Hi Amir,

Are your drives of Step/Dir Input type?

The resolution shouldn't need to match. An encoder will always have the quantization error in any case.

KFLOP uses floating point commanded positions.

Regards

Group: DynoMotion	Message: 9909	From: a.h pirjamaat	Date: 8/5/2014
Subject: Re: adding encoder

i use Kflop/Kanalog

servo driver have only analoge input (+-10v)

my ballscrew have pitch 20mm/rev and servo motor have 1500ppr ,in fact 300pulse for each mm .

i think this package dont have good resulotion for cnc machine .

whats your opinion ?

is it possible more describe about matching this two encoder ?

On Tuesday, August 5, 2014 8:52 PM, "Tom Kerekes tk@... [DynoMotion]" <DynoMotion@yahoogroups.com> wrote:

Hi Amir,

Are your drives of Step/Dir Input type?

The resolution shouldn't need to match. An encoder will always have the quantization error in any case.

KFLOP uses floating point commanded positions.

Regards

Group: DynoMotion	Message: 9910	From: Tom Kerekes	Date: 8/5/2014
Subject: Re: adding encoder

Hi Amir,

Does your Analog Servo driver have a Tachometer or Encoder Input to control motor velocity?

How is the motor connected to the lead screw?

Yes the resolution seems somewhat low. It depends on your requirements. As a general rule I like to have resolution 10X or higher than the desired accuracy.

There is no need to match the resolution. You may not even need to use the encoder on the motor.

Regards

Group: DynoMotion	Message: 9914	From: Amir	Date: 8/5/2014
Subject: Re: adding encoder

Tom

motor have TTL Encoder, not tacho

i deciding connect motor to lead screw directly because i think pully time and belt dont have good accuracy.

about 8192ppr encoder, is it possible use this encoder with this package ?

whether if use this encoder , cause Increase the accuracy?

Regard

Amir

On Tuesday, August 5, 2014 9:23 PM, Amir <cncperfect@...> wrote:

Tom

motor have TTL Encoder, not tacho

i deciding connect motor to lead screw directly because i think pully time and belt dont have good accuracy.

about 8192ppr encoder, is it possible use this encoder with this package ?

whether if use this encoder , cause Increase the accuracy?

Regard

Amir

On Tuesday, August 5, 2014 9:14 PM, "Tom Kerekes tk@... [DynoMotion]" <DynoMotion@yahoogroups.com> wrote:

Hi Amir,

Does your Analog Servo driver have a Tachometer or Encoder Input to control motor velocity?

How is the motor connected to the lead screw?

Yes the resolution seems somewhat low. It depends on your requirements. As a general rule I like to have resolution 10X or higher than the desired accuracy.

There is no need to match the resolution. You may not even need to use the encoder on the motor.

Regards

From: "'a.h pirjamaat' amirhpiry@... [DynoMotion]" <DynoMotion@yahoogroups.com>
To: "DynoMotion@yahoogroups.com" <DynoMotion@yahoogroups.com>
Sent: Tuesday, August 5, 2014 9:30 AM
Subject: Re: [DynoMotion] adding encoder

i use Kflop/Kanalog

servo driver have only analoge input (+-10v)

my ballscrew have pitch 20mm/rev and servo motor have 1500ppr ,in fact 300pulse for each mm .

i think this package dont have good resulotion for cnc machine .

whats your opinion ?

is it possible more describe about matching this two encoder ?

On Tuesday, August 5, 2014 8:52 PM, "Tom Kerekes tk@... [DynoMotion]" <DynoMotion@yahoogroups.com> wrote:

Hi Amir,

Are your drives of Step/Dir Input type?

The resolution shouldn't need to match. An encoder will always have the quantization error in any case.

KFLOP uses floating point commanded positions.

Regards

From: "Amir cncperfect@... [DynoMotion]" <DynoMotion@yahoogroups.com>
To: "DynoMotion@yahoogroups.com" <DynoMotion@yahoogroups.com>
Sent: Tuesday, August 5, 2014 8:28 AM
Subject: [DynoMotion] adding encoder

hi Tom

i have old servo drive and motor, that motor have 1500ppr encoder.

i have a important question about whether i can adding second Encoder with 8192ppr to ballscrew .?

motor encoder connected to servo driver and second encoder connect to Kflop..

is simple , but i think Does not match ,because servo motor can detect only 1500 line .

it dont can stop in between two line

please guide me

regard

Group: DynoMotion	Message: 9915	From: Tom Kerekes	Date: 8/6/2014
Subject: Re: adding encoder

Hi Amir,

If your motor is connected very tightly to the leadscrew+encoder you should be able to use the encoder on the lead screw. Accuracy is depends on many things. Higher encoder resolution will help. KFLOP can count 1e6 quadrature counts/second. So very high resolution will limit maximum speed. In your case 8192ppr = 32768 quadrature counts/rev.

1e6 / 32768 = 30.5 rev/sec = 1831 RPM

1831 RPM x 20mm/rev = 36621 mm/min

Regards

Group: DynoMotion	Message: 10042	From: Amir	Date: 8/26/2014
Subject: Re: adding encoder

Tom

motor have TTL Encoder, not tacho

i deciding connect motor to lead screw directly because i think pully time and belt dont have good accuracy.

about 8192ppr encoder, is it possible use this encoder with this package ?

whether if use this encoder , cause Increase the accuracy?

Regard

Amir

On Tuesday, August 5, 2014 9:14 PM, "Tom Kerekes tk@... [DynoMotion]" <DynoMotion@yahoogroups.com> wrote:

Hi Amir,

Does your Analog Servo driver have a Tachometer or Encoder Input to control motor velocity?

How is the motor connected to the lead screw?

Yes the resolution seems somewhat low. It depends on your requirements. As a general rule I like to have resolution 10X or higher than the desired accuracy.

There is no need to match the resolution. You may not even need to use the encoder on the motor.

Regards

i use Kflop/Kanalog

servo driver have only analoge input (+-10v)

my ballscrew have pitch 20mm/rev and servo motor have 1500ppr ,in fact 300pulse for each mm .

i think this package dont have good resulotion for cnc machine .

whats your opinion ?

is it possible more describe about matching this two encoder ?

On Tuesday, August 5, 2014 8:52 PM, "Tom Kerekes tk@... [DynoMotion]" <DynoMotion@yahoogroups.com> wrote:

Hi Amir,

Are your drives of Step/Dir Input type?

The resolution shouldn't need to match. An encoder will always have the quantization error in any case.

KFLOP uses floating point commanded positions.

Regards

hi Tom

i have old servo drive and motor, that motor have 1500ppr encoder.

i have a important question about whether i can adding second Encoder with 8192ppr to ballscrew .?

motor encoder connected to servo driver and second encoder connect to Kflop..

is simple , but i think Does not match ,because servo motor can detect only 1500 line .

it dont can stop in between two line

please guide me

regard

Group: DynoMotion	Message: 9907	From: Amir	Date: 8/5/2014
Subject: adding encoder

Group: DynoMotion	Message: 9908	From: Tom Kerekes	Date: 8/5/2014
Subject: Re: adding encoder