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Hitachi CP-X200 instruction manual －18, DC Braking DB Settings

Models: CP-X200

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DC Braking (DB) Settings

Normal DC braking performance The DC braking feature can provide additional stopping torque when compared to a normal deceleration to a stop. DC braking is particularly useful at low speeds when normal deceleration torque is minimal.

When you set A051 to 01 (Enable during stop), and the RUN command (FW/RV signal) turns OFF, the inverter injects a DC voltage into the motor windings during deceleration below a frequency you can specify (A052).

+

Running

 

Free run

DC brake

 

0

 

 

 

 

 

 

 

t

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-

 

 

A053

 

 

A055

 

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Parameters

Parameters

 

ConfiguringDrive

 

The braking power (A054) and duration (A055) can both be set. You can optionally specify a wait time before DC braking (A053), during which the motor will free run.

DC Braking – Frequency Detection You can instead set DC braking to operate during RUN mode only, by setting A051 to 02 (Frequency detection). In this case DC braking operates when the output frequency comes down to the one you specified in A052 while the RUN command is still active. Refer to the graphs figures below.

External DB and Internal DC braking are invalid during the frequency detection mode.

FW

ON

F-SET

A052

F-OUT

DB

Ex.1) Step change in F-SET.

FW

ON

F-SET

A052

F-OUT

DB DBDB

Ex.2) Analog change in F-SET.

Example 1, (above left) shows the performance with A051=02 with a step-changing frequency reference. In this case, when the reference goes to 0, the inverter immediately starts DC braking because the set point drops below the value specified in A052. DC braking continues until the set point exceeds A052. There will be no DC braking at next downward transition because the FW input is OFF.

Example 2, (above right) shows a gradually changing frequency reference, for example by analog input. In this case, there will be a DC braking period at starting because the frequency set point is lower than the value specified in A052.

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Image 101
Hitachi CP-X200 instruction manual －18, DC Braking DB Settings
Page 100 Page 102

CP-X200 specifications

The Hitachi CP-X200 is a versatile and robust projector designed to cater to the needs of educational and business environments. It combines affordability with high-quality performance, making it an attractive option for various presentations and multimedia applications.

At the heart of the CP-X200 is its high brightness capability, with a lumen output of 3,000 ANSI lumens. This feature enables the projector to deliver clear and vibrant images even in well-lit rooms. The resolution of XGA (1024 x 768 pixels) ensures that text and graphics are sharp, making it suitable for everything from classroom lectures to corporate presentations.

One of the standout characteristics of the Hitachi CP-X200 is its advanced lamp technology. The projector uses a long-lasting lamp that can provide up to 5,000 hours of usage in standard mode, allowing for extended intervals between lamp replacements. Additionally, the ECO mode can further enhance the lamp life, extending its longevity while reducing energy consumption.

The CP-X200 is equipped with a variety of connectivity options, including HDMI, VGA, and composite inputs, allowing users to easily connect it to various devices such as laptops, DVD players, and other multimedia systems. The inclusion of USB and RS-232 interfaces ensures compatibility with different control systems, making it a flexible choice for diverse setups.

Another significant feature is the projector's built-in 10-watt speaker, which provides decent audio output, eliminating the need for external speakers in smaller venues. The speaker system enhances presentations, ensuring that audio and visuals are cohesive, promoting better audience engagement.

Portability is another key aspect of the Hitachi CP-X200, which weighs just around 3.5 kg (approximately 7.7 lbs), allowing for easy transport between locations. Its compact design makes it suitable for both fixed installations and mobile use, catering to professionals who require a projector that adapts to various environments.

The user-friendly interface and robust remote control enhance the projector's operability, providing easy access to essential functions. Additionally, features such as auto keystone correction adjust the image to maintain consistent quality even when the projector is not perfectly aligned with the screen.

In summary, the Hitachi CP-X200 is a feature-rich projector that embodies reliability, performance, and ease of use. Its combination of high brightness, various connectivity options, long lamp life, portability, and integrated audio makes it an excellent choice for education and business professionals seeking a dependable presentation solution.