Let's consider the motor nameplate Adam just posted. The two important values we need to consider is the voltage...in this case 220V, for this motor its the maximum voltage to be supplied to the motor.
10A is what we call the motor full load current...IFL. This is the maximum allowable current to be consumed by the motor, that is dependent on the load. You must adjust the protection levels to make sure the power to the motor is removed if the load continues to exceed this 10A value.
Yes, it's 3 phase, but cos phi is another way of signifying power factor. So PF is only .75 for that motor, not 1.
So if that motor was 100% efficient (it's not) it would be around 2.9 kW.
Load from the wall (single phase) for a real 4kW motor will probably be between 25 and 30 A. For a 10A motor (2.2-2.6 kW) more like 15-20 A.
So how do I perform a like-to-like comparison of these motors that seem to be obviously overstating their output capabilities?
I think I have to assume the following, correct me if I'm wrong:
1 - 220v input to VFD
2 - VFD output to 3phase and based on the VFD above it has a working range of 304V-456V (Gerry, I think this still fits in the original HUANYANG units that most people have had success with)
G540, Rack and Pinion Drives-X/Y axis, 1/2-Ball Screw-Z Axis w/THK HSR 25 Linear Slides, Steppers KL23H2100-35-4B, Power Supply-KL-600-48
I think that working range is the bus voltage, which is DC, based on the input AC voltage * sqrt(2). So normally, without the motor running, with 220V in you'll have a bus voltage of about 311V. The reason for the higher voltage range is in braking, the motor acts as a generator and will push the bus voltage above the supply voltage.
Or it may be that it's just a stat from the 380V version of the drive and it ended up in the description accidentally (more likely, I don't think many 220V drives can tolerate much beyond 400V bus voltage.)
You are confusing yourself by play with numbers that are not possible, your VFD 3Ph output Voltage can never be more than the input supply Voltage
Get one thing correct to start with NA voltage is 240V and can +/- 5v ( not 220V ) so you VFD input voltage will be what ever your supply Voltage is, which will be around 240V, the output voltage is controlled by ( 2 ) Parameter that is set to what ever your spindle Voltage is which most spindles coming from China are 220V so the max output voltage will be 220V to suit your spindle
Mactec54
220/240... I'm still stuck trying to evaluate spindles based on bogus numbers given by the manufactures.
If the spindle shows 10amp and 4kw using 240v I hear everyone saying no way, so how do I evaluate them?
Is the calculator that the website is using wrong?
Based on a 6amp 2.2kw 220v motor the calculator seems to get it correct as well as the 10amp motor? I realize this is no load.. etc.
G540, Rack and Pinion Drives-X/Y axis, 1/2-Ball Screw-Z Axis w/THK HSR 25 Linear Slides, Steppers KL23H2100-35-4B, Power Supply-KL-600-48
Mactec54
You keep using Power Factor of 1. Typically it's around .75 for motors this size.
Plus that calculator is measuring input power. Spindles are (or should be) rated in output power. So the output of that calculator needs to be multiplied by the efficiency, another * .75 to .9 depending on the motor (not usually specified for spindle motors.)
By the current (amp) rating.If the spindle shows 10amp and 4kw using 240v I hear everyone saying no way, so how do I evaluate them?
Your average chinese 2.2Kw spindle is ~9 amps.
Just extrapolate the numbers.
If you want a 4Kw spindle, it should be roughly 9x(4/2.2), or about 16 amps. A chinese 4Kw spindle can probably be anywhere from 14-18 amps. If it's rated less, then it's not as powerful as they are telling you.
Gerry
UCCNC 2017 Screenset
[URL]http://www.thecncwoodworker.com/2017.html[/URL]
Mach3 2010 Screenset
[URL]http://www.thecncwoodworker.com/2010.html[/URL]
JointCAM - CNC Dovetails & Box Joints
[URL]http://www.g-forcecnc.com/jointcam.html[/URL]
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
I'm getting ready to pull the trigger on the VFD and just wanted to ask if I'm going to have any compatibility issues getting this working with my setup. I've got Mach3 and a g540 and of course want to be able to control the spindle speed with Mach.
