Technical Specifications Model: IMHSS03 Analog Input: 4 differential channels for LVDT, strain gauge, 4‑20 mA signals Analog Output: 2 servo valve driving channels, ±10 V or 4‑20 mA output Digital Input: 4 channels 24 VDC for limit switch and enable interlock signals Digital Output: 4 relay output channels for status and alarm signal Back‑plane Power Supply: +5 VDC from rack back‑plane Control Loop Cycle: 250 μs high‑speed closed‑loop calculation Operating Temperature: 0 ℃ to +60 ℃ Storage Temperature: ‑40 ℃ to +85 ℃ Relative Humidity: 5‑95 %, non‑condensing Protection Class: IP20 Certifications: CE, UL
Functional Features High‑speed closed‑loop calculation for hydraulic servo position, velocity and force control. Multi‑channel differential analog input for LVDT displacement sensor and strain‑gauge feedback signal. Two‑channel high‑precision analog output for driving hydraulic proportional servo valves. Multi‑channel digital input for stroke limit and equipment enable interlock signal collection. Relay digital output for servo system ready status and fault alarm signal output. Front‑panel LED indicators display module power‑on, running and fault alarm condition. On‑board self‑diagnosis monitors feedback signal loss, output loop abnormality and internal hardware fault. Supports authorized hot‑swap under system maintenance workflow.
Application Scenarios Spare‑part replacement for IMHSS03 hydraulic servo module in Symphony DCS control rack. Hydraulic actuator closed‑loop control for turbine governor, large‑scale hydraulic executing mechanism. Precision motion control for metallurgical rolling equipment and heavy‑duty hydraulic process units.
Installation Requirements Insert IMHSS03 fully into designated MMU rack slot and fasten front locking screw. Connect LVDT sensor, servo valve, limit‑switch wiring to matched special servo terminal unit. Implement protective earthing strictly complying with DCS and hydraulic control cabinet grounding specification. Reserve sufficient ventilation clearance around module slot for heat dissipation. Ambient operating temperature shall maintain within 0 ℃ ~ +60 ℃ without condensation. Complete servo loop parameter tuning and closed‑loop function verification after hardware installation.
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