Jetter JM-105, User Manual, Page: 67 / 106

JetMove 105 7.5 2-Phase Stepper Motor
Jetter AG 67
The maximum phase voltage is calculated out of the DC link voltage as follows:
Thus, the maximum speed depends on the operating voltage. For this reason, the
operating voltage should, in general, amount to 48 V.
7.5.2 Acceleration and deceleration
If a stepper motor without actual position feedback is used, exceeding the maximum
possible torque of the motor must by all means be inhibited. Therefore, acceleration
and deceleration should be carried out by linear ramps.
A linear ramp results in constant acceleration of motor and load. For this purpose, a
constant motor torque is required. The degree of a possible acceleration depends on
the available torque.
Fig. 20: Acceleration via linear ramp
U
S
+V
MOT
2
------------------ =
n
t
Start Stop