BECKHOFF EP2xxx - Manual (Page 88)

Mounting and cabling
With these modules intelligent power distribution concepts with up to 2 x 16 A and a maximum of 2.5 mm²
cable cross­section can be realized.
Fig. 82: EP92x4­0023, Connectors for Power In and Power Out
Electrical isolation
Digital modules
In the digital input/output modules, the grounds of the control voltage (GNDs) and the auxiliary voltage
(GNDp) are connected to each other!
Check this at the documentation of each used EtherCAT Box.
Analog modules
In the analog input/output modules the grounds of the control voltage (GNDs) and the auxiliary voltage
(GNDp) are separated from each other in order to ensure electrical isolation of the analog signals from the
control voltage.
EP2xxx 88 Version 2.1.0