Technical Specifications

FAQ

1. What is the rated output current of 20BC105GJANNANC0?
The rated continuous output current of 20BC105GJANNANC0 is 105 A. The drive also provides short-term overload capability of approximately 116 A for 1 minute and 158 A for 3 seconds. This current rating makes the drive suitable for medium- to high-power three-phase AC motor applications. When selecting the drive, the motor nameplate current should be compared directly with the drive rating. Motor power, starting torque, load inertia, acceleration requirements, and operating cycle should also be considered to ensure sufficient capacity under actual operating conditions.

2. What input power supply is required for 20BC105GJANNANC0?
20BC105GJANNANC0 uses a three-phase AC power supply with a nominal input voltage of 400 VAC and an applicable voltage range of 380–480 VAC. The typical input frequency is 50 Hz. Before installation, the incoming power supply should be checked for correct voltage, phase balance, and adequate capacity. Proper circuit protection, grounding, and appropriately sized power cables should also be provided. Stable input power is important for preventing abnormal conditions such as undervoltage, overvoltage, or input-phase-related faults during operation.

3. What does the IP54 / Type 12 enclosure provide?
The IP54 / Type 12 enclosure provides increased protection against dust and water splashing compared with an open or IP20 configuration. This makes the drive more suitable for industrial installation environments where equipment may be exposed to airborne particles or limited moisture. However, IP54 does not mean that the drive can be exposed to continuous water spray, immersion, condensation, or highly corrosive atmospheres. Proper ventilation, ambient temperature control, clearance, and environmental conditions should still be considered during installation to maintain reliable operation.

4. Does 20BC105GJANNANC0 include a braking IGBT or internal brake resistor?
This configuration does not include a braking IGBT and does not have an internal braking resistor. During rapid deceleration of a high-inertia load, regenerative energy can be returned from the motor to the drive DC bus, causing the DC bus voltage to increase. If the application requires frequent rapid stopping or significant regenerative braking, the braking requirements should be evaluated during system design. An appropriate external braking solution may be required depending on load inertia, deceleration time, braking frequency, and regenerative power.

5. How should an overcurrent fault on 20BC105GJANNANC0 be diagnosed?
An overcurrent fault should be investigated systematically. First inspect the motor output cables for phase-to-phase shorts, ground faults, damaged insulation, or incorrect connections. The motor itself should then be checked for electrical abnormalities. The mechanical system should also be inspected for seized components, bearing problems, excessive friction, or sudden increases in load torque. If the fault occurs mainly during acceleration, check whether the acceleration time is too short. Finally, verify that the motor voltage, current, frequency, and speed parameters stored in the drive match the actual motor nameplate data.

6. Why can a DC bus overvoltage fault occur during motor deceleration?
A DC bus overvoltage condition can occur when the motor regenerates energy during deceleration. This is particularly common with high-inertia loads or equipment requiring rapid stopping. The regenerated energy flows back into the drive and increases the DC bus voltage. If the voltage rises beyond the allowable protection level, the drive may generate an overvoltage fault. Troubleshooting should include checking the deceleration time, load inertia, braking requirements, and overall operating cycle. If rapid braking is required, the braking system should be properly engineered for the actual regenerative energy.

7. How should 20BC105GJANNANC0 be configured and commissioned with a motor?
Before commissioning, verify the incoming power connections, motor wiring, grounding, and control circuits. The motor nameplate information should then be entered accurately, including rated voltage, rated current, rated frequency, and rated speed. Start and stop commands, minimum and maximum speed, acceleration time, and deceleration time should be configured according to the machine requirements. Initial testing should be performed at low speed while checking motor rotation direction, output current, drive status, and fault information. After basic operation is confirmed, the motor can be gradually tested across its normal operating speed and load range.

8. How can 20BC105GJANNANC0 be integrated into a PLC automation system?
20BC105GJANNANC0 can be used as the motor drive within a PLC-based automation system. Its 24 V I/O can be used for basic control and status signals, including start, stop, enable, reset, run status, and fault feedback. Depending on the system configuration, a suitable analog signal can also be used for speed reference. During PLC integration, the control engineer should verify the input and output signal logic, speed-reference scaling, fault-reset operation, drive status feedback, and emergency-stop circuit. Proper coordination between the PLC program, drive parameters, and machine safety circuit is essential for stable and predictable motor control.