Mounted on the drive shaft of the crane lifting motor, the speed and position pulse signals of the shaft are collected in real time and passed to the inverter/control cabinet for controlling the speed and precise positioning of the crane lifting; up to 12,000 revolutions, the shaft can carry large radial/axial loads, and the metal shell is IP66 waterproof and dustproof, which is suitable for heavy-duty and harsh work in steel mills and ports.situation.
Unique add-on: comes with overspeed switch (A suffix model)
pointsTwo kinds of mechanical and digital overspeed relays, is a key safety component.
2. Supporting purpose: crane overspeed protection (corresponding to TSG 51-2023 national standard)
Mandatory requirements of national lifting regulations：Frequency conversion crane lifting mechanism must be equipped with overspeed protection, To prevent the hook from falling out of control and the reel from speeding.
Electronic overspeed (digital switch): The encoder measures the speed in real time, the speed exceeds the set value, and the relay outputs an electrical signal to notify the inverter to stop and brake. The accuracy is high and the data recording is convenient.；
Mechanical overdrive (centrifugal): It does not rely on power supply, and has a purely mechanical centrifugal structure. If the power failure fails, the switch can still be triggered, the safety circuit of the crane can be cut off, and the brakes can be forced. It is the first choice for old metallurgical cranes.
3. Landing usage scenarios
Steel mill crane, port gantry crane, bridge craneMatching of new machines / renovation and installation of old equipment, Used to pass security checks in compliance with regulations to prevent safety accidents caused by speeding and falling objects in the lifting mechanism.
One sentence summary
Mounted on the shaft of the lifting motor，While the speed is fed back to the control system to achieve precise speed regulation, the brakes are automatically tripped while speeding to meet the statutory safety requirements of lifting equipment..
