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Sinamics G120 VFD DI Problem

Created by: User62719 at: 6/19/2015 9:41 AM (7 Replies)

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6/19/2015 9:41 AM	Rate (0)
User62719 Advanced Member Joined: 1/14/2014 Last visit: 3/13/2023 Posts: 112 Rating: (1)	Hello, I'm using a Sinamics G120 with CU240E-2 PN-F and am having issues with the digital inputs when running with any macro that uses the I/O on the front of control panel. DI0, DI2, DI4 work fine, DI1, DI3, and DI5 do not. Applying 24V directly to the inputs and checking the CU DI status parameter I get nothing on those ports. Tried swapping control units, same result. I was taking a wild guess that this might have something to do with the failsafe inputs combining DI0/1, DI2/3 and DI4/5, but none of the macros I was testing used F-inputs, unless there's something I'm missing. Thanks for any help.

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6/19/2015 10:03 AM	Rate (2)
ChristophD Grandmaster-Expert Joined: 5/12/2006 Last visit: 12/10/2023 Posts: 21967 Rating: (2930)	Hello, check the manual of the drive, the DI groups have different ground connectors. Look which ground you must use for the DI1/DI3/DI5. DI1/DI3/DI5 -> uses GRN from pin 34 DI COM2 DI0/DI2/DI4 -> uses GRN from pin 69 DI COM1 Regards Christoph
	Last edited by: ChristophD at: 6/19/2015 10:12:26 AM
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This contribution was helpful to 1 thankful Users krsv80

6/19/2015 2:10 PM	Rate (0)
User62719 Advanced Member Joined: 1/14/2014 Last visit: 3/13/2023 Posts: 112 Rating: (1)	Thanks Christoph, Connecting the second DI COM to 0V fixed the problem.

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This contribution was helpful to 1 thankful Users Min_Moderator

6/3/2016 12:58 AM	Rate (0)
Feltes Advanced Member Joined: 9/28/2015 Last visit: 10/25/2023 Posts: 5 Rating: (0)	Hello, I'm using a G120C and I have a similar problem. Only DI3 doesn't work.... i checked the connections, the ground references, and is everything ok, because i used another drive in the same place and it worked. So, i thought the problem was with configuration of drive, but i already reset to factory settings several times and nothing changes. I have 15 devices with this problem. I can't believe that 15 came from factory broken... Anyone have some ideia about?

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6/3/2016 7:37 AM	Rate (0)
PISCEAN 2010 Diamond Member Joined: 4/23/2010 Last visit: 12/9/2023 Posts: 8071 Rating: (862)	DI3 setting configuration depends upon internal or external power supply. Also factory default setting depends upon inverter profibus or profinet interface. Please study your drive connection details & configure accordingly. Please refer the attached sheets for detailed information. (Extracts from manual) Attachment Sinamics G120C DI3 configuration .pdf (357 Downloads)
	Last edited by: PISCEAN 2010 at: 6/3/2016 7:38:21 AM
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6/3/2016 1:24 PM	Rate (0)
Feltes Advanced Member Joined: 9/28/2015 Last visit: 10/25/2023 Posts: 5 Rating: (0)	I am using configuration 4, using external power supply. I checked the conections to terminals 69 and 34, it is ok because DI1 and DI5 works fine. My inverter has a profinet interface and I configured it with macro 7. Like i did with almost 80 inverters in the same pannel and all of them worked! But the others 15 inverters present the same problem with DI3... Do you know if there is some parameter that enable/disable DI3? Or, i'm thinking that there is hardware or firmware error...

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7/13/2016 10:25 AM	Rate (0)
Min_Moderator Platinum Member Joined: 9/3/2014 Last visit: 3/13/2019 Posts: 4782 Rating: (123)	New question published by nibbzz is split to a separate thread with the subject G120 VFD, digital inputs status table is not updating. Best regards Min_Moderator

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10/31/2016 2:56 PM	Rate (0)
Min_Moderator Platinum Member Joined: 9/3/2014 Last visit: 3/13/2019 Posts: 4782 Rating: (123)	New question published by Johny1234 is split to a separate thread with the subject G120 vfd not powering up. Best regards Min_Moderator

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