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Siemens 6SL3244-0BA20-1BA0 CU240S Control Unit front view
Siemens 6SL3244-0BA20-1BA0 CU240S terminals and interface view
Siemens 6SL3244-0BA20-1BA0 CU240S side view

Siemens 6SL3244-0BA20-1BA0 SINAMICS G120 CU240S Control Unit

Siemens / SINAMICS G120 / CU240S
Siemens 6SL3244-0BA20-1BA0 is a CU240S Control Unit for terminal-controlled SINAMICS G120 drive applications.
The standard CU240S combines USS communication over RS485 with nine digital inputs, three digital outputs, two analog inputs, two analog outputs, encoder feedback and PTC/KTY motor-temperature input. Match the installed Power Module, firmware, I/O assignment, encoder and parameter set before replacement.
Interface
RS485 / USS
Digital I/O
9 DI · 3 DO
Analog I/O
2 AI · 2 AO
Feedback
TTL / HTL
Order number
6SL3244-0BA20-1BA0
Control family
CU240S
Protection
IP20
24 V supply
20.4–28.8 V DC
One Year Warranty  —  Fast Delivery  —  Worldwide Shipping
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Product Specifications
Manufacturer Siemens AG
Item number 6SL3244-0BA20-1BA0
Country of Origin Germany
Lead Time 2-3 DAYS
After-Sales Support For after-sales support, please contact May.
HS Code / Commodity code Please confirm the destination before shipping.
FAQ

Quotes are valid for 30 days from the day the quote is received unless stated otherwise at the time of quotation.

Yes,we offer one year warranty for all new products.

Yes. We worked with FEDEX/DHL/TNT/UPS/ allowing us to provide swift global delivery of parts to any corner of the world.

Normally 3-5 working days,some remote areas 5-7 days more.

Product information
哦01
Control Unit Hardware Map

Published CU240S hardware, I/O and control profile.

Siemens 6SL3244-0BA20-1BA0 combines discrete and analog I/O, motor feedback, temperature monitoring and USS communication. The Control Unit and Power Module operate as one configured drive system.

Selection Record
Verify seven installed-system checkpoints.
Drive platform
SINAMICS G120
Control Unit
CU240S
Communication
USS on RS485
01
Exact label
6SL3244-0BA20-1BA0
RS485 connector
9-pin female Sub-D
Maximum baud rate
115200 bit/s
Digital inputs
9 programmable, isolated
02
Power Module
Record the complete PM order number
Digital outputs
3 programmable relay outputs
Analog inputs
2 programmable
Analog outputs
2 programmable
03
Firmware
Back up version and parameter set
Encoder interface
1 × TTL or HTL
Motor temperature
PTC / KTY84 interface
24 V supply
20.4–28.8 V DC, 0.5 A
04
I/O program
Document every terminal assignment
Memory interface
MMC slot
Commissioning port
STARTER or BOP option port
Dimensions
73 × 178 × 55 mm
05
USS network
Verify pins, address, baud and termination
Weight
0.52 kg
Degree of protection
IP20
24 V / I/O cable length
10 m maximum
06
Feedback
Confirm TTL or HTL encoder
Digital setpoint resolution
0.01 Hz
Analog setpoint resolution
10 bit
Control frequency profile
V/f 0–650 Hz · Vector 0–200 Hz
07
Temperature input
PTC or KTY84; PT1000 is unsupported
Order boundary
CU240S and the Power Module must be checked as one configured drive system.
Lifecycle signal
Legacy CU240S generation · migration review required.
02 · Communication and Migration Path

A compact four-stage route from identification to recommissioning.

Compatibility depends on the installed Power Module, terminal program, RS485 network, encoder, temperature input, firmware and parameter set—not physical appearance alone.

01

Identify

Record the CU, Power Module, firmware, BOP or STARTER method and MMC use.

02

Map

Capture terminal functions, analog ranges, encoder and motor-temperature wiring.

03

Verify

Check RS485P pin 3, 0 V pin 5, RS485N pin 8, address and termination.

04

Migrate

Select a second-generation CU only after every interface and parameter is reviewed.

Retain the installed reference

Match 6SL3244-0BA20-1BA0 exactly when an identical CU240S is required.

Separate compatibility from appearance

A matching outline does not confirm Power Module, I/O, encoder or firmware compatibility.

Plan the migration as a project

Siemens documents CU240S migration to second-generation CUs; recommissioning and parameter review remain necessary.

