Electrical Installation; Connections Within A Bus Terminal Block - Beckhoff EK1914 Operating Manual

7.4

Electrical installation

7.4.1

Connections within a Bus Terminal block

The electric connections between the Bus Coupler and the Bus Terminals are automatically realized by
joining the components:
Spring contacts (E-bus)
The 6 spring contacts of the E-bus take over the transmission of the data and the supply of the bus terminal
electronics.
Observe E-bus current
Observe the maximum current that your EtherCAT coupler can supply for E-bus supply! Use the EL9410
power supply terminal if the current consumption of your TwinSAFE terminals exceeds the maximum
current that your EtherCAT coupler can supply for E-bus supply.
Power contacts
The power contacts transmit the supply for the field electronics and thus represent a supply rail within the
Bus Terminal block. The power contacts are supplied via terminals on the EtherCAT coupler.
Observe contact assignments of the power contacts
When configuring a Bus Terminal block, note the contact assignments of the individual TwinSAFE
terminals, since some types do not loop through the power contacts, or not completely. This may be
the case, for example, with analog Bus Terminals or digital 4-channel Bus Terminals.
Power feed terminals interrupt the power contacts and thus represent the start of a new supply rail.
Possible power supply terminals are the EL91xx and the EL92xx.
EK1914
NOTE
Version: 2.0.0
Installation
29