IDX Manual (V1.15 / September 26
th
, 2008)
27
Copyright © 2005-2008, TRINAMIC Motion Control GmbH & Co. KG
5.9.2
Step
Description:
The Step signal controls the velocity and acceleration of the motor. The velocity depends
on the frequency, the acceleration on the change of the frequency. One step impulse represents one
microstep.
Calculation of rotations per second (refer to 5.8.1.11):
]
s
/
rotations
[
resolution
Microstep
Fullsteps
frequency
input
Step
]
s
/
rotations
[
v
Frequency:
The maximum Step input frequency is 350 kHz, aligned to the Direction signal. The
minimum logic ”0” time is 0.7 µs and the minimum logic “1” time is 2.0 µs. A step is triggered by the
positive going edge of the signal (switching off of opto coupler).
Maximum frequency at a duty cycle of 1 (“0” time is 2.0 µs and “1” time is 2.0 µs) is 250 kHz.
Function Table:
Extern
GND
open wire
V
COM
= 5…24V
Intern
HIGH
LOW
step pulse
direction
0.7µs min
2.0µs min
0.7µs min
t
DIRHOLD
t
DIRSETUP
Figure 5.9: Step and Direction Signal
5.10
Reset to factory default
If the module seems to function weird this could usually is caused by unintended settings. In this
case a reset to factory default might be useful. To do this switch off the module and short-circuit pin
1 and pin 3 of the free contacts for a 6-pin connector on the backside of the module. See Figure 5.10.
Turn on the module and switch it off again to remove the short-circuit. All settings are now at factory
default.
pin 1
(quadratic)
pin 3
Figure 5.10: Reset to factory default
