Technical Specifications
- Product Model: DIO1037A
- Brand: ULSTEIN PROPELLER A/S
- Warranty: One Year
- Input Voltage: 24 VDC marine control supply
- Operating Temperature: -10°C ~ +55°C
- Storage Temperature: -25°C ~ +70°C
- Response Time: ≤ 100ms digital signal processing latency
- Protection Class: PCB conformal coating; installed inside marine control cabinet
- Accuracy Class: N/A
- Output Frequency: N/A
- Rated Current Range: Max 0.6 A continuous power consumption
- Communication Interface: Edge backplane connector, screw terminal field interface
- Supported Protocols: Proprietary Ulstein propulsion control bus protocol
- Overload Capacity: Reverse polarity protection, EMC transient surge suppression, channel isolation
- Dimensions (W×H×D): 160 mm × 130 mm × 38 mm, plug-in printed circuit board form factor

Product Overview
The ULSTEIN DIO1037A is a plug-in digital I/O interface PCB developed for Ulstein marine propulsion and azimuth thruster control systems. This circuit board serves as the signal gateway between the main propulsion controller and field-mounted sensors, limit switches and relay actuators, resolving unstable digital signal transmission caused by engine room vibration, humidity and electrical interference. Marine electrical officers, ship service technicians and spare parts specialists supporting ULSTEIN thruster systems rely on this I/O card to maintain closed-loop propulsion supervision. It collects digital status feedback from thruster assemblies and executes command outputs for safety interlocks, forming an essential replacement spare for dynamic positioning and propulsion automation onboard offshore and commercial vessels. (Word count: 169)
Key Functions
- Bidirectional Digital Signal Acquisition & Output: Processes multiple channels of digital input signals from position sensors, temperature switches and mechanical limit contacts. Relay outputs transmit control commands to auxiliary actuators, alarms and safety interlock circuits for thruster units.
- Propulsion System Signal Isolation & Filtering: Onboard isolation circuitry suppresses electromagnetic noise common in vessel power distribution environments. Filtered signals reduce false status triggering that could disrupt thruster positioning and DP operation.
- Backplane System Bus Communication: The edge connector interfaces with the main control rack backplane to exchange real-time thruster operational data. Synchronised data communication ensures consistent coordination between master controller and field-side equipment.
- Marine-Grade Conformal Coated Circuitry: Protected PCB assembly prevents corrosion from salt mist, condensation and airborne contaminants. This construction extends service life within unconditioned machinery spaces onboard seagoing vessels.