To make this somewhat seamless do I need to incorporate some type of relay for powering on and off the VFD? Is there a doc floating around with some information on wiring that up?
Does anyone have any experiences with the HuanYang GT series vs the HY series drives?
https://www.amazon.com/gp/product/B0...RHIIBHYY&psc=1
Thanks for all the input it's been a learning experience for me.
Adam,
G540, Rack and Pinion Drives-X/Y axis, 1/2-Ball Screw-Z Axis w/THK HSR 25 Linear Slides, Steppers KL23H2100-35-4B, Power Supply-KL-600-48
The G540 manual shows how to add a relay. The relay just opens and closes a circuit from the VFD between the forward and ground terminals.
You can use the G540 analog speed control to control RPM from Mach3.
Note that the Huanyang plugins that most people use with Mach3 will not work with the GT series, but you don't need them if you use analog speed control and a relay.
Gerry
UCCNC 2017 Screenset
[URL]http://www.thecncwoodworker.com/2017.html[/URL]
Mach3 2010 Screenset
[URL]http://www.thecncwoodworker.com/2010.html[/URL]
JointCAM - CNC Dovetails & Box Joints
[URL]http://www.g-forcecnc.com/jointcam.html[/URL]
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
G540, Rack and Pinion Drives-X/Y axis, 1/2-Ball Screw-Z Axis w/THK HSR 25 Linear Slides, Steppers KL23H2100-35-4B, Power Supply-KL-600-48
Mach3 has at least 3 ways to control a spindle.
1) Step/Direction, which requires additional hardware to convert the step/direction signals to 0-10V analog.
2) PWM. The G540 has a built in PWM to 0-10V analog converter.
3) Modbus. The Huanyang HY VFD uses a nonstandard implementation of modbus. Becasue of this at least 2 users have written Mach3 plugins to communicate with the Huanyang HY VFD's. This is probably the most popular one.
Mach3 plugin for Huanyang VFD | Le royaume d'éole
Gerry
UCCNC 2017 Screenset
[URL]http://www.thecncwoodworker.com/2017.html[/URL]
Mach3 2010 Screenset
[URL]http://www.thecncwoodworker.com/2010.html[/URL]
JointCAM - CNC Dovetails & Box Joints
[URL]http://www.g-forcecnc.com/jointcam.html[/URL]
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
Here is a way to control the ON function without the relay, the G540 will switch the PLC input of the VFD direct.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
Option 2 I think would be my path unless the following statement from the description of the unit is bogus?.
"Rich of digital and analogy control terminals for versitile control , optional MODBUS (RS485) extension,diversified parameter setting.Work well with the Mach 3 controller "
Thanks Al_the_man, that looks like a direct wire up and no need for any additional wiring except from the G540 to the VFD to make the power on/off functionality work, unless I'm missing something?
[EDIT]
Al_the_man, what does "FOR" stand for?
They've also posted a schematic of the VFD wiring..
Last edited by adam_m; 09-27-2018 at 11:29 AM.
G540, Rack and Pinion Drives-X/Y axis, 1/2-Ball Screw-Z Axis w/THK HSR 25 Linear Slides, Steppers KL23H2100-35-4B, Power Supply-KL-600-48
FOR = Forward.
The Forward run input on the VFD.
Gerry
UCCNC 2017 Screenset
[URL]http://www.thecncwoodworker.com/2017.html[/URL]
Mach3 2010 Screenset
[URL]http://www.thecncwoodworker.com/2010.html[/URL]
JointCAM - CNC Dovetails & Box Joints
[URL]http://www.g-forcecnc.com/jointcam.html[/URL]
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
Yes, the details for the Huanyang VFD's I have show the inputs by function FOR, REV, RST etc.
I have used this method on the Huanyang and should work on any VFD with a similar style of these PLC inputs that are sourced from DC +ve or are capable of being set up for sourced input..
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.