Pepper Computer Modular Computers RS232 User Manual

SMART I/O User’s Manual

©1996 PEP Modular Computers GmbH

March 12, 1996

Page 4 - 19

Chapter 4  Digital Modules

The SM-DOUT1 provides eight optoisolated 24V DC (typ.) digital outputs

arranged in 2 independent groups. The maximum output switching fre-

quency is limited to 1 kHz (square wave) with the output in the ON state

when the system issues a logical ‘0’. The maximum continuous output

supply current is limited to 500mA (resistive loads) and provision has been

made to cater for inductive loads. The user interface is realized by 8 yellow

LEDs (1 per output channel) which illuminate when the output is ON.

Isolation

2.5 kV optoisolated from the system

Output

8 Digital Channels
2 Independent Groups
High-Side Switch (Common Vcc)
500mA Continuous Current (per 
channel)
Inductive Load Protection (clamp 
diode)
Power ON/OFF Protection
Overvoltage Protection
Output Voltage
Switch ON Delay (resistive)
Switch OFF Delay (resistive)

: 90V/10

µ

s (35V)

: 24V DC
: 3

µ

s (at 24V)

: 130

µ

s (at 24V)

Max. Frequency

Output ON
Output OFF
Outputs after Reset

: 1 kHz square 
   wave
: Intern. Logical '0'
: Intern. Logical '1'
: OFF

Front Panel

Yellow LEDs ON when the output is ON

Power Consumption

5mW (min.), 270mW (max.)

Temperature Range

Standard (0

°

C to +70

°

C), Extended (-40

°

C to +85

°

C)

Module Weight

70g

ID Byte

$10, read by the SPI Interface