Service Guide MINI SPEED
Service Guide MINI SPEED
Test point
zero signal
Test point
Current signal
Eichung nur
fuer
qualifiziertes
Personal!
2.1 Trimmer adjustment
Adjustment
VEL
The vel trimmer fine tunes the velocity
command input sensitivity . It provides a
range of +/- 20 % to fine tune the velocity
command input sensitivity ;for increase
speed turn potentiometer clockwise and
in anticlockwise sense for reduce itself.
BAL
Offset calibration. This potentiometer
allows offset calibration on the input
reference.
Max reference corr/- 200 mV
KV
The dinamyc response of the motor depends from this trimmer; for increase the gain turn
the KV potentiometer in clockwise sense.
DER
Derivative adjustment.Turning the DER trimmer in clockwise the overshoot is reduced.
ACC
The solder bridges allow insert the acc/dec function.(JP1-JP2-JP8 )
With anticlockwise turn(ccw)we increasing acc/dec function between 0.1/1 sec.(correspond
10 v reference)
We can increase or reduce max time of acc/dec opening JP1 solder bridge and inserting
a resistance in the personality header.(see chapter 4.3 adjustment)
N.B.
Usually,the amplifier,is provided with the ACC/DEC function disabled.
If we insert RIP resistance on the personality header
between 5-10 pin,we can limit peak current.
Below is reported a table with re-entry current.
PEAK CURRENT CALIBRATION
ACC/DEC TIME CALIBRATION
JP1 JP2 JP8
FUNCTION
RANGE NOTES
acc/dec off
acc/dec on
acc/dec on
Standard adjustment
Adjustable by acc potent.
Adjustable by acc potent.
0 sec.
0,1 / 1 sec.
By ramp resistance
Res RAMP
680K 820K 1Mohm 1,5Mohm 2,2Mohm 3,3Mohm
Time
0,2 s - 2,6s 0,3s - 3,2s 0,4s - 3,9s 0,6s - 5,7s 0,8s - 8,6s 1,4s - 13s
Usually,these calibration,are made from the factory.
If we have very high load inertia (report 3:1 between
inertia load and inertia motor) we must modified KV
gain “KV”potentiometer and increasing the derivative
function “der potentiometer”.
The calibration must be made with load,connected to
the motor.
Apply square wave(0,5 hz +/- 1v) at the input
reference.
Connect at tachogenerator input an oscilloscope with
memory (ground probe must be connected at zero
signal).
Then turn the trimmer der in anticlockwise sense.
Before look for safety space during alternative mote.
Apply power to the amplifier and enable it machine
will move itself up and down.If possible increase
voltage to +/-2volt when the oscilloscope signals on
monitor making a comparation with the wave shape
on following page and do as suggested.
DYNAMIC CALIBRATION
Calibration
for qualified
personnel !
Taglia/RIP(Kohm)
-
220
150
100
82
68
56
47
39
33
27
18
02/04
4
3.7
3.6
3.3
3.2
3.1
3
2.8
2.7
2.5
2.3
2
04/08
8
7.3
7.1
6.7
6.4
6.2
5.9
5.6
5.3
5
4.6
4
08/16
16
14.5
14
13.2
12.7
12.2
11.6
11
10.5
9.8
9.2
8
10/20
20
18
17.4
16.3
15.5
15
14.4
13.7
13
12.1
11.4
10
14/28
28
26
25
23.5
22.6
21.8
20.8
19.8
18.7
17.5
16.5
14
20/40
40
37.8
36
34.1
33
31.7
30
28.9
27.1
25.8
23.8
20
25/50
50
46.9
44
41.7
40.3
38.5
36.9
34.9
33
31
28.9
25
Summary of Contents for Minispeed MS 140
Page 1: ...ENGLISH...