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Spindle RPM to be read from NC

Created by: PISCEAN 2010 at: 6/4/2010 9:38 AM (10 Replies)

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6/4/2010 9:38 AM	Rate (0)
PISCEAN 2010 Diamond Expert Joined: 4/23/2010 Last visit: 5/7/2023 Posts: 8034 Rating: (855)	Hi, We have equipped lathe machine with spindle 55 KW power, Yaskawa make VFD. CNC 802D with 611U drive for 2 axis. Spindle has 2 gear selection ranges. LOWER RANGE 14 to 28 RPM & HIGHER RANGE 29-56 RPM. I would like to provide interlock of spindle RPM with gear selection range. Can any one guide me how to read spindle comand value or actual spindle RPM from NC. On spindle shaft external encoder is fitted which gives feedback of spindle RPM. Regards, DEEP

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6/5/2010 6:49 AM	Rate (0)
PISCEAN 2010 Diamond Expert Joined: 4/23/2010 Last visit: 5/7/2023 Posts: 8034 Rating: (855)	Hi, Can anyone help? or if some doubts pls let me know. Thanks in advance. DEEP.

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6/6/2010 6:22 AM	Rate (0)
PISCEAN 2010 Diamond Expert Joined: 4/23/2010 Last visit: 5/7/2023 Posts: 8034 Rating: (855)	Hi Everybody, I will put my query in another way. System controller is 802D+611U drive. My spindle has Siemens make 1SE 0 series 55 Kw rating AC induction motor.It is fed by Yaskawa make CIMR - F7A4055 model VFD drive which is configured in simple V/F mode. Spindle has 2 gear stages. In lower gear stage spindle RPM available is 5 to 28 RPM & in higher stage,range is29-56 RPM. In progrma whenevr operator comands spindleRPM between 5-28, system should identify the gear stage accordingly i.e. suppose if the gear stage is higher then it should hold the spindle & axis feed & alarm should be displayed as change gear stage & whenever the gear stage is higher, & spindle comand RPM is lower, it should hold spindle & feed axis & alarm should be displayed as change gear stage.Spindle gear changing arrangement is manualy. Hope I will receive the help. Thanks in advance. DEEP.

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6/6/2010 1:38 PM	Rate (0)
Ekalavya Posts: 2964 Rating: (474)	Hello DEEP.... You Can able to read the Spindle RPM in NC but proper PLC logicto be returned. Logic can be returned in such a way that comparing the low vaule and the higher value I am giving an example you can try..... >Read the actual value of X axis and the comparison vaule.... >Set V26000001.1= 1 to request the axis actual values >VD57000000(egx=0for X axis) contains the current actual value. >This is read in the PLC program together with value entered in the PLC-MD14514[0]from theNCK to PLC 4500 2000 interface. > 145..... series parameters are availablein General MD Read Sinumerik 802D function description, section 20.9.3 and20.12 for futher informations. Hope thiswill meetyour requirement...... bye/Ekalavya
Ekalavya Posts: 2964 Rating: (474)
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6/7/2010 12:33 PM	Rate (0)
pfuser Silver Member Joined: 9/18/2006 Last visit: 5/29/2023 Posts: 586 Rating: (64)	Hi. You can give out the precautionary message before each change of speed. The given message would vanish at manual acknowledgement. The established set can be remembered in VB14000000.... Probably it will help you. see attachment Best regards. Attachment a8e6357b46e4.jpg (119 Downloads)
	Last edited by: O_Moderator at: 6/7/2010 12:55 PM picture transferred to attachment
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6/8/2010 1:11 PM	Rate (0)
Maddy. Posts: 20 Rating: (1)	Best solution can be , use of automatic Gear Selectionaccording to the RPM commanded . This way you can get a signal in PLC to change gear if the RPM is programmed is within the defined range
Maddy. Posts: 20 Rating: (1)
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6/8/2010 2:59 PM	Rate (0)
OvidiuNastac Silver Member Joined: 1/29/2008 Last visit: 7/26/2022 Posts: 419 Rating: (19)	Hi You can use automatic gear change but in the PLC instead of making necessary movement you can set an alarm and set the Read in Disable (or NC Stop) signal which will be reset (together with the alarm) by an acknowledgment external signal (i.e. a push button). Good luck Nit

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6/11/2010 6:29 AM	Rate (0)
PISCEAN 2010 Diamond Expert Joined: 4/23/2010 Last visit: 5/7/2023 Posts: 8034 Rating: (855)	Hi everybody, First of all let me tell you that I am new one in this field. Thank you very much to all of you for your keen interest & efforts all you put to help me. We could solve this problem by enabling spindlegear selection range, defining low & high gear RPM ranges & in PLC setting bits for identifications of LOW & HIGH gear selection. I have learnt/gained lot of information/knowledge about the system thru this forum. Once again Ithanks to all of you. Regards, DEEP.

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3/24/2014 8:33 AM	Rate (0)
SRITN Bronze Member Joined: 3/25/2012 Last visit: 10/6/2022 Posts: 99 Rating: (2)	hi, can u tell me How to read a commanded speed from nc to plc .in 840d sl.
	Last edited by: SRITN at: 3/24/2014 8:34 AM
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3/24/2014 9:52 AM	Rate (0)
Maddy_V2 Member Joined: 6/1/2012 Last visit: 2/21/2023 Posts: 1 Rating: (0)	@SRITN: hi, you can read spindle command in DB21.DBD100, do let me know if you need more info regarding this. Regards..

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