TOSHIBA TE2 series low-voltage digital solid-state soft starter

Applicable scenarios for the principle of startup mode

Voltage ramp (VR) output voltage increases linearly from the initial value (0-100%) to the rated voltage within a set time (1-120 seconds), and the current automatically adjusts with the load for light/medium loads, such as centrifugal fans, small water pumps, and conveyor belts (with stable load resistance)

The output current of the current ramp (CR) increases linearly from the initial value (0-600% FLA) to the current limit value (200-600% FLA) according to the set time. The voltage is adaptively adjusted for heavy/high static friction loads, such as crushers, presses, and deep well water (to break through static friction and avoid sudden current rise during startup)

Dual slope switching is achieved through external contacts (TB1-6/7) to switch between two slope modes (such as VR+CR) in scenarios with large load fluctuations, such as conveyor belts with empty/full load switching (slope 1 for empty load, slope 2 for full load)

Output short-term high voltage (10-100%, 0.1-2 seconds) before Kick Start, breaking through high static friction freezing pumps and stuck mechanical transmission systems (requiring instant high torque)

Parameter configuration steps for voltage ramp (VR) startup:

Enter programming mode: Press the Fn key on the status display (default A-phase current) to enter the F001 interface;

Set slope type: Press the 【 ←/→ 】 key to switch to F010, set it to "1" (Ramp1=VR, Ramp2=VR) or "3" (Ramp1=VR, Ramp2=CR), press 【 ENT 】 to save;

Configure Ramp1 parameters (enabled by default):

F011 (initial voltage): set to 10-30% (e.g. 20%, ensure that the motor can start without impact);

F013 (acceleration time): set to 5-20 seconds (such as 10 seconds, adjusted according to the load, the water pump can be set short, and the conveyor belt can be set long);

F014 (current limit): Set to 300-400% FLA (e.g. 350% to avoid grid overload);

(Optional) Configure Ramp2 parameters: If dual ramp is required, set F015 (Ramp2 initial voltage), F017 (Ramp2 acceleration time), F018 (Ramp2 current limit);

Exit programming mode: Press the Fn key to return to the status display and start the motor to verify the slope effect.

Question 2: What motor protection functions are built into the TE2 series soft starter? How to configure thermal overload protection to match motor characteristics? How to troubleshoot when reporting an "oLA" (overload during startup) fault?

Answer:

Built in motor protection function:

Key parameters for specific functions of protection categories

Thermal overload protection simulates the thermal characteristics of the motor (I ² t curve) to prevent motor overheating. F003 (starting overload level), F004 (running overload level), F005 (reset mode)

Phase protection phase loss (current<12% CT value), phase imbalance (5-30%), phase rotation (ABC/ACB) F100 (phase loss delay at stop), F101 (phase loss delay during operation), F098 (phase rotation)

Voltage protection overvoltage (1-10% rated voltage), undervoltage (1-20%, divided into start-up/operation), voltage imbalance (1-30%) F032 (overvoltage threshold), F034 (start-up undervoltage), F036 (operating undervoltage), F030 (voltage imbalance)

Current protection overcurrent (100-300% FLA, electronic shear pin), undercurrent (10-90% FLA, load loss), ground fault (5-90% CT value) F042 (overcurrent threshold), F044 (undercurrent threshold), F046 (ground fault threshold)

Mechanical protection start interval lock (1-60 minutes), hourly start times (1-10 times), reverse lock (1-60 minutes) F050 (start interval), F049 (hourly start times), F048 (reverse lock)

Steps for configuring thermal overload protection:

Determine motor parameters: Obtain FLA (rated current) and NEMA overload level (such as Class 15) from the motor nameplate;

Configure basic parameters:

F001 (motor FLA): Set as the motor nameplate FLA (such as 10A), it must be accurate, otherwise the protection will fail;

F002 (Service Factor SF): Set according to the motor nameplate (such as 1.15), if SF ↑, F001 can be set with an upper limit ↓;

Configure overload level:

F003 (Starting Overload Level): Set as the overload level when the motor starts (such as Class 20, higher than the operating level to avoid starting false alarms);

F004 (Operational Overload Level): Set as the overload level during motor operation (such as Class 15, matched with motor thermal tolerance);

Configuration reset method: Set F005 to "0" (manual reset, press the reset button) or "1" (automatic reset, 1-10 attempts, caution required for 2-wire control).

Troubleshooting steps for "oLA" (overload during startup):

Confirm load status: Check if the motor is stuck, if the load is too heavy (such as if the conveyor belt is stuck or there are foreign objects in the pump), and eliminate mechanical faults;

Check parameter configuration:

Check if F001 (FLA) is lower than the actual FLA of the motor (e.g. motor FLA=15A, F001=10A, protection threshold too low), and it needs to be corrected to 15A;

Check F003 (startup overload level): whether it is too small (such as Class 5, which causes false alarms due to short startup time), it can be increased to Class 15-20;