Home Beckhoff EK EtherCAT Couplers EK1101

EK1101

Name: EK1101
Brand: Beckhoff
Price: 462 USD
Availability: InStock
Rating: 4.8 (18 reviews)

Rated 4.8 (18 total ratings)

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The EK1101 is an Ether CAT coupler featuring automatic addressing via the Ether CAT protocol, a power supply of 24 V DC (-15%/+20%), a data transfer rate of 100 Mbaud full duplex, and dimensions of 44 mm x 100 mm x 68 mm. Part of the EK EtherCAT Couplers series by Beckhoff, it supports up to 65,535 bus terminals.

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Product Description:

The EK1101 is a coupler designed by Beckhoff Automation to provide a link between the widely used Ether CAT communication protocol and Ether CAT terminal units. This device is built to meet international standards; it receives telegram signals through the 100BASE-TX operating at a transmission rate of 100 megabits per second. These signals are converted to the corresponding E-bus signal representation, which is sent to the connected Ether CAT terminal. The unit can be used with up to 65,534 Ether Cat terminals during its operation. The connection cable to be used for the data transmission with this unit should belong to at least category five classification and should be well shielded to reduce interference. There is a total of three hexadecimal ID switches for this product; these IDs provide the option to switch between various topologies. The coupler can also be used with up to 4096 configurable ID.

The EK1101 bus coupler is provided with a supply voltage of about 24 volts; the output of this voltage provides the connected Ether CAT terminals with the current they require for efficient communication. The current provided by the coupler is as high as 2 amperes; this supplied value can be increased through the integration of additional field terminals. During transmission, the maximum amount of delay that can occur is approximately 1 microsecond.

The EK1101 is provided with housing designed to prevent foreign interference according to the IP20 protection category; this housing is made from polycarbonate material, it has a high electrical and thermal resistance and an external dimension of 44 by 100 by 68 millimeters. Installation should be done indoors in a vertical position and on the 35 millimeters DIN rail, which is built according to EN 60715. Side-by-side mounting is also permitted by means of a double slot and key connection.

Specs
Common Troubleshooting Steps
Similar Ordering Codes
Common Error Codes
Product Comparison

Addressing
Automatic via Ether CAT protocol

Bus Coupler Type
EK1101 (Standard for Ether CAT Terminals)

Bus Interface
Ether CAT

Connection
2 x RJ45 (Ether CAT In, Ether CAT Out)

Current Consumption
Approx. 100 mA (from E-bus)

Dimensions (w X H X D)
44 mm x 100 mm x 68 mm

Fieldbus Data Transfer Rate
100 Mbaud, full duplex

Manufacturer
Beckhoff

Mounting
DIN rail

Number Of Bus Terminals
Up to 65,535

Permissible Ambient Temperature
0°C to +55°C (operation)

Power Supply
24 V DC (-15%/+20%)

Protection Class
IP20

Type
Ether CAT Coupler

Weight
Approx. 180 g

LED / symptom you see	What it’s telling you	First things to try
DC LED off – no LEDs lit	24 V supply is missing or < 22 V	Measure at the supply terminal; replace blown fuse and retighten the spring clamp; be sure PE ground is present
RUN LED off, ERR LED red right after power-up	Coupler is stuck in INIT state (HW fault during self-test)	Power-cycle > 10 s; if the fault returns the coupler has to be replaced
RUN LED flashes 2 Hz (green) forever	Device stays in PRE-OP because the PLC didn’t send configuration	Check that the master downloaded the correct EL-terminal map; re-scan and activate configuration in TwinCAT/TIA
RUN LED flashes 1 Hz (green)	Device is in SAFE-OP (process-data mismatch)	Compare PDO assignments to the real terminal order, correct and restart EtherCAT
ERR LED single-flash (red)	Invalid EEPROM / wrong firmware	Reflash the latest firmware with Beckhoff Firmware Update Tool
LINK/ACT LEDs dark, master shows “lost slave”	Broken Cat-5 cable or bad RJ-45	Swap patch lead, clean the bushings, verify switch port – link should be 100 Base-TX
CF LED red during start-up	Compact-Flash card missing or has CRC errors	Reseat the card; if the LED stays red clone and replace the CF card
ERR LED triple-flash (red)	HotConnect address conflict	Make sure only one EK1101 in the network has the “ID-switch” set to the selected node number
Cyclic resets when cabinet warms up	Over-temperature (> 70 °C at heatsink)	Keep ambient ≤ 55 °C; clear airflow, leave ≥ 30 mm above the coupler for convection
RUN LED green, but process data not changing	Hot-plugged EL-terminal not recognised	Do an EtherCAT scan for changes or reboot the station so the new terminal is registered by the master

Ordering code

LED pattern or code	Meaning
DC OFF (all LEDs dark)	No 24 V or < 22 V at Us
RUN OFF + ERR RED after power-up	HW self-test failed – coupler defective
RUN 2 Hz GREEN (stays PRE-OP)	Master never sent config
RUN 1 Hz GREEN (SAFE-OP)	PDO size or order mismatch
ERR 1-flash RED	EEPROM / firmware CRC error
ERR 3-flash RED	HotConnect ID conflict
CF LED RED	CompactFlash missing or write error
LINK/ACT dark – master “lost slave”	Broken RJ-45 or switch port down
RUN green – no process data	New EL-terminal hot-plugged, not scanned
Repeated resets when cabinet warms	Heatsink > 70 °C

Beckhoff model	Network ports / interface	Medium & max segment length	System supply (V DC)	E-bus or module current capability
EK1101	2 × RJ45	100BASE-TX, 100 m	24 V (-15 % / +20 %)	2 A available for downstream terminals
EK1100	2 × RJ45	100BASE-TX, 100 m	24 V (-15 % / +20 %)	2 A to terminals
EK1110	1 × RJ45	100BASE-TX, 100 m	Powered from E-bus	Draws ≈ 130 mA (no power feed-through)
EK1122	2 × RJ45	100BASE-TX, 100 m	From E-bus	Draws ≈ 220 mA
CU1124 (4-port junction)	4 × RJ45	100BASE-TX, 100 m	24 V (-15 % / +20 %)	N/A (hub only)
EK1501	2 × SC-duplex fibre	100BASE-FX, 2 km	24 V (-15 % / +20 %)	2 A to terminals

Frequently Asked Questions about EK1101:

Q: What does the EK1101 do?

A: The EK1101 serves as a link between Ether CAT protocol at fieldbus Level and the Ether CAT terminals.

Q: How long is the connection length for the EK1101?

A: The maximum connection length supported by the EK1101 is about 100 meters.

Q: What are the ID switches for the EK1101 designed for?

A: The integrated ID switches are used for implementing variable topologies.

Q: Can the EK1101 be used in cold areas?

A: Yes. The minimum ambient temperature for the operation of the EK1101 is about -25 degrees Celsius.

Q: What is the protection classification of the EK1101?

A: The EK1101 is classified as a IP20 product.

Internal Product Review

‘‘The EK1101 is an Ether CAT coupler designed according to international standards. It is CE certified and classified as a IP20 device. The permissible relative humidity for this product is about 95%. The electrical isolation of this product is also about 500 volts. ’’