Category: Beckhoff

The EL1258 digital input terminal acquires the fast binary 24 V control

signals from the process level and transmits them, in an electrically

isolated form, to the controller. Each EtherCAT Terminal has eight channels

that indicate their signal state via light emitting diodes. In comparison

with the EL1252. the EL1258 offers not only a higher channel density,

but also a higher performance thanks to the XFC multi-timestamp function.

Whereas the EL1252 can accept one edge change with time stamp per bus

cycle, the EL1258 offers the possibility to register up to 32 events with time

stamps. The EL1258 is synchronized with other EtherCAT devices through

the distributed clocks system, so that events in the whole system can be

measured with a uniform timebase.

Special features:

• suitable for particularly fast signals due to very low input delay

• synchronized operation through distributed clocks XFC technology

possible

• high performance thanks to XFC multi-timestamp feature

The EL1252-0050 digital input terminal acquires the fast binary 5 V control

signals from the process level and transmits them, in an electrically isolated

form, to the controller. The EtherCAT Terminal has two channels that indicate

their signal state via light emitting diodes. The signals are furnished with a

time stamp that identifies the time of the last edge change with a resolution

of 1 ns. With this XFC technology, signal characteristics can be traced exactly

in time and correlated with the distributed clocks system-wide. With this

technology, machine-wide parallel hardware wiring of digital inputs or encoder

signals for synchronization purposes is often no longer required.

The switching thresholds of the input circuit are based on the CMOS level:

Signal voltage “0” < 0.8 V, signal voltage “1” > 2.4 V. The 5 V supply voltage

can be generated by the EL9505 power supply terminal and fed into the power

contacts.

Special features:

• 5 V inputs

• suitable for particularly fast signals due to very low input delay

• synchronized operation through distributed clocks XFC technology possible

• support of XFC technology timestamp

The EL1252-0010 digital input terminal acquires the fast binary 24 V control

signals from the process level and transmits them, in an electrically isolated

form, to the controller. The EtherCAT Terminal contains two channels whose

signal state is indicated by LEDs.

The signals are furnished with a time stamp that identifies the time of the

last edge change with a resolution of 1 ns. With this XFC technology, signal

characteristics can be traced exactly in time and correlated with the distributed

clocks system-wide. With this technology, machine-wide parallel hardware

wiring of digital inputs or encoder signals for synchronization purposes is often

no longer required. In conjunction with the EL2252 EtherCAT Terminal

(digital output terminal with time stamp), the EL1252-0010 enables responses

with equidistant time intervals, largely independent of the bus cycle time.

Special features:

• suitable for particularly fast signals due to very low input delay

• synchronized operation through distributed clocks XFC technology possible

• support of XFC technology timestamp

• detection of fast edges with simultaneous filtering out of short interferences by

10 µs input filter (cf. EL1252: 1 µs)

The ELX1058 digital input terminal allows intrinsically safe NAMUR field

devices installed in hazardous zone 0/20 and 1/21 areas to be connected

directly and acquires their signals in accordance with IEC 60947-5-6.

The sensors are supplied with a voltage of 8.2 V and return a diagnosable

current signal. A wire break or short circuit can thus be detected in addition

to the switching state. The LEDs display the signal states and any error states.

In addition to switches, incremental encoders with a NAMUR interface can

also be connected. The configuration of the signal inputs for this can be set

via software. 8 digital inputs are pre-set as standard. By choosing the appropriate

configuration, up to 2 incremental encoders can be operated simultaneously

with 2 digital input channels. You can select whether a positive or negative

switching sensor is connected for each channel for the digital inputs. 

This allows NAMUR NCs and NOs to be integrated into the control system.

Potential-free contacts can also be connected.

EtherCAT Terminals from the ELX series must always be operated in conjunction

with the ELX9560 power supply terminal, which generates an electrically isolated

output voltage (24 V EX) from the input voltage (24 V DC) to supply the downstream

ELX terminals. If a repeat supply is required, an ELX9410 and an ELX9560 can

be combined so that further ELX terminals can be connected in series.

The ELX terminal segment must be terminated with one ELX9012. two ELX9410

or one EK1110. The use of two ELX9410 allows the use of EL terminals behind

ELX terminals. With the EK1110. the terminal segment can be continued via an

EtherCAT cable, for example to implement cable redundancy.

