Lenze Drive PLC Developer Studio 9300 Servo PLC (V8.x) - Manual (Page 68)

2.12 MCTRL_MotorControl (node number 131)
9300 Servo PLC
System blocks
2−54
L
9300 Servo PLC EN 5.0
2.12.9 Speed setpoint limitation
The speed setpoint limitation can be set under C0909:
Code LCD Possible settings Info
Lenze Selection
C0909 speed limit 1 Speed setpoint limitation
1 −175 % ... +175 %
2 0 % ... +175 %
3 −175 % ... 0 %
·
Select the speed setpoint via MCTRL_nNSet_a in [%] of n
max
.
·
n
max
is selected under C0011. ( ^ 2−51)
2.12.10 Phase controller
The phase controller is needed, i.a., to ensure phase−synchronous operation and drift−free standstill.
Parameter setting
1. Assign MCTRL_nPosSet_a to a signal source which provides the phase difference between
set phase and actual phase.
2. Define a value > 0 for MCTRL_nPosLim_a.
3. Set MCTRL_bPosOn_b = TRUE.
4. Set the gain of the phase controller > 0 via C0254.
– Before setting C0254, select a proportional gain for the speed controller as high as possible
under C0070. ( ^ 2−52)
– Increase C0254 during operation until the drive shows the required control performance.
Code LCD Possible settings Info
Lenze Selection
C0254 Vp angle CTRL 0.4000 Gain of angle controller (V
p
)
0.0000 {0.0001} 3.9999
Effect of the phase controller
The output of the phase controller is added to the speed setpoint.
·
If the actual phase is lagging, the drive is accelerated.
·
If the actual phase is leading, the drive is decelerated until the desired phase synchronisation
is achieved.
The influence of the phase controller consists of:
·
Phase difference multiplied by the gain V
p
(C0254).
·
Additional influence via an analog signal at MCTRL_nPAdapt_a.
(V
p
= C0254
ž
MCTRL_nPAdapt_a / 16384)
·
Limitation of the angle controller output to ± MCTRL_nPosLim_a.
Limitation of the phase controller output
This value limits the maximum compensation speed of the drive in the event of large phase
differences.