TOSHIBA

Operating the UPS

5.7Operating the UPS

5.7.1AC Input Mode (Normal Operation)

The following illustration shows circuit power flow when the UPS is operating normally in the AC Input Mode. The rectifier includes a boost chopper circuit that converts the AC input power into DC power. The boost chopper circuit maintains a constant voltage with current limiting abilities for charging the batteries. The rectifier supplies a DC voltage of the proper level to the inverter section. The inverter section generates a high quality sine wave output voltage. The batteries are maintained in a constantly charged state when the UPS is in the “Normal Operation Mode.”

MBS

Isolation

Transformer

Model

MCCB

Input

Power

 

Bypass

Converter

Inverter

 

Output

 

Power

 

Chopper

Batteries

Power flow in AC Input Mode

5.7.2Bypass Mode

If the UPS unit is severely overloaded or develops an internal fault, power flow is automatically switched from the main circuit to the Bypass circuit. Power flow through the bypass is shown in the following illustration. This changeover occurs automatically in less than 4 milliseconds in phase (Make-Before-Break). If the power flow is transferred to the Bypass circuit because of an overload and that overload condition ends within a specified period of time, then the power flow will "re-transfer" to the AC Input Mode (Normal Operation) automatically. If the power flow is transferred to the Bypass circuit due to a fault condition, then the power flow must be transferred manually from the UPS's Bypass circuit back to the Inverter circuit after repairing the fault (see "Start-up Procedure"). If the power flow is transferred to the

Bypass circuit due to an overload condition, then the power flow will automatically transfer from the UPS's Bypass circuit back to the Inverter circuit after removing the overload (see "Overload Operation").

Isolation

 

Transformer

 

Model

Converter

 

MCCB

Input

Power

MBS

Bypass

Inverter

Output

Power

Chopper

Batteries

Power flow in Bypass mode

5.7.2.1 Bypass Mode for Optional Alternate Input Models

36

Page 37
Image 37
Toshiba 4200FA user manual Operating the UPS AC Input Mode Normal Operation, Power flow in AC Input Mode Bypass Mode

4200FA specifications

The Toshiba 4200FA is a multifunctional printer that stands out in both small office and corporate environments. Esteemed for its reliability and efficiency, the Toshiba 4200FA offers businesses a versatile solution for their printing, scanning, copying, and faxing needs. One of its primary strengths is the ability to handle large print volumes, which makes it an ideal choice for high-demand settings.

Equipped with advanced printing technology, the Toshiba 4200FA delivers impressive print speeds of up to 42 pages per minute. This speed allows users to complete large jobs quickly, significantly minimizing downtime in busy workplaces. The device supports various paper sizes, ranging from standard letter to legal and custom dimensions, meeting diverse business requirements.

The resolution of up to 1200 x 1200 dpi ensures that printed documents are sharp and professional, suitable for both internal communications and customer-facing materials. Moreover, the Toshiba 4200FA is designed for user-friendliness, featuring an intuitive touch-screen interface that simplifies navigation, making it easy for employees to operate the machine without extensive training.

In terms of connectivity, the Toshiba 4200FA is equipped with multiple options including USB, Ethernet, and Wi-Fi capabilities, enabling seamless integration into existing workflows. Additionally, it is compatible with various mobile printing solutions, allowing users to print from their smartphones and tablets directly, which is increasingly essential in today’s mobile-centric work environments.

Security is also a priority for the Toshiba 4200FA. With features such as secure printing, user authentication, and data encryption, the device ensures that sensitive information remains protected against unauthorized access. This is particularly valuable for organizations that handle confidential documents.

Sustainability is another noteworthy aspect. The Toshiba 4200FA incorporates energy-efficient technologies that reduce power consumption during both operation and standby modes. Its long-life consumables and duplex printing capabilities further contribute to reducing overall waste and operational costs.

In summary, the Toshiba 4200FA is a robust multifunction printer that offers excellent speed, quality, versatility, and security, making it a valuable addition to any business environment looking to enhance productivity and efficiency while maintaining control over costs and resources.