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PRODUCT DESCRIPTION
Four-channel DC expansion for a LOGO! 8 controller
Siemens 6ED1055-1CB00-0BA2 is a LOGO! DM8 24 expansion module for 24 V DC control circuits. It adds four digital inputs and four current-sourcing transistor outputs to a compatible LOGO! 8 base module, with a maximum output current of 0.3 A per channel.
The 35.5 mm-wide module fits a 35 mm DIN rail and operates from 20.4 to 28.8 V DC. Match the base-module voltage class, input signal levels and expansion order before connection; this digital module does not provide its own controller program or Ethernet interface.
The 35.5 mm-wide module fits a 35 mm DIN rail and operates from 20.4 to 28.8 V DC. Match the base-module voltage class, input signal levels and expansion order before connection; this digital module does not provide its own controller program or Ethernet interface.
BEFORE YOU BUY
Check the DC expansion and load arrangement
ACTUAL APPLICATIONS
Where 6ED1055-1CB00-0BA2 fits in compact automation
Siemens LOGO! application examples inform these system-level uses. The expansion module adds I/O; the base program, wiring and connected loads require separate validation.
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01 · IRRIGATION
Additional irrigation valve commands
Siemens lists greenhouse irrigation as a LOGO! application. This DC expansion can add discrete valve commands and feedback signals to that type of system, provided the valve load and any interposing devices meet the output ratings. -
02 · CONVEYOR CONTROL
Sensor interlocks along a conveyor
The Siemens conveyor-control example provides a basis for adding discrete position or presence signals. Use the four extra inputs for the engineered interlocks and select appropriately rated switching interfaces for actuators. -
03 · PARKING SURVEILLANCE
Occupancy signals and local indication
For the LOGO! parking-surveillance application described by Siemens, a DM8 24 can extend compatible occupancy-switch inputs and low-current status indications. The base controller performs the counting or timing logic.
Technical specifications for 6ED1055-1CB00-0BA2
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Product Model6ED1055-1CB00-0BA2
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Product ParametersLOGO! DM8 24 Expansion Module
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In stock1 unit
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ManufacturerSiemens
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Supply voltage24 V DC; permissible range 20.4–28.8 V DC
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Digital inputs4 non-isolated DC inputs
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Input thresholdsSignal 0: below 5 V DC; signal 1: above 12 V DC
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Input currentSignal 1 typ. 2.1 mA; signal 0 max. 0.88 mA
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Input delayRising and falling max. 1.5 ms
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Digital outputs4 sourcing transistors; max. 0.3 A per channel
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Output protectionShort-circuit and overload protection
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Switching frequencyMax. 10 Hz resistive; 0.5 Hz inductive
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Mounting35 mm DIN rail; two module widths
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Operating temperature−20 to +55 °C; no condensation
View all additional
Alternative Names
6ED1055-1CB00-0BA2
LOGO! DM8 24
Siemens LOGO! 4DI 4DO Expansion
SYSTEM & REPLACEMENT CHECK
Information needed before ordering
Three direct checks to secure your system integration and minimize ordering risks.
Information
System integration
Replacement check
Manuals & support
LOGO! 8 DIGITAL EXPANSION
Add DC switching points without changing the controller role
6ED1055-1CB00-0BA2 exchanges digital states with the LOGO! 8 base module through its expansion interface. The base module executes the control program; this DM8 unit supplies four additional inputs and four outputs.
Its outputs source current from the 24 V DC supply and are not isolated relay contacts. Keep each load within 0.3 A and do not connect outputs in parallel to increase the permitted current.
Siemens recommends placing digital expansions before analog expansions. Latch the slide connector and energize the expansion supply before, or at the same time as, the base supply so the module is detected.
Features:
- Exact Siemens order code: 6ED1055-1CB00-0BA2
- LOGO! DM8 24 with 4 DI and 4 transistor outputs
- Check sourcing loads and the power-up sequence
The Siemens 6ED1055-1CB00-0BA2 LOGO! DM8 24 requires its supply, terminal assignment and base-module arrangement to be checked before system integration and commissioning.
INTERCHANGEABILITY
Verify the complete replacement identity before commissioning
Use the complete 6ED1055-1CB00-0BA2 identity when replacing a LOGO! DM8 24 expansion. Do not substitute a DM8 relay variant solely because the enclosure and terminal count look similar.
