Description
The Nabco MC-151-13A (Part Number 885 73751903) is a specialized Control Logic PCB Card used extensively in Nabco’s marine propulsion remote control systems. This module is typically found in the main control cabinets of shipboard maneuvering systems, where it manages the complex logic required for safe engine operation, including starting/stopping sequences, direction reversals, and speed governing interfaces. As a critical component in bridge-to-engine communication, it ensures that command signals from the bridge telegraph are accurately interpreted and executed by the engine’s mechanical or electronic governor systems.
Key Technical Specifications
| Parameter | Value/Description |
| Part Number | 885 73751903 (MC-151-13A) |
| Component Type | Control Logic PCB Card |
| System Compatibility | Nabco MGS / Remote Control Series |
| Function | Command logic processing & engine synchronization |
| Inputs/Outputs | Digital logic and analog command signals |
| Operating Voltage | 24V DC nominal |
| Control Logic | Proprietary Nabco maneuvering algorithms |
| Interface | Standard multi-pin PCB edge connectors |
| Mounting | Control rack/chassis mount |
| Environment | Industrial marine-grade (vibration resistant) |
Recommended Related Models
These components are often found within the same control cabinets as the MC-151 series, working in tandem to maintain propulsion control integrity:
- MC-151-13B: Updated/Enhanced logic card variant
- MG-101: Governor Control Interface Module
- MT-102: Telegraph/Command Signal Processor
- PI-104: Pitch Indicator Feedback Card
- SA-105: Servo Actuator Control Module
- PS-106: Control Rack Power Supply Unit
- LM-107: Alarm and Lamp Control Board
- BC-108: Bridge Command Terminal Interface
- RE-109: Relay Interface Module
- DI-110: General Digital I/O Expansion Board
Important Technical Note: The MC-151-13A is a logic-intensive board. It often includes hardware-level settings (such as dip-switches or miniature potentiometers) that define specific timing sequences for engine reversal or start-up delays. When installing a replacement, it is vital to verify that these settings are identical to the original card’s configuration. Mismatched timing parameters can lead to “Command Time-Out” alarms or, in severe cases, improper engine reversals during critical maneuvering situations.
