Siemens 6ED1052-1FB08-0BA2 LOGO! Logic Relay with Display Base Module

Order No.: 6ED1052-1FB08-0BA2

6ED: LOGO! logic relay series

1052: Basic base unit

1: Version with onboard display (2 = Pure version without display)

FB: 230V AC/DC power supply, relay output (LOGO! 230RCE)

08: LOGO! 0BA8 hardware platform (8th generation)

0BA2: Firmware V8.4, supports MQTT & cloud connection; direct upgrade replacement for 6ED1052-1FB08-0BA0

📌 Key Technical Specifications

Item	Specification
Full Product Name	LOGO! 230RCE Logic Module
Power Supply	AC/DC 115V~230V (47~63Hz)
I/O Configuration	8 digital inputs (DI) / 4 relay outputs (DO)
Relay Contact Rating	Max. 10A for resistive loads; max. 3A for inductive loads; no built-in short-circuit protection; external fuses are required
Program Capacity	Up to 400 function blocks; 400 built-in timer clocks
RTC Backup Battery	480 hours (20 days)
Communication	Ethernet port, integrated Web Server, data logging, custom web pages; MQTT & LOGO! cloud connection supported
Storage	MicroSD card slot for program backup and data logging
Mounting	DIN rail mounting
Dimensions	90 × 71.5 × 60 mm, net weight 0.274 kg
Operating Temperature	-20℃ ~ +55℃
Certifications	CE, UL, EMC Class B (suitable for residential areas)
Programming Software	LOGO!Soft Comfort V8.4 or highercache.indu…

⚙️ Key Features

Onboard LCD with keypad; status viewing and parameter modification on-site without a PC
Modular expansion: digital & analog expansion modules available to extend I/O points
Ethernet functions: web-based monitoring, remote access, MQTT connection to HMI/IoT platforms
Data logging function; runtime logs stored on MicroSD card
Fully backward-compatible with older LOGO! projects; legacy programs can be ported directly

🧩 Selection & Replacement Information

Predecessor model: 6ED1052-1FB08-0BA0 (discontinued). 0BA2 is a direct pin-to-pin replacement with identical wiring terminals.

Same-series comparison

6ED1052-2FB08-0BA2: LOGO! 230RCEO, Pure version without display, same electrical specifications

6ED1052-1HB08-0BA2: LOGO! 24RCE, 24V AC/DC power supply, relay output

Domestic alternative reference: small logic relays from Chint/Delixi; however, communication protocols and function block libraries differ greatly, and programs cannot be migrated directly.

🛠 Typical Application Scenarios

HVAC fan & pump control, lighting sequence control, door access control, small production lines, heat exchanger stations, building water supply & drainage, low-cost alternative to small PLCs, remote web monitoring.

⚠️ Maintenance & Troubleshooting Tips

Relay outputs are mechanical contacts. For frequent switching of inductive loads (contactors, solenoid valves), install RC snubber circuits to extend contact service life.
Program upload/download requires LOGO!Soft Comfort V8.4 or newer; older software cannot recognize the 0BA2 hardware.
The MicroSD card only supports LOGO! dedicated format; standard file systems cannot read log data directly.
The RTC backup only lasts around 480 hours; the system time will be lost after prolonged power failure.

LOGO! Program Migration Checklist: 0BA0 (6ED1052-1FB08-0BA0) → 0BA2 (6ED1052-1FB08-0BA2)

Preconditions (Mandatory)
Software Version: Install LOGO!Soft Comfort V8.4 (with SP1). V8.2/V8.3 cannot recognize 0BA2 hardware and cannot download programs.
Hardware Verification

Base Unit: 0BA0 and 0BA2 have identical terminal assignments; direct plug-and-play replacement without rewiring.

Expansion Modules: Only 0BA8-series modules with suffix -0BA2 are supported; old 0BA6/0BA7 modules are incompatible and must be replaced entirely.

