Hitachi VFD WJ200 questions

[bpwoodworking]

I recently bought an older Martin T23 spindle moulder (shaper). This machine has a spindle with oil bath style bearings, they require a pump. The previous owner bought the machine with some sort of makeshift pump going along with it. So I plan to replace that with a Bijor or similar pump which runs on 120v or 230v.

I'd like to activate the pump with a relay that kicks on when the VFD is in the run condition. I'm unfamiliar with wether or not it is possible to have the VFD operate a relay when turning the motor on. Anyone familiar with doing something like this?

The machine is currently setup to run with a 2 speed motor. I plan to replace the current motor controls with the hitachi VFD and run high and low on push buttons. Its my understanding that with a dual winding motor the same effect is created by running the VFD on the high speed windings and running them at 1/2 speed when desired.

I plan to run large tooling on this machine so it is desirable to be able to fine tune the speed more so than the four options available with the factory setup (two speeds and two pulleys).

Does this sound like a reasonable plan?

I run a couple other machines on Hitachi WJ200 units and I like them but have not gotten as detailed with the controls. So far I've set them up to dial in start up and shut down speeds and utilize a standard on-off/safety stop circuit setup.

 

[RTM]

Looks like page 4-51 of your manual tells you how to wire a relay in. Following pages tell how to program it in.

https://www.hitachi-iesa.com/sites/default/files/supportdocs/WJ200_Instruction_NT325X.pdf

 

[micromind]

It's pretty easy to do but you might need ti use another, larger relay to operate the pump. The output relays on VFDs are low current and low power and might not be able to handle the pump directly.

You'll also need to program the output relay to close (turn on) when the VFD is running.

 

[bpwoodworking]

Sounds good, much appreciated!