TOSHIBA TOSBERT TM VF-nC1 Industrial Inverter

Wiring requirements: Connect the input (R/L1, S/L2, T/L3) to the power supply, and the output (U/T1, V/T2, W/T3) to the motor. Reverse connection is prohibited as it may damage the inverter;

Grounding terminal: It needs to be independently grounded with a wire diameter of ≥ 3.5mm ² (refer to section 10.1 wiring table).

Control circuit terminals:

Screw specifications: M2/M3, wire diameter 0.3-1.5mm ², sheath stripping length 5-6mm;

Wiring taboos: Control circuit and main circuit wiring should be separated (not parallel, not bundled, different conduit) to avoid interference.

4.3 Wiring precautions

It is prohibited to connect capacitive devices (such as noise filters and surge absorbers) on the output side, as this may cause a fire;

The length of the main circuit line is ≤ 30m, and if it exceeds this limit, the wire diameter needs to be increased (for example, for a 200V level 0.75kW motor, a wire length>30m requires a wire of ≥ 2.5mm ²);

When multiple inverters share a power supply, each one needs to be equipped with an independent MCCB (circuit breaker) to avoid the spread of faults.

Operation and monitoring

5.1 Operating Mode

Panel control: Set CMod=1, start with RUN key, stop with STOP key, adjust frequency with △/▽ key;

Terminal control: Set CMod to 0 and control operation by short circuiting the F-CC (forward rotation) and R-CC (reverse rotation) terminals;

Jog operation (JOG): Set the input terminal function to "JOG", the motor runs at a fixed frequency of 5Hz when short circuited, and stops freely after disconnection;

Preset speed operation: By allocating SS1-SS4 terminals (a total of 4 terminals), 15 levels of preset speed can be achieved (F287-F294 parameters need to be set).

5.2 Status Monitoring

Monitoring content: The output frequency, load current (%/A), input voltage (DC), output voltage (%/V), cumulative running time (0.01=1 hour), etc. can be viewed through the "status monitoring mode" (press MON button twice);

Fault display: When tripped, the LED displays a fault code (such as "OC1" indicating acceleration overcurrent), and the FL relay operates (fault output);

Alarm message: Non trip warning (such as "rEr" indicating retry), only prompts not to stop the machine, and attention should be paid to the equipment status.

Fault handling

6.1 Common tripping faults and remedies

Fault code, fault type, possible cause, remedial measures

OC1 acceleration overcurrent acceleration time is too short, motor impedance is too small, extending ACC time (such as changing from 10s to 20s), checking motor insulation

OP2 deceleration overvoltage deceleration time too short, excessive regenerative energy prolongs dEC time, F305 is enabled (overvoltage limited operation)

OH inverter overheating fan fault, poor ventilation, environment overheating. Replace the fan, clean the ventilation opening, and improve environmental heat dissipation

OL2 motor overload, excessive load, long low-speed operation time to reduce load, adjust electronic thermal protection level (OLn=4 compatible with VF motor)

6.2 Fault reset method

Panel reset: In the shutdown state, press the STOP button to display "LLr", then press the STOP button to reset (the fault needs to be eliminated first);

External reset: Short circuit the control terminal RST to CC and disconnect it (RST function needs to be assigned first);

Power off reset: Disconnect the input power supply, wait for 15 minutes, and then power it back on (used in emergency situations, not recommended for frequent operation).

Maintenance and Quality Assurance

7.1 Regular Maintenance Plan

Maintenance Type Cycle Maintenance Content Precautions

Daily inspection of environmental temperature, vibration and noise, load current, and alarm light status without stopping the machine. Visual and instrument checks are required

During the 3-6 month maintenance cycle, terminal tightening, dust removal (ventilation/circuit board), and capacitor inspection must be carried out by cutting off the power for 15 minutes and confirming that the voltage is ≤ 45V before operation

Long term storage: Power on for more than 5 hours every 2 years (motor disconnected), gradually increase the voltage with a transformer to restore capacitor performance, and avoid direct commercial power supply

7.2 Service life and replacement of vulnerable parts

Cooling fan: With a lifespan of approximately 30000 hours (2-3 years of continuous operation), it should be replaced in case of abnormal noise or stoppage;

Electrolytic capacitor: The lifespan of the smoothing capacitor in the main circuit is about 5 years (normal environment). Check for no leakage and ensure that the safety valve is not protruding. Otherwise, replace it;

Fuse: with a lifespan of about 10 years, regularly inspect the appearance, and replace it with the same specification (such as CC/J grade 8A) after melting.

7.3 Warranty Scope

Warranty period: 12 months from the delivery date, only covering the frequency converter host;

Free repair: Parts malfunctions that occur under normal use (such as fans and capacitors);

Disclaimer:

Improper use (such as overload, misconnected power supply);