Technical Specifications Valve position feedback input, actuator driving output, host communication interface, 24 V DC auxiliary power supply. Operating temperature ‑20 ℃ to +70 ℃, storage temperature ‑40 ℃ to +85 ℃. Supports closed‑loop position regulating algorithm.
Functional Features Receives remote position set‑point command from upper‑level control system. Collects real‑time valve position feedback signal. Executes closed‑loop control algorithm and outputs driving signal to valve actuator. Detects actuator travel over‑range and driving circuit fault. Supports local parameter configuration and status diagnosis.
Application Scenarios Spare intelligent position control component for industrial regulating valve. Widely used for flow, pressure and liquid level adjustment loop in process industry.
Performance Parameters Accurate valve closed‑loop positioning performance. Fast response for position adjustment. Reliable actuator fault detection capability.
Material Composition Flame‑retardant plastic module housing. Multilayer glass‑fiber epoxy printed circuit board. Position sampling circuit, driving output circuit, micro‑processor processing assemblies. Wiring terminals for power, feedback and driving signal.
Structural Characteristics Compact module structure suitable for actuator cabinet installation. Multiple groups of screw‑type wiring terminals on front side for power, feedback and actuator connection. Internal circuit separates low‑voltage control part and power driving part.
Working Principle TVOC‑2‑240 is powered by external 24 V DC auxiliary power. It receives position set‑point command from host system, compares set‑point value with actual valve position feedback value. Internal control algorithm calculates driving output signal to adjust valve actuator until actual position matches target set‑point.
Installation Requirements Disconnect 24 V DC auxiliary power supply before replacement. Fix module inside actuator cabinet. Connect auxiliary power, valve position feedback wiring and actuator driving wiring to corresponding terminals. Power on module, complete valve stroke calibration and parameter setting. Test full‑range valve positioning performance.
Usage Notes Actuator driving load must match module output specification. Stroke calibration shall be completed after hardware replacement. Hot‑wiring under powered condition is prohibited.
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