84
Connect Devices
WAGO-I/O-SYSTEM 750
750-666/000-003 4FDI/2FDO 24V/10A PROFIsafe V2 iPar
Manual
Version 1.2.0, valid from HW/SW Version 01/01
6.3.3.7
Switching Grounded Loads
Figure 40: Grounded load connection
When operating the PROFIsafe I/O module in the
Output Configuration
"H-
Side/L-Side 1" (see
Output Configuration
parameter) and loads are switched
that have a connection between digital power output O2A and the ground
connection (e.g., to improve EMC properties) and when the attached power
supply is connected between the common (ground) connection of the field supply
voltage and the ground connection, then this type of circuit leads to detection of a
short circuit and to the "Short circuit to GND" diagnostic message.
This occurs becuase the connection between output )2A and the ground
connection bridges digital power output O2A. As a remedy, the connection
between the ground connection and the common (ground) connection of the field
supply voltage must have a total resistance R
E
(see figure) of at least 70 kΩ.
You can accomplish this by placing an additional resistor between the common
(ground) connection of the field supply voltage and the ground connection.
