Setting Of Bias Speed; Setting Of Acceleration Time - Mitsubishi Electric FX3S Series User Manual

FX /FX /FX
3S 3G 3GC
Built-in Positioning Functions
4.2.6

Setting of Bias Speed

To control the stepping motor using each positioning instruction, set the bias speed considering the
resonance range of the stepping motor and the self-starting frequency.
Use the devices shown in the following table to determine the bias speed for each pulse output destination
device.
Pulse output
destination device
*1.
*2.
4.2.7

Setting of Acceleration Time

Set the time required for acceleration from the bias speed to the maximum speed.
If the output pulse frequency is less than the maximum speed, the actual acceleration time will be shorter than
the set acceleration time.
If the variable speed pulse output (PLSV) instruction is used, the set acceleration time is only valid during
acceleration/deceleration (M8338 = ON)
Use the devices shown in the following table to determine the acceleration time for each pulse output
destination device.
Pulse output
destination device
*1.
*2.
*3.
Downloaded from ManualsNet.com
/FX /FX PLC User's Manual - Positioning Control Edition
3U 3UC
Bias speed
Y000 D8342
Y001 D8352
*1
D8362
Y002
*2
D8372
Y003
Y002 is not available in FX
Y003 is available only when two high-speed output special adapters are connected to the FX
Acceleration
Time
Y000 D8348
Y001 D8358
*1
D8368
Y002
*2
D8378
Y003
Y002 is not available in FX
Y003 is available only when two high-speed output special adapters are connected to the FX
Only available for FX PLC Ver. 2.20 or later and FX
3UC
search engine
Initial value
1/10 or less of maximum speed:
If the value is set to more than 1/10 of the maximum speed,
0Hz
the bias speed will be automatically set to 1/10 of the
maximum speed.
PLC (14-point and 24-point type) and FX
3G
*3
.
Initial value
50 to 5,000 ms:
If the value is set to 49 ms or less, the acceleration time will
100ms be automatically set to 50 ms. If the value is set to 5,001 ms
or more, the acceleration time will be automatically set to
5,000 ms.
PLC (14-point and 24-point type) and FX
3G
4 Before Programming
4.2 Setting of Various Items Regarding Speeds
Setting range
/FX PLC.
3S 3GC
Setting range
/FX PLC.
3S 3GC
/FX /FX /FX PLC.
3S 3G 3GC 3U
A
B
Apx.
PLC.
3U
PLC.
3U
B - 55