The ELX1054 digital input terminal acquires signals from NAMUR field

devices according to EN 60947-5-6. The sensors are supplied with a

voltage of 8.2 V and return a diagnosable current signal. In this way,

a wire breakage or short-circuit can be detected in addition to the

switching state. The LEDs indicate signal or any error states, channel

by channel.

Using a DIP switch on the side, it is possible to select channel by channel

whether a positive switching or negative switching sensor is to be 

connected. Thus, no changes to the PLC are required for the connection

of both NAMUR break contacts or make contacts.

EtherCAT terminals of the ELX series must always be operated in

conjunction with the ELX9560 power supply terminal. This terminal

generates an electrically isolated output voltage (24 V EX) from the input

voltage (24 V DC) for supplying the subsequent ELX terminals.

If a new power supply is required, the combination of an ELX9410 and

an ELX9560 can be used so that further ELX terminals can be added.

The ELX terminal segment must be terminated with one ELX9012. two

ELX9410 or one EK1110. The use of two ELX9410 allows the use of EL

terminals behind ELX terminals. With the EK1110. the terminal segment

can be continued via an EtherCAT cable, for example to implement

cable redundancy.

The products are available in different versions, depending on the required physical

layer and additional functions.

Physical layer:

• copper-based RJ45 connection

• copper-based M8 connection

• optical fiber connection for single- or multi-mode

POF (polymer optical fiber) connection

Additional functions:

• ID switches for variable topologies

• Hot Connect and Fast Hot Connect technology for changing topologies

• integrated digital and safe I/Os for compact and space-saving solutions

• Extended Distance connection for distances up to 300 m

• metal housing and additional diagnostics for high-precision analog measurement technology

The EtherCAT Couplers are the link between the EtherCAT protocol at fieldbus

level and the EtherCAT Terminals. Since communication in the EtherCAT system

is continuous through to the last terminal, the coupler only converts the physical

layer without changing the process data stream.

There is a selection of three different technologies:

• EtherCAT: ultra-fast communication standard

• EtherCAT P: combines communication and power in one cable

• EtherCAT G: speeds up to 10 Gbit/s

A distinction is made between a coupler, a junction and an extension.

The EtherCAT Coupler is the head station with which the terminal segment starts.

The junction can be placed anywhere in the EtherCAT segment and thus allows

the setup of a star topology. The extension is plugged into the end of the EtherCAT

terminal block and allows a setup with a line topology.

The BK1150 EtherCAT Coupler is the link between the EtherCAT protocol at fieldbus level and the Bus Terminals. The coupler

converts the passing telegrams from Ethernet 100BASE-TX to the internal, fieldbus-independent terminal bus. A station consists of

a coupler and up to 64 Bus Terminals plus a bus end terminal. The process image of the EtherCAT system is assigned automatically.

Up to 255 Bus Terminals can be connected via the K-Bus extension.

Special features:

• Compact design

• Connection technology: 2 x RJ45 socket

• Connection lengths: up to 100 m

• connects the EtherCAT protocol with the Bus Terminals

The BK1150 works in the same way as the BK1120 and complements this series with its compact design. The coupler has two RJ45

sockets. The upper Ethernet interface is used to connect the coupler to the network; the lower socket serves for the optional

connection of further EtherCAT devices in the same segment. The system and field supply, each 24 V DC, is provided directly at the

coupler. The attached Bus Terminals are supplied with the current required for communication from the supplied system voltage.

The field supply is forwarded to the individual I/O components via the power contacts with up to 10 A. The Bus Terminals are

parameterized via ADS through the KS2000 software; a KS2000 connector is not required. Alternatively, the controller (PLC, IPC) can

configure the Bus Terminals via PLC function blocks.

In the EtherCAT network, the BK1150 coupler can be installed anywhere in the Ethernet signal transfer section (100BASE-TX)

except directly at the switch. The EK9000 and EK1000 couplers are suitable for use at the switch.

The BK1120 has two RJ45 sockets. The upper Ethernet interface is used to connect the coupler to the network; the lower socket

serves for the optional connection of further EtherCAT devices in the same segment.

The system and field supply, each 24 V DC, is provided directly at the coupler. The attached Bus Terminals are supplied with the

current required for communication from the supplied system voltage. The field supply is forwarded to the individual I/O

components via the power contacts with up to 10 A. In the EtherCAT network, the BK1120 coupler can be installed anywhere in the

Ethernet signal transfer section (100BASE-TX) – except directly at the switch. The EK9000 and EK1000 couplers are suitable for use

at the switch.