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5-7. S-RATE SCAN DRIVE Function
S-shaped accelerating/decelerating drive is performed by the +/- S-RATE SCAN command.
At the S-shaped accelerating/decelerating drive, the speed difference between SLSPD and SHSPD is divided
into 3 equal parts.
In the mid-speed area of the 3 equally-divided parts, linear acceleration/deceleration
is performed by SRATE.
In the remaining areas, curvilinear smooth acceleration/deceleration is performed.
The drive is stopped by one of the methods described in 5-10., 5-11. and 5-12.
The data required for S-RATE SCAN DRIVE is as follows:
Data name
Setting command
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SHSPD (high speed for S-RATE DRIVE)
SHSPD SET
SLSPD (low speed for S-RATE DRIVE)
SLSPD SET
SRATE (acceleration/deceleration time constant for S-RATE DRIVE)
SRATE SET
Note: When SLSPD≧SHSPD is specified, constant-speed drive is performed with SHSPD.
5-8. S-RATE INDEX DRIVE Function
S-shaped accelerating/decelerating drive is performed with the specified number of pulses
(or up to the target address) by the S-RATE INCREMENTAL INDEX command (or S-RATE ABSOLUTE INDEX command).
The acceleration/deceleration rate characteristics are the same as those of S-RATE SCAN DRIVE.
The data required for S-RATE INDEX DRIVE is as follows:
Data name
Setting command
-----------------------------------------------------------------------------------------------
SHSPD (high speed for S-RATE DRIVE)
SHSPD SET
SLSPD (low speed for S-RATE DRIVE)
SLSPD SET
SRATE (acceleration/deceleration time constant for S-RATE DRIVE)
SRATE SET
Specified number of pulses (target address)
When S-RATE INDEX DRIVE is started
Note: When SLSPD≧SHSPD is specified, constant-speed drive is performed with SHSPD.
Содержание C-875
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