LSIS XBE-DC08A, Руководство пользователя, Страница: 405 / 1284

Po
sit
io
n
in
g
Chapter 4 Positioning Parameter & Operation Data
4-6
(6)
Bias Speed
Because the stepping motor has unstable torque near zero speed, 0~bias speed is skipped in operation to smooth the
rotation of motor and reduce the positioning time..
(a) The setting range is 0
∼
2,000,000[pps] in case of pulse unit.
If the Unit parameter is not "Pulse", The bias speed should be not less than 1 when converted to "pulse unit" by
Travel per revolution and pulse per revolution. if this value is smaller than 1, The PLC occurs error code "105" and
adjust bias speed to satisfy above condition automatically
.
[ Note ]
In case, Unit = mm, Pulse per revolution = 100 pls, Travel per revolution = 10000.0um, Unit multiplier
Available minimum bias speed can be calculated as below.
EX1) Travel per revolution (Al) = 10000.0um, Pulse per revolution(Ap)=1000pls
Trael per pulse = Travel per revolution (Al) / Pulse per revolution (Ap)
= 10000.0um/100pls
= 10.0um/pls = 0.6mm/min.
Note
1. If Bias speed is set as high, total operation time shall be reduced but if the setting value is too high,
it may cause the occurrence of impact sound in the start/end time and forces the excessive effect to the
machine. Cares shall be taken in using..
2. The bias speed should be set within the range as follows :
1) Bia
s speed ≤ Positioning speed data
2)
Bias speed ≤ Homing-low speed ≤ Homing-high speed
3)
Bias speed ≤ JOG low speed ≤ JOG high speed
3. It causes error in connection with bias speed in the following example..
1) Bias speed > Positioning speed data : error code 153
2) Bias speed > Homing-high speed : error code 133
3) Bias speed > Homing-low speed : error code 134
4) Bias speed > JOG high speed : error code 121
5) Bias speed > JOG high speed : error code 122
6) Bias speed > inching speed : error code 123
7) Converted Bias speed > 1pulse/s: error code 105