Modernization of the WHB150 Defum boring machine

control system modernization: WHB-150 Defum boring and milling machine

the modernization process of the WHB-150 Defum boring and milling machine involved the implementation of a new control unit equipped with complete distribution, control, and protection switchgear. the system was upgraded with a modern feed drive unit and an ergonomic operator interface integrated into the control panel.

technical specifications and components:

• ✓ enclosure system: free-standing control cabinet with a base, equipped with an active thermal management system (forced ventilation, resistance heating) and internal lighting.
• ✓ spindle drive system: frequency inverter Control Techniques Commander C300-074-00660.
• ✓ feed drive system: servo drive Control Techniques Unidrive M700-074-00770 operating in a switchable mode for all machine axes.
• ✓ axial drive unit: Unimotor 250 synchronous AC servo motor with permanent magnets, 11kW power, 77Nm torque, 60A rated current, including dedicated signal and power cabling.
• ✓ control logic: safety controller Siemens SIMATIC S7-1200F with binary I/O modules.
• ✓ HMI interface: 7" touch panel integrated into a new control panel front plate, equipped with control gear (potentiometers, emergency stop buttons, signal lamps).
• ✓ measurement system: linear scales installed on X, Y, Z, and W axes to provide high-precision feedback.
• ✓ auxiliary equipment: 400A main disconnector, line contactors, 24VDC switch-mode power supplies, isolation transformers, and terminal block systems.

engineering scope:

• ✓ detailed engineering design developed in EPLAN Electric.
• ✓ control system assembly and on-site machine installation.
• ✓ development of PLC control algorithms and HMI visualization.
• ✓ drive parameterization, technical commissioning, and production process validation.