Commissioning 41
5.3
Setting of the "Switch off contacts" in the shaft
Disconnecting tags for the high running speed "V3"
There are two possibilities to determine the length of the required brake path.
a) The length of the brake path can be taken
from the diagram figure 5.2. But you have to
observe that the indicated values are only
valid in case the factory setting for the
rounding R_NEG1 = 60 % and R_NEG2 =
90 % remain unchanged. Furthermore it is
assumed that the control transmits the
disconnecting tags to the control device
without delay.
Figure 5.2 Diagram of the length of the brake
b) The length of the brake path can also be
read
directly at the control device
. To do
this, all parameters influencing the
decelerating distance dispose of a special
function (see figure 5.3). If one of these
parameters is selected and changed, then
the calculated decelerating distance from
V_3 to V_1 is indicated instead of the
comment line when returning.
V_3 1.20 m
> Travel speed
V_3 1.20 m
> 1.20 m
V_3 1.20 m
[1.28][2.56]
P
P
change
Dist. S_31 (V_3 -> V_1)
Dist. S_21: (V_2 -> V1)
Figure 5.3 Special functions of the parameters V_1, V_2,
V_3, R_NEG1, R_NEG2 und A_NEG
Recommendation:
The disconnecting tag should - if possible - be set to a larger length of the brake path than that
determined in order to have free space for the optimization of the performance. Later on, it is possible to
abstain from a possible subsequent shortening of the disconnecting tag in the shaft, as with the
parameter /DECELERATE/S_DI3 it is possible to shift the disconnecting tag of the control device
internally up to the distance S_DI3.
In order to achieve a positioning run as short and equal as possible with "V1", the disconneting tags have
to be set with an accuracy of
+/- 1 cm.
Disconnecting tags for the positioning speed "V1"
The disconnecting tag for "V1" is to be set with an accuracy of +/-
1mm 5 cm
before flush.
Disconnecting tags for the average running speed "V2"
If necessary:
the disconnecting tags of for the driving command "V2" are set as far as possible from the flush. At first,
you only have to check whether the required length of brake path s_21 (figure 5.3) is smaller or equal to
the brake path available. If not, the speed "V2" is to be lowered in order to avoid an overrun at
commissioning.
In case of installations with
readjustment
, this has to be disconnected from the control at first in order to
be able to work without being disturbed.
1
2
3
4
5
0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
s [m]
V [m/s]
0.7 m/s2
0.9 m/s2
0.5 m/s2
