Toshiba TE3 Soft Starter Installation, Operation, and Maintenance Complete Guide

4.3 Automatic Reset Function

TE3 supports automatic fault reset, and users can set the reset delay time, reset attempt times, and reset objects (such as overload, phase loss, communication timeout, etc.). This feature is particularly suitable for unmanned or remote monitoring scenarios.

5. Communication and Monitoring

5.1 Modbus RTU Integration

The device comes standard with RS-485 interface (RJ45) and supports Modbus RTU protocol, making it easy to connect to PLC or SCADA systems. Communication settings include station address (1-32), baud rate (9600-115200), and checksum.

The supported function codes include:

03: Read and hold register

06: Writing to a single register

16: Write multiple registers

5.2 Data Monitoring and Logging

TE3 monitors real-time parameters such as three-phase current, voltage, power, power factor, and radiator temperature, and records the peak current, temperature, and overload percentage of the last 10 starts/stops. The fault log can store the last 10 tripping events for easy fault tracing and analysis.

6. Fault diagnosis and maintenance

6.1 Common fault codes

101-117: Power side phase loss

201: Overheating of radiator

301-358: Thyristor triggering fault

601: Control voltage too low

1201/1202: Start/stop current limit timeout

1301/1302: Overload tripping

1701-1704: Communication failure

6.2 Maintenance Suggestions

Conduct a comprehensive inspection at least once a year, including wiring tightness, radiator cleanliness, and fan operation status.

In harsh environments, the frequency of inspections should be increased.

If the device emits smoke, odors, or abnormal sounds, the power should be immediately turned off.

It is strictly prohibited to connect power factor correction capacitors at the output end of the soft starter, otherwise it may cause equipment misoperation or damage.

7. Firmware upgrade and remote installation of touch screen

TE3 supports firmware upgrade via USB flash drive. The touch screen can be disassembled and remotely installed on the cabinet door, with two types of connecting cables of different lengths as standard to adapt to different installation distances.