YASKAWA SVC User Manual page 110

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
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.
Acceleration/Deceleration
Rate Unit Selection
(OW 03. Bits 4 to 7)
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.
Register
Address
OW3A 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.
1 = reference units/s
100%
0
Speed
Linear Acceleration
(%)
Rate
(OL
1 = ms
100%
Reference speed
1
Speed
(%)
Linear Acceleration
Time Constant
(OL 36)
SVC SVR
Setting
Name
Range
0 to 65,535
3.4 Motion Parameter Details
3.4.2 Setting Parameter Details
2
.
2
Reference speed
Linear
Time
Deceleration Rate
36) (OL 38)
(t)
Time
(t)
Linear Deceleration
Time Constant
(OL 38)
Setting Unit Default
0.1 ms
Control mode
Phase
Position
0
Speed
3-57