Key Technology 621203 REOVIB MFS268XXLH Vibratory Feeder Controller
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Product Information
The Key Technology 621203 REOVIB MFS268XXLH (REO AG part number 621203) is a variable frequency controller in the REOVIB MFS 268 series, engineered for precise speed and amplitude regulation of electromagnetic vibratory feeder drives. Designed to operate on an AC mains supply voltage between 110 V AC and 230 V AC (-15% / +10%), this drive delivers a fully regulated output voltage up to 205 V AC with a 6 A continuous output current rating across an output frequency range of 5 to 300 Hz. Encased in a rugged IP54-rated dust- and splash-proof housing, the controller utilizes automatic resonance frequency regulation to continuously track mechanical feeder load changes, maintaining uniform feed velocity in bowl feeders and linear convey tracks without manual frequency adjustment.
For integration into automated production equipment, the REOVIB MFS 268 XX LH accepts analog setpoint inputs of 0–10 V DC or 0–20 mA for remote feed speed adjustment, alongside built-in digital inputs supporting PNP and NPN photoelectric track sensors for track queue control. Output connections serve 110 V AC to 230 V AC electromagnetic drive coils, while potential-free relay outputs provide system status and alarm feedback to a master PLC. Putting a spare unit into service requires parameter entry for current limits, frequency boundaries, and sensor logic modes using the front-mounted 4-digit LED display and menu keypad. Operating parameters are retained in non-volatile internal EEPROM memory, and support from ABC Industrial Parts can assist maintenance personnel in verifying parameters and sourcing verified replacement hardware.
System diagnostic feedback is displayed directly on the front panel via a 4-digit LED readout alongside four status indicators labeled STATUS / POWER, ENABLE / RUN, SENSOR, and FAULT. Active operational trip conditions generate error codes ranging from Er0 for mains undervoltage to Er6 for EEPROM memory faults. Initial troubleshooting steps involve confirming incoming line voltage, checking drive coil resistance and cable integrity for short circuits, and verifying track sensor alignment and logic configuration. If an Er6 internal memory corruption or persistent hardware fault occurs, parameter resets may not clear the fault state; in these cases, hardware repair or sourcing a fully tested exchange controller from ABC Industrial Parts offers a direct route to restoring equipment operation.
Technical Specifications
| Manufacturer | Key Technology / REO AG |
| Part Number | 621203 |
| Model / Type | REOVIB MFS268XXLH |
| Product Family | REOVIB |
| Series | REOVIB MFS 268 |
| Component Type | Vibratory Feeder Controller |
| Minimum Supply Voltage | 110 V AC |
| Maximum Supply Voltage | 230 V AC |
| Regulated Output Voltage | 205 V AC |
| Output Frequency Range | 5 to 300 Hz |
| Continuous Output Current | 6 A |
| Ingress Protection Rating | IP54 |
| Analog Setpoint Inputs | 0-10 V DC / 0-20 mA |
| Track Sensor Compatibility | PNP and NPN Photoelectric |
| Status/Fault Outputs | Potential-free Relay Contacts |
| Display & Interface | 4-digit LED Readout & Keypad |
| Parameter Memory | Non-volatile EEPROM |
Programming and Configuration
Parameter configuration on the REOVIB MFS 268 XX LH is performed using the integrated front panel keypad and 4-digit LED display. Configurable parameters include output frequency boundaries within the 5 to 300 Hz operating range, maximum continuous output current limits up to 6 A, automatic resonance tuning parameters, and digital input logic modes for PNP or NPN track sensors.
All configured parameters are stored in non-volatile internal EEPROM memory, ensuring full data retention through power interruptions and long-term shutdowns. If parameter corruption occurs or initial commissioning values need to be cleared, operators can execute a factory parameter reset via the front panel keypad menu prior to re-entering application parameters.
Communication and System Integration
The REOVIB MFS268XXLH supports remote amplitude setpoint integration via standard 0–10 V DC voltage or 0–20 mA current analog inputs, enabling higher-level automation systems to adjust feeder speed dynamically during production.
Integrated digital inputs allow direct connection of PNP or NPN photoelectric track sensors for automated bowl or linear track queue management. Operating states and fault warnings are transferred to higher-level PLCs through potential-free relay output contacts.
