Yaskawa G7 Drive User Manual download pdf (Page 234)

Acceleration and Deceleration Characteristics

6-17

Switching Acceleration and Deceleration Time Using Multi-Function Input Terminal

Commands

Using the Drive, you can set four acceleration times and four deceleration times. When the multi-function

input terminals (H1-) are set to 7 (acceleration/deceleration time selection 1) and 1A (acceleration/decel-

eration time selection 2), you can switch the acceleration/deceleration time even during operation by combin-

ing the ON/OFF status of the terminals.

The following table shows the acceleration/deceleration time switching combinations.

Switching Acceleration and Deceleration Time Automatically

Use this setting when you want to switch acceleration/deceleration time automatically using the set frequency.

When the output frequency reaches the set value in C1-11, the Drive switches the acceleration/deceleration

time automatically as shown in the following diagram.

Set C1-11 to a value other than 0.0Hz. If C1-11 is set to 0.0Hz, the function will be disabled.

Fig 6.18 Acceleration/deceleration Time Switching Frequency

Adjusting Acceleration and Deceleration Time Using an Analog Input

If you set H3-09 (Multi-function Analog Input Terminal A2 Function Selection) or H3-05 (Multi-function

Analog Input Terminal A3 Function Selection) to 5 (acceleration/deceleration time gain), you can adjust the

acceleration/deceleration time using terminal A2's input voltage.

The Drive's acceleration time when the acceleration time has been set in C1-01 is as follows:

Acceleration time = C1-01 set value x acceleration/deceleration time gain

Acceleration/Decelera-

tion Time Selection 1

Terminal

Acceleration/Decelera-

tion Time Selection 2

Terminal

Acceleration Time Deceleration Time

OFF OFF C1-01 C1-02

ON OFF C1-03 C1-04

OFF ON C1-05 C1-06

ON ON C1-07 C1-08

Acceleration/

deceleration time

switching frequency

(C1-11)

C1-07 rate C1-01 rate C1-02 rate C1-08 rate

When output frequency ≥ C1-11, acceleration and deceleration are performed using

Acceleration/deceleration Time 1 (C1-01, C1-02).

When output frequency < C1-11, acceleration and deceleration are performed using

Acceleration/deceleration Time 4 (C1-07, C1-08).

Output frequency

1 2 ... 229 230 231 232 233 234 235 236 237 238 239 ... 453 454

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Yaskawa G7 Drive User Manual Page 234