I have several invertek drives. A few points :
5k or 10k pot is fine. Anything in that range will work.
As there are some differences between them, it will help us to know if this is an ODE2 or newer ODE3 series drive.
50Hz x (60 sec/min) = 3000rpm
You have a 4 pole motor so your max speed / frequency should be set to 25Hz aka 1500rpm
(or to exactly match your motor rating plate 23Hz / 1390 rpm).
I suspect your programming is wrong because of confusion over speeds in rpm and speeds in Hz.
Normally programming the ODE drives, I just start at parameter 1 and set them one at a time in order.
Once you get to p10, IF you enter a max speed in rpm instead of leaving it at zero (the default), all the other speed settings immediately change from Hz to rpm.
You need to go back to p1 and ensure that it has updated from 23 (Hz) to 1380 (rpm). You can then tweak p1 to 1390 if you want to get it exactly right. It's not very important.
The essential numbers to enter correctly are the motor rated voltage, the full load current and the max speed. If you do a reset on the drive first, most others can safely be left at factory default. P12 and p15 though are really important - see further down below.
If you want to set a minimum speed, choose one that is not too low, the motor is running at only a fraction of it's power at very low speeds so I'd choose one or two hundred rpm (300 rpm = 5Hz) and avoid running it all the way down to zero.
Study the manual. There are many different wiring diagram options for the controls. This is a strength of any high spec VFD like the inverteks but is makes them complicated to understand the first time you work with them. Control wiring options are shown in section 7.8 on p24 (of the ODE3 manual i'm reading). Pick the diagram that matches how your controls are wired then turn back to table 7.3 on p22, match the wiring diagram number in the rightmost column and check the other columns to figure out exactly which option you have. It depends whether you are using pushbutton or switches, have a reverse, etc etc
When you have matched the diagram and the switches, the first column of table 7.3 will tell you what value to enter in parameter 15. It is essential that this correctly identifies your control wiring scheme so the drive knows how to interpret the signals applied to the control wiring terminals.
If you have a pot connected, you will be running the drive in "terminal mode". This is selected by setting p12 to 0
In terminal mode, the drive is started, stopped etc from buttons, switches etc connected to the upper row of small control wiring terminals. Your drive is not weather sealed or dust proof. It is expected that the drive is installed in an enclosure for protection (ventilated or large enough for air circulation) and controlled from remote switches, it would not normally be run from the buttons on the front of the drive as these would be inaccessible inside an enclosure. They are used when programming the drive then left alone.
If you need to prove the drive with no external controls attached, you can set p12 to 1 or 2 and start / stop the drive from it's own buttons, but you need to connect a simple wire link from control terminal 5 to terminal 6. This is equivalent to connecting a pot turned to full speed. The motor won't spin without this link in place when p12 = 1 or 2.
This saga above is absolutely typical of a good VFD. If you want to work with / modify / fault find these things, you have to study the manual and understand it.
There are 28 pages in the invertek manual. There were 70 odd for an Omron Yaskawa drive I setup 10 days ago.
Some cheap chinese drives give you a page if you are lucky. That doesn't mean they are better.
Good luck
