Lenze ECSCAxxx - Manual (Page 360)

System modules
MCTRL_MotorControl (node number 131)
Parameterising phase controllers
13
l
360 EDBCSXA064 EN 3.2
13.20.8 Parameterising phase controllers
The angle controller is required, for instance, to achieve an angle−synchronous operation
and a drift−free standstill.
Parameter setting
1. Assign MCTRL_nPosSet_a with a signal source which provides the angular difference
between set angle and actual angle.
2. Enter a value > 0 at MCTRL_nPosLim_a.
3. Set MCTRL_bPosOn_b = TRUE.
4. Set a highest possible proportional gain (V
pn)
of the speed controller in C0070.
In the PLC program, the MCTRL_nNAdapt_a variable can be used to change the
proportional gain (V
pn
):
– V
pn
= MCTRL_nNAdapt_a [%] × C0070
– Default: MCTRL_nNAdapt_a = 100 % ð V
pn
= 100 % × C0070 = C0070
5. Set the gain of the phase controller > 0 via C0254.
Increase C0254 during operation until the drive has the required control mode.
Code Possible settings IMPORTANT
No. Designation Lenze/
{Appl.} Selection
C0070 Vp speedCTRL 3.0 Proportional gain of speed
controller (V
pn
)
^ 141
0.00 { 0.01} 127.99
C0254 Vp angle CTRL 0.4000 Phase controller gain (V
p
) ^ 360
0.0000 { 0.0001} 3.9999
Angle controller influence
The output of the phase controller is added to the speed setpoint.
ƒ When the actual angle is lagging, the drive is accelerated.
ƒ When the actual angle is leading, the drive is decelerated until the required angular
synchronism has been reached.
The influence of the phase controller consists of:
ƒ Angular difference multiplied by the gain V
p
(C0254).
ƒ Influence via an analog signal at MCTRL_nPAdapt_a.
V
p
= C0254 × MCTRL_nPAdapt_a / 16384
ƒ Limitation of the phase controller output
– The output of the angle controller is limited to the
±MCTRL_nPosLim_a value.
–
±MCTRL_nPosLim_alimits the maximum speed−up of the drive at great angular
differences.