adccommunitymod (AutomationDirect) asked a question.
Created Date: October 16,2011
Created By: rwskinner
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I added a braking resistor to my GS3 and I really can't tell much of a difference. My Teco stops on a dime without a braking resistor. My GS3 is a 2hp unit, I have the required resistor hooked up to B+ and B- and I have a jumper from + to B+. I'm running in Vector mode. I have the parameter set to Ramp to Stop, I have decel set to 0.1 and I 've tried Automatic Decel and Ramp Decel. Reverse is instant, that is good, but a M5 stop takes a few seconds to stop the spindle, even at a low rpm. The only thing that the resistor did solve is my Current Overload Errors I would get when I issued a stop command. Am I wired correctly? Any parameters I'm missing?
Created Date: October 16,2011
Created by: milldrone
My GS3 is a 2hp unit, I have the required resistor hooked up to B+ and B- and I have a jumper from + to B+. I'm running in Vector mode.
I have the parameter set to Ramp to Stop, I have decel set to 0.1 and I 've tried Automatic Decel and Ramp Decel.
Reverse is instant, that is good, but a M5 stop takes a few seconds to stop the spindle, even at a low rpm.
The only thing that the resistor did solve is my Current Overload Errors I would get when I issued a stop command.
Am I wired correctly? Any parameters I'm missing?
I'm not familiar with the "M5 stop " can you define it for me?
Are you running in vector or sensorless vector? (just trying to be clear)
What is your setting for P6.04?
What is your setting for P6.05?
What is your setting for P6.06?
What is your setting for P6.17?
What is your setting for P6.18?
What is your setting for P3.02?
What is your setting for P3.03?
What is your setting for P3.04?
What is your setting for P3.05?
What is your setting for P3.06?
What is your setting for P3.07?
What is your setting for P3.08?
What is your setting for P3.09?
What is your setting for P3.10?
Created Date: October 17,2011
Created by: rwskinner
See below please: Answers in the quote.
I'm not familiar with the "M5 stop " can you define it for me?
RWS - M5 is just a CNC command to stop the VFD by Switching the Relays and dropping the voltage divider for the Remote RPM to Zero volts.
Are you running in vector or sensorless vector? (just trying to be clear)
RWS - Yes.
What is your setting for P6.04? = 00
What is your setting for P6.05? = 00
What is your setting for P6.06? = 00 Tried 02 also
What is your setting for P6.17? = 390
What is your setting for P6.18? = 380
All the below is defaults and are not used. I do use P3.01= 01.
What is your setting for P3.02? = 00
What is your setting for P3.03? = 03
What is your setting for P3.04? = 04
What is your setting for P3.05? = 05
What is your setting for P3.06? = 06
What is your setting for P3.07? = 09
What is your setting for P3.08? = 02
What is your setting for P3.09? = 12
What is your setting for P3.10? = 10
Created Date: October 17,2011
Created by: milldrone
I'm going to make some presumptions.
Are you using an encoder?
Is it possible to turn off D1? when you want to stop?
Let's try these settings
P6.04 = 02
P6.05 = 01
P6.06 = 00
I'm presuming you are using 240 volt input, P6.17 = 390
Before I suggest a value for P6.18 we need to know what the DC buss volts are when the drive is running. So you will need to monitor the DC buss volts. We need to set P6.18 at approximately 10 to 15 volts above the normal volts.
P1.06 = .1
Created Date: October 17,2011
Created by: rwskinner
First, thank you for your help.
Are you using an encoder? - RWS - No
Is it possible to turn off D1? when you want to stop?
RWS- Yes, I aready do with a relay. Once relay For Run/Stop on DI-1 and one relay for Forward and reverse on D2.
Let's try these settings
P6.04 = 02
P6.05 = 01
P6.06 = 00
I'm presuming you are using 240 volt input, P6.17 = 390
RWS- 220 VAC Single Phase In (Ac Mains)
Before I suggest a value for P6.18 we need to know what the DC buss volts are when the drive is running. So you will need to monitor the DC buss volts. We need to set P6.18 at approximately 10 to 15 volts above the normal volts.
RWS- I will check this this evening when I get in.
P1.06 = .1
RWS- I will try that. I'm curious tho.. That is Decel Time 2 which I'm not using. Also, I see a note in the manual. Accel and Decel Must be> 1 second to be effective. That is strange. I will try 1 second as well.
I'm trying to use this for power tapping however the delay for stopping has to be minimum so it's fairly predictable.
What I notice, when I disconnect DI-1 to stop, it decels very quickly but when it gets almost to a stop, instead of stopping it seems to coast a few turns at a very slow rpm.
Created Date: October 17,2011
Created by: rwskinner
These settings you provided seemed to help tremendously. I guess the stall prevention was overiding the braking?
Richard
Created Date: October 16,2011
Created by: rwskinner
I added a braking resistor to my GS3 and I really can't tell much of a difference. My Teco stops on a dime without a braking resistor.
My GS3 is a 2hp unit, I have the required resistor hooked up to B+ and B- and I have a jumper from + to B+. I'm running in Vector mode.
I have the parameter set to Ramp to Stop, I have decel set to 0.1 and I 've tried Automatic Decel and Ramp Decel.
Reverse is instant, that is good, but a M5 stop takes a few seconds to stop the spindle, even at a low rpm.
The only thing that the resistor did solve is my Current Overload Errors I would get when I issued a stop command.
Am I wired correctly? Any parameters I'm missing?