Applied-motion STM23R-2ND Bedienungsanleitung PDF herunterladen (Seite 22)

STM23R Hardware Manual

920-0056C

5/5/2015

Step 6: Step Pulse Noise Filter

Just when you thought there couldn’t be any more to know about step signals, we present one more seing for

your consideration. Electrical noise can aect the STEP signal in a negative way, causing the drive to think that

one step pulse is two or more pulses. is results in extra motion and inaccurate motor

and load positioning. To combat this problem, the STM23R includes a digital noise lter

on the STEP and DIR inputs. e default factory seing of this lter is150 kHz, which

works well for most applications. is is set by moving switch 5 to the ON position.

However, as discussed in Step 4, if you are operating the STM23R at a high number

of steps/rev and at high motor speeds, you will be commanding the drive at step rates

above 150 kHz. In such cases, you should set switch 5 to the OFF position as shown

below.

Your maximum pulse rate will be the highest motor speed times the steps/rev. For example, 40 revs/second at

20,000 steps/rev is 40 x 20,000 = 800 kHz. Please consider this when deciding if you must increase the lter

frequency.

Self Test

If you are having trouble geing your motor to turn, you may want to try the built-in self test. Anytime switch 4

is moved to the ON position, the drive will automatically rotate the motor back and forth, two and a half turns

in each direction. is feature can be used to conrm that the motor is correctly wired, selected and otherwise

operational.

STEP CW/

STEP CCW

STEP/

DIR

150

KHZ

2.0

MHZ

OFF

SELF TEST

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Applied-motion STM23R-2ND Bedienungsanleitung Seite 22