Stepper control direct from PLC Digital Outputs?

girevik

Member
G
Join Date
Nov 2005
Location
rus
Posts
179
Hello,


as I know, usually special modules are used to control stepper.

So i'm wondering why not just connect stepper to the PLC's digital outputs and control it by the PLC's program? what disadvantages? Is that way ever used or it's not allowed?

I have tried that way with my 5 wire (one is common) stepper and it seems working.

thanks and sorry for my ignorance.
 
that was my fault. I did not say that I need pretty slow rotation of the stepper, about 5-10 steps per second... so any, or almost any, PLC will work there.

so limit of the maximum speed is the most important disadvantages, and if I dont need fast speed, I can use stepper connected directly to the PLC?


thanks
 
If the outputs can supply the current needed for the steppermotor and the steppermotor is rated for 24VDC: yes you can connect it directly to the outputs. I have even done it with small relays between the outputs of a Simatic S5-100U and the motor. I think (it was a while agoo) the fastest speed I got with that setup was about 1 rpm with a 720 steps/revolution motor.

Kind regards,
 
jvdcande said:
If the outputs can supply the current needed for the steppermotor and the steppermotor is rated for 24VDC: yes you can connect it directly to the outputs. I have even done it with small relays between the outputs of a Simatic S5-100U and the motor. I think (it was a while agoo) the fastest speed I got with that setup was about 1 rpm with a 720 steps/revolution motor.

Kind regards,
Click to expand...

thanks for the info. very useful.

my stepper is rated at 12VDC so I'm using additional powersupply... My PLC's output are relays, I know it's not the best choice for running stepper, but this PLC is for education purposes only and will not run for a long time...

thanks again
 

Similar Topics

M
Stepper Motor control issues with Micro850 and CCW
I'm controlling an Applied Motion HW23-601D using a Leadshine EM542S connected to a 2080-LC50-48QBB, using CCW, and experiencing some weird...
Replies
2
Views
612
MikeBriggs
M
N
Stepper Control Direct05 Logic D0-05DD
Hi All, I am looking for some help on a little project that I have inherited (Landed in my lap) 🔨 We have a 5-position index table that...
Replies
0
Views
633
Noob_MW
N
Q
Allen Bradley CompactLogix L33ERM - Stepper motor control using TB6600 driver
Hello everyone, It's been a while I haven't dive into PLC programming (more than 5 years) and I wasn't doing it alot as programmer. I am now...
Replies
1
Views
1,841
QuebecoisSti
Q
W
Compact Logix Stepper Motor Control
Hello, I’m looking to control a bipolar stepper motor using a stepper motor drive and a compact Logix PLC. Can anyone point me to how to program...
Replies
9
Views
3,630
RClem
RClem
S
Using RS500 to control a stepper motor
The company I work for recently bought stepper motors and the appropriate parts / expansion card to control them. I, however, have never used...
Replies
2
Views
1,227
Geospark
Geospark
Back
Top Bottom