YASKAWA SVC - Page 110

3.4 Motion Parameter Details
3.4.2 Setting Parameter Details
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3
Parameters for Motion Control
Setting Precautions
The unit that is set in the Acceleration/Deceleration Rate Unit Selection bits (bits 4 to 7 in the
OW03 setting parameter) is used for this parameter.
 Specifying Acceleration/Deceleration Rates
You can use either of the following two methods to specify an acceleration/deceleration rate.

Setting the Acceleration/Deceleration Rate Directly
Set the rate within the range of 0 to 2,147,483,647 reference units/s
2
.
If a negative value is set, a setting parameter warning occurs and the axis operates at the max-
imum acceleration or deceleration rate.

Setting the Time to Reach the Rated Rotation Speed from Zero Speed
Set the rate within the range of 0 to 32,767 ms.
If a negative value is set, a setting parameter warning occurs and the axis operates as if a set-
ting of 0 was specified.
If a value greater than 32,767 is set, a setting parameter warning occurs and the axis operates
as if a setting of 32,767 was specified.
Note: Refer to the following sections for details on acceleration and deceleration parameters.
5.1.6 Acceleration/Deceleration Settings on page 5-11
5.1.7 Acceleration/Deceleration Filter Settings on page 5-14
Filter
 Filter Time Constant
Set the acceleration/deceleration filter time constant.
Setting Precautions
• Always make sure that bit 0 in the IW0C monitor parameter is set to 1 (Distribution
completed) before you change the filter time constant.
Register
Address
Name
Setting
Range
Setting Unit Default Control mode
OW3A Filter Time Constant 0 to 65,535 0.1 ms 0
(OW03. Bits 4 to 7)
0
1
(%)
(t)
1 = ms
100%
(OL36) (OL38)
(OL36) (OL38)
(%)
(t)
100%
Acceleration/Deceleration
Rate Unit Selection
Reference speed
Reference speed
Speed
Speed
1 = reference units/s
2
Linear Acceleration
Rate
Linear Acceleration
Time Constant
Linear Deceleration
Time Constant
Linear
Deceleration Rate
Time
Time
SVC
SVR
Position
Speed
Phase