Description
The SM Electrics GmbH A067.74 mtBUS Controller is a marine Engine Order Telegraph (EOT) control unit designed to manage and monitor connected bridge, engine control room, and engine room telegraph stations. It acts as the central controller within the A067 Engine Order Telegraph System, providing communication management, system diagnostics, and interface functions for propulsion control-related equipment.
The A067.74 controller uses the SM Electrics mtBUS RS485 communication network and provides interfaces for propulsion remote control systems, VDR (Voyage Data Recorder), ER call, and alarm systems. It is typically installed in the engine control room console and provides local system information through an LCD display for commissioning and maintenance purposes.
A067.74
Product Specifications
| Parameter | Description |
|---|---|
| Brand | SM Electrics GmbH |
| Model | A067.74 |
| Series | A067 Engine Order Telegraph System |
| Product Name | mtBUS Controller Engine Order Controller Unit |
| Product Type | Marine Communication & Control Module |
| Function | Controls and monitors EOT network units, manages propulsion command communication |
| Communication Interface | mtBUS RS485 communication |
| Additional Interfaces | VDR interface, ER call, alarm system interface, propulsion RCS interface |
| Display | 4-line × 20-character LCD system diagnosis display |
| Supply Voltage | 24 VDC nominal |
| Power Consumption | Approx. 2–3 W |
| Mounting Type | TS35 DIN rail mounting |
| Communication Network | Bidirectional mtBUS technology |
| Application | Engine Order Telegraph and marine propulsion control systems |
| Protection Rating | Industrial marine installation environment |
| Place of Manufacture / Origin | Germany |
| Product Status | Legacy Marine Spare Part |
| Dimensions | Compact DIN rail controller format |
| Weight | Approx. 0.3–0.5 kg |
| Country of Origin | Germany |
| Power Requirements | 24 VDC |
Key Features
✅ Original SM Electrics marine mtBUS controller
✅ Central management unit for Engine Order Telegraph systems
✅ Supports RS485-based mtBUS communication
✅ Provides LCD-based system diagnostics
✅ Includes VDR and propulsion system interfaces
✅ Designed for marine bridge and engine room communication applications
Applications
• Marine Engine Order Telegraph (EOT) systems
• Emergency Engine Order Telegraph (EEOT) systems
• Ship propulsion control interfaces
• Engine control room communication systems
• Bridge command transmission systems
• Marine automation and alarm systems
Frequently Asked Questions
❓ Q: What is the SM Electrics A067.74 used for?
A: The A067.74 is an mtBUS Controller used as the central communication and monitoring unit for SM Electrics Engine Order Telegraph systems.
❓ Q: Is the A067.74 a PLC module?
A: No. It is a dedicated marine communication and control unit for engine order telegraph applications, not a general-purpose PLC CPU.
❓ Q: What communication protocol does the A067.74 use?
A: It uses SM Electrics mtBUS RS485 communication technology for connecting EOT system components.
❓ Q: What interfaces are available on this controller?
A: The controller provides interfaces for propulsion remote control systems, VDR, ER call functions, and alarm systems.
❓ Q: What power supply does the A067.74 require?
A: The controller operates on a 24 VDC nominal marine control power supply.
Recommended SM Electrics Related Models
- SM Electrics A067.74-VDR – mtBUS Controller with VDR Interface
- SM Electrics A067.5011-000-0700 – EOT Telegraph Transmitter Unit
- SM Electrics A067.5021-000-0700 – EOT Telegraph Receiver ECR Unit
- SM Electrics A067.5032-100-0740 – Engine Room Telegraph Receiver with Bell
- SM Electrics A067.2313-431-0111 – EOT Bridge Lever Unit
- SM Electrics A067.1252-000-0111 – Small Control Lever Unit
- SM Electrics A067.3252-000-0211 – Double Control Lever for Wing Console
- SM Electrics A067.T0-8221e – ECR/ER Change Over Switch
- SM Electrics 2000103003 – mtBUS Controller Assembly
- SM Electrics 2080099585 – Telegraph Transmitter WH
- SM Electrics 2080101154 – Telegraph Receiver ECR
- SM Electrics 2080101236 – Telegraph Receiver ER with Bell
- SM Electrics EOT A067 Series – Engine Order Telegraph System Components
- SM Electrics EEOT A067 Series – Emergency Engine Order Telegraph System Components
- SM Electrics Marine Alarm & Communication Systems – Integrated Ship Control Interface Products.
