11/21/2019 6:10 PM | |
Posts: 1 Rating:
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Gents We are having an issue with our Bow crane hoist SCR. It is giving an error code of F005 which when look up the fault codes it mentions Fault in the Field (Shunt) Supply. The error code goes away immediately after we hit the reset on the SCR, and then the crane works well for about 20-30 mins and then the error code repeatedly starts to show up. We have checked the incoming voltage supply on the terminals 3U1 and 3W1 as mentioned in the troubleshoot guide. Also, we looked up the schematic and checked the fuses (the 20Amp and 7Amp) throughout the circuit and have found all to be good. We have also tightened all the connections to avoid any issues of a possible loose connection. Further to this we have changed out the brake contactor for the hoist and the diode inside the hoist J.box, after this we used the crane about 1 hour we did not get Fault alarm. This morning I hear from the crane operator that he got the SCR fault alarm while he use the crane about more than 30mins, so I told him operate it and he operate it several trips we did not get any alarm, for be sure how we can come out this fault if again show up, because the reason normally any troubles and hardware fail we put hand in to the right spot replace the hardware and we done with it and the problem fixed. But this case we unable locate the component, we just replaced those items were suspected. For sure we need a help and support from your guys, please advise further troubleshooting if the trouble not fixed, this will guide as to prepare for the next step on this troubleshooting. Look forward to inputs from your ------------------------------------------------------------------------------------------ |
Last edited by: Jen_Moderator at: 11/22/2019 07:20:10New subject after splitting |
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11/22/2019 5:06 AM | |
Joined: 4/23/2010 Last visit: 12/31/2023 Posts: 8092 Rating:
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Hello, Please check the fault value in r0949 when fault trigers. It will help to anayse the problem & take corrective action. Please refer the attached sheet which briefs about F005 fault & troubleshooting hints. If the motor & drive is in operation for long time, I suggest you to check field resistance & measure the actual field curent drawn. Compare these values with motor name plate specification. BTW, do you follow regular maintenance of DC motor? Is DC motor blower working? Is filter cleaned periodically? How are the ambiant conditions on crane? These points also needs to be check. HTH Attachment6RA70 F005 trouble shooting.zip (295 Downloads) |
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