BECKHOFF EP9214-0023 - Manual (Page 39)

Comissioning and Configuration
Fig. 40: CoE object 0xF707:01 - Enable Control via Fieldbus
If the EP9214 is operated on an EtherCAT master, the basic setting or the bootup can be adapted.
This is done via the variable DPO Outputs Device -> Enable control via Fieldbus in the process data.
At the next power-on of the box the load circuits will then be switched on depending on the settings in the
CoE objects.
4.4 Switch of behavior
4.4.1 Switch-off characteristics
The EP9214 EtherCAT Box selectively protects all connected 24 V
DC
load circuits. This is done via various
electronic circuits, additionally protected by a 7 A micro-fuse.
Selective switch-off means that the load circuits are individually monitored and if a channel is exceeded, only
that channel is switched off.
This ensures the function of the remaining consumers connected to the higher-level power supply unit.
General functional principle
The EP9214 EtherCAT Box monitors the current for each of the 8 output channels. 4 x Us, 4 x Up. Switching
off takes place depending on the selected nominal current and release characteristic.
Superordinate to all is the hardware switch-off, which responds if
• 7 A is reached for 50 ms
• there is a short-circuit for 50 ms
• the capacitive load and thus the start-up current of the connected devices is too high
Due to the intelligent current limitation an output current exceeding 7 A is not possible under operating
conditions. The additionally installed 7 A micro fuse thus blows only if the upstream electronic switch-off is
already defective.
EP9214-0023 and EP9224-0023 39 Version 2.0.0