nord NORDAC SK 200E, Руководство пользователя

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5.2 Parameterising – Basic Parameters
BU 0200 GB Subject to technical alterations 95
Parameter
[factory setting]
Setting value / Description / Note Device Supervisor
Parameter
set
P108 Disconnection mode
S P
0 ... 13
[ 1 ]
This parameter determines the manner in which the output frequency is reduced after "Blocking"
(controller enable
 low).
0 = Voltage block:
The output signal is switched off immediately. The FI no longer supplies
an output frequency. In this case, the motor is braked only by mechanical friction.
Immediately switching the FI on again can lead to an error message.
1 = Ramp:
The current output frequency is reduced in proportion to the remaining deceleration
time, from P103/P105.
2 = Ramp with delay:
as with ramp, however for generational operation the brake ramp is
extended, or for static operation the output frequency is increased. Under certain
conditions, this function can prevent overload switch off or reduce brake resistance power
dissipation.
NOTE:
This function must not be programmed if defined deceleration is required, e.g.
with lifting mechanisms.
3 = Immediate DC braking:
The FI switches immediately to the preselected DC current <
(P109). This DC current is supplied for the remaining proportion of the >DC brake time<
(P110). Depending on the relationship, actual output frequency to max. frequency (P105),
the >DC braking time< is shortened. The time taken for the motor to stop depends on the
application. The time taken to stop depends on the mass inertia of the load and the DC
current set (P109).
With this type of braking, no energy is returned to the FI; heat loss occurs mainly in the
motor rotor.
4 = Constant brake distance:
The brake ramp is delayed in starting if the equipment is not
being driven at the maximum output frequency (P105). This results in an approximately
similar braking distance for different frequencies.
NOTE:
This function cannot be used as a positioning function. This function should not
be combined with ramp smoothing (P106).
5 = Combined braking:
Dependent on the actual link voltage, a high frequency voltage is switched
to the basic frequency (linear characteristic curves only, P211 = 0 and P212 = 0). The
deceleration time is retained where possible (P103).
 additional motor warming!
6 = Quadratic ramp:
The brake ramp does not follow a linear path, but rather a decreasing
quadratic one.
7 = Quadratic ramp with delay:
Combination of functions 2 and 6
8 = Quadratic combined braking:
Combination of functions 5 and 6
9 = Constant acceleration power:
Only applies in field weakening range! The drive is further
accelerated or braked with a constant electrical power. The ramp depends on the load.
10 = Distance calculator:
Constant distance between current frequency / speed and the set
minimum output frequency (P104).
11 = Constant acceleration power with delay: Combination of functions 2 and 9.
12 = Constant acceleration power with delay (as 11) with additional brake chopper support
13 = Switch-off delay