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5-17.DRIVE TYPE Switching Function
The acceleration/deceleration time constant method when the MCC05v2 is put in accelerating/decelerating
drive can be roughly classified into two modes, fixed data mode and arithmetic mode.
For the fixed data mode, the 3 types of L-TYPE, M-TYPE and H-TYPE are available for reasons of output
frequency,acceleration/deceleration time constant setting range and speed difference at acceleration/
deceleration, etc.
For the arithmetic mode, refer to the User's Manual [Applied Functions Part].
In the fixed data mode, the acceleration/deceleration time constant (URATE, DRATE) is fixed by the data
table beforehand, so the user must specify an appropriate time constant by No. of the data table.
For the rate data table, refer to Chapter 18. The speed range, rate range and speed difference at
acceleration/deceleration in each type are as follows.
Fixed data mode
Arithmetic mode
L-TYPE
M-TYPE
H-TYPE
Speed range
10Hz~100kHz
10Hz~800kHz
10Hz~3.3MHz
10Hz~3.3MHz
(LSPD,SLSPD)
Speed range
1Hz~100kHz
1Hz~800kHz
1Hz~3.3MHz
1Hz~3.3MHz
(except LSPD,SLSPD)
1000ms/1000Hz
50ms/1000Hz
5ms/1000Hz
1030ms/1000Hz
Rate range
~1.0ms/1000Hz
~0.05ms/1000Hz
~0.005ms/1000Hz
~0.004ms/1000Hz
Speed difference
51Hz/STEP
1kHz/STEP
10kHz/STEP
51Hz/STEP
(Note1)
~62Hz/STEP
~4kHz/STEP
~68kHz/STEP
~68kHz/STEP
Note1: The speed difference indicates a speed difference between before and after speed change at
acceleration/deceleration.
This speed difference is rather small at a low speed and gradually
increases as the speed is accelerated.
5-18.Present Speed Reading Function
Speed data can be read from the DRIVE DATA1, 2 and 3 PORTs during drive, and read data can be
converted into present speed by using the following formula:
160,000,000
Present Speed =
(Hz)
V
where, V : Read data
Note1: The range of speed to be read by using this function is from about 9.5Hz to 3.3MHz because the
data length is 3byte.
Be careful in reading speeds in the slow area.
Note2: Since the DRIVE DATA1, 2 and 3 PORTs are generally dedicated to read values of the PULSE COUNTER,
it is necessary to change the port function to reading speed data in case of reading speed.
To change the function, the SPEED PORT SELECT Command is used.
5-19.Set Data Reading Function
The SET DATA READ Command allows you to read various set data or SPEC INITIALIZE DATA.
This function is helpful for debugging or for applications requiring high reliability since it enables to
re-confirm data already set to each axis.
Содержание C-875
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