SEW-Eurodrive MOVIDRIVE compact MCH41A, System Manual

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176
System Manual – MOVIDRIVE® compact Drive Inverters
3
Operating modes
Parameters
VFC n-control VFC n-control (only with MCV, MCH) in parameter set 1 only.
Based on VFC operating mode, the VFC n-control operating mode allows for speed con-
trolled operation with an encoder installed on the motor shaft. The following encoders
can be used:
• Hiperface
®
encoder
• TTL sensors with negated tracks, encoders with signal level to RS422
• High-resolution incremental encoder with sine shaped tracks 1 V
SS
SEW-EURODRIVE recommends the use of encoders with 1,024 increments/revolution.
Speed control results in the following characteristics:
• Increased static control accuracy and higher dynamic response.
• Hold control: By programming a binary input to “/Hold control“ (P60x Binary inputs
basic unit / P61x Binary inputs option) a position-controlled standstill of the motor can
be accomplished under load. Set the hold controller with P210 P gain hold controller .
The startup function of SHELL not only supports motor startup (VFC) but also the addi-
tional controller setting of the speed controller. The following parameters relevant for n-
control are set:
Setting the parameter P820 4-quadrant operation 1 will be ignored; 4-quadrant opera-
tion is always active.
Settings after the startup function
P303 Current limit 1 I
max
(inverter) = 150 % I
motor
P302 Maximum speed 1
Depends on number of poles and rated
motor frequency
e. g. 2 pole / 50 Hz -> 3000 1/min
e. g. 4 pole / 60 Hz -> 1800 1/min
P301 Minimum speed 1 0 1/min
P500 Speed monitoring 1 MOTOR & REGENERATIVE
P501 Deceleration time 1 / P503 Deceleration time 2 0.1 s
P100 Setpoint source UNIPOL./FIX.SETPOINT
P101 Control signal source TERMINALS
P730 Brake function 1 ON
P731 Brake release time 1 For SEW motors: Setting in accordance
with motor data.
For non-SEW motors: Set the correct
value manually!
P732 Brake application time 1
P323 Premagnetizing time 1
Setting in accordance with specified motor
data
Settings after the startup function of the speed controller
P200 P gain speed controller
Setting in accordance with specified data
P201 Time constant n-controller
P202 Gain acceleration feedforward
P204 Filter speed actual value
P115 Filter setpoint
P203 Filter acceleration feedforward
P210 P gain hold controller
Position controller gain for the hold control
function
P910 Gain X controller
Position controller gain for IPOS
plus®
(positioning mode)
P130 ... P133 Ramp t11
Setting in accordance with specified data P136 Stop ramp t13
P137 Emergency stop ramp t14
P6..
P60.
P600