Replacement HD40H8-2500-4-L-B Encoder for Elevator Door Drive System with 2500 Pulses Per Revolution Closed-Loop Control and Anti-Pinch Protection

Replacement Encoder HD40H8-2500-4-L-B For Elevator Door Drive System For Ouling Shenling Door Operato

Functions of HD40H8-2500-4-L-B Encoder
Speed DetectionDetects real-time rotation speed of door motor via 2500 pulses per revolution. Controls opening/closing speed curve smoothly.
Direction JudgmentIdentifies door opening or closing by phase difference between A and B pulse signals.
Position FeedbackProvides accurate door position (fully open / fully closed) for precise stopping control.
Door Width Auto-LearningRecords maximum door opening distance during commissioning for stable operation.
Anti-Pinch ProtectionDetects motor speed drop when obstacle is detected. Controls door to reopen automatically.
Closed-Loop ControlEnsures stable, quiet, accurate door movement without shock or overrun.
Fault MonitoringAlerts encoder error, speed abnormality, or position loss to protect door system.