Replacement check: Match the installed Power Module, USS/RS485 wiring, I/O assignment, encoder type, firmware and saved parameter set to 6SL3244-0BA20-1BA0.
03 · FAQ

Buyer questions for Siemens 6SL3244-0BA20-1BA0

Q01
What I/O configuration does Siemens 6SL3244-0BA20-1BA0 provide?
Siemens 6SL3244-0BA20-1BA0 provides nine programmable digital inputs, three programmable relay outputs, two analog inputs and two analog outputs. Its two analog inputs can also be configured as additional digital inputs.
Q02
Which communication interface is built into Siemens 6SL3244-0BA20-1BA0?
Siemens 6SL3244-0BA20-1BA0 uses USS over RS485 through a 9-pin female Sub-D connector, with a published maximum baud rate of 115200 bit/s. Confirm the address, wiring, shield and termination before commissioning.
Q03
Which drive applications and Power Modules should be checked for Siemens 6SL3244-0BA20-1BA0?
Siemens 6SL3244-0BA20-1BA0 is intended for established SINAMICS G120 applications using terminal control and USS communication. Check the installed Power Module generation and PM-IF interface, required control mode, firmware and commissioning data before selection.
Q04
Which encoder and motor-temperature devices work with Siemens 6SL3244-0BA20-1BA0?
Siemens 6SL3244-0BA20-1BA0 supports one TTL or HTL encoder interface and PTC or KTY84 motor-temperature sensing. PT1000 is not supported by the CU240S.
Q05
How should a replacement for Siemens 6SL3244-0BA20-1BA0 be selected?
Select a replacement only after checking the installed Power Module, I/O, encoder, communication, firmware and parameter set. Siemens documents migration from CU240S to second-generation Control Units, so the change requires engineering and recommissioning rather than a drop-in swap.
Q06
Which official documents and order details are needed to quote Siemens 6SL3244-0BA20-1BA0?
Use the Siemens CU240S Operating Instructions, Getting Started guide and migration guide. For a quotation, provide the full nameplate, firmware, Power Module number, I/O wiring, RS485 settings, encoder, MMC or BOP details, quantity, destination and required date.
04 · Why Choose Us

Industrial supply support without visual or information clutter.

Six practical service commitments arranged as one concise supply ledger.

01
☑  Thousands of suppliers and a wide range of products allow you to experience a one-stop shop.
02
☑  The highest quality product.
03
☑  Most products have a warranty period of up to one year, and any quality issues will be refunded at our expense. Each item undergoes rigorous testing before delivery.
04
☑  Our sales personnel provide you with over 10 hours of service and promptly respond to your inquiries.
05
☑  Quickly deliver all products within 1-3 days after placing an order. Most goods will be delivered to you in a timely manner through DHL's fastest service.
06
☑  Good packaging ensures transportation safety and greatly saves transportation costs.
10+
Years of practical automation sourcing experience
05 · Professional Team

Experience, product judgment and patient service.

A compact team profile presented in three complete, full-width narratives.

Nearly 10 Years of Industry Experience

Our team members have an average of more than 10 years of industry experience. We have worked with customers worldwide, including those from India, Germany, Sweden, Italy, Russia, Venezuela, Israel, and many other countries. Throughout our careers, we have collectively completed over 3,000 orders and established long-term business relationships with customers across nearly 30 countries.

Professional Product Judgment

We can often identify a product’s manufacturer, series, configuration, and function from its model number or nameplate photo. We also understand how revisions, firmware, and specifications affect compatibility and whether an alternative model can be used safely.

In Practice: An Indian customer urgently needed a discontinued control module after several suppliers reported no stock. We identified its exact revision and function from the nameplate, checked compatible alternatives, and contacted factory and warehouse channels to locate matching inventory. After installation, the customer confirmed that the module operated correctly and later asked us to source additional spare parts.

Sincere and Patient Service

Our team treats every inquiry sincerely and answers every question patiently. Even for complex requests, we verify and respond to each detail instead of providing a rushed or uncertain answer.

In Practice: A German customer sent a mixed list of automation products and asked repeated questions about revisions, condition, photos, and delivery. Our team organized the requirements, checked every item, and replied point by point. The customer said our detailed communication made the purchasing decision easier and continued sending us new inquiries.

06 · Mixed Model Reference

Additional hard-to-find automation references

A deliberately mixed selection from the supplied model document.

01METSEPM5320
02BBC DC374E
03FHSC-S
04ABB 129A501G01 FT1-001 FT-1
05722/921 3953-5722 722/221CA/0
06TSX3710001 TSXDMZ28DR TSXDEZ12D2
07MP-3Kpa
08JASP-WRCF01 REV: C02
0951305348-100
10N2024
11CQM1H-CPU21 & PD026 & ID212 & IPS01 & AD041 & B7A21
12AMAX-2241/PMA
13ABB DI88 3BSE028586R1 3BSE020850R1
143500/25 126398-01G
15051204-M
16SC42-EP08
173500/15 125840-02
18PDL4335
19IO-35G01476-01
20TSXRKZ02 TSXASZ200 TSXAEZ802
21PT5000C
22EL900-AD-1-C
23cTRL2
24NB-N500420A-US
255210003-00A
26PXC00.D
27MS-DIS1710-0
28800T-FX6D2
29523-000050-20
30SMG 2S KNX, 4910273
31202565/20-888-888-310-310-23/000
32GA-ADR.E01 GA-ADR.E1-8
33201-928.CE.P
34ABB PM582 / 1SAP140200R0100
3559335-10
36900-SDI / SE-900-SDI / SE-900
372012-151 WM-48B1R
38330180-X1-00
39LCA 245
Request a Quote

Ask about Siemens 6SL3244-0BA20-1BA0.

Send the nameplate, Power Module, firmware, quantity, destination and required date.

Sales contact
Sales Manager May

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