TOSHIBA TOSBERT S11 series frequency converter

2. Control circuit wiring

Analog input (AI1/AI2):

Terminal default function configurable function wiring requirements

AI1 0-10VDC (frequency command) 4-20mA (parameter P07.01) Load resistance ≤ 500 Ω, shielded twisted pair (0.5mm ²)

AI2 4-20mA (torque command) 0-10VDC (parameter P07.02) Same as AI1, cable length ≤ 20m

Switching input (DI1-DI6):

Default functions: DI1=forward rotation, DI2=reverse rotation, DI3=multi speed 1, DI4=multi speed 2, DI5=jog, DI6=reset.

Input method: leakage type (default)/source type optional (P06.01), 24Vdc ± 10%, current ≤ 8mA.

Communication interface:

Standard RS485 (terminals A/B), supports MODBUS-RTU, baud rate 9600-115200bps (P20.01).

Optional RS232 module (requires TX/RX/GND terminals) for direct communication with PC.

3. Wiring taboos

Do not connect compensation capacitors at the motor end (which may cause overvoltage tripping).

The distance between the control cable and the main circuit cable should be ≥ 15cm to avoid parallel wiring (reduce EMI interference).

After wiring the IP40 model, it is necessary to check whether the sealing ring is compacted to prevent dust/water vapor from entering.

Operation panel and core operations

1. Analysis of the operation panel

Panel layout (Figure 4-1):

Display: 2-line LCD screen (supports Chinese/English, parameter P00.02 switching), displaying frequency, current, and fault codes.

Buttons: RUN, STOP, MODE, △/▽ (parameter adjustment), ENTER (confirm).

Indicator lights: Power (PWR), Run (RUN), Fault (ALM).

Menu structure: First level menu (monitoring/parameters/faults) → Second level menu (parameter group P00-P29) → Third level menu (specific parameters).

2. Basic operation process (panel control)

Power on standby: Close the MCCB, the PWR light is on, the screen displays "0.0Hz", and there is no ALM alarm.

Frequency setting: Press MODE to select "Panel Control", press △/▽ to set the target frequency (such as 50Hz), and confirm with ENTER.

Start/Stop: Press RUN to start (RUN light on), press STOP to soft stop (deceleration time P03.02 defaults to 3 seconds).

Fault reset: When the ALM light is on, press STOP for 2 seconds to reset after troubleshooting.

3. External/Communication Control Operations

External control: P05.01=1 (external mode), DI1 is connected to the forward switch, AI1 is connected to the potentiometer, and the switch is closed to start.

Communication control: P05.01=2 (communication mode), PC sends instructions through MODBUS (such as writing frequency 0x0001=5000 → 50Hz).

Core functions and parameter configuration

1. Control mode and key parameters

Control mode parameters (P01.01) core parameters applicable scenarios

V/f control 0 P01.02 (V/f curve: 0=linear, 1=square) Fan/pump (variable torque)

Sensorless vector (SVC) 1 P01.04 (vector gain: 0.1-10.0), P04.01 (torque limit: 50-200%) machine tool/conveyor (constant torque)

2. Multi speed and brake control

16 speed operation: P08.01-P08.16 set the 16 speed frequency (0.0-400.0Hz), and select the combination of DI3-DI6 (such as DI3=ON → S1).

DC injection braking: P09.01=1 (enabled), P09.02=0-10Hz (starting frequency), P09.03=0-30% (voltage), suitable for positioning scenarios.

3. Energy saving function

Fan/pump energy-saving: P15.01=1 (enabled), P15.02=1 (square curve), energy-saving of 5-12%.

Automatic sleep: P15.05=1, P15.06=5.0Hz (sleep threshold), P15.07=10 seconds (delay), light load shutdown energy-saving.

Troubleshooting and Maintenance

1. Common fault codes and solutions

Fault code type, cause, and solution measures

OC1 acceleration overcurrent acceleration time short, motor short circuit, large load increase P03.01, motor insulation measurement, load reduction

OH1 module overheating fan fault, insufficient gap, environmental heat exchange fan (FS-6015), gap adjustment, cooling

OV1 bus overvoltage, high grid voltage, short deceleration, high regenerative energy measurement grid voltage, increased P03.02, connected to braking unit

GF grounding fault motor grounding, cable damage, grounding difference measurement motor insulation, cable replacement, rectification of grounding (≤ 10 Ω)

Err12 communication fault, cable breakage, baud rate mismatch. Check RS485 wiring and unify P20.01 parameters

2. Maintenance plan

Periodic project operation

Monthly visual inspection to ensure that the casing/terminals are free from damage or oxidation

Tighten the main circuit screws every 6 months with a torque of 2.5-4.0N · m

Clean the compressed air (0.2MPa) fan/heat sink every 6 months to dissipate heat

Measure the capacitance of the busbar every 2 years (attenuation ≤ 20%) through capacitance testing

Optional accessories and warranty

Optional accessories:

Accessory model and function

Input reactor ACL-S11-04 suppresses harmonics and increases power factor to 0.95

Braking resistor BR-S11-10 is compatible with 15kW models and can absorb regenerative energy

MOD-S11-RS232 communication module expands RS232 communication

External panel OP-S11-1M 1-meter cable, remote operation

Warranty terms:

Deadline: 12 months for the host and 3 months for the accessories.

Failure situation: unauthorized modification, overvoltage operation, natural disasters, etc.