The provided document describes the Control Unit KEH-P / Force-1.DIN, an essential component for operating SCHUNK electro-permanent magnetic chucks. This manual serves as a comprehensive guide for the safe and proper installation, commissioning, operation, and maintenance of the control unit, also offering assistance for troubleshooting.
Function Description
The Control Unit KEH-P / Force-1.DIN is specifically designed to manage the operation of SCHUNK electro-permanent magnetic chucks. Its primary function is to provide the necessary electrical pulses for magnetizing (clamping) and demagnetizing (releasing) workpieces on these chucks. The unit ensures precise control over the magnetic clamping system, which is crucial for secure workpiece handling during machining processes. The control unit facilitates the process reliability of production and helps achieve optimal machining results. It is designed to be installed within the electrical cabinet of machine tools, operating in dry indoor environments with controlled humidity and ambient temperatures. The unit's design incorporates safety features, including protection against short circuits and the need for proper grounding to prevent electric shocks and reduce interference.
Usage Features
The control unit is intended for use in conjunction with SCHUNK electro-permanent magnetic chucks. A key operational requirement is to maintain a minimum interval of 3 minutes between two ON/OFF cycles to prevent overheating of the magnetic chuck. The unit is designed for continuous operation in a 1-shift environment.
Initial commissioning involves several critical steps to ensure safe and correct functionality. Users must first verify that the magnetic chuck is not magnetized upon delivery, as slight remanent magnetization can occur due to handling. After applying voltage to the control unit, a workpiece is placed on the chuck, and a magnetization test is performed. It is crucial to confirm that the workpiece remains securely clamped. For demagnetization, a demagnetization cycle is initiated, and the user must ensure the workpiece is released from the chuck before removal.
The control unit is typically supplied with a remote control, particularly for the KEH-P series, which allows for power adjustment. This remote control features a MAG-LED, MAG-push button, LED KEY, KEY push button, DEMAG push button, and DEMAG-LED, providing intuitive control over the magnetization and demagnetization processes. External control signals can also be connected, and users should refer to the specific wiring diagram for proper connection.
Safety is paramount during operation. Users must be aware of the magnetic field generated by the unit, and certain individuals (e.g., those with pacemakers or metal prostheses) must maintain a safe distance. Personal protective equipment, such as gloves, safety shoes, and goggles, should be used. All electrical connections and maintenance work must be performed by qualified electricians, adhering to applicable laws and standards.
Maintenance Features
Maintenance of the Control Unit KEH-P / Force-1.DIN is crucial for ensuring its long-term safety, functionality, and performance. While the unit is designed for installation inside the electrical cabinet of a machine tool and does not require extensive specific maintenance, regular checks are recommended.
Monthly checks of the connection cables to the mains and to the magnetic chucks are advised to ensure their integrity. Additionally, the proper operation of the residual current device upstream of the control unit should be regularly verified according to the manufacturer's recommended intervals and methods.
Any maintenance, modifications, or adjustments should only be performed after removing the energy supplies and ensuring no residual energy remains in the system. Work should be carried out outside the danger zone, and the control unit must be secured against accidental operation.
In the event of defective electrical or electromechanical components, these must be replaced by SCHUNK Service personnel. Any component replacement by the operator will void the warranty. After maintenance, all protection devices must be reinstalled before reconnecting and restarting the control unit.
Troubleshooting guidance is provided for common issues, such as workpieces shifting due to improper clamping, residual current device disconnections, or the control unit remaining switched off. Corrective actions include checking electrical connections, adjusting magnetization power via the remote control, and installing a mains filter if interferences affect the control unit's functioning.
For any technical inquiries or spare parts requests, users are advised to contact the SCHUNK service department and always have the serial number of the control unit readily available. Proper storage of the unit, if not immediately installed, involves ensuring correct packaging, regular inspection for damage, and maintaining specified ambient temperature and humidity conditions. Disposal of the unit at the end of its lifecycle must be done in compliance with applicable regulations, with decommissioning and disassembly performed by qualified personnel using suitable tools.
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