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5-9. S-RATE DRIVE Parameter Adjusting Function
For S-RATE DRIVE, internal parameters can be adjusted. To perform S-RATE DRIVE, the 4 internal parameters
of SSRATE, SERATE, SCSPD1 and SCSPD2 are required first.
Usually, these parameters are automatically set to initial values when SRATE, SLSPD and SHSPD are set but
can be adjusted to optional values by respective adjust commands.
The adjustable parameters are as follows.
Data name
Adjust command
----------------------------------------------------------------------------------------------------------
SSRATE (time constant at a start of acceleration and an end of deceleration)
SSRATE ADJUST
SERATE (time constant at an end of acceleration and at a start of deceleration)
SERATE ADJUST
SCSPD1 (linear rate start speed at acceleration and linear rate end speed at deceleration)
SCSPD1 ADJUST
SCSPD2 (linear rate end speed at acceleration and linear rate start speed at deceleration)
SCSPD2 ADJUST
(1) SSRATE
Explanation of data ……
Indicates the momentary time constant at a start of acceleration and at a end of
deceleration.
The time constant changes smoothly from SSRATE to SRATE between SLSPD and SCSPD1.
Initial value ……………
Automatically set nearly to an eightfold value of SRATE by the SRATE SET command.
Note1: When DRIVE TYPE is the fixed mode,the initial value of SSRATE
may be a
nonexistent value in the rate data table depending on the SRATE value.
(Even if the eightfold value of SRATE does not exist in the rate data table,
the eightfold value of SRATE is adopted as an initial value of SSRATE.)
Note2: When the SRATE value is large, the SSRATE value cannot exceed the maximum
settable rate value.
The maximum rate value in each drive type is approximately
as shown below.
L-TYPE ……………… Approx. 1030ms/1000Hz
M-TYPE ……………… Approx. 51.5ms/1000Hz
H-TYPE ……………… Approx. 5.15ms/1000Hz
Arithmetic mode … When resolution data is supposed to be D
Maximum rate value=1,030 ÷ D(ms/1000Hz)
(For the details of the arithmetic mode,
refer to the User's Manual [Applied Functions Part].)
Adjusting range …………
SSRATE≧SRATE
Note1: When SSRATE<SRATE, is specified, SSRATE=SRATE.
Note2: After the SRATE SET command is executed, the SSRATE value adjusted prior to the
execution is invalidated and reset to the initial value.
When DRIVE TYPE has been changed by the SPEC INITIALIZE1 command, the SSRATE
value is also reset to the initial value.
(2) SERATE
Explanation of data ……
Indicates the time constant at an end of acceleration and at a start of
deceleration.
The time constant changes smoothly from SRATE to SERATE between SCSPD2 and SHSPD.
Initial value ……………
The same as SSRATE.
Adjusting range …………
The same as SSRATE.
Содержание C-875
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