SEW-Eurodrive MOVIPRO Ethernet/IP - Page 201

13
Parameter setting
Parameter descriptions
Manual – MOVIPRO
®
with EtherNet/IP™ or Modbus/TCP Fieldbus Interface
201
P206 Sampling time n-control
The parameter is only effective in "CFC and "Servo" operating modes.
Setting range: 1ms/0.5ms
Setting the time to 0.5ms improves speed control for dynamic drives with low moment
of inertia.
P207 Load precontrolVFC
The parameter is effective only in the operating modes with "VFC n-control".
Setting range: -150–Off–+150%
Determines the initial value of slip control upon enable.
If the parameter value is greater than 0%, the slip control is pre-stressed and the mo-
tor develops more torque upon enable. This setting can, for example, prevent the un-
wanted sagging of hoists when the brake is released. This function should only be
used in hoists without counterweight.
Parameter values greater than 150% switch off the function (no pre-stressing). In the
"VFC & Hoist" operating mode, the preload 0.5 x s
N
is effective with a parameter value
of greater than 150% (s
N
= nominal slip of the connected motor).
Recommended setting: Value of the active current (→2192) at minimal speed
P21. Hold controller
The position hold control function is only available in parameter set 1.
Serves for drift-free standstill control of the drive. The position hold control can only be
activated in operating modes with speed control (encoder feedback).
Hold control is active when an input terminal (→2215) programmed to /HOLD CON-
TROL has a "0" signal. The device then performs a stop using the "t11 up" or "t21
down" ramp. If the drive reaches speed zero, it is held in the position that is valid at
this point.
The startup function of the speed controller in the MOVITOOLS
®
MotionStudio engin-
eering software supports adjustment of the gain factor.
The 7-segment display of the device shows the status "A1.7" when hold control is act-
ive.
P210 P gain hold controller
AUTO
Setting range: 0.1–0.5–32
Corresponds to the proportional gain of a position controller. The parameter is only ef-
fective when the position hold control function is activated.
16998413/EN – 12/2016