maxon motor
4-Q-DC Servoamplifier ADS 50/5
Operating Instructions
4.3
Adjustment of the Potentiometers
4.3.1
Pre-adjustment
With the pre-adjustment, the potentiometers are set in a preferred position.
ADS units in original packing are already pre-adjusted.
Pre-adjustment of potentiometers
P1
IxR 0
%
P2
Offset 50
%
P3
nmax 50
%
P4
Imax 50
%
P5
gain 10
%
4.3.2
Adjustment
Encoder mode
DC-Tacho mode
1.
Adjust set value to maximum (e.g. 10 V) and turn potentiometer P3 nmax
so far that the required speed is achieved.
IxR compensation
2.
Set potentiometer
P4
Imax
at the limiting value desired.
Maximum current in the 0 ... 10 A range can be adjusted in linear fashion
with potentiometer
P4
.
Important: The limiting value l
max
should be below the nominal current
(max. continuous current) as shown on the motor data sheet and may
not exceed 5 A continuously.
3.
Increase potentiometer
P5
gain
slowly until the amplification is set large
enough.
Caution: If the motor vibrates or becomes loud, the amplification is ad-
justed too high.
4.
Adjust set value to 0 V, e.g. by short circuiting the set value. Then set the
motor speed to 0 rpm with the potentiometer
P2
Offset
.
In addition, only in the case of lxR compensation:
5.
Slowly increase potentiometer P1 IxR until the compensation is set large
enough so that in the case of high motor load the motor speed remains
the same or decreases only slightly.
Caution: If the motor vibrates or becomes loud, the amplification is ad-
justed too high.
Current controller mode
1.
Set potentiometer
P4
l
max
at the limiting value desired.
Maximum current in the 0 ... 10 A range can be adjusted in linear fashion
with potentiometer
P4
.
Important: The limiting value l
max
should be below the nominal current
(max. continuous current) as shown in the motor data sheet and may not
exceed 5 A continuously.
2.
Adjust set value to 0 V. Then set the motor current to 0 A with the poten-
tiometer
P2
Offset
.
Note
•
A set value in the -10 ... +10 V range is equal to a current range of approx.
+I
max
... -I
max
•
Configured as a current controller,
P1
,
P3
and
P5
are not activated.
6
maxon motor control
July 2009 Edition / Doc. No. 538837-07 / Subject to change
