A302 - 128-Channel Binary I/O Card (Product Discontinued)

The A302 is an input/output VMEbus target board for 128 binary process signals. The I/Os are divided into four optically isolated units. The card is used for input/output of digital signals with different voltage levels and ground references.

For each unit 32 channels are driven to a 44-pin D-Sub connector. Each channel can be either input or output.

The binary inputs/outputs can be universally used in industrial systems. They are optically isolated from the system, which is essential for advanced automotive and industrial applications.

Features

  • 1-slot A24/D16 VMEbus slave
  • 4 optically isolated units
  • 32 channels for each unit
  • Individual use of each channel as input or output
  • Individual edge-triggered interrupts
  • Input/output load on ground
  • High-side output switches
  • Output current 1.9 Aper channel or 16 A per unit
  • Over-current and over-temperature protection

Specifications

Binary I/Os
  • 128 binary signals
    • 4 optically isolated units
    • 32 channels for each unit
  • Individual use of each channel as input or output
  • Individual edge-triggered interrupts
  • Input/output load on ground
  • High-side output switches
  • High output current
    • Max. 1.9A per channel
    • Max. 16A per unit
  • Over-current and over-temperature protection
Output Characteristics
  • Output voltage range: 12V..32V
  • Output current log. 0: max. 10mA
  • Output current log. 1: max. 1.9A
  • Switching time for output change: < 200µs
  • Isolation voltage (optocoupler): 500V DC
Input Characteristics
  • Input voltage min.: 0V
  • Input voltage max. external supply voltage (12..32V)
  • Voltage level log. 0: 0V..6V or open
  • Voltage level log. 1: 12V..32V
  • Input current log. 1: 2.03mA @ 24V
  • Switching threshold: 9.2V @ 0.78mA typ.
  • Switching time for input change: min. 33µs, max. 44µs
  • Excess voltage protection: max. +47V
Peripheral Connections
Via front panel on four shielded 44-pin HD-Sub receptacle connectors
VMEbus
  • Only one slot required on the VMEbus
  • A24/A16/D16/D08(EO) slave
  • D08(O) interrupter
Electrical Specifications
  • Isolation voltage
    • 500V DC between isolated side and digital side
    • 180V DC between the channels
    • Voltage between the connector shield and isolated ground is limited to 180V using a varistor; AC coupling between connector shield and isolated ground through 47nF capacitor
  • Supply voltage/power consumption:
    • +5V (4.85V..5.25V), 106mA
    • +3.3V (3.0V..3.6V), 27mA
    • +24V (external supply voltage 12..32V), 78mA (total for all units)
  • MTBF: 98,000h @ 50°C (derived from MIL-HDBK-217F)
Mechanical Specifications
  • Dimensions: standard double Eurocard, 233.3mm x 160mm
  • Weight: 280g
Environmental Specifications
  • Temperature range (operation):
    • 0..+60°C or -40..+85°C
    • Airflow: min. 10m³/h
  • Temperature range (storage): -40..+85°C
  • Relative humidity range (operation): max. 95% without condensation
  • Relative humidity range (storage): max. 95% without condensation
  • Altitude: -300m to + 3,000m
  • Shock: 15g/11ms
  • Bump: 10g/16ms
  • Vibration (sinusoidal): 2g/10..150Hz
  • Conformal coating on request
Safety
PCB manufactured with a flammability rating of 94V-0 by UL recognized manufacturers
EMC
Tested according to EN 55022 (radio disturbance), IEC 61000-4-2 (ESD) and IEC 61000-4-4 (burst)
Software Support

Downloads