The IMHSS03 Hydraulic Servo Module is a valve position control module used in an INFI 90 system to control the speed of a turbine. It interfaces a servo valve or an I/H converter to an IMMFP01, IMMFP02 or IMMFP03 Multi-Function Processor Module. The multi-function processor (MFP) module controls the position of a steam or gas turbine throttle valve by sending a position demand to the hydraulic servo (HSS) module. The HSS module drives its outputs to open or close the throttle valve to match the position demand.

The MFP module uses the IMFCS01 Frequency Counter Module to measure the turbine speed. The frequency counter module measures turbine speed by counting and timing pulses from a magnetic pickup on the turbine shaft. The MFP module uses this count to calculate turbine speed and calculate a new demand based on a set point.

The IMHSS03 module is a compatible replacement of the IMHSS01 or IMHSS02 module and offers improved performance. The IMHSS03 module automatically tunes its demodulator gain, offering a more optimal response.

This instruction provides information and instructions on IMHSS03 module installation, calibration and tuning, operation, maintenance and troubleshooting. Anyone installing, calibrating, tuning or operating the IMH

• Yaskawa Motor, Driver SG-
• Mitsubishi Motor HC-, HA-
• Westinghouse Modules 1C-, 5X-
• Emerson VE-, KJ-
• Honeywell TC-, TK-
• GE Modules IC -
• Fanuc motor A0-
• Yokogawa transmitter EJA-

• Honeywell Module DCS / PLC
• Emerson DeltaV Module / Servo Motor
• ABB Input Output Module
• AB Module / Touch Screen
• Rosemount Pressure and Temperature Transmitter
• Yokogawa Pressure Transmitter
• Yaskawa Servo Drive / Servo Motor
• Mitsubishi Servo Drive / Servo Motor
• GE IC69 Series PLC / Fanuc Servo Motor and Drive
• Modicon, SMC, SICK, NORGREN, Siemens etc.

Our in-house repair and testing facility, operated by qualified electronic, electrical, instrumentation and automation technicians and engineers, can repair a wide range of industrial products. All repairs also carry our 2-year warranty. Contact us for more details on our repair services.

We maintain stock in warehouses located in both the USA and Australia, providing flexible shipping options. Standard procedure ensures shipment of all items within one business day of receiving cleared payment.