REXROTH IndraDrive Fc FCS01, Operating Instructions Manual

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Rexroth IndraDrive FCS01.1 Parameterization
11-9
DOK-INDRV*--FCS01*****-IB01_EN-P
Parameter Setting value / description / note Device Supervisor
Parameter
record
P108 Switch-off mode
S P
0 ... 12
[ 1 ]
This parameter specifies the manner in which the output frequency is reduced after
"locking" (controller enable → low).
0 = Voltage disable: The output signal is switched off without delay. The FC
does not supply any output frequency. In this case, the motor is braked only
by mechanic friction. Immediate re-activation of the FC may cause an error
message.
1 = Ramp: The current output frequency is reduced analog to the remaining
braking time, from P103/P105.
2 = Ramp with delay: same as function1, but with regenerative operation, the
braking ramp is extended; with static operation, it is increased. Under certain
conditions, this function can suppress overvoltage deactivation or reduce the
power dissipation at the braking resistor.
Note: This function may not be programmed when defined braking is
required, for example with lifting gear.
3 = Immediate DC braking: The FC immediately switches to the preselected DC
current (P109). This DC current is supplied analog for the remaining time
>Time DC brake< (P110). Depending on the ratio of current output frequency
to max. frequency (P105), >Time DC brake< is reduced. The motor stops in a
time which is dependent upon the application. This is also in dependence upon
the load's mass moment of inertia, friction, and the set DC current (P109).With
this type of braking, no energy is recovered into the FC; heat loss occurs
primarily in the rotor of the motor.
4 = Constant stopping distance: The braking ramp starts at a delay if not
operated at maximum output frequency (P105). This results in a roughly
identical stopping distance from various current frequencies.
NOTE: This function cannot be used as a positioning function. This
function should not be combined with a ramp rounding (P106).
5 = Combined braking (only with linear characteristic): Depending on the
current DC bus voltage, a high-frequency voltage is applied to the first
harmonic. If possible the braking time (P103) is observed ⇒ additional heating
in the motor.
6 = Square ramp: The braking ramp has no linear course but decreases to the
second power.
7 = Square ramp with delay: Combination of function 2 and 6.
8 = Braking combined to the second power: Combination of function 5 and
6.
9 = Constant acceleration power (only in field-weakening range): With
constant electric power, the drive is accelerated further, or it is braked. The
course of the ramps depends on the load.
10 = Path calculator: constant path between the current frequency / speed and
the set minimum output frequency (P104).
11 = Constant performance power with delay: Combination of functions 2 and
9
12 = Constant acceleration power with delay (as in 11) with additional
chopper relief