Chapter 4 Digital Modules
4.2 SM-DOUT1
4.2.1 Introduction
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.
4.2.2 Specifications
Isolation
Output
Front Panel
Power Consumption
Temperature Range
Module Weight
ID Byte
March 12, 1996
2.5 kV optoisolated from the system
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)
Max. Frequency
Output ON
Output OFF
Outputs after Reset
Yellow LEDs ON when the output is ON
5mW (min.), 270mW (max.)
Standard (0 C to +70 C), Extended (-40 C to +85 C)
70g
$10, read by the SPI Interface
©1996 PEP Modular Computers GmbH
SMART I/O User's Manual
: 90V/10 s (35V)
: 24V DC
: 3 s (at 24V)
: 130 s (at 24V)
: 1 kHz square
wave
: Intern. Logical '0'
: Intern. Logical '1'
: OFF
4
4
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