Impedance:<1 K: current outputencoders, >± 100 µA; voltageoutput encoders,
>± 100 mV forphases A, B and for the referencemarker/index pulse
Encoder Excitation: 5 Vdc
Light Source Current: 900 mAtotal max,
protected by a polyswitchresettable fuse
Rate: 500 Kpps max:

ENCODER COUNTER
Counter:
24-bit up/down counter+24bit latched buffer per counter
Setpoint: independentlyprogrammable setpoint for eachcounter
Buffers: user may freeze thebuffers without stopping thecounters from counting
Operation: independentoperation mode for each axis
Encoder Pulses:single/multiple encoder pulses(1, 2 or 4 - software selectable)
Counter Reset: counter may bereset when index is reached(software selectable)
Output (EN-EIC-325, EN-EIC-325-PCI)/Interrupt
(EN-EIC-325only) Options for each Encoder(independently selectable):

set-point reached, counter carryflag, index/marker
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