Back up the original project and save a copy before upgrading.
Full Series Model List (LOGO! 0BA8 / V8.4 / 0BA2)

1) Base Units (6ED1052, 0BA2 latest firmware, Ethernet + MQTT)

With Display (1 = with display)

Order No.	Model	Power Supply	I/O	Output Type
6ED1052-1FB08-0BA2	LOGO! 230RCE	AC/DC 115~230V	8DI / 4DO	Relay (10A)
6ED1052-1HB08-0BA2	LOGO! 24RCE	AC/DC 24V	8DI / 4DO	Relay
6ED1052-1CC08-0BA2	LOGO! 24CE	DC24V	8DI (4AI) / 4DO	Transistor 0.3A
6ED1052-1MD08-0BA2	LOGO! 12/24RCE	DC12/24V	8DI (4AI) / 4DO	Relay

Pure Version without Display (2 = no display, suffix RCEO/CEO)

Order No.	Model	Power Supply	Output Type
6ED1052-2FB08-0BA2	LOGO! 230RCEO	AC/DC 230V	Relay
6ED1052-2HB08-0BA2	LOGO! 24RCEO	AC/DC 24V	Relay
6ED1052-2CC08-0BA2	LOGO! 24CEO	DC24V	Transistor
6ED1052-2MD08-0BA2	LOGO! 12/24RCEO	DC12/24V	Relay

Older Firmware (Discontinued: 0BA0 / 0BA1)

0BA0 (V8.2): 6ED1052-1FB08-0BA0 (original model before replacement)

0BA1 (V8.3): 6ED1052-1FB08-0BA1

Replacement Rule: 0BA0 → 0BA2, fully pin-compatible, direct swap without wiring changes.

2) Digital Expansion Modules DM (6ED1055, suffix -0BA2 only, for 0BA8 hosts only)

DM8 (4DI + 4DO)

Order No.	Model	Power Supply	Output
6ED1055-1FB00-0BA2	DM8 230R	AC/DC 230V	Relay
6ED1055-1HB00-0BA2	DM8 24R	AC/DC 24V	Relay
6ED1055-1CB00-0BA2	DM8 24	DC24V	Transistor
6ED1055-1MB00-0BA2	DM8 12/24R	DC12/24V	Relay

DM16 (8DI + 8DO)

Order No.	Model	Power Supply	Output
6ED1055-1FB10-0BA2	DM16 230R	AC/DC 230V	Relay
6ED1055-1NB10-0BA2	DM16 24R	DC24V	Relay
6ED1055-1CB10-0BA2	DM16 24	DC24V	Transistor

3) Analog Expansion Module AM (6ED1055)

Order No.	Model	Channels	Specifications
6ED1055-1MA00-0BA2	LOGO! AM2	2 AI	0~10V voltage input

4) Text Display TDE (Only compatible with 0BA8 hosts; old TD displays are not supported)

Order No.	Model	Description
6ED1055-4MH08-0BA1	LOGO! TDE	0BA8-specific Chinese text display with keypad

III. Model Naming Rule (Quick Decoding)

6ED1052 1 F B 08 0BA2

1 = with onboard display; 2 = Pure version without display
FB = 230V relay output; HB = 24V relay output; CC = 24V transistor output; MD = 12/24V relay output
08 = 0BA8 hardware platform
0BA2 = V8.4 firmware (MQTT + cloud); 0BA0 = V8.2; 0BA1 = V8.3
Compatibility Restrictions (Strict Compliance Required)
0BA8 base units only work with -0BA2 expansion modules. 0BA6/0BA7 legacy modules cannot be mixed and must be replaced entirely.
Old LOGO! TD displays cannot connect to 0BA2 hosts; TDE must be used instead.
Software requirement: LOGO!Soft Comfort V8.4 or higher for 0BA2 hardware.
Simplified Selection Table (Matching 6ED1052-1FB08-0BA2 Project)
Base Unit Replacement

Old: 6ED1052-1FB08-0BA0 → New: 6ED1052-1FB08-0BA2 (direct drop-in replacement)