3－22

322

PID Control

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Parameters

Parameters

 

Drive

 

 

Configuring

 

 

 

 

 

 

 

When enabled, the built-in PID loop calculates an ideal inverter output value to cause a loop feedback process variable (PV) to move closer in value to the set point (SP). The frequency command serves as the SP. The PID loop algorithm will read the analog input for the process variable (you specify the current or voltage input) and calculate the output.

ξA scaled factor in A075 lets you multiply the PV factor, converting it into engineering units for the process.

ξProportional, integral, and derivative gains are all adjustable.

ξSee “PID Loop Operation” on page 4-56for more information.

 

“A” Function

 

Run

 

Defaults

Func.

Name /

Description

Mode -FE -FU

Units

Code

SRW Display

Edit

(EU)

(USA)

A071

PID enable

 

Enables PID function,

 

00

00



 

 

 

two option codes:

 

 

 

 

 

 

 

00

PID Disable

 

 

 

 

 

 

 

01

PID Enable

 

 

 

 

 

PID Mode

OFF

 

 

 

 

A072

PID proportional gain

Proportional gain has a range of

9

1.0

1.0



 

 

 

0.2 to 5.0

 

 

 

 

 

PID P

0001.0

 

 

 

 

 

 

A073

PID integral time constant

Integral time constant has a

9

1.0

1.0

sec

 

 

 

range of 0.0 to 150 seconds

 

 

 

 

 

PID I

0001.0s

 

 

 

 

 

 

A074

PID derivative time constant

Derivative time constant has a

9

0.00

0.00

sec

 

 

 

range of 0.0 to 100 seconds

 

 

 

 

 

PID D

000.00s

 

 

 

 

 

 

A075

PV scale conversion

Process Variable (PV), scale

 

1.00

1.00



 

 

 

factor (multiplier), range of 0.01

 

 

 

 

 

PID Cnv

001.00%

to 99.99

 

 

 

 

A076

PV source setting

 

Selects source of Process Variable

 

00

00



 

 

 

(PV), option codes:

 

 

 

 

 

 

 

00

[OI] terminal (current in)

 

 

 

 

 

 

 

01

[O] terminal (voltage in)

 

 

 

 

 

 

 

02

ModBus network

 

 

 

 

 

PID INP

OI

10

Calculate function output

 

 

 

 

A077

Reverse PID action

Two option codes:

 

00

00



 

 

 

00

PID input = SP-PV

 

 

 

 

 

 

 

01

PID input = -(SP-PV)

 

 

 

 

 

PID MINUS

OFF

 

 

 

 

A078

PID output limit

 

Sets the limit of PID output as

 

0.0

0.0

%

 

 

 

percent of full scale,

 

 

 

 

 

PID Vari

0000.0%

range is 0.0 to 100.0%

 

 

 

 

NOTE: The setting A073 for the integrator is the integrator’s time constant Ti, not the gain. The integrator gain Ki = 1/Ti. When you set A073 = 0, the integrator is disabled.

Page 104 Page 106
Page 105
Image 105
Hitachi CP-X200 instruction manual PID Control
Page 104 Page 106

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.
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