Bonfiglioli SPL400 23F SynPlus Frequency Inverter
The Bonfiglioli SPL400 23F SynPlus Frequency Inverter is a drive unit intended for compatible industrial motor control applications. It is identified by the SPL400 23F model reference and is associated with an 11 kW rating and a three phase 380 to 480V supply range. The SynPlus series provides V/f control and sensorless vector control with an integrated EMC filter and braking transistor.
The SPL400 23F is part of the larger SPL400 three phase range, which covers 0.75 to 11 kW. It is used in medium sized applications where a balance of performance, reliability, and cost is required. The inverter should be integrated as part of a complete drive system with attention to the motor, cables, protection, control interface, and cabinet environment.
Drive Role and Control
The SPL400 23F provides adjustable output for compatible motor control. It supports V/f control and sensorless vector control, with a selectable CT/VT mode. The drive is rated for 150 percent overload for 60 seconds and has a switching frequency range of 2 to 16 kHz. Motor nameplate data should be entered accurately.
The drive receives commands from the machine control system and responds according to the configured logic. Start and stop behavior, speed references, and fault responses should be planned for the application.
Model Identification and Selection
The SPL400 23F reference and the 11 kW rating should be checked against the project documentation. The supply range is three phase 380 to 480V with a tolerance of +10 to -15 percent. The user should confirm that the supply and motor are compatible with the drive.
Selection should consider load profile, duty cycle, ambient conditions, and cabinet space. The drive must be applied within its specified ratings.
Cabinet Installation
The inverter should be mounted in a cabinet that provides mechanical support and environmental protection. The enclosure rating for the SPL400 series is IP20, so the cabinet is essential for protection. Airflow should not be blocked, and clearance should allow heat dissipation and access to terminals.
Labels should identify the drive and its main connections. The layout should allow safe measurement and maintenance.
Power Wiring and Protection
Power wiring should be performed by qualified personnel following the site electrical code. Supply, motor, and protective earth connections must be correct and secure. Cable sizes should be selected for current and voltage drop. Motor cables should be shielded where required by the EMC plan.
The drive includes an integrated braking transistor and DC link connection. Protective devices should be coordinated with the drive and motor.
Control Wiring and Parameters
Control wiring should follow the connection diagram. The SynPlus series includes six digital inputs, one multifunction input, one multifunction output, and two relay outputs. Parameter setup should include motor data, frequency limits, acceleration and deceleration times, and input and output functions.
Parameters should be changed in a controlled manner and recorded. The drive should be tested at low speed and light load before normal operation.
EMC and Grounding
The SynPlus series includes an integrated EMC filter class A. Good EMC practice still requires separation of power and signal cables, proper shield termination, and low impedance grounding.
If interference occurs, the user should inspect cable routing and grounding first.
Commissioning
Commissioning should begin with a visual inspection and safety check. The motor should be tested at low speed and light load. The user should observe current, speed stability, and noise. Protective functions should be tested before normal operation.
Commissioning records should include the drive model, motor data, parameter changes, and test results.
Diagnostics and Maintenance
Diagnostics should consider supply quality, motor condition, load, wiring, and parameters. Fault records should be saved before changes are made.
Routine maintenance should include checking cooling, terminals, and cabinet ventilation. The drive should be isolated and allowed to discharge before work.
Application Value
The SPL400 23F supports adjustable speed control in compatible industrial machinery with an 11 kW rating and sensorless vector control. It can help match motor output to process demand and reduce mechanical stress during starting and stopping.
Summary
The Bonfiglioli SPL400 23F SynPlus Frequency Inverter is intended for compatible industrial motor control. Correct selection, cabinet installation, wiring, EMC practice, parameter configuration, and maintenance are essential.
