PA1508 Isolated Digital I/O Board



하드웨어 특징

8 Digital Input Channels, 24V, Isolated

square02_darkbluegreen.gif 2 Connection Lines per Input Channel

square02_darkbluegreen.gif Parallel Acquisition of Digital 24V Signals

square02_darkbluegreen.gif Each Input Channel has its own GND lines


8 Digital Output Channels, 24V, Isolated

square02_darkbluegreen.gif Each Output Channel can be Triggered

  Independently from the others

square02_darkbluegreen.gif The Output Channels are Current-Limited

  and Suitable for Loads with High

  Inductive Currents

square02_darkbluegreen.gif 2 Diagnostic Outputs Generate LOW level

  at Overtemperature

square02_darkbluegreen.gif Watchdog can be activated through

  Software Readable

square02_darkbluegreen.gif At Power/ON the Outputs are reset to "0"

square02_darkbluegreen.gif Addressing through DIP switches


CE Certification

square02_darkbluegreen.gif EN 50082-2, EN 55011, EN 55022








Safery Features

square02_darkbluegreen.gif Optical Isolation 1000V

square02_darkbluegreen.gif Voltage Supervision

square02_darkbluegreen.gif Safely for the Input Channels : Voltage

  reversal protection, LC Filter

square02_darkbluegreen.gif Safely for the Output Channels

  - Overtemperature Protection

     Shutdown Logic at approx. 125-140

  - Short-circuit Current at 1.5A

  - Shut-down Logic when the External

     supply voltage drops below 5V

square02_darkbluegreen.gif External Supply Voltage

  - Overload Protection : Self-resetting fuse

     ( electronic Fuse )

  - Overvoltage Protection through Varistor

     and Transorb Diode

  - Screened through LC Filters


지원 소프트웨어

square02_darkbluegreen.gif Standard Drivers :

  - Windows 2000/NT/98/95

  - Windows 3.11, MD-DOS

square02_darkbluegreen.gif LabVIEW 5.01

square02_darkbluegreen.gif Samples programs :

  - Microsoft VC++ 5.0/Microsoft C 6.0

  - Borland C++ 5.01/Borland C 3.1

  - Visual Basic 5.0

  - Delphi 4.0

  - Turbo Pascal 7.0

square02_darkbluegreen.gif On request :

  - LabWindows/CVI 5.01


응용 분야

square02_darkbluegreen.gif Industrial I/O Control

square02_darkbluegreen.gif Signal Switching

square02_darkbluegreen.gif Monitoring of 24V Signals

square02_darkbluegreen.gif Activation of Alarms

square02_darkbluegreen.gif Interface to Electromechanical Relay

square02_darkbluegreen.gif Automatic Test Equipment

square02_darkbluegreen.gif ON/OFF Monitoring of Motors, Lights ...

square02_darkbluegreen.gif Machine Interfacing, ...


모 델 번 호

비       고


16 Digital I/O Board, 24V, Isolated



Screw Terminals Board, LED Status Display, DIN-rail


Standard Shielded, Twisted pairs Round 케이블, 2m/5m


Same as ST010, for High Currents


PA1508 하드웨어 사양



Digital Input

Number of Channels

8(Seperate Grounds)

Optical Isolation



Through Optical Couplers, 1000V

from the PC to the peripheral

Each Channel is seperated from the others

Normal Voltage


Input Current at 24V

6mA typ.

Logic Input Level





U nominal : 24V

UH Max. : 30V

UH Min. : 19V

UL Max. : 17V

UL Min. : 0V

Signal Delay

70 ( at 24V )

Maximum Input Frequency

5 kHz ( at 24V )

Digital Output

Number of Channels



Through Optical Couplers, 1000V

Output Type

High-Side(load at ground) according IEC 1131-2

Nominal Voltage


Supply Volatge

10 to 36V, min. 5V(Shut-Down) through front connector

Max. Current for 8 Outputs

3A typ.

Output Current/Output

500mA typ./channel

Output Current for 8 Cjannels

350mA typ./channel

Short-Circuit Current/Output

Shut-Down at 24V, RLoad<0.1



RDS ON Resistance

0.4 Max.

Switch-On Time

I out = 0.5A, Load = Resistor : 120

Switch-Off Time

I out = 0.5A, Load = Resistor: 40



Temperature Hysteresis



Shut-Down Logic



When 24V ext. supply volatge drops below 5V:

the outputs are switched off.

Diagnostic: Status bit or Interrupt to the PC

Diagnostic Outputs

1 for each group of 4 channels



Noise Immunity

Test Level




- ESD: 4kV

- Field: 10V/m

- Burst: 4kV

- Conducted radio interferences: 10V

Physical & Environmental Conditions

Dimensions approx.

125 x 91 mm

System Bus


Space Required

Short board, 1 AT or XT slot

Operating Voltage

+5V, ±5% from the PC

Current Consumption


Front Connector

37-pin SUB-D male connector

Temperature Range

0 to 60 (with forced cooling)


PA1508 Block Diagram


PA1508 Protection Circuit


PA1508 Connector


PA1508 터미널 보드 연결도


한국인텔리젼트시스템(Korea Intelligent System)  전화 : 02-3272-9301   Email :