TOSHIBA

Drive Fault Displays and Explanations (cont'd)

U-PHASE SHORT-CIRCUIT or V PHASE SHORT-CIRCUIT or W PHASE SHORT-CIRCUIT

Cause: Drive detected short-circuit in transistor.

Comments: Replace transistor. Contact your Toshiba distributor for authorized repair.

LOAD-END OVERCURRENT

Cause: Drive detected short-circuit on output.

Comments: Check for phase-phase short. Meg motor/leads with leads disconnected from drive. Remove any power factor correction caps on motor. See Item 169, OUTPUT SHORT-

CIRCUIT DETECTION SELECT.

OVERVOLTAGE (ACCEL) or OVERVOLTAGE (RUN)

Cause: Bus exceeded 393 VDC (230 volt drive),or 787 VDC (460 volt drive).

Comments: Incoming AC may have gone high or spiked (verify with Item 289,290, 291, or 292 set to "16"); a line reactor or a lower tap on transformer may help. Motor may be mechanically forced to run faster than drive is commanding; install appropriate dynamic braking resistor (see page 9-16). On eccentric cyclic loads like presses or pump jacks, contact your Toshiba distributor for special programming instructions that may make a DBR unnecessary.

OVERVOLTAGE (DEC)

Cause: Bus exceeded 393 VDC (230 volt drive),or 787 VDC (460 volt drive).

Comments: Incoming AC may have gone high or spiked (verify with Item 289 set to "16"); a line reactor or a lower tap on transformer may help. Item 11, DECELERATION TIME #1 may be too short. Drive will automatically change decel time with Item 12, ACC/DEC PATTERN ADJUST LOW set to "1". Make sure Item 145, OVERVOLTAGE STALL PROTECTION is set to "0". Motor may be mechanically forced to run faster than drive is commanding (due to large load inertias mechanical couplings); install appropriate dynamic braking resistor (see page 9-16). On eccentric cyclic loads like presses or pump jacks, contact your Toshiba distributor for special programming instructions that may make a DBR unnecessary.

INVERTER OVERLOAD

Cause: Drive exceeded 110% of its rated current for too long of a time.

Comments: This trip indicates that the drive output exceeded its rated current for specific amounts of time. For example, 100 HP and smaller drives can output 150% of their rated current for 120 seconds, 130% for 240 seconds, 170% for 3.5 seconds, and 185% for 0.5 seconds.

If using DC Injection, Item 147, DC INJECTION CURRENT MAGNITUDE or Item 148 DC INJECTION TIME they may be too large. If Item 42, PWM CARRIER FREQUENCY is greater than

8 KHz, try carrier frequencies less than 8 KHz. Programming Item 161, OVERLOAD SELECTION to "1" or "3" (soft stall on) makes the drive reduce output frequency/voltage to shed load (works best on variable torque applications). Motor or load bearings may have seized. Enabling True

Torque Control (see page 9-31) may reduce drive's current output and solve the problem. Make sure that drive is seeing voltage on all three of its input phases. Drive may be undersized.

MOTOR OVERLOAD

Cause: Motor is in danger of overheating because it drew too much current for too long of a time, as determined by the drive.

Comments: See page 9-17. Check Items 158, 159, 160, and 161. If trip occurred at a low frequency, the setting of Item 159, OVERLOAD REDUCTION START FREQUENCY is probably critical. Motor overload protection can be turned off by placing a "2" or "3" in Item 161. Check value in Item 160, MOTOR 150% OVERLOAD TIME LIMIT.

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Toshiba H3 manual Drive Fault Displays and Explanations contd, Motor Overload
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H3 specifications

The Toshiba H3 is a notable addition to Toshiba's lineup of high-performance laptops, designed for users who demand both power and portability. It combines sleek aesthetics with robust technology to meet the needs of modern professionals, students, and gamers alike.

One of the standout features of the Toshiba H3 is its high-resolution display. The laptop is equipped with a vibrant full HD screen that boasts excellent color accuracy and wide viewing angles. This makes it ideal for multimedia consumption, graphic design, and video editing. The screen's anti-glare coating further enhances usability, allowing users to work comfortably in various lighting conditions.

Powering the Toshiba H3 is a selection of the latest Intel processors, which deliver exceptional performance for multitasking and demanding applications. Coupled with high-speed SSD storage, users can experience rapid boot times and quick access to their files and applications. The laptop's RAM options ensure that users can customize their system to handle everything from casual browsing to resource-intensive tasks with ease.

In terms of connectivity, the Toshiba H3 does not disappoint. It features multiple USB ports, including USB Type-C, which supports fast charging and data transfer. HDMI and mini display ports allow for easy connection to external displays, while dual-band Wi-Fi provides a fast and stable internet connection, perfect for streaming and online gaming. The inclusion of Bluetooth capability enhances wireless connectivity for peripherals and accessories.

The design of the Toshiba H3 is both stylish and functional. Its lightweight chassis makes it easy to carry, and the durable build quality ensures that it can withstand the rigors of daily use. The backlit keyboard is another thoughtful addition, allowing for comfortable typing in low-light environments.

The Toshiba H3 also emphasizes security, offering features such as a fingerprint scanner for quick and secure logins. This is particularly relevant in today’s digital landscape, where data protection is a priority.

Overall, the Toshiba H3 represents a blend of cutting-edge technology, reliable performance, and user-friendly features, making it a compelling option for anyone in need of a capable and stylish laptop. Whether for work, study, or play, the H3 stands ready to deliver an excellent computing experience.
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