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System Manual – MOVIDRIVE® compact Drive Inverters
3
Explanation of the parameters
Parameters
P205 Load feedfor-
ward CFC
Load feedforward CFC (only effective in CFC and SERVO operating modes).
Setting range: –150 ... 0 ... 150 %
This parameter determines the initial value of the torque setpoint upon enable. The
parameter must be set if increased starting torque is required when the drive is enabled.
For example, a setting greater than 0 % makes it possible to prevent the unwanted sag-
ging of hoists when the brake is released. This function should only be used in hoists
without counterweight.
Recommended setting: Value of the active current (P005 [% I
N
]) when n = 0 is specified.
P206 Sampling
time n-control
Sampling time n-control only effective in CFC and SERVO operating modes.
Setting range: 1 ms / 0.5 ms
The setting 0.5 ms improves speed control for dynamic drives with low moment of
inertia.
P207 Load feedfor-
ward VFC
Load feedforward VFC only effective in VFC-n-CTRL operating modes.
Setting range: –150 ... OFF ... 150 %
This parameter determines the initial value of slip control upon enable. A setting greater
than 0 % causes the slip control to be subject to pre-stressing, which means that the mo-
tor develops higher torque when it is enabled. This setting can, for example, prevent the
unwanted sagging of hoists when the brake is released. This function should only be
used in hoists without counterweight.
Setting values greater than 150 % switches off the function (no pre-stressing).
In VFC & HOIST mode and with a value greater than 150 % set, pre-stressing of 0.5 x s
N
is in effect.
Recommended setting: Value of the active current (P005 [% I
N
]) at minimum speed.
P21x Hold
controller
Hold control only parameter set 1.
The hold control function is used to make sure that the drive does not drift during stand-
still. It can only be activated for operating modes with speed control (encoder feedback).
Hold control is active when an input terminal programmed to /HOLD CONTROL (P6xx
Terminal assignment) has a “0“ signal. The unit 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 gain factor setting is supported in the startup function of the speed
controller in MOVITOOLS\SHELL or in the DBG11B keypad. The 7-segment display
shows status '7' when hold control is active.
P210 P gain hold
controller
Setting range: 0.1 ... 0.5 ... 32
The parameter corresponds to the proportional gain of a position controller and is only
effective in conjunction with the activated 'Hold control' function.
AUTO
P6..
P60.
P600
Summary of Contents for MOVIDRIVE compact MCH41A
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