12/9/2020 1:04 PM | |
Joined: 6/3/2014 Last visit: 1/11/2023 Posts: 10 Rating: (0) |
Dear Experts, I am using an S7 224XP CPU for 4 strand cored wire feeding application. (with Siemens Micro master 440 drive). When I give speed reference from OP77 HMI the motor runs faster than reference speed. I checked all wiring, connections, electronic earthing system and found normal. The above mentioned CPU has following specifications: S7-200 CPU Module 6ES72142AD230XE0, CPU 224XP, 24 V DC Supply, DI 14X24VDC, DO 10X24VDC, AI 2 / AO 1 X 12 Bit. I checked corresponding Analog output voltage from CPU to MM40 and analog input voltage from MM40 to CPU. The details are attached in the excel sheet. (I observed the voltage generated by PLC is higher than setpoint value). All wirings and DIP switch settings of MM40 were checked and found normal. Please give your valuable suggestions on this issue. Thank you in advance AttachmentLRF-1 wire feeder.xlsx (354 Downloads) |
1/2/2021 9:58 PM | |
Joined: 4/22/2010 Last visit: 5/3/2024 Posts: 5697 Rating: (715)
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Hello, Looks like the scaling is wrong indeed. Have a look at tips &https://support.industry.siemens.com/cs/ww/en/view/1232912 Tip 38 is about scaling. Regards Marcjan |
Last edited by: Marcjan at: 01/02/2021 22:01:59Problem solved? |
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