CHAPTER 4 Adjustment

3-2 Machine reference

The YK-X Series position detector uses a resolver having one position that can perform absolute reset in respect to one motor rotation.

When absolute reset is performed with the sensor method or stroke end method, the origin position will be set to a position where it can be reset immediately after the origin sensor reacts to the dog (where the origin signal is detected) or the stroke end (mechanical stopper) is detected.

The machine reference means the position relationship between the position where the robot detects the origin signal and the position where the absolute reset can be performed soon after the origin signal detection. (See Fig. 4-6.) The machine reference is expressed in the ratio of interval A to interval B shown in Fig. 4-6. Interval A is the minimum distance between the positions where absolute reset can be performed and interval B is the distance between the position where the origin signal is detected and the position where absolute reset can be performed soon after the origin signal detection.

The machine reference value is displayed on the optional MPB screen. (Unit: %)

Machine reference value = B/A 100(%)

!CAUTION

It is necessary for the machine reference to be adjusted in a specified range in order to keep the repeatability precision of the absolute reset position. (Factory- adjusted at shipment.)

Refer to "Chapter 4, 3-4 Adjusting the machine reference" for the machine ref- erence adjustment method .

Recommended machine reference value: 40 to 60% (26 to 74% only for Z-axis)

Machine reference

Origin signal detection

ON

Origin signal

Resolver

A

Positions where absolute reset can be performed

OFF

B

One motor revolution

Machine reference display on MPB screen

MPB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MANUAL

>RST. ABS

 

 

 

 

 

 

50% [MG] [S0H0J]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Machine reference (%)

 

 

 

 

 

 

 

 

 

 

 

M1=

50

M2=

56

M3=

52

 

 

M4=

66

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

M1

 

M2

 

 

M3

 

 

M4

 

 

M5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R-axis

 

 

X-axis

Y-axis

 

 

 

Z-axis

Fig. 4-6

4-10

Page 88
Image 88
Yamaha YK180X, YK120X owner manual Machine reference value = B/A ⋅ 100%, Machine reference display on MPB screen

YK120X, YK180X specifications

The Yamaha YK180X and YK120X are two of the latest offerings from Yamaha in the sphere of high-performance synthesizers, designed to cater to both novice and professional musicians. These models are part of Yamaha's commitment to innovation, combining advanced technologies with user-friendly interfaces to create instruments that inspire creativity.

The YK180X stands out with its 88 weighted keys that emulate the feel of an acoustic piano. This feature is particularly beneficial for pianists who seek a realistic playing experience. In contrast, the YK120X offers 61 semi-weighted keys, making it more portable while still providing a satisfying touch that balances playability and responsiveness. Both models incorporate Yamaha's renowned Graded Hammer Standard action, ensuring that the playing experience aligns with traditional piano dynamics.

One of the key technological advancements in both models is the integrated Pure CF Sound Engine. This technology captures the nuances of Yamaha's acclaimed concert grand pianos, delivering rich and authentic sound across a wide range of musical styles. Additionally, the synthesis engines in these synths allow for an expansive palette of sounds, from lush strings and bold brass to rich synthetic tones, enabling musicians to explore various genres effortlessly.

Another impressive feature of the YK180X and YK120X is the extensive library of built-in voices and styles. The YK180X boasts over 600 voices and 200 styles, while the YK120X comes with a diverse selection of over 400 voices and 150 styles, providing users with an array of options to enhance their performance. Both models also include a user-friendly interface with intuitive navigation, allowing for quick access to features and customization.

Connectivity is a critical aspect, and both synthesizers include USB to Host ports for easy integration with computers and mobile devices. With MIDI in and out options, musicians can connect to other musical gear, making these models versatile companions for stage performances and studio recordings alike.

In terms of additional features, the YK180X and YK120X come equipped with a built-in metronome and transpose functions, essential tools for practicing and performing. Moreover, the onboard recording capabilities allow musicians to capture their ideas and compositions quickly and efficiently.

Overall, the Yamaha YK180X and YK120X are powerful and versatile synthesizers that cater to a wide range of musical needs, from home practice to professional settings. With their superior sound quality, realistic playability, and innovative features, they represent an excellent choice for musicians looking to elevate their musical journey.