Reply with QuoteYes the 4 channels A & B also Z marker if you needed it, look for line driver rather than open collector.
Al.
It says differential. I'll try to post a copy of the spec sheet. The 1000 count encoder was out of stock earlier today, but shows in stock now. Does differential mean it has a +a/-a/+b/-b channels?
thanks
i_r_
Yes the 4 channels A & B also Z marker if you needed it, look for line driver rather than open collector.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
So thats not the one I need?
i_r_
edit.
trd-sh1000-vd says line driver (diff)? that what I need?
OK, it looks like VD is line driver, BD is open collector.
So you should be OK.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
Encoder is ordered.
Thanks Al
i_r_
I'm almost there.
Got the vfd installed and running in manual. Hooked up the wiring as close as I can figure. Programmed the vfd parameters.
When I give it a m3s100, I get voltage on the 0-10v output and my indicator light comes on, but the spindle doesn't come on.
I'll take some pictures and get some documentation.
have fun
i_r_
Probably either it is not in external run, or the proper input is not activated, fwd/rev etc via the M3.
I would test it manually in the external method first, with a pot on the +10v and a switch on the FWD, to see if it operates OK up to that point.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
I just found another learning curve issue. The 3 hp vfd is rated for 2.2KW. My 3hp motor is rated 3.4KW.
Do I need to send this back and get the 5hp vfd which is rated 17KW?
What is this and what will it effect?
Thanks
i_r_machinist
Look at the current rating of the VFD and of the motor.
Take this as the primary criteria.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
Do I connect my 0-10vdc from the breakout board to the FM+ and Com terminals?
i_r_
I would say you connect the 0-10V to the Com and AIN terminals.
Also use a N/O relay to turn on the spindle with the S1 and +24 terminals. This is controlled by the M03 command
Larry, you're right, that is the correct wiring. BUT, I have something else wrong. When I turn on the spindle, it will start to ramp up and the bob will go into estop. On the diagnostics page you can see a red light flash on output 1. I don't get an error on the vfd readout. It doesn't matter what rpm I give it. I'll shoot Bob an email in the am.
Also, I was looking at the tuning on the campbell board, and can't find vr3 and vr4. Also can't find the pulley setup on mach3.
But hey, We made some progress!
thanks
i_r_
The BOB is probably picking up electrical noise on one of the inputs (limit,reset etc) and tripping. A VFD outputs a lot of noise on the output cable.
Would a 2ohm resistor between the relay and the 24vdc in reduce the noise? My battery went dead on my voltmeter last night, but I was showing higher than 24vdc before it did.
thanks
i_r_
Measure the analogue input to the VFD. If this is ramping up to 10v then this is the source of the problem.
It may not be related, but you should use tightly twisted cables for the 3ph from VFD to motor.
Also make sure the ground is in place to the VFD and the motor frame.
24vdc relays are not that critical to voltage, you can in fact use 24vdc non-regulated or non-capacitor smoothed, they run on 24dc with 120cycle ripple with no problem.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
Also a 3phase line reactor ( on the output between VFD and motor) will greatly reduce the square wave harmonics generated by the VFD.
Make sure the 3ph power cable isn't near the wires that run to the bob.
Also did you Chassis ground the 25pin printerport connector on the BOB ? You should.
"Also did you Chassis ground the 25pin printerport connector on the BOB ? You should. "
Not sure how I would do that. I assumed that the 25 pin connect would be grounded. Got a new battery for the volt meter.
I'm going to look up chasis grounding.
I'm going to go measure some voltages.
Do these line reactors just come in one size? I'll have to order them.
thanks
i_r_
Current rating.Originally Posted by i_r_machinist
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
The signs seem to be pointing at the 0-10vdc. Unhook those two wires from the bob and give it a m3s1000 and the relay kicks in.
I can hook a 9v battery with a pot on it up to the two signal wires and the spindle kicks on and ramps up and down without an estop.
But I don't show any voltage across the sig and vgrnd terminals (on bob) while this happens. I would expect to see a voltage.
With the two signal wires connected and the S1 and 24vdc disconnected from the relay, I show voltage across the sig and vgrnd...???
I've been looking at the schematic. I don't see any voltage across the two because without the vgnd connected to the vfd, there is no ground...
I know you guys must think I'm a dumbass, but I'm actually very good at what I do. This isn't what I do.
have fun
i_r_MACHINIST_who_are_humbled_by_electronics_techs
Isn't the VFD BOB output J2 Sig & Ret?
These two should show the VFD control voltage, and they would be connected to COM & AIN, as Larry said.
Is it this way and still not working?
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
