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Anomaly Guide#5 Overcurrent Motor |
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First determine which device triggered the anomaly by examining the anomaly message on the application's computer console (within the Metalprogetti B2K/BAM/MAP application).
For Uniform Conveyor Systems running B2K
The anomaly record will contain both the CONVEYOR number as well as a POINT description which indicates the faulting device (arm, gate, etc).
For Order Assembly Systems running MAP or Storage Systems running BAM
The device ID is made up of 4 digits - the first 2 indicate the conveyor ID, the second 2 indicate the device ID.
In the following examples, XX represents conveyor ID while the last 2 digits represent the device.
Main conveyor anomalies will always be XX-00,
extraction arm anomalies will always be XX-01 through XX-10 depending on how many arms are installed,
and feedrail anomalies will always be XX-11 as demonstrated below.
Main conveyor anomalies will show as XX-00 |
Anomaly 5 Overcurrent Motor 02-00 = conveyor #2
Extraction anomalies will show as XX-01 up to XX-10 |
Anomaly 5 Overcurrent Motor 01-03 = conveyor #1, arm #3
Feedrail anomalies will show as XX-11 |
Anomaly 5 Overcurrent Motor 05-11 = conveyor #5, feedrail
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| Possible Causes | Checks to Perform |
| Determine if anomaly is for MAIN MOTOR or ARM | If Overcurrent Motor is for MAIN MOTOR as evident by its device ID explained above, contact Metalprogetti Support department for further assistance. |
| Pin chain obstructed and motor unable to spin | Verify there are no mechanical or physical obstructions (such as jammed hangers) from preventing the motor from turning. Sometimes a chain link pin will be forced behind or inside the plastic guide on which it spins, preventing the motor from being able to move it and causing thermal protections to trip. -If hanger is jammed in the chain, use pliers to work hanger free -If chain link pin is stuck behind guide, use pliers to work the pin free -If obstruction is difficult to detect, remove guards for better visibility Note: If obstruction is severe, it may be necessary to 'yank' the chain forwards or backwards by hand. This can be achieved by introducing slack on the chain and then slipping it off its drive sprocket as detailed below. Extraction chain disassembly Locate and loosen the 2 large bolts that secure the motor onto the arm. Once loosened, slide motor towards conveyor and work the chain free of its drive sprocket. If chain is difficult to remove from sprocket, remove the 2 large bolts and then carefully wrestle the motor/sprocket free of the chain. Feedrail chain disassembly Locate and identify the chain tensioner inside the motor and gearbox housing. Older feedrails use a mechancal spring to tension the chain, while newer feedrails have a pneumatic tensioner. Once tensioner mechanism is identified, disengage accordingly - either turn air off at main panel, or loosen the spring tension. Once the obstruction is resolved, proceed with the following checks. |
| Thermal protector or inverter needs resetting | If no obstructions are present, use the following instructions to reset the anomaly: NORMAL EXTRACTION ARM (straight, not curved): 1) Open the arm's subpanel located on top of conveyor where arm is mounted 2) Identify all contactors (model number begins with 3RT) and all thermal protectors (model number begins with 3RU or 3RB) 3) Briefly engage (just 2 or 3 seconds) each contactor (small button below surface) to determine if the corresponding chain spins If chain spins freely - push the blue reset button on the thermal protector (usually a 3RU or 3RB device), and then push the yellow anomaly reset button on main panel. FEEDRAIL: Use instructions above, except the subpanel is located near motor. CURVED EXTRACTION ARM (like Kiosk or U-Transfer): Push the yellow anomaly reset button and verify the chain spins freely during the next extraction. If chain does not spin or struggles - check again for stuck pins or hangers, and then lubricate the chain. Repeat the steps above to determine if the chain now spins freely. If chain still doesn't spin or struggles to do so, contact Metalprogetti Support department for further assistance. |
| Thermal protector set too low or chain needs lubed | Verify the thermal protector is set to the same amperage rating as its corresponding motor. Extraction arm motors are usually 0.9AMP, while feedrail motors are much higher and their thermal protector should be set to match. If thermal protector is set correctly - lubricate the chain then reset thermal protector and test. |
| Thermal protector has become damaged or defective | If resetting the offending thermal protector does not satisfy the anomaly and the trip threshold is set correctly, verify the motor will turn when using the corresponding contactor. If chain spins freely - replace thermal protector and test. |
| False overcurrent signal or other electrical problem | Contact Metalprogetti Support department for further assistance. |