Description
Note: Many products are not yet listed. Please contact us for more product information. Our supply channels are constantly expanding, and we currently have 20 stable shared supply channels. Please confirm the model, product, price, and all other necessary information with customer service before placing an order. We offer new, refurbished, and used products, and prices are adjusted according to the year of the item you require.
Key Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | IMHSS03 |
| Platform | ABB Bailey INFI 90 DCS |
| Power Supply | 24 VDC |
| Operating Temperature | 0°C to 55°C |
| Communication Bus | INFI 90 Bus |
| Feedback Type | AC / DC LVDT interface, redundant |
| Servo Output | Dual redundant servo valve current drive |
| Termination Unit | NTHS03 (required) |
| Onboard Function | Automatic demodulator gain tuning |
| Mounting | INFI90 rack slot mount |
| Signal I/O | 4 analog inputs, 9 analog outputs, 3 digital inputs, 1 digital output |
Product Introduction
ABB Bailey IMHSS03 is a hydraulic servo module built for the INFI 90 distributed control system. It receives position setpoints from MFP processor modules and outputs regulated current to hydraulic servo valves for actuator positioning.
This module integrates LVDT signal conditioning to close the position control loop. Dual servo outputs support active/standby redundancy, reducing trip risk on critical turbine and boiler control loops.
IMHSS03
IMHSS03
IMHSS03
IMHSS03
Application Scenarios & Field Experience
Part 1 (Narrative Paragraph)
Power generation plants running legacy INFI90 systems face forced outages when hydraulic servo control hardware fails. Original OEM lead times can stretch for weeks. A direct swap with IMHSS03 preserves the existing control logic and wiring without major system reconfiguration.
Part 2 (Numbered List)
- Thermal Power Plant: Steam turbine governor control, regulating main steam inlet valve position.
- Combined Cycle Facility: Gas turbine fuel valve actuation, closed-loop position control with LVDT feedback.
- Industrial Boiler: Damper and hydraulic actuator control for combustion airflow regulation.
- Power Plant Retrofit: INFI90 system maintenance, replacement of aged servo control cards during planned outages.
Part 3 (Short Field Story)
A coal-fired power unit had intermittent valve hunting traced to a degraded IMHSS03. The site could not wait for OEM backorder. Our tested IMHSS03 arrived before the scheduled outage window. Technicians swapped the module, reconfigured jumpers, and completed loop calibration within four hours. The turbine returned to stable operation with no further position drift.
Standard Operating Procedure (SOP) for Quality Control
- Visual & Origin Inspection: Verify OEM labeling, board condition, connector integrity, and anti-counterfeit marker checks.
- Live Rig Testing: Bench power-on test, INFI90 bus communication check, servo output drive and LVDT feedback simulation.
- Firmware Verification: Read and log firmware revision; confirm revision matches the target system’s documented requirements.
- Jumper & Continuity Check: Validate onboard jumper settings and continuity for all signal paths to the NTHS03 termination unit.
- ESD-Safe Packaging: Handle in ESD controlled workstation, install anti-static shielding, pack in rigid enclosure for transit.
Frequently Asked Questions (FAQ)
Q1: Is ABB Bailey IMHSS03 compatible with older INFI90 MFP processor revisions? A: It works with most IM MFP multi-function processor modules. Verify firmware revision on both the MFP and before installation. Some older MFP builds require configuration database updates.
Q2: What warranty is included with this ABB Bailey module? A: We provide a 12-month limited warranty. Warranty covers electronic functional defects. It excludes damage from ESD exposure, overvoltage, incorrect wiring, or improper hydraulic loop tuning.
Q3: How quickly can this ABB Bailey unit ship after order confirmation? A: Stock is available for immediate shipment. Final transit timeline depends on destination and industrial procurement portal clearance. Confirm delivery deadlines when locking the order.
Q4: What risks come with firmware mismatch after installing ? A: Mismatched firmware can trigger bus faults, incorrect LVDT demodulation, or unstable servo valve drive. Load the validated firmware revision for your turbine control application before enabling hydraulic pressure.
Q5: Are there critical installation pitfalls for ? A: Do not hot-swap the module while the turbine control loop remains active. This can cause sudden valve movement and unit trip. Always lock out hydraulic pressure and place the loop in manual before card removal.
