Teco 7300 motor speed controller

[Olaf KundrusParticipant @olafkundrus84366]

Hi to all I’m new to this forum and need some help,

I have bought about 1 years ago a new motor and a so called “union graduate remote pendant” for my Myford super 7 lathe. The Teco 7300CV Inverter I had bought some time be for.

I found now the time to install all this to my Myford and it works all fine FWD and Stop are working, BUT the Revers switch on the pendant will not work.

I put all the parameter I got with the remote pendant in to the Teco 7300CV but no Revers.

Revers is enabled set to 0000

Set to 3- wire control 0002

Parameter 5-00 0000

Parameter 5-01 0001

Parameter 5-02 0002

(But in the Manuel is written “As 3 wire control mode is selected, the terminal S1, S2 and S3 is not controlled

by 5-00, 5-01 and 5-02.”!)

When I switch from the Teco it self in to REV it will work fine.

If I push the Rev from the remote pendant the rev light will blink on the Teco ( only as long as I press the Rev) but nothing will happen.

If I press first the REV and than the FWD button and hold the REV button the motor will start running in REV. When I release the REV button the motor will stop running.

I hope some one can help me to solve this problem. I add some photos from the wiring of the Teco and the pendant.

The white cable is 24V (PNP on the Teco selected)

yellow is S1

brown is S2

blue is S3

Thanks Olaf

[Olaf KundrusParticipant @olafkundrus84366]

[BazyleParticipant @bazyle]

Olaf,

How did you decide on the wiring to the connector? Was the pendant already wired when you got it and you only wired the 7300 end?

I so not have one of these machines but am looking at the guide on the internet.

The quick start guide for the 7300 does not show 3 switches so I need to read the full manual perhaps. It shows a design for just 2 switches. It looks like you have the brown wire in the wrong place and the white wire should be in S2. I expect the brown wire to go in the position covered by the yellow wire in the picture if that says”com”.

However your wiring may be for a different setting of the controls.

At the moment the manual pdf is unreadable on my computer. I will have to try another computer later tonight.

[Olaf KundrusParticipant @olafkundrus84366]

Hi Bazyle,

the pendant came already wired to me. And than I wired it to the 7300EV NOT EV like it was described in the instruction what cam with the pendant. The guy how sold me this told me that the instruction is made special to connect the 7300CV to this pendant. Ufortunately I can not get in contact with him to ask him. I think the COM, AIN and 10V are for the speed regulator and the 24V, S1,S2,S3 are for FWD, Stop and REV .

Thanks Olaf

[BazyleParticipant @bazyle]

I do not think it is correct to use 24v. Why have you used this? The pdf for the manual will not work for me off their website so I cannot see the part about wires for the switches.

[BazyleParticipant @bazyle]

I have now been able to open the manual pdf by getting it from the Teco.co.uk website. For others with this device note the parent company site pdf is broken.

David, can we rename this thread “Teco 7300 motor speed controller” for future searches?

 

I now understand you are in PNP mode and can use the 24v connection.

I think the unit needs a special set of switches. This may be what you have in the pendant but we need to check ( I think it is not because of the way you say it behaves).

what is required ( page 4-23) is this:

a) run switch : push button temporary action.

b) stop switch : normally closed, push to break contacts which can be wired in series with other emergency stop buttons if needed.

c) toggle switch or latching push switch that has two states on and off.

 

Can you disconnect the Yellow, white, blue leads and measure accross each switch to find if it is open or closed when pressed and whether it latches (stays on).

 

I think you have a) and b) but not c) and that is why you have to hold the reverse button down so that it is like a latching switch.

Your switch a) which you have connected to the FWD button is actually the RUN button and you get forward by default because switch c) is open and that selects forward direction.

If you hold c) on then it selects reverse when you hit a) RUN. But when you release c) it stops as a safety action.

 

[Olaf KundrusParticipant @olafkundrus84366]

I have to see if I find some thing to measure.

Meanwhile I got in contact with John from NEWTON TESLA ELECTRIC who sold me the pendant, he will also working on this problem.

Olaf

[Olaf KundrusParticipant @olafkundrus84366]

Sorry but I have to say I have no possibilities to make measurement. Also I no absolute nothing about electric and would not know how to take this measurements.

But you have to remember that it is to 3 wire control mode is selected. What you can see also on page 4-23. What ever this means.

Also in the Manuel is written “As 3 wire control mode is selected, the terminal S1, S2 and S3 is not controlled by 5-02.”!)

Olaf

[BazyleParticipant @bazyle]

I hope the man at Newton Tesla Can say how the switch works. I see on his website a different switch unit sold for the Teco so he should understand what is required.

I notice the one you have is sold for the union graduate lathe. This is a woodworking lathe so would not normally need to reverse. Perhaps that is why it is set like this, so you only reverse for a few seconds on that lathe.

 

 

[JonParticipant @jon]

Is it wired different to this?

http://www.drivesdirect.co.uk/Images/Digital%20Inverters/WEB-CV-7300-2P5-201-CONNECTION-DIAGRAM-WITH-START-STOP-FWD-REV-+-SPEED.jpg

 

I did have one before the two MA7200’s

[BazyleParticipant @bazyle]

Unfortunately it has a different switch box with different colour wires.

[Olaf KundrusParticipant @olafkundrus84366]

Bazyle is right as you can see on my pictures.

[Olaf KundrusParticipant @olafkundrus84366]

John sent me yesterday a mail “the wiring on the remote needs to be altered with the addition of a second normally-open contact block clipped on to the rear of the existing contact block on the REVERSE button.” The contact block is on the way to me than we will see if its work.
Thanks Olaf

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