BECKHOFF EP9214-0023 - Manual (Page 10)

Product overview
2.3 EP9224 - Introduction
Fig. 5: EP9224
Power distribution for EtherCAT Box (24 V
DC
) with data logging
The EP9224-0023 enables connection of four power supply branches. In each branch the current
consumption for the control voltage U
S
and the peripheral voltage U
P
is monitored, limited, and, if necessary,
switched off.
The power distribution is supplied via a 7/8" connector with up to 16 A (per voltage supply US/UP). Several
modules can be configured in a cascade arrangement. In the event of a short-circuit in one of the four
outputs, the affected output is switched off. The supply for the other branches remains active. The switch-off
and control is done in such a way that the input voltage does not fall below 21 V or other modules are going
down, caused by undervoltage.
During startup consumers with large capacities can be added without problem.
The master can read diagnostic messages from the individual channels via the EtherCAT interface.
Independent switching of individual consumer branches is also possible via the EtherCAT master.
In delivery state the eight outputs of the box (4 times Us, 4 times Up) are activated to enable operation
without EtherCAT.
After an error caused the switch off of a channel, this channel remains switched of when you try to switch it
on again and has to be set back actively by the EtherCAT master or a hardware reset at the box (lower M8
socket).
Additional to this basic functionality that is also provided by EP9214, the EP9224 displays the voltage values
of PowerIn supply and all current values of inputs and outputs within the process data.
The box has got an internal log file, that is writing the system values continuously into a ring buffer. This data
logging has to be activated at the startup.
In error case it is stopped, so a history of the system parameters from before the error case can be read out.
This enables a much quicker error localization.
EP9214-0023 and EP9224-0023 10 Version 2.0.0