Installation
2-14
SIMODRIVE base line A Start-Up
2.6.1.5. Drift compensation
-
Drift potentiometer
General
The drift is compensated for n
set
=0 using a potentiometer.
Control range: +/-45mV.
2.6.1.6. Tachometer
-
Potentiometer
Setting range
The actual drive speed for +/-10V speed setpoint can be varied by the
rated speed in the range: 0.6 n
rated
≤
n
actN
≤
1.8 n
rated
.
The following setting ranges are obtained for a
±
10V speed setpoint
according to the rated speeds.
n
motorN
1)
n
motorN
2)
2250
2250
6000 [RPM]
6000 [RPM]
1500 RPM
4500 RPM
n
rated
2
)
1)
rated motor speed;
2)
rated speeds which can be set using the closed-loop resolver control.
Fig. 2-7 Setting range for a
±
10V speed setpoint
When the speed setpoint is reduced, the setting range is also
appropriately reduced. We recommend that the motors with a rated
speed of 2250 RPM are operated using a
±
9V speed setpoint, in order
to limit the selectable maximum speed.