Microscan MS-4X Manual de usuario Pagina 265

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Electrical Specifications
MS-880 Industrial Long Range Scanner User’s Manual A-9
Appendices
Optoisolator Outputs
Optoisolator circuits can transfer pulses between the scanner and peripherals with no
direct connection with the scanner’s internal circuitry. However, not every optoisolator
configuration provides complete isolation. The following diagrams show both fully
optoisolated and non-optoisolated circuits. They are only examples and do not repre-
sent all the possible wiring configurations.
Output Circuit Examples
Fully Optoisolated
This circuit is fully optoisolated and the
recommended configuration. It allows
the user to apply 1 to 28 VDC to the
circuit.
Caution: The maximum current that
can pass through the optoisolator is
100mA.
Not Optoisolated, Scanner Grounded
In this diagram, power is applied
externally, but the scanner’s power
ground is used to complete the circuit.
This setup involves some risk to the
optoisolator if excessive voltages are
applied.
Caution: The maximum current that
can pass through the optoisolator is
100mA.
Scanner
Output
Outputs (+)
Outputs (–)
I
Load
Generic Output Waveform Characteristics
I
load
=5mA I
load
=50mA I
load
=100mA
V
Out-On
0.7V 0.9V 1.0V
t
On-Typ
30µS 20µS 30µS
t
Off-Typ
1000µS 150µS 75µS
Isolated Scanner
Host
1to28V
Input
Scanner
Output
Power ground
Outputs (+)
Power (+)
Outputs (–)
Non-isolated Scanner
Host
1to28V
Input
Scanner
Output
Power ground
Power (+)
Outputs (–)
Outputs (+)
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