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Message ID: 32
Entry time: Tuesday, April 18, 2017, 19:28
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| Author: |
Jason Kapalka |
| Category: |
T-Hall Crane |
| Type: |
Development |
| Subject: |
ATH overhead crane fault investigation |
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On April 18, 2017, an investigation was initiated to determine the cause of the ARIEL Target Hall overhead crane faults that occurred while attempting to perform remote lifting operations in Test Mode on a 8.6 tonne SEG block (see E-Log #30). Hugo Lapointe (Automation Technician, REEL-COH) requested pictures of the HIM (Human Interface Module) displays, located inside the electrical panels in the crane control room, immediately after a fault to assist with the troubleshooting process.
An unsuccessful attempt was made to trigger a fault in Test Mode with no load on the hook block. A 8.6 tonne load was then attached to the hook block and three separate fault incidents were quickly triggered, which are summarized below:
2017-04-18 2:12:57 PM 103. Main Hoist East Drum North Motor Drive Fault (700VFD) Fault Code: 211 Fault Description: Safety Brd Fault
2017-04-18 2:13:00 PM 104. Main Hoist East Drum South Motor Drive Fault (800VFD) Fault Code: 4 Fault Description: UnderVoltage
2017-04-18 2:13:00 PM 136. Main Hoist West Drum South Motor Drive Fault (900VFD) Fault Code: 4 Fault Description: UnderVoltage
2017-04-18 2:13:01 PM 135. Main Hoist West Drum North Motor Drive Fault (1000VFD) Fault Code: 4 Fault Description: UnderVoltage
2017-04-18 2:19:57 PM 136. Main Hoist West Drum South Motor Drive Fault (900VFD) Fault Code: 211 Fault Description: Safety Brd Fault
2017-04-18 2:20:00 PM 103. Main Hoist East Drum North Motor Drive Fault (700VFD) Fault Code: 4 Fault Description: UnderVoltage
2017-04-18 2:20:00 PM 104. Main Hoist East Drum South Motor Drive Fault (800VFD) Fault Code: 4 Fault Description: UnderVoltage
2017-04-18 2:20:00 PM 135. Main Hoist West Drum North Motor Drive Fault (1000VFD) Fault Code: 4 Fault Description: UnderVoltage
2017-04-18 2:23:07 PM 136. Main Hoist West Drum South Motor Drive Fault (900VFD) Fault Code: 211 Fault Description: Safety Brd Fault
2017-04-18 2:23:10 PM 103. Main Hoist East Drum North Motor Drive Fault (700VFD) Fault Code: 4 Fault Description: UnderVoltage
2017-04-18 2:23:10 PM 104. Main Hoist East Drum South Motor Drive Fault (800VFD) Fault Code: 4 Fault Description: UnderVoltage
2017-04-18 2:23:10 PM 135. Main Hoist West Drum North Motor Drive Fault (1000VFD) Fault Code: 4 Fault Description: UnderVoltage
It appears as though one motor causes the initial fault (Safety Brd Fault) and then the other three motors react to a safety trip fault (UnderVoltage). Upon further review of all the fault incidents from March and April it was observed that:
- 136. Main Hoist West Drum South Motor Drive Fault (900VFD) caused the initial “Safety Brd Fault” on 8 of 10 fault incidents
- 103. Main Hoist East Drum North Motor Drive Fault (700VFD) caused the initial “Safety Brd Fault” on 2 of 10 fault incidents
Pictures showing the 700, 800, 900, and 1000VFD HIM displays in FAULTED and normal mode were send to Hugo (COH) for review and are attached below. |
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