PLC, PAC, & Dedicated Controllers
Siemens LOGO! DM8 24R Expansion Module 6ED1055-1HB00-0BA2
The Siemens LOGO! DM8 24R is a compact digital expansion module for LOGO! 8 controllers. It adds four digital inputs and four relay outputs to a compatible control system. The module accepts 24 V AC/DC input signals, supports NPN input operation, and mounts on a standard 35 mm DIN rail.
Specifications
- Type
- Powder-coated steel with cork feet
- Application
- Electronic Equipment, Industrial Automation, Industrial Control, PLC Programming
- Product name
- Siemens PLC LOGO! DM8 24R
Key Features
- Exact order number: 6ED1055-1HB00-0BA2
- Four digital inputs and four relay outputs
- Rated supply: 24 V AC or 24 V DC
- Permissible DC supply range: 20.4–28.8 V
- Relay capacity: up to 5 A resistive load or 3 A inductive load
- Compact 35.5 × 90 × 58 mm enclosure
- 35 mm DIN-rail mounting, two spacing units wide
- IP20 protection for installation inside a suitable control enclosure
Product Overview
The DM8 24R is designed for automation projects that need additional discrete inputs and relay outputs without replacing the LOGO! base controller. It can receive status signals from switches, sensors and interlocks, then switch compatible loads through four relay channels. Common uses include machine control, building automation, pump systems, lighting control, ventilation equipment and compact process panels.
Technical Specifications
Parameter | Value |
|---|---|
Product type | Digital expansion module |
Order number | 6ED1055-1HB00-0BA2 |
Compatible platform | LOGO! 8 |
Digital inputs | 4 |
Digital outputs | 4 relay outputs |
Rated supply | 24 V AC/DC |
Permissible DC range | 20.4–28.8 V DC |
AC line frequency | 47–63 Hz |
Signal “0” | Below 5 V AC/DC |
Signal “1” | Above 12 V AC/DC |
Relay output, resistive load | 5 A maximum |
Relay output, inductive load | 3 A maximum |
Lamp load | 1000 W maximum |
Protection rating | IP20 |
Mounting | 35 mm DIN rail |
Dimensions | 35.5 × 90 × 58 mm |
Operating temperature | 0 to 55 °C; ES03 and higher: minimum −20 °C |
Typical Applications
- Small machine and production-line control
- Building lighting and HVAC logic
- Pump, fan and motor-control panels using suitable contactors
- Alarm, interlock and status-monitoring circuits
- Control-panel upgrades requiring additional digital I/O
- Automation training rigs and prototype systems
Why Choose the DM8 24R?
The module combines AC/DC digital-input flexibility with relay outputs in a compact enclosure. Its exact part number makes replacement and system matching straightforward, while DIN-rail installation supports clean integration into existing control panels.
Compatibility and Installation Notes
Confirm the base controller, voltage class, module revision and order number before purchase. The relay outputs are not short-circuit protected. Use correctly rated protective devices, contactors and enclosures, and have wiring completed by qualified personnel in accordance with local electrical standards.
Frequently Asked Questions
How many I/O channels does the DM8 24R add?
It adds four digital inputs and four relay outputs, for eight additional discrete I/O points.
Can the module operate from AC and DC power?
Yes. The rated supply is 24 V AC or 24 V DC. The permitted DC supply range is 20.4–28.8 V.
What is the maximum relay current?
Each relay output is rated up to 5 A for resistive loads and up to 3 A for inductive loads, subject to the complete system design and applicable derating.
Does it fit a standard control-panel rail?
Yes. It mounts on a 35 mm DIN rail and occupies two spacing units.
Is the DM8 24R suitable for outdoor installation?
The module is rated IP20 and should be installed inside a suitable enclosure that provides the environmental protection required by the application.
What should be checked before ordering?
Verify the order number 6ED1055-1HB00-0BA2, controller compatibility, supply voltage, output-load type, module revision and required certifications.
Suggested Image Alt Text
- DM8 24R expansion module 6ED1055-1HB00-0BA2 product overview
- DM8 24R four digital inputs and four relay outputs infographic
- DM8 24R 24 V AC DC power and input specification chart
- DM8 24R relay output capacity for resistive and inductive loads
- DM8 24R DIN rail mounting dimensions and IP20 specification
- DM8 24R expansion module automation application examples
