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SINAMICS G120 - CU240E-2DP - Slow Jog response

Created by: simaticfan79 at: 5/2/2012 6:54 PM (15 Replies)

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5/4/2012 9:59 PM	Rate (0)
simaticfan79 Experienced Member Joined: 1/4/2011 Last visit: 1/21/2021 Posts: 22 Rating: (0)	TeachTeam: tnx for suggestion. I know what You are trying to tell me, but is there more simple way, since my application if fairy simple. I can not use fixed setpoints - and JOG is exactly what I need and that is what it was designed for... I've had many applications build like this before and had no problems. So I find it unbelievable that new product is so hard to configure for basic things... My application: No profibus (will be in use in the future). I use DI0 for normal ON/OFF, analog potentiometer for speed reference and DI2 for JOG (inching the machine) signal. JOG is set to 250 RPM. Normal operational speed is around 1500 to 3000 RPM. I need linear speed reference for normal operation - can not use fixed setpoint. And normal start has to be smooth - ramp 5-10 second. But JOG has to start almost instantly - no ramp. These are basics requirements for the application that I have. Thx!
	Last edited by: simaticfan79 at: 5/4/2012 10:03 PM Last edited by: simaticfan79 at: 5/4/2012 10:02 PM
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5/6/2012 4:47 AM	Rate (0)
Vithani Platinum Member Joined: 7/8/2009 Last visit: 9/5/2020 Posts: 1973 Rating: (473)	Hello I assume there will be No mechanical problem if you start with 0 ramp in Jog Try setting 899.3 (Jog active Bit) in P1122 This will bypass RFG during JOG Regards, Devesh
	I dont Like people driving Fast, thats the reason I overtake them ;)
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5/9/2012 8:55 PM	Rate (0)
simaticfan79 Experienced Member Joined: 1/4/2011 Last visit: 1/21/2021 Posts: 22 Rating: (0)	Tnx, will try that and will report!

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8/26/2013 9:43 PM	Rate (0)
simaticfan79 Experienced Member Joined: 1/4/2011 Last visit: 1/21/2021 Posts: 22 Rating: (0)	Hello! I know, it's been a while, since I have posted this thread. But I still have the same problem. When using JOG (via profibus now) - response is very slow, since SP is going via RFG. So I want to disable RFG when using JOG (P1122) BUT I cannot access this parameter! It is simple not there! So my million dollar question is, how to disable RFG on Sinamics G120 with BICO!? THANK YOU!

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3/25/2014 1:18 PM	Rate (0)
Cleber Mendes1 Posts: 4 Rating: (0)	Did you solve that question?? How?? Can you reports this ??? Thanks
Cleber Mendes1 Posts: 4 Rating: (0)
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3/12/2015 4:22 AM	Rate (0)
Yu-wen Tang Silver Member Joined: 10/7/2009 Last visit: 12/22/2020 Posts: 264 Rating: (74)	You can create a new CDS1, and in CDS1 change the Ramp-up scaling factor (p1138) and Ramp-dn scaling facttor (p1139) differently from the values of CDS0. When you Jog, change to CDS1 using CU's I/O, and in the end of Jog operation, change it back to CDS0.
	Last edited by: You Win at: 3/12/2015 4:23:53 AM
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