Beckhoff Parts NZ | EL EtherCAT Terminals KL Bus Terminals CX

Beckhoff Parts, New Zealand

RFQ / Beckhoff

The first digit after the prefix tells you what a terminal does and the last digit tells you how many channels. EL1008 is an 8-channel digital input. Beckhoff numbering is the most systematic of any brand we carry.

Beckhoff is the EtherCAT and PC-based control brand, common on New Zealand machine building, packaging and specialist plant. EtherCAT Terminals, Bus Terminals, embedded PCs and servo drives.

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Reference pages

Page	Covers
EtherCAT Terminals	The EL range by function, couplers, the E-bus current budget and end terminals
KL Bus Terminals	K-bus versus E-bus, BK couplers and the BK1120 EtherCAT bridge
CX Embedded PCs	Dash suffix decode, the factory-fitted optional interface, and the CFast card
AX servo drives and AM motors	Order code decode, One Cable Technology, motor variants, DC link discharge

The numbering system

Take EL3054.

Part	Meaning
EL	EtherCAT Terminal, E-bus
3	Analogue input
05	Signal type and variant
4	4 channels

The function digit, on both EL and KL

Digit	Function
1	Digital input
2	Digital output
3	Analogue input
4	Analogue output
5	Position measurement and encoders
6	Communication and interface
7	Motor and drive terminals
9	System terminals

The scheme is shared between the EL and KL ranges, so a KL3054 and an EL3054 are the same function on different buses.

Convenient for identifying what a terminal does, and exactly why the two ranges get confused.

Check the coupler before ordering terminals

The single most common Beckhoff ordering error.

Coupler at the head of the rail	Bus	Takes
EK	E-bus	EL, ES, EM
BK	K-bus	KL, KM, KS

The terminals look almost identical and will not work in each other's stations. One look at the leftmost device settles it.

Send a photo of the rail including the coupler and we will confirm.

The prefixes

Prefix	Product
EL	EtherCAT Terminal
ES	EtherCAT Terminal, pluggable wiring
EM	EtherCAT module
EK	EtherCAT Coupler and extension
EP, EQ, ER	EtherCAT Box, IP67
KL	Bus Terminal, K-bus
KS	Bus Terminal, pluggable wiring
KM	Bus Terminal module
BK	Bus Coupler
BC, BX	Bus Controller, with local logic
CX	Embedded PC
C6, C7	Industrial and cabinet PCs
CP	Control panels and panel PCs
AX	Servo drives
AM	Servo motors
AMP	Motor with integrated drive
AS	Stepper motors
FC	Fieldbus cards
ZK, ZS, ZB	Cables and accessories
TS, TF, TC	TwinCAT software

Pluggable wiring, and when it is worth it

ES and KS terminals are the EL and KL equivalents with a pluggable wiring level, so field wiring stays in the connector when the terminal comes out.

Worth it	Not worth it
Machines stripped regularly	Fixed panel installations
Terminals swapped for fault finding

They are not interchangeable as parts. An EL cannot take an ES connector.

Beckhoff spares are unusually easy

Worth stating because it is not true of most platforms.

EL and KL terminals carry no user configuration. The station is described in the TwinCAT project and terminals are addressed by their position on the rail.

Consequence
A shelf terminal is a working terminal. No programming, no settings, no matched pairs
Terminal order on the rail matters. A rebuild goes back in sequence
Adding a terminal means updating the TwinCAT project, not just fitting hardware

So a sensible spares holding is one of each terminal type you run, plus an end terminal and a coupler. On a site with several stations that covers all of them.

Except where the configuration does live somewhere

Product	On a replacement
EL and KL terminals	Nothing to transfer. Goes straight in
CX embedded PC	The CFast card holds the OS, TwinCAT and the project. Move it
AX8000 with TwinSAFE	Safety project must be reloaded into the axis module
AM8000 motor	Carries its own tuning data on a digital identification plate

What every station needs

Beckhoff defines a station as a coupler, any number of terminals, and a bus end terminal.

Bus	End terminal
E-bus	EL9011
K-bus	KL9010

The end terminal is the part people forget. It costs very little and is not optional. When extending a station it comes off, the new terminals go on, and it goes back on the end.

The bus current budget

The design constraint that catches people extending a working station.

The coupler supplies the terminals with bus current. An EK1100 provides a maximum of 5 V at 2 A. Beyond that, a power feed terminal such as the EL9410 must be integrated.

