MechMate CNC Router Forum

Go Back   MechMate CNC Router Forum > Search Forums
Register Options Profile Last 1 | 3 | 7 Days Search Today's Posts Mark Forums Read

Showing results 1 to 13 of 13
Search took 0.00 seconds.
Search: Posts Made By: Richards
Forum: Motors & their mountings Fri 16 October 2009, 13:41
Replies: 97
Views: 62,601
Posted By Richards
Yes, I usually derate my power supply voltage to...

Yes, I usually derate my power supply voltage to about 75% of the maximum to keep the motors cooler; however, my line voltage tends to run high (about 122VAC instead of the 115VAC that the...
Forum: Motors & their mountings Fri 16 October 2009, 05:28
Replies: 97
Views: 62,601
Posted By Richards
Travis, There is an mistake in the way that...

Travis,

There is an mistake in the way that you figured the voltage.

The maximum voltage is calculated by the formula: 32 X SQRT( Inductance). So, 32 X SQRT( 6mH ) = 78.4 VDC.

The current...
Forum: Motors & their mountings Thu 22 January 2009, 05:18
Replies: 97
Views: 62,601
Posted By Richards
The Avel Y236801 500VA 25V + 25V toroidal...

The Avel Y236801 500VA 25V + 25V toroidal transformer and the PMDX-135 power supply unit are exactly what I use on my test bench. Currently it is driving four PK296B2A-SG3.6 motors, which are...
Forum: Motors & their mountings Thu 07 August 2008, 22:50
Replies: 97
Views: 62,601
Posted By Richards
Jason, A switching power supply is normally...

Jason,

A switching power supply is normally used in applications that require constant current at a fixed voltage. Stepper motors require varying current and can handle a range of voltages, so a...
Forum: Motors & their mountings Thu 07 August 2008, 22:00
Replies: 97
Views: 62,601
Posted By Richards
I agree with Gerald and Heath. When I went to...

I agree with Gerald and Heath. When I went to http://www.orientalmotor.com and entered PK296A2A-SG7.2 for the motor and then clicked on "More Specifications", the inductance for that motor,...
Forum: Motors & their mountings Tue 24 June 2008, 07:23
Replies: 97
Views: 62,601
Posted By Richards
If the Variac feeds the toroidal transformer, the...

If the Variac feeds the toroidal transformer, the circuit will work. I do exactly that when I'm testing various motors. NEVER use a variac in place of a transformer. Also, make sure that the variac...
Forum: Motors & their mountings Fri 13 June 2008, 14:41
Replies: 97
Views: 62,601
Posted By Richards
Greg, I have a PK299-02, which has...

Greg,

I have a PK299-02, which has inductance similar to the PK296A1A-SGxx motor. In half-coil mode, the PK299-02 is very impressive. The problem with that motor is that when connected...
Forum: Motors & their mountings Wed 11 June 2008, 06:36
Replies: 97
Views: 62,601
Posted By Richards
Gerald, I prefer half-coil connection. That...

Gerald,

I prefer half-coil connection. That costs me about 30% of the full-coil torque, but it gives me much higher speed. Assuming that the motor is the PK296A2A-SG7.2, the gear box could never...
Forum: Motors & their mountings Tue 10 June 2008, 22:12
Replies: 97
Views: 62,601
Posted By Richards
The greatest heat with the Gecko G203v would...

The greatest heat with the Gecko G203v would probably be obtained when an axis is moving very slowly.

Here is the quote from the G203v data sheet:

"AUTO CURRENT REDUCTION: The G203V reduces...
Forum: Motors & their mountings Thu 03 January 2008, 08:35
Replies: 97
Views: 62,601
Posted By Richards
Paul, The Antek PS-6N56R5R12 should work just...

Paul,
The Antek PS-6N56R5R12 should work just fine if you wire the motors Bipolar Series. 56VDC is just about ideal for Bipolar Series wiring.

The PMDX-122 has several connection methods for the...
Forum: Motors & their mountings Thu 03 January 2008, 06:21
Replies: 97
Views: 62,601
Posted By Richards
Greg, The PK296A1A-SGxx motors are a special...

Greg,
The PK296A1A-SGxx motors are a special case. Their high inductance (30.8 mH) when wired bipolar series, makes that type of wiring impractical when used with Gecko stepper drivers because it...
Forum: Motors & their mountings Wed 02 January 2008, 19:28
Replies: 97
Views: 62,601
Posted By Richards
Doug, I still prefer the half-coil connections....

Doug,
I still prefer the half-coil connections. That is just a personal preference. It hasn't proved to be better or worse, but it works for me.

I hope that all of you know that I have, at any...
Forum: Motors & their mountings Wed 02 January 2008, 11:58
Replies: 97
Views: 62,601
Posted By Richards
Wiring the PK296A2A-SG7.2 motors & power supply voltage selection

I written quite a bit about using Oriental Motors PK296A2A-SGxx motors wired half-coil. Recently, some users have posted parts lists showing high voltage power supplies that have too much voltage...
Showing results 1 to 13 of 13

 
Forum Jump

All times are GMT -6. The time now is 22:14.


Powered by vBulletin® Version 3.8.3
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.