Emotron CDU/CDX 48-026 [46/82] Parameters and variables of the speed and position controller

Emotron CDU/CDX 48-026 [46/82] Parameters and variables of the speed and position controller
EMOTRON DSV 5445/5444
Page 46
Emotron 21.04.09
Optimum for t Rotor time constant
Alter t starting with the start value with +/- 10 % in increments
The motor current should reduce. If t is too small or too large, it increases again. t is optimal at minimum
current.
Optimum for F0 Rotor flux
Set ‘t’ Rotor time constant to the optimum value that you have determined above.
Attempt to reduce the motor current further by altering F0 = start value with +/- 10 %.
The optimum is minimum current.
The absolute optimum of both parameters does not necessarily mean the best possible run behaviour. Try
small deviations in parameter ’t’ by approx. (+)/(-) 10 % so that the running behaviour becomes better also
during acceleration.
8.2.7 Parameters and variables of the speed and position controller
The meaning of the P-part and I-part (the so called divided ‘I-part’ for increasing of the running comfort at the
time of the load change from brake to motor torque and contrary) is shown in the following.
F3 P-part stop and hold takes effect on standstill at the end of run only (before the drop-out of the
brake)
F6 I-part start to end takes effect only during the distance „F26“ (that is in the flush range)
F7 P-part start to end takes effect only during the distance „F26“ (that is in the flush range)
I I-part run (normal) takes effect only on LIFT7SZ and "old" command programs during the run
K P-part speed run takes effect on all ranges, excepting the flush range (that is „F26“)
0E1C I-part stop and hold takes effect on standstill resp. after the under-run of the step 0E12
0E1E I-part run (new) takes effect during the run above the threshold 0E12
8.2.7.1 Remarks on parameter overview (normal winch, “40MHz” devices)
Parameters i, k, F6, F7 are to be set at the maximum value so
that:
kAnteil
iAnteil
< 150
.
Set “E1E“ to min. 40 and “k“ to min. 600 and run a short distance with “Vn“ or
“Vi“. If the motor does not start to buzz, increase “k“ up to 20% below the
value that causes the motor to buzz. Adjust “E1C“ to a smaller value such
that k/E1C<150 is just attained. Transfer "E1E and K" into parameters “F6“
and “F7“. If the lift does not run smoothly double "E1E". High numerical
values for "k" and “F7“ cause high P-gains in the DSV. .Low numerical
values for “E1C“ and “F6“ therefore cause harsh integration in the controller.
Recommendation:
E18 = select a small value at first (e.g. 20),
then increase in small steps (see
Chapter Braking distances).
E20 = Standard value 200
E22 = should be twice as large as E18.
Gear translation ratio = 69:2 to
increase the accuracy, 345:10 is also
permitted (with epicyclical gears).

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