Terminal type	Relative draw
Simple digital	Low
Analogue	Higher
Communication and interface	Highest

The symptom is misleading

Exceeding the budget produces no clear error. Terminals toward the far end behave erratically, drop off the bus, or fail to be recognised.

That looks exactly like a faulty terminal, and replacing it changes nothing.

So if a station has recently been extended and the last few terminals are misbehaving, check the current budget first. The fix is an EL9410.

Tell us what you are adding and to what, and we will flag it.

Two things that are factory-fitted only

Product	Cannot be added later
CX embedded PC	The optional interface, fitted ex factory with a fieldbus in master or slave execution
AX5000 servo drive	The option card for EnDat 2.2 and BiSS-C feedback

On both, an otherwise identical unit will not do the job. Check the full part number of the existing device, and tell us what is fitted.

The BK1120, and why it matters on a migration

Worth knowing before quoting an I/O replacement.

A BK1120 connects K-bus terminals to an EtherCAT network. An existing rail of KL terminals can be brought onto EtherCAT without replacing the I/O.

Option	What it involves
Like-for-like KL terminal	Goes straight in
BK1120 coupler swap	Keeps the terminals and the field wiring. Station appears on EtherCAT
Full migration to EL	New coupler, terminals, rewiring and configuration

If a plant is moving to EtherCAT with racks of KL terminals, ask about the middle option first.

Ten year availability

Beckhoff states its choice of embedded CPUs and component stocking are aimed at ensuring availability of Embedded PCs for more than ten years, so machine builders can produce standard machines over a long period without software changes.

That is a real advantage on a machine build. It also means a genuinely obsolete Beckhoff unit has been out of production a long while, and the secondary market is where it lives.

We hold and source those.

Safety note on servo drives

An AX5000 DC link holds up to 875 V DC after power failure. Beckhoff specifies a five minute discharge on the smaller frames and requires the DC+ to DC- voltage measured below 50 V before touching.

Isolating the supply does not make the drive safe. Wait, then measure. Discharge times are longer on larger drives.

What we can supply

Current production. The EL, ES, EK and EP ranges, CX embedded PCs, AX5000 and AX8000 servo drives, AM8000 motors, plus cables, end terminals, power feed terminals, CFast cards and AX-Bridge components. Quoted with a delivered lead time.

Discontinued. KL Bus Terminals, BK and BC couplers, earlier CX and BX controllers, earlier AX and AM variants. Surplus and tested used.

Whole stations. Send the I/O count and we will quote the coupler, terminals, power feed and end terminal as a set.

We buy Beckhoff

EtherCAT Terminals resell readily because they are self-identifying and carry no configuration. KL terminals are worth real money to plants still running K-bus. Embedded PCs and servo drives hold value, particularly older units that are the only way to keep a machine on its original TwinCAT version.

Keep couplers with their terminals, CFast cards with their CX, and drives with their motors. Matched sets are worth more. See Sell To Us.

How to give us what we need

The full part number, including any dash suffix.

The coupler at the head of the rail, if you are unsure whether terminals are EL or KL.

What you are adding and to what, for the bus current budget.

A photo of the rail. Beckhoff labels the front clearly and one photo usually identifies a whole station.

Common questions

Can you get a part that is not listed on your site?
Usually. The site shows what we hold, not what we can source.

Will an EL terminal work in my existing station?
Only if the coupler is an EtherCAT one. Check whether the head of the rail is an EK or a BK.

Do I need anything besides the terminal?
Check the bus current budget if you are adding, and make sure the station has an end terminal.

Can I upgrade a CX to add a fieldbus interface?
No. The optional interface is fitted ex factory.

Do you supply used equipment?
Yes, where new is not available, tested and clearly described.

What is the lead time?
Ex stock items ship the next working day within New Zealand. We give you a firm lead time with the quote.

Do you quote in NZD?
Yes, in NZD including GST for New Zealand customers.

Send us your part numbers

One terminal or a full station. A photo of the rail is usually enough to identify the lot. Quotes in NZD including GST.

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Industech is an independent supplier of new, surplus and used industrial automation equipment. We are not an authorised distributor of, approved by, sanctioned by, or affiliated with Beckhoff Automation. Beckhoff, TwinCAT, TwinSAFE, EtherCAT and One Cable Technology are trademarks of Beckhoff Automation. All trademarks, brand names and part numbers are the property of their respective owners and are used here for identification purposes only.