上海维宏电子科技股份有限公司
Weihong Electronic Technology Co., Ltd.
- 74 - Specialized, Concentrated, Focused
5.4.1.2 Parameter Setting of YASKAWA Σ–Ⅱ Servo Driver
LXXXX
(Hexadecimal
system)
Monitor if the number of sent and received pulses is
correct by setting this parameter. In Weihong control
system, the correct quantity of pulses sent by control
card is detected by pulse inspection in order to
determine whether there is electrical interference.
Direction
selection
Control mode
selection
Bit 0: Set 0, ―CCW‖ is forward rotation (viewed from the
load end of screw ball); Set 1, the rotation direction of
the motor is reversed.
Bit 1: Set 1, position control mode (calculate pulse
instruction all the time).
Selection
servo off or
alarm stop
mode
Bit 0: Set ‖0‖, stopping the motor by applying dynamic
brake(DB) which will be maintained after stop;
Set ‖1‖, stopping the motor by applying dynamic
brake(DB) and then the motor can rotate freely after
stop.
Select pulse
instruction
mode
Bit 0: Set 5, select the instruction input mode as ―pulse
+ direction‖, negative logic.
Bit 3: Set 0, input differential signal into filter.
Encoder
cycle-divided
ratio
(Pulses output
per motor
cycle by
encoder after
cycle-divided)
Encoder Pulse No. per Motor
Circle (pulse/ revolution)
Electronic
gear ratio
(numerator)
Pn202 = pulse No. of each encoder circle × 4 ×
mechanical deceleration ratio.
Pn203 = (screw pitch/ pulse equivalent).
Typical value: pitch 5mm, encoder 17-bit, deceleration
ratio 1:1, pulse equivalent 0.001mm, Pn202＝16384;
Pn203＝625.
Pitch 5mm, encoder 17-bit, deceleration ratio 1:1,
pulse equivalent 0.0005mm, Pn202＝8192; Pn203＝
625.
Electronic
gear ratio
(denominator)
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