Siemens LOGO! DM8 24 Expansion Module (6ED1055-1CB00-0BA2)
Siemens LOGO! DM8 24 Expansion Module (6ED1055-1CB00-0BA2) is a compact I/O expansion module for LOGO! 8 controllers. It operates on 24 V DC and provides 4 digital inputs and 4 digital transistor outputs, enabling flexible I/O expansion for industrial and building automation systems across the UAE.
The Siemens LOGO! DM8 24 (6ED1055-1CB00-0BA2) is an expansion module designed to extend the input and output capabilities of LOGO! 8 basic units. Engineered for 24 V DC systems, this module adds reliable digital I/O capacity to compact automation installations while maintaining a minimal footprint on the DIN rail.
The module provides 4 digital inputs for processing field signals and 4 digital transistor outputs for controlling actuators and devices. Integrated short-circuit protection on the outputs enhances operational safety and system reliability, especially in control panels where continuous operation is required.
Designed for seamless integration with LOGO! 8 controllers, the DM8 24 supports fast signal processing and stable switching behavior for both resistive and inductive loads within specified limits. Its compact design allows efficient panel layout and straightforward expansion of existing automation systems.
As a trusted supplier of Siemens automation components,
Bardia Control Systems
supplies original Siemens LOGO! expansion modules with technical support and delivery across the UAE. Additional compatible components are available in our
Siemens Automation Technology
range.
For independent background and practical context on PLC I/O expansion and control concepts, refer to:
What Is a PLC and How Does It Work?
Technical Specifications
| Brand | Siemens |
| Product Family | LOGO! 8 Expansion Modules |
| Model | LOGO! DM8 24 |
| Part Number | 6ED1055-1CB00-0BA2 |
| Product Type | Digital I/O Expansion Module |
| Mounting Type | 35 mm DIN rail (2 spacing units wide) |
| Supply Voltage (DC) | 24 V DC |
| Permissible Voltage Range | 20.4 – 28.8 V DC |
| Digital Inputs | 4 DI |
| Input Voltage (Signal 0) | < 5 V DC |
| Input Voltage (Signal 1) | > 12 V DC |
| Input Current (Signal 0) | Max. 0.88 mA |
| Input Current (Signal 1) | Typ. 2.1 mA |
| Input Delay | Max. 1.5 ms (0→1 / 1→0) |
| Digital Outputs | 4 DO (Transistor) |
| Output Current | 0.3 A per output |
| Short-Circuit Protection | Yes |
| Switching Frequency (Resistive) | Max. 10 Hz |
| Switching Frequency (Inductive) | Max. 0.5 Hz |
| Degree of Protection | IP20 |
| Operating Temperature | 0 °C to +55 °C (ES03+: -20 °C to +55 °C) |
| Dimensions (W × H × D) | 35.5 × 90 × 58 mm |
| Standards & Approvals | CE, CSA, UL, FM, Marine |
| Standards Compliance | IEC 61131, VDE 0631 |
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