Setting Of Bias Speed; Setting Of Acceleration Time - Mitsubishi FX3G Series User Manual

FX /FX /FX PLC User's Manual - Positioning Control Edition
3G 3U 3UC
Built-in Positioning Functions
4.2.6

Setting of Bias Speed

To control the stepping motor using each instruction, set the bias speed considering the resonance range of
the stepping motor and the automatic start frequency.
Use the devices shown in the following table to determine the bias speed for each pulse output destination
device.
Pulse output
destination device
Y000
Y001
*1
Y002
*2
Y003
*1. Y002 (pulse output destination) cannot be specified when the 14-point or 24-point type FX
connected.
*2. Devices related to Y003 (pulse output destination) are only valid if two FX
connected to the FX
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
Y000
Y001
*1
Y002
*2
Y003
*1. Y002 (pulse output destination) cannot be specified when the 14-point or 24-point type FX
connected.
*2. Devices related to Y003 (pulse output destination) are only valid if two FX
connected to the FX
*3. Only available for FX
B - 44
Bias speed
Initial value
D8342
D8352
0Hz
D8362
D8372
PLC.
3U
*3
.
Acceleration
Initial value
Time
D8348
D8358
100ms
D8368
D8378
PLC.
3U
/FX PLC Ver. 2.20 or later and FX
3U 3UC
4.2 Setting of Various Items Regarding Speeds
Setting range
1/10 or less of maximum speed:
If the value is set to more than 1/10 of the maximum speed,
the bias speed will be automatically set to 1/10 of the
maximum speed.
Setting range
50 to 5,000 ms:
If the value is set to 49 ms or less, the acceleration time will
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.
3G
4 Before Programming
PLC is
3G
-2HSY-ADP adapters are
3U
PLC is
3G
-2HSY-ADP adapters are
3U