Page 8
surfaceCONTROL 3D 35xx
Electrical Parameters of Digital Inputs, Multi-Function Connection
0 V
11 V
U
IN, high
U
t
delay trigger
t
start active
trigger
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.
GND GPIO
DRV
Customer Device
Sensor
All inputs can be used as logical inputs, but
not for time-critical tasks.
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.
GND GPIO
VCC GPIO
Customer Device
Sensor
I
Out
R
L
0 V
24 V
U
t
on
t
off
t
duration
t
t
on
< 0.1 ms
t
off
< 1.0 ms
Fig. 7 Example for the timing behavior of an
output at VCC GPIO = 24 V, I
Out
= 10 mA,
R
L
= 2.4 k
W
Fig. 8 Switching times of digital output
