MICRO-EPSILON surfaceCONTROL 3D 35 Series Assembly Instructions Manual page 8

Electrical Parameters of Digital Inputs, Multi-Function Connection
U
U
IN, high
start active
trigger
11 V
0 V
t
delay trigger
Customer Device
DRV
GND GPIO
Electrical Parameters of Digital Outputs, Multi-Function Connection
The digital outputs require an external auxiliary voltage between 5 V and 30 V as well as
a load resistance. They can be operated at a load current of at most 100 mA. This may
occur, for example, by using an NPN-switching input module of a control.
The outputs are switched using a SolidState relay and are low active.
Sensor
Fig. 7 Example for the timing behavior of an
output at VCC GPIO = 24 V, I
R = 2.4 kW
L
surfaceCONTROL 3D 35xx
t
Sensor
Customer Device
VCC GPIO
R
L
I
Out
GND GPIO
= 10 mA,
Out
The switching levels of the digital inputs are
defined based on HTL logic: Low 0 ... 3 V,
High 11 ... 24 V (up to 30 V permitted).
Maximum input current is internally limited
to 5 mA. The GPIO_1 input can also be
used as a trigger signal. The minimum pulse
duration when used as a trigger signal is
50 µs. Switching delay until a measurement
is triggered is at most 10 µs.
All inputs can be used as logical inputs, but
not for time-critical tasks.
U
24 V
0 V
t < 0.1 ms
on
Fig. 8 Switching times of digital output
t
duration
t t
on
t < 1.0 ms
off
t
off
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