Record the installed expansion position and field-wire labels before removal. Check for external load faults and verify the 24 V DC reference and current budget before reconnecting the four outputs.
Siemens documents the 6ED1055-1XXXX-0BA2 expansion family for LOGO! 8. Confirm the existing base-module family and voltage-class table; do not assume compatibility with earlier LOGO! generations.
Features:
- Match the complete 6ED1055-1CB00-0BA2 order code
- DC supply and sourcing-output load current
- Base-module voltage class and expansion sequence
The Siemens 6ED1055-1CB00-0BA2 LOGO! DM8 24 requires replacement verification of electrical ratings, expansion order, field wiring and the base-module project before commissioning.
DOCUMENTATION STATUS
Browse the Manuals, Datasheets, Official Documents, Links
Important Notice: Selected official pages are included in the Amikon document packages. Accessories, cables, software and certificates are supplied only when listed in the quotation.
Features:
- Available Siemens document references are confirmed before order
- Software licensing and project backups remain the customer's responsibility
- Accessories are supplied only when listed in the quotation
Documentation for the Siemens 6ED1055-1CB00-0BA2 LOGO! DM8 24 documents must match the complete article number and installed expansion arrangement; confirm manual availability in the written quotation.
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Important notice
Manuals, software, firmware, cables, calibration data and accessories are included only when listed in the quotation. AMIKON is an independent supplier and is not affiliated with or authorised by the manufacturer.
This content has been produced using multiple sources. Takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
BUYER INFORMATION
Commercial terms without hidden steps
Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.
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Shipping & delivery
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DispatchEligible stock: same / next day
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CarriersDHL, FedEx or UPS
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Ship fromXiamen, China
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Packed size7.00 × 9.60 × 5.50 cm
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Shipping weightApprox. 0.10 kg
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Payment & customs
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PaymentBank transfer (T/T)
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CurrenciesUSD · EUR · GBP · RMB
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Credit cardsNot accepted
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HS reference8538900000
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OriginChina
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Warranty & returns
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Warranty12 months from AMIKON
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InspectionLabel, condition and packing checks
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ReturnsPrior RMA authorisation required
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CompatibilityConfirm before order
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OEM warrantyDoes not apply
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Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.
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Dedicated account manager · 15+ years
FREQUENTLY ASKED QUESTIONS
Questions buyers ask about 6ED1055-1CB00-0BA2
Direct answers about identity, compatibility, stock, warranty, payment and shipping.
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Can 6ED1055-1CB00-0BA2 run a machine without a LOGO! base module?
No. It is a digital expansion, not a standalone controller. A compatible LOGO! 8 base module must execute the program and exchange I/O states through the side expansion connection. -
Will a 0.5 A solenoid fit the transistor output rating?
Not directly: each output is limited to 0.3 A. Use a suitably engineered interposing device and check the inductive load, suppression and switching duty before connecting the solenoid. -
Can two DM8 24 outputs be joined to obtain a higher current?
No. Siemens explicitly prohibits paralleling the outputs to increase current capacity. Select an external switching device rated for the actual load instead. -
Does a 12 V LOGO! control panel provide enough voltage for this expansion?
The DM8 24 itself requires 20.4–28.8 V DC. A 12 V supply is below its permitted range even when the selected base-module family is otherwise compatible; verify the complete supply arrangement. -
Can these added inputs count a high-speed encoder?
The DM8 24 has no high-speed inputs. Siemens specifies a maximum normal-input frequency of 4 Hz; do not transfer a high-speed counter channel from a base module to this expansion. -
Why must pulse-sensitive actuators be assessed at power-up?
The LOGO! manual warns that DM8 24 transistor outputs can receive a signal-1 pulse of about 50 microseconds during switch-on. Evaluate the response of the connected actuator and the machine startup design before commissioning. -
What leakage current matters when selecting a two-wire DC sensor?
For a low input state, the exact datasheet specifies below 5 V DC and a maximum quiescent current of 0.88 mA. Check the sensor off-state leakage and the installed circuit against both limits. -
Can a distributor fulfil this order with a pre-LOGO! 8 expansion carrying a similar name?
Do not approve that substitution from the DM8 24 name alone. The required article is 6ED1055-1CB00-0BA2; Siemens identifies the 0BA2 expansion family for LOGO! 8, so the full supplier line item and installed base family must agree.
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