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Aircore EC
These instructions do not cover all variations in equipment nor provide information for every possible condition in installation,operation, or maintenance. For additional information, contact Infinitum Support. |
| Issue | Observations | Probable Cause | Mitigation |
|---|---|---|---|
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Motor unresponsive/ fails to start |
No LED status lights Nearby motors also inoperable |
No 460-480 voltage |
• Check incoming voltage. • If no incoming voltage contact site electrician. • Retry motor once voltage has been confirmed. • If voltage is confirmed go to next troubleshooting step. |
| Nearby motors also inoperable |
No 460-480 voltage |
• Check incoming voltage. • If no incoming voltage contact site electrician. • Retry motor once voltage has been confirmed. • If voltage is confirmed go to next troubleshooting step. |
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| Motor fails to start with confirmed VAC | No LED status lights on motor | Internal failure |
• Perform LOTO. • Remove VFD access or drive cover. (Depending on the model.) • Confirm connections for all internal wiring connections, particularly the main 460 VAC line-in wiring and the cable from the Inverter board to CIO board. • Using a multimeter, determine continuity of the three fuses. • If any are open, record which one, RMA motor. • Close cover and try power again if no open fuses. • If no LEDs are lighted, RMA motor |
|
Solid green LED, normal yellow heartbeat LED, no red LED: serial Modbus connection incomplete, grounded, or reverse polarity |
Lack of external communication to the motor |
• Correct the polarity. • Correct the ground/shield/drain by termination at the main RTU device with a contiguous, isolated run from end of line to end of line. • Remove any wrongful ground locations. • Verify each connection point or break for proper termination of the conductors along the daisy chain. • Verify the correct wire for the application is being used. |
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| Solid green LED, normal yellow heartbeat LED, no red LED: analog control unresponsive or incorrect motor speed | Incorrect signal voltage or incorrect I/O terminal connection |
• The +24v terminal on the I/O board is OUTPUT in DC voltage only. • The digital input 1(DIN1) needs to receive 24v DC for the motor to start at minimum speed which can be set under Parameter Settings>Terminal Settings>AI1 Min Setting (%). • The analog input(A_IN) by default will accept 0-10v for 0-100% speed. |
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| Red LED Fault LED illuminated | Internal electrical issue |
• Use MCS to determine fault, and Serial