6
Installation
and Operation
EDBC250SIO | 2.0
192
Switching of capacitive loads
Switching of capacitive loads must take account of the limits below described with reference to
the output current and the test pulse length.
Test pulses cyclically test the module's digital outputs. If a capacitive load is connected to the
digital power output, you may have to modify the test pulse duration. A test pulse length not
adapted to the load may cause the module to change to its safe state.
The outputs support loads connected to SOX+ and SOX- as well as to SOX+ and an external
GND potential. Different maximum capacitive loads apply to both configurations because they
are built around a different internal composition of the outputs. Every output supports a maxi-
mum capacitive load of 470 µF.
Output capacity of actuators with external GND reference or digital inputs to SOX+
Test pulse length
Output current 2 mA … 0.5 A
700 µs to 1500µs
470 nF
Output capacity of actuators with GND reference connected to SOX+ and SOX-
Test pulse length
Output current 2 mA
Output current 20 mA
700 µs
22 nF
300 nF
1000 µs
43 nF
470 nF
1500 µs
77 nF
470 nF