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Author Topic: Help! Panasonic Servo drive and ESS  (Read 8927 times)

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Re: Help! Panasonic Servo drive and ESS
« Reply #30 on: May 28, 2016, 08:12:22 PM »
Okay guys got the parts delivered and made the cable for the encoder, was extremely difficult to solder the 20pin connector with the cable being so stiff due to shielding but managed to pull it off, also got some shielded 4 core armored cable for the motor power connections, fired it up all works well just need to make the CN/IF connector so I can enable the servo with the 24v I/O, encoder signal is good the Error 22 has gone can't wait to see what kind of power this thing has  ;D ;D ;D

Offline Hood

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Re: Help! Panasonic Servo drive and ESS
« Reply #31 on: May 29, 2016, 03:09:06 AM »
Good to hear it is all working :)

Notice the left hand cable on the second pic just has two cores, is there not an Earth connection there?

Hood
Re: Help! Panasonic Servo drive and ESS
« Reply #32 on: May 29, 2016, 05:12:57 AM »
Yeah it is earthed u can't see it in the photo, the setup here is only temporary so the power wires are everywhere  :D, will be mounted to an aluminium plate in my cabinet.

Regards Lewis.

EDIT: needed to ask you hood, my 24v Psu is 600w 25amp, the data sheet says do not apply more than 50ma to the CN/IF, will this only draw the power it requires or will it get hungry and pop my driver, cheers!
« Last Edit: May 29, 2016, 05:18:56 AM by BoronNitride »

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Re: Help! Panasonic Servo drive and ESS
« Reply #33 on: May 29, 2016, 06:47:09 AM »
Ah ok.

Regarding the 50mA, could that be the max that is allowable on each output?

Hood
Re: Help! Panasonic Servo drive and ESS
« Reply #34 on: May 29, 2016, 06:59:39 AM »
Yes I just realised  :D, should be fine on the inputs then?
Pics below, Cheers.
Re: Help! Panasonic Servo drive and ESS
« Reply #35 on: May 29, 2016, 08:35:17 AM »
Okay the motor is turning enabled servo on with a relay ran the tuning in the drive and it turns, need to sort the noise out now believe as the motor gets up to speed with fast stops and reverses the spike errors the drive  :o

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Re: Help! Panasonic Servo drive and ESS
« Reply #36 on: May 29, 2016, 08:48:14 AM »
It is the outputs that have a limit as they are sourcing and if you connect a load to them that exceeds 50mA then it could blow the output.
Inputs do not have that problem as, although they are also sourcing, you are connecting them to 0V and thus the internal circuitry of the drive is controlling the current that will pass.

Regarding the fault, sounds like some tuning required.

Hood

Re: Help! Panasonic Servo drive and ESS
« Reply #37 on: May 31, 2016, 11:51:46 AM »
Thanks alot, spent a bit of time tuning the drive it works fine now, looking for a differential line driver for the step dir inputs now, wondering if this chip will do: SN75158P

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Re: Help! Panasonic Servo drive and ESS
« Reply #38 on: May 31, 2016, 12:39:56 PM »
This is the ones I have used in the past.
http://uk.rs-online.com/web/p/line-transmitters/0630875/

Hood
Re: Help! Panasonic Servo drive and ESS
« Reply #39 on: May 31, 2016, 02:45:50 PM »
Just ordered one, are there any extra components needed or is it just solder and go? Cheers  :D