TOSHIBA

Parameter Explanations (cont'd)

DRIVE AND MOTOR OVERLOADS

The H3 features separate overload curves for itself and the motor. All H3s can output 110% of their rated current continuously; current levels above 110% are considered overload. The drive overload is fixed: 100 HP and smaller H3's overload is 150% of their rated current for 120 seconds; 125 HP and larger H3's overload is 130% for 120 seconds. The motor's overload curve is defined by Items 158, 159, 160, and output frequency:

Item 158, ELECTRONIC THERMAL PROTECT LEVEL 1 - use this parameter to scale the motor overload protection to a specific motor's amp rating. Can be entered in percent or in amps, depending on the setting of Item 296, CURRENT UNITS SELECTION. For percent setting, divide motor full load amps by drive full load amps and multiply by 100.

Item 159, OVERLOAD REDUCTION START FREQUENCY - The motor overload protection provided by the drive is speed-sensitive by default. With default setting, a H3 at 115% of the current set by ELECTRONIC THERMAL PROTECT LEVEL 1 will trip on MOTOR OVERLOAD sooner at 15 Hz than at 60 Hz. Users who have allowed for reduced motor cooling at low speeds can reduce this parameter to get more overload capability. The drive's overload protection is speed sensitive at frequencies below the value entered here.

Item 160, MOTOR 150% OVERLOAD TIME LIMIT - This parameter sets the time the drive will output 150% of the current set by Item 158, ELECTRONIC THERMAL PROTECTION LEVEL #1 before tripping on MOTOR OVERLOAD.

Item 161, OVERLOAD SELECTION - This parameter adjusts the overload protection scheme.

0:Standard

1:Soft stall on. Soft stall reduces output frequency only when the drive is in its overload region. Soft stall helps prevent drive from tripping on INVERTER OVERLOAD.

2:Motor overload trip off.

3:Soft stall on and motor overload trip off.

Motor overload sensing is "on" unless "2" or "3" is selected.

INVERTER OVERLOAD cooling time is approximately one minute after trip

MOTOR OVERLOAD cooling time is approximately five minutes after trip

DBR OVERLOAD cooling time is approximately thirty seconds after trip

Item 162, STALL PROTECTION ENABLE - Drive current limits when stall is turned "on".

Item 163, STALL PROTECTION LEVEL - Drive will reduce its output frequency and voltage automatically to limit output current to the value programmed here.

Item 164, UNDERVOLTAGE TRIP SELECTION - The drive can be programmed to UNDERVOLTAGE TRIP when the DC bus voltage is under a factory-set value by programming a "1" here. See Item 165 also. An undervoltage alarm is available in the form of a drive output contact change; see Items 60, 63, or 66 and setting values 24/25 on page 9-11.

Item 165, UNDERVOLTAGE DETECT TIME - The DC bus must be low for at least the time entered here before the drive faults on UNDERVOLTAGE TRIP.

Item 166, LOW CURRENT DETECT SELECTION - The drive can be programmed to LOW CURRENT TRIP when its output current is below the value programmed in Item 167 for at least the time programmed in Item 168. Enter a "1" here to enable the low current detection. A low current alarm is available in the form of a drive output contact change; see Items 60,63, or 66 and setting values 26/27 on page 9-11.

Inspection

Specifications Precautions

Wiring

Jumpers

Panel

Keypad

Programming Parameters

Service

Dimensions

Index

9 - 18

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Toshiba H3 manual Drive and Motor Overloads
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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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