Diagnostics and Status Indication
Diagnostics on the REOVIB MFS268XXLH rely on a combination of four status LEDs, a 4-digit LED readout for numeric fault codes, and a potential-free fault relay contact to alert an external master PLC.
The controller continuously monitors supply voltage levels, output current, heatsink temperature, mains frequency stability, sensor signal inputs, and internal memory integrity to prevent equipment damage during abnormal operating conditions.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| STATUS / POWER | Indicates power supply and operational readiness | |
| ENABLE / RUN | Indicates drive output enabled and active operation | |
| SENSOR | Indicates track sensor level signal status | |
| FAULT | Indicates active system error or trip condition |
Replacement and Spare Part Considerations
Before replacing a Key Technology / REO AG 621203 controller, verify that the replacement match matches the 110 V AC to 230 V AC supply voltage and 6 A continuous output current rating required by the installed electromagnetic drive coils.
Because operating parameters are stored locally in non-volatile EEPROM memory, parameters from the existing controller should be recorded and manually re-entered into the spare unit via the keypad menu. Particular care must be taken when matching track sensor logic settings (PNP vs NPN) and current limits to prevent unexpected track stops or coil overheating.
Error Codes & Fault Codes
The following error codes may be displayed during operation or diagnostics:
| Code | Name | Description | Possible Cause | Recommended Action |
|---|---|---|---|---|
| Er0 | Undervoltage | Supply voltage dropped below permissible operating threshold. | Mains supply drop, power dip, or blown internal fuse. | Check main incoming power supply voltage and wiring connections. |
| Er1 | Overvoltage | DC bus / supply voltage exceeded maximum operating limit. | High line voltage spike or regenerative energy from inductive drive coil. | Check line voltage; verify feeder coil specifications and damping settings. |
| Er2 | Overcurrent / Short Circuit | Output current limit exceeded or short circuit detected on feeder output terminals. | Coil short circuit, defective cable, or current parameter set too low for load. | Inspect drive coil resistance and cable for short circuit; verify max current setting. |
| Er3 | Overtemperature | Heatsink temperature exceeded internal thermal threshold. | Inadequate cooling, fan failure, high ambient temperature, or continuous overload operation. | Clean heatsink, check ambient enclosure temperature, verify output current against controller rating. |
| Er4 | Mains Frequency Error | Line frequency synchronization lost or out of range. | Unstable AC mains frequency or heavy supply distortion. | Check mains power stability and generator filtering if applicable. |
| Er5 | Sensor Error | Track sensor timeout or invalid signal state detected. | Track blocked, disconnected sensor, or incorrect sensor logic setting (PNP/NPN). | Check track sensor wiring, clean sensor optics/lens, verify sensor parameter setting. |
| Er6 | EEPROM Memory Error | Internal non-volatile parameter memory fault. | Internal memory corruption or hardware board component failure. | Perform factory parameter reset. If fault persists, internal hardware error — return unit for repair or replace unit. |
Frequently Asked Questions
How does automatic resonance frequency regulation function on the REOVIB MFS268XXLH?
The controller continuously tracks the mechanical resonant frequency of connected bowl feeders or linear tracks within a 5 to 300 Hz range. It automatically adjusts the output frequency to match load variations, keeping feed velocity constant as product mass changes.
What power input and coil output specifications does the 621203 feeder controller support?
The unit operates on a supply voltage range of 110 V AC to 230 V AC (-15% / +10%) and delivers a regulated AC output voltage up to 205 V AC with a maximum continuous output current of 6 A.
Which track sensors are compatible with this controller?
The controller features direct digital inputs supporting both PNP and NPN photoelectric track sensors for material queue monitoring and feeder state control.
What steps should be taken if fault code Er6 is displayed?
Fault code Er6 signals an internal EEPROM memory error. You can attempt a factory parameter reset via the keypad menu. If the fault does not clear, an internal board component failure has occurred requiring unit repair or replacement.
Can feeder speed be controlled remotely by an external PLC?
Yes, remote speed and amplitude adjustments can be signaled to the controller using standard 0–10 V DC or 0–20 mA analog setpoint inputs.
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Disclaimer:
We are not an authorised distributor of Key Technology.
Product photos are for illustration purposes only and may differ from the actual product delivered.
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