Mashup = UPS + DOL motor I take it.
Worst part is they are 1ph motors, so they basically need new units.
Luckily they're just around the corner...where the Atlantic ocean and Africa are the corner.... in the middle east.
2HP hyd pump motor 230v 1phase. FLA 10A, reported inrush 53-63A. Customer wants a UPS on it - I found a 4kVA inverter rated for 12kVA surge for 20s. The ~14kVA inrush lasts only a second or so. I've been going back and forth with the mfr about it, he thinks it will burn out 'prematurely' and...
IRStuff - my transmitters are powered by either 2 AA's or 1 9v battery.
The only 'hole' in the box I'm testing with is the compressed gasket and whatever gap is created by me squashing the wires coming out....3 or more 18awg or smaller....when I close the hinged lid.
Thanks for the replies...
I use a simple contact sensor with an RF transmitter to fire a relay output on the receiver up to 40' away. This receiver is enclosed in a steel box with little or no air gaps, usually a NEMA 4. It seems to work ok with an antenna wire run out through a small hole in the box. I've been looking...
As I understand it, the servo may be controlled by the drive - (forward, backwards, stop), read/write parameters and get fault status and position, via "fieldbus" between the drive and a controller. Finding the right controller to accomplish this, then how to accomplish this, is where I am. I...
Can anyone point me to a succinct explanation of where to begin in choosing a means of commanding a servo drive via fieldbus (with no fieldbus experience), from a PLC or similar?
I understand there is a command protocol used by the drive that may be communicated via fieldbus, which I should be...
I found another mfr of singlephase motor drives....they seem much more informed and have more reasonable current ratings...just wanted to share.. http://anaconsystems.com/single-phase/
Jraef,
I did notice that right away, and asked the mfr what type of motor it is and he told me PSC. Additionally, it says in the manual that for reversing, the capacitor must "be disconnected". I haven't gotten my hands on it yet, but am pretty sure I can get into it and disconnect it.
I'm...
A motor with a built in VFD?? Have not seen that! The drive isn't the space killer, it's the actuator configuration using a 3ph motor...mechanical limits, always mechanical limits!
Would love to! Not an option. Plenty of 3ph actuators out there but won't fit in space we have. Looks like we're going to switch to a DC Motor. Kind of hard to believe Leeson is the one and only company that makes such a drive. What's the big deal?
I need to control a 1/2HP 115v motor...nothing fancy, just want to accel and decel - repeatably. I'm driving a 1500# load with an actuator (Duff Norton SPA6420). I found the perfect drive, a Leeson 175322. I need it in 3 weeks, I can't get it for 10. After scouring the WWW on and off for 3...
WIRING FOR MOTOR - ADDITION TO PREVIOUS POSThttp://files.engineering.com/getfile.aspx?folder=fbc78bc6-426b-4ff8-b2ce-29ae4ee73971&file=wiringdiagram.JPG
I'm getting no help from the motor mfr...and have not seen this before, so forgive me
if it's common, but I have a customer who has wired a singlephase motor as shown in this diagram using reversing contactors, and has told me that "it works". I'll have to attach the motor wiring from the data...
How does the NEC apply to a standard 120v receptacle in a metal singlegang jbox mounted to the backplane inside of a metal control panel enclosure mounted to a large (1/2"thick x 8"sq metal tube structure) fixture? There is 120vac coming in to run the panel and controlled equipment, and the...
Ya, they get basic IO handled nicely and the ladder logic object-oriented platform is very simple compared to typical LL...I'm told the function block diagram side of it 'is better' but i've not HAD to use it, and never took the time to write a program using it.
When I wanted to do some...
Thought this was shareworthy, as there is no information broadcast from Siemens about it, I had to figure out with the help of a guy in Germany...
If you (use Siemens LOGO, I'm sure there's at least 1 or 2 people besides me) and got the latest 0BA8, it had an unannounced firmware upgrade I think...
