Skip to content
Call:1-888-551-3082 International: 1-919-443-0207 sales@servosupplier.com
Call:1-888-551-3082 International: 1-919-443-0207 sales@servosupplier.com

BK4020

Original price $625.10 - Original price $1,619.42
Original price
$1,619.42
$625.10 - $1,619.42
Current price $1,619.42

In Stock, Ships 1 - 3 Days

The Beckhoff BK4020 from the BK EtherCAT Bus Couplers series is a high-performance industrial automation interface that supports up to 64 bus terminals (extendable to 255 with K-bus extension) and handles 512 digital I/O channels alongside 32 analog I/O channels. It delivers a 500 kbaud data rate over LiYCY 3×2×0.22 mm² cable and features dual screened, vibration-locked 9-pin D-sub bus interfaces. Powered by 24 V DC (–15 %/+20 %) with a module input current of 70 mA plus K-bus share (max 500 mA), it offers power contact ratings of max 10 A at 24 V DC and recommended fuse ≤10 A. Engineered to EN 61000-6-2 immunity and EN 61000-6-4 emission standards, with operating temperatures from 0 °C to +55 °C and storage from –25 °C to +85 °C, the BK4020 ensures reliable, real-time data exchange in rigorous industrial environments.

Contact Us

Servo Supplier is not an authorized distributor. We sell new surplus and refurbished products. All warranties are with Servo Supplier and not the manufacturer.

2 - 4 Days
Handling Time

30 Day Warranty

Shipping Options

Payment Options

Technical Specifications

Analog I/O channels


32

Bus Interface


2x 9‑pin D‑sub, screened & vibration locked

Bus terminals


64 (up to 255 with K‑bus extension)

Data cable


LiYCY 3×2×0.22 mm²

Data rate


500 kbaud

Digital I/O channels


512

EMC emission


EN 61000‑6‑4

EMC immunity


EN 61000‑6‑2

K‑bus supply current


1750 mA

Module input current


70 mA + (K‑bus current)/4; max 500 mA

Operating temperature


0 to +55°C

Power contact current


max 10 A

Power contact voltage


max 24 V DC

Recommended fuse


≤ 10 A

Shock resistance


EN 60068‑2‑27

Storage temperature


-25 to +85°C

Supply voltage


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

Vibration resistance


EN 60068‑2‑6

Testimonials

We used Servo Supplier to refurbish old drives and buy reconditioned parts. We received great and timely service at a fair price. I recommend them to anyone who has aging equipment and can't find support from their OEMs. Highly recommend.

Bostik Inc.

WE absolutely LOVE Servo Supplier. They are quick, efficient and friendly. Honest too, which is huge in our industry. We deal with many different companies, and these guys are tops in our humble opinion. There has never been an issue with delivery, no warranties, no hidden fees, no surprises. Just what you want in the manufacturing business. Smooth, and we love smooth.

Technomech Inc

First-time customer. The ordering process was completely seamless. The part that we ordered was at our business within 2 days. Which was excellent! We had a piece of equipment down for a little more than 48 hours. Could have been a lot longer had we purchased from one of our normal suppliers.

Steve T. from NF&M International

I found these guys online and needed a somewhat obscure part quickly, and they delivered! Very quick process from the time I requested a quote to the shipping of my items. Great work Servo Supplier team!

FlexPac

Servo Supplier is my go to place for obsolete parts. They always seem to find them and the price is usually good. Any time I have questions they respond very quickly and professionally. I highly recommend them!

Middlesex General Industries

They were very quick to get the drive we needed shipped out to us. They were also very quick to respond and help with some pictures of information on the unit we ordered to ensure we received the right part.

Justin Ball from Miba

Understood our situation, and worked to help us get it solved. Very responsive, and stepped out to keep me informed until the product arrived. Exactly as described, and promised.

Brian Tomlin

This company was fantastic to work with! Very patient with us to make sure we were getting what we needed and extremely quick shipping. Would definitely purchase from them again and again!

Carla Morgan

We asked for a fast turn around and Wake was up to the task!

Darrell Chapman