Basic Servo motor introduction
Hi guys,
Hope you can help. I'm a newbie to servo motor and controllers and want to ask a quick question please.
From what I understand the basics to a servo motor are this:
1) Servo controller connects to servo motor in two ways. One lead for powering it and another lead for data feedback.
2) That then leaves one connection on the servo controller spare.CN1.
How do you "enable the servo" for a green light?
From my diagram of CN1, I have PIN 10 (0V) which is servo enable and PIN 18 (24V)
Does PIN 10 go to ground and PIN 18 go to a 24v switch?
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Re: Basic Servo motor introduction
There are a few more variations, some system close the loop back to the trajectory controller/planner, other to the drive. (Mach etc) , do you need general principles or do you have a certain product that you want to commission.
As this will decide what type of instructions you need, if you already have a product, show part No.s.
Some drives are step/dir some are ±10vdc analogue signnal in.
Al.
Last edited by Al_The_Man; 05-14-2017 at 11:55 AM.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
Re: Basic Servo motor introduction
Al: Thanks for quick reply mate:
It says in manual:
The range of power input should be +12V~+24V, Current ≥ 200mA (which is PIN 18). When the switch K is closed, power’s ground will connect with EN pin (which is servo enable PIN 10), making the chip of light-electron open, then servo enable EN is available.
This is not for business. Personal use. Using +10V,-10V analog to control servo motor speed/direction. Wired servo and controller. That was easy enough but if you don't wire PIN 10 then the green light on the controller doesn't come on so you can't turn the motor.
Re: Basic Servo motor introduction
What are the details/part numbers of what you are using??
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
Re: Basic Servo motor introduction
Al. I got a reply from the manufacturer.Originally Posted by Al_The_Man
"You do not need to connect pin 10 and pin 18, just change the PA53 to 0001."
Basically they are saying by-pass the servo enable by changing the parameters in the controller. Can you still add a kill switch I wonder?
Re: Basic Servo motor introduction
The diagram on this page may help clarify the overall setup of a servo system:
techref.massmind.org/techref/io/servo/index.htm
Click on "motion controller" from that diagram or look at this page to see the overview of an entire system:
techref.massmind.org/techref/method/motioncontrol.htm
James hosts the single best wiki page about motors for CNC hobbyists on the net:
http://techref.massmind.org/techref/io/motors.htm Disagree? Tell him what's missing! ,o)
Re: Basic Servo motor introduction
If you want to stop the servo's in the case of an E-stop without using any disable on the drive, you would insert a control relay/contactor in the supply to the drives, this would coincide with a E-stop input to the controller in order that the motion trajectory is cancelled.
This relay would be picked up when the E-stop relay was activated.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
Re: Basic Servo motor introduction
Al, when it says "The range of power input should be +12V~+24V"
Can you get away with +12V dc power supply to open the circuit for servo enable etc. I ask the manufacturer and they say you can try it with 12V lol. Which seems abit vague. Is it always best to under voltage than over voltage.
Re: Basic Servo motor introduction
I read that as any voltage in the range of +12 to +24?
If correct then +12 is OK.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
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