ABB Bailey IMHSS03 Hydraulic Servo Slave Module

Description

The ABB IMHSS03 is a high-performance hydraulic servo slave module developed for the Bailey INFI 90 and Symphony Plus control systems. This specialized controller interface is designed to manage closed-loop positioning for hydraulic actuators and servo valves, which are critical in steam turbine governing and complex industrial motion tasks. By accurately processing LVDT or RVDT position feedback and generating precise current outputs to drive servo coils, the IMHSS03 ensures high-speed responsiveness and deterministic control. Its modular architecture allows for seamless integration into standard INFI 90 racks, providing reliable operation in demanding power generation environments.

Specifications

• Brand: ABB Bailey

• Model Number: IMHSS03

• Product Series: INFI 90 / Symphony Plus

• Module Type: Hydraulic Servo Slave

• Feedback Inputs: Support for dual LVDT/RVDT sensors

• Output Current: Configurable servo valve drive signals

• Communication Interface: Slave Expander Bus

• Power Consumption: 7.5 Watts (Typical)

• Mounting: Single slot in Module Mounting Unit (MMU)

• Operating Temperature: 0 to 70 degrees Celsius

• Weight: 0.58 kg

Features

• Precision Motion Control: Executes high-resolution positioning algorithms to maintain tight control over hydraulic valve states.

• Dual-Channel Feedback: Accommodates redundant position sensors to ensure system availability and safety in the event of a sensor failure.

• Rapid Scan Rates: Optimized for low-latency processing, meeting the strict timing requirements of turbine speed and load control.

• On-Board Diagnostics: Continuously monitors servo loop health, including open-circuit detection and feedback signal validation.

• Galvanic Isolation: Protects internal system logic from electrical noise and potential surges generated by field-side hydraulic equipment.

• Flexible Calibration: Supports software-based zero and span adjustments, simplifying the commissioning of hydraulic actuators.