SIEB & MEYER FC80 Frequency Converter

Module Feature

SIEB & MEYER FC80 is a rack plug-in high-frequency spindle frequency converter. Designed to drive high-speed asynchronous spindle motors. It supports high output frequency for ultra-high spindle rotation speed, with stable speed regulation and low torque ripple. Built-in multi-level current, voltage and temperature monitoring protection. Compact rack plug-in construction, good EMC performance. Widely applied in PCB routing, CNC milling, semiconductor processing equipment. This series is an older legacy product.

Working principle

AC mains input is rectified into DC bus inside the module. The power IGBT converts DC bus into adjustable amplitude and high-frequency three-phase AC output to drive spindle motor. It continuously samples motor speed signal to realize closed-loop speed control. When overcurrent, overvoltage or overtemperature fault occurs, the drive immediately cuts off output and transmits fault signal to the rack control system.

Onboard components

IGBT power stack, DC-link capacitor bank, current sampling circuit, speed feedback interface, control processor, temperature sensor, power terminal block, gold finger backplane connector, LED status indicator array.

LED indicators

Front panel LED indicators for power ready, drive enable, operating status and fault code display.

Hardware self-diagnosis

Visual inspection of module housing, terminals and backplane gold fingers; measure DC bus voltage; check motor cable insulation and continuity; read LED fault codes; inspect cooling fan and heat sink for dust accumulation.

Programming software

SIEB & MEYER commissioning software for spindle parameter configuration, speed auto-tuning and fault log reading.

Electrical & Process Parameters

Model: FC80 Device type: High frequency spindle frequency converter Input: 3-phase AC mains Output: High frequency 3-phase AC for high-speed spindle motor Control mode: Closed loop speed control Cooling: Forced air cooling Protection: Overvoltage, undervoltage, overcurrent, short circuit, overtemperature protection Mounting: Rack plug-in mounting

Mechanical & Structure

Mounting: Rack plug-in mounting Protection class: IP20 (inside control cabinet)

Environmental

Operating temperature: 0℃ ~ +50℃ Ambient humidity: 5~95% non-condensing Certification: CE compliant Status: SIEB & MEYER legacy high-speed spindle frequency converter

System compatibility

Compatible with SIEB & MEYER rack power supply and spindle motors, forms complete high-speed spindle drive system for CNC and semiconductor processing equipment.

Function

FC80 frequency converter manufactured by SIEB & MEYER. It outputs high-frequency AC power to drive high-speed spindle motor and maintains precise spindle speed. Motor overload, cable short-circuit, fan failure or capacitor aging will trigger protection and disable output. It is the spindle power drive unit for SIEB & MEYER old rack CNC system.

Installation

Follow lockout/tagout safety procedure before installation. Cut off all rack power completely. Insert module into designated rack slot and lock handle securely, confirm stable backplane contact. Wire spindle power cable and speed feedback cable. Set spindle parameters and perform tuning via SIEB & MEYER commissioning software, test spindle rotation before formal operation.

Interface

3-phase AC input terminal, spindle motor power output terminal, speed feedback connector, backplane bus connector, fault signal output terminal of FC80.

Diagnostic

No power LED: Missing AC input, blown fuse or input wiring failure. Drive not ready: Pre-charge fault, damaged capacitor or backplane communication error. Overcurrent alarm: Spindle motor winding short, cable damage or mechanical jam. Overheat alarm: Fan failure, clogged heat sink or high ambient temperature. Speed deviation fault: Damaged speed sensor or wrong parameter setting.

Product Brief

FC80 SIEB & MEYER rack plug-in high speed spindle frequency converter,high frequency output,for driving high-speed asynchronous spindle motors,used for CNC and semiconductor routing and drilling equipment.