
Start-Up IP 266
The following values are computed on the basis of this data:
Table 8-2. Formulas for Computing the Machine Data
Maximum velocity (speed)
V
max
[
mm
/
min
] = x
g
· n
10V
· ü
Take the time from the commissioning report
for the power section you are using.
Maximum deceleration rate b
max
V
max
[
mm
/
60s
]
b
max
[
mm
/
s
2
] =
t [s]
V
max
b
max
[
mm
/
s
2
] =
t · 60
Maximum following error s
V
max
[
mm
/
60s
]
s [mm] =
Kv [
1
/
s
]
V
max
s [mm] =
Kv · 60
The following data is computed from the results of these calculations
Kv (gain) factor
Kv
[ 1
/
s
]
The gain factor depends on the design, dynamics
and disturbance variables (load variations)
affecting your drive. An optimum gain factor
cannot be ascertained until the system is actually
put into operation. A very low value (1 to 2
1
/s)
should be selected for start-up in order to avoid
damage.
mm
s
2
The factor ü must be taken into account only
when it is not part of x
g
.
8-8
EWA 4NEB 812 6057-02
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