TOSVERT VF-AS3 series 600V industrial frequency converter

Power and motor wiring:

Power requirement: The allowable fluctuation range of input voltage is+10% to -15% of the rated voltage (+10% during full load continuous operation). Copper wires that meet the specifications must be used.

Grounding: It is necessary to use wires with sufficient cross-sectional area and not less than the specifications of the power cord to reliably connect the grounding terminal of the frequency converter to a dedicated grounding electrode. This is a key measure to prevent electric shock and fire.

Wiring technique: The input power line, output motor line, and control line should be laid separately to avoid parallel bundling and reduce electromagnetic interference. Suggest using shielded cables and grounding the shielding layer properly. It is recommended to use crimping terminals with insulated sleeves for power terminals and tighten them according to the torque specified in the manual.

Peripheral devices: Suitable fuses, circuit breakers, or leakage protectors must be installed at the power input end to achieve short-circuit and ground fault protection. The contactor coil needs to be equipped with a surge absorber.

Parameter setting and core function configuration

The VF-AS3 series frequency converter provides extremely rich parameters to achieve precise control.

Initial and multiple rating settings: Region selection is required for the first power on. The most crucial thing is to set the parameter<AUL>(multiple rated value selection) based on the actual motor voltage and load type used. For example, for a 600V (575V) system,<AUL>=2 is a normal load, and<AUL>=3 is a heavy load. Incorrect settings may cause the motor to overheat or malfunction.

Basic operating parameters: including operation command source (<CMOD>), frequency command source (<FMD>), maximum frequency (<FH>), upper and lower limit frequencies (<UL>/<LL>), acceleration/deceleration time (<ACC>/<dEC>), etc. These parameters determine the basic operating characteristics of the frequency converter.

Motor parameters and protection: It is necessary to correctly set the rated power, current, voltage, number of poles, and other parameters of the motor in order to enable accurate vector control or V/F control of the frequency converter. Electronic thermal protection functions (such as F601) can provide overload protection based on motor characteristics. For multi motor or special small capacity motor drives, external heating relays are required.

Carrier frequency and braking settings: The carrier frequency (<F300>) affects the quality of the output waveform, motor noise, and frequency converter temperature rise, and can be adjusted within the specified range. When using external braking resistors, corresponding braking parameters (<F304>,<F308>,<F309>) need to be set.

Advanced features: Supports PID closed-loop control, multi-stage operation, jump frequency, S-curve acceleration and deceleration, instantaneous stop and restart, load shedding control, etc. Users can flexibly implement various logical controls by assigning digital input/output terminals.

Compliance certification and electromagnetic compatibility

This series of products has taken into account the compliance requirements of major global markets in their design.

CE Mark and Directive: The product itself complies with the Low Voltage Directive and EMC Directive. The built-in EMC filter can meet the radiation and conducted emission requirements of IEC61800-3 Category C3 (EN55011 Class A Group 2) when the motor cable length does not exceed 25 meters (depending on the model and carrier frequency). To ensure that the final equipment meets the EMC directive, the manual recommends multiple measures, such as using shielded wires, installing the frequency converter in a metal cabinet, separating wiring, and installing magnetic rings on the grounding wire.

UL/CSA standard: The product has passed UL/CSA certification and has corresponding markings on the nameplate. To comply with UL61800-5-1, the original warning label on the front cover must be retained during installation, and UL certified wires and fuses must be used. The manual provides a detailed list of short-circuit current ratings, recommended fuse models, and wire specifications. When the installation altitude is above 1000 meters, the output current needs to be reduced by 1% per 100 meters.

Safety function: Supports the "safety torque shutdown" function that complies with IEC 61800-5-2, and can achieve higher safety level motor stop control through dedicated terminals.

Maintenance, upkeep, and lifecycle

Regular inspection: It is necessary to regularly check whether the fastening terminals are loose, clean the dust on the heat dissipation fins and ventilation openings, and check whether the cooling fan is running normally.

Cooling fan lifespan: The manual clearly states that the design lifespan of cooling fans used to cool heating components is approximately 8 years (VFAS3-6022PC to 6750PC). After reaching the end of its lifespan, it should be replaced promptly to prevent equipment overheating and damage due to poor heat dissipation.