beegee

Is the main relay used to switch power on the asynchronus motor you you can use it as a generator or is it used to pull power from the motor (used as a generator)? If one of both is the case you will have a sudden drop of speed when switching the relay on and a sudden rise of speed when switching it off. The reason is that you create a brake when you pull power from the windmill, and you release it when you open it. Putting the dead band higher would than solve your problem) regards

Hi, have you tried opening all the .chm files in C:\Program Files\OMRON\CX-One\CX-Programmer\.... maybe somthing is wrong with one of those files. not a problem I have ever had. I used to lock up while trying to connect, but that's solved...

you even have to use it differentiated all the time (@CTBL) If not you run into problems (I had them once some years ago on CQM1H)

It is one of the few programs still available separately from CX-One and it has a separate licensing system. I presume the update will be soon available in the automatic updates in CX-One...

We once had Siemens Belgium helping us to do such a setup with the CS1 at Ormon. At that time they could not set up the S7 too act as a slave according to the Profibus standards. They had to come back after contacts with Siemens Germany to solve the problem. I don't know if it has been solved or easier in the mean time but Siemens seems to have problems due to non documented extra features they have on Profibus that are not part of the Profibus standard.

for converting date and time to text just use the ASC. All values are automatically written as text not as binary if you choose to write to text file I the example you received a file gets written every 30000 values are logged. The filename is written as text and contains the date ( logXXXXXX.csv) and all the lines contain values like hour, min sec, and effective logging values. regards

check this out... http://forums.mrplc.com/index.php?autocom=downloads&showfile=713 best is to write them to EM or DM first and then write a lot of the data in block. You can use the ASC function to do what you want for the ascii characters. regards Beegee

The E-stop has no safety category because it is done in software. A sollution can be to use a contactor between drive and motor and use a safety relay with delayed contacts. You then use the E-stop to stop the motor (goes into baseblock) and then you can cut the power between Drive and motor at reset you will have to perform a clear drive and clear the following error (datum(0) in Trajexia) to eliminate the errors. I still have to check what's happening with power cuts but this could be a solution for Junma end safety issues while still having your encoder values

Yes I am, together with a Trajexia....

I would try to use a standard prox but adjust it mechanically (distance) so it only sees the stainless steel and detect the presence with another sensor Aluminum has about 2/3 of the sensing distance of stainless steel. So with bigger diameter proxes (30mm) you should have about 8mm wit Alunminum and 12 with stainless steel. beegee

That gives you an approximate position: the brake is only a static brake and the motor first stops using dynamic braking, which isn't controlled. so yo can know it (depending on the application) probably within 10 mm. I will still have to do an origin search afterwards. (we move on an 400mm axis with more than 2 m/sec) I'm stiil waiting for an answer about the safety class from Omron, but I fear I will have to be very creative.

Write an E-mail To Omron Netherlands/HQ Europe They are responsible for EMEA.....(also for the distributors) I' don't know the internal connections but maybe the probelm is that there is a connection L2C-L3 externally and somewhere this generates problems.

you need to connect L1/L2 and L1C/L2C RED LED = CHARGE ON POWER BOARD GREEN LED = CONTROL CIRCUIT LIVE "DON'T OPEN THE DRIVE TO CIRCUIT BOARD LEVEL" I think you need to read the manual or contact Omron if I see the other questions...

use L1 and L2 for Line and neutral

As far as I recall the numbers are printed on the servo (embossed in the connector)

Also 100% efficiency of an switching power supply is a myth. Standard switching power supplies have a power factor of about 60% due to the fact that they use a rectifier at the input. The better ones have a power factor correction and this takes it up to 85-95%. This PF is due to the fact that higher order harmonics are important even while the cos phi stays close to 1 (only first order harmonic) In high power applications like inverters they go over to 12/18 pulse rectifiers and DC reactors to improve that power factor. If you take Input-output insulation you get somthing like 100Mohm resistance and 3KVAC dielectric strength (example from S8VS from Omron)

PWM is not available as an input on for instance Yaskawa inverters (I don't know about Mitsubishi) You could put a filter over the PWM and use that but I like to keep those things simple. Again, it depends very much on the configuration you use... we use pulse train on a CIMR-V7 for instance.

great job

well, it is not applied that often since price is a sensitive issue in this market.

interesting idea... I'll keep it in mind...

if the inverter supports PWM ... again RTFM

the anti ssway takes into account the length of the heigth at which th eload hangs and the weigth. Based on those two, the speed and the deceleration, You can calculate the sway easily (physics) You stop then in two movements: one to stop the crane chariot (sway starts) and then a second move (fast) that puts the crane chariot again above the load when it is at its extreme position of the sway. since the operator only looks at the load and not at the chariot it just looks like a slightly longer deceleration time so something like: running at speed stop chariot calculate the sway amplitude move forward over half the amplitude and stop

I remember that card... it was the time everything at omron had somthing fuzzy, TC's PLC cards, ...;that trend has changed somehow. The soft is not written by Omron or Yaskawa but some Swedish or Norwegian company. We also has a belgian university spin off who made this in a plc/pc connected to the inverters

no just plain physics... (it is a pendulum so you can calculate everything but you need to know the length of the cable running down. The weight you know from the hoist inverter)

I rarely ground the 0VDC because you loose your galvanic insulation from 240 to 24V. The earthing of 24VDC (either + or -) comes from the electronics and automtive guys. In electronic schematics the - is typically grounded and cars put either the + or the - to the frame to reduce wiring. If I put the 0VDC to ground I do this using a frame/signal ground (separated from the power cable earthing)