9/13/2021 2:49 PM | |
Posts: 1 Rating: (0) |
Hi my brake is stuck on the electric motor and the fault is the same F8501 with no 24vdc reading out of the control unit but i can hit the contactor that is supples the brake and it will release any thing I should check to fix I am dead in the water or how can I get the brake off? Thank You ------------------------------------------------------------------------------------------ |
Last edited by: Jen_Moderator at: 09/14/2021 08:19:23New subject after splitting |
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9/14/2021 2:53 PM | |
Joined: 10/11/2006 Last visit: 9/30/2024 Posts: 5909 Rating: (806)
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Dear ATS4, When you're using a PLC, the bit 10 in the first word (PZD1, usually control word 1) has to send a "1" level signal down to the drive. Otherwise the CU always states, that the communication is interrupted. To make it easy, e.g. with SINA_SPEED the presetting is 47E hex, hence the on signal os given by the bit 0 when it is "1". Then the inverter is switched on, exiting the motor and giving the setpoint. When the brake conrol is enabled, the brake opens at the adjusted conditions. Brake control operation: Follow the instruction in the manual SINAMICS G120 converters with CU240B-2 and CU240E-2 Control Units section 4.7 and 8.13 They're describing the connection and the internal brake control by the CU.
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With best regards, |
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