CLICK Restart
CLICK Restart
(OP)
I have a complex multiple state-machine PLC controlling a psychotic machine. Currently certain places can't be recovered from short of a power-cycle. The power cycle is torturous because several servo drives take forever to boot-up and they don't need to be rebooted. So, recovery takes about a minute, which is way too long to keep the production blood pressure's down. Is there any way to make a CLICK restart, essentially a warm-boot? Any suggestions welcome.
Keith Cress
kcress - http://www.flaminsystems.com





RE: CLICK Restart
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RE: CLICK Restart
RE: CLICK Restart
Any switching from run to program to run on a plc will always cause a rehome sequence on servos. I would look at this part of program and change the program to see if you can rehome by slight movement. But also, if the plc loses some count that the servos use, you might have to save this during a switch to program in memory.
RE: CLICK Restart
RE: CLICK Restart
John2025; You make a good point. I wish the HMI C-More maker included this.
controlsdude; You are correct, if absolute encoders are not present. If you re-boot the servo drives you will indeed need to re-home them before they accept motion commands. This is part of why I'd like to just reboot the PLC as that avoids the slow and painful reboot of the drives themselves. I cannot issue the drives ANY commands for about 35 seconds after boot-up. They must be running windoz vista or something.. :) Once the PLC boots, it has to wait 33 seconds so the drives will listen, then it orders up HOMEs which take, worst case, 12 more seconds. I can live with 12 seconds, it's the 35 that make people think the machine is dead.
John2025; Oh? Indeed. I'm using the same AKD drives. I'm using a standard one and a completely optioned out BASIC one. I love every single thing about them except the absurdly long boot-up times. But alas it's not the homing as I've mention but the boot time that is getting me.
Keith Cress
kcress - http://www.flaminsystems.com
RE: CLICK Restart
John
RE: CLICK Restart
We can't pass emails on this site but whenever someone has a tag-line link you can bet there's a way to contact them via that.
Keith Cress
kcress - http://www.flaminsystems.com
RE: CLICK Restart
RE: CLICK Restart