Multi-Turn Electric Underwater Actuators Products Guide

The actuators support RS422 (RS485 full duplex on 4 wires) and RS232 serial communication at 19200 baud (8, N, 1). Communication parameters and configuration settings are stored in onboard EEPROM, allowing persistent configuration across power cycles without reconfiguration.

The actuator uses a 30-bit absolute encoder — 14-bit single turn (16,383 counts/turn) plus a 16-bit turns counter — mounted on the output shaft. This ensures exact position data is retained between power cycles, so the actuator does not need rehoming after a power loss, which is critical in remote or deep-water deployments.

The Rotary Actuator – Self Compensated achieves a position precision of 0.1 degrees at the output shaft. This high-resolution control makes it suitable for applications requiring accurate angular positioning, such as subsea valve control, robotic manipulators, and underwater inspection equipment.

These actuators are designed for underwater remotely operated vehicles (ROVs), deep-sea robotic manipulators, subsea valve and equipment control, ocean research systems, and underwater inspection and cleaning platforms. Their self-contained design and deep-water rating make them ideal for demanding subsea environments.

The actuators operate on 24 VDC with a maximum continuous current draw of 2.9 A. This standard DC voltage simplifies integration with typical ROV tether-supplied power systems and onboard subsea electronics, reducing the need for additional power conversion hardware.

Yes. NV Mechanics Design Ltd. provides product documentation, a quick start guide, an interface and integration manual, a Windows control application (DCBL_ABS_Control_Rot_9), and a sample assembly drawing — all available for download. This support package facilitates faster integration and commissioning for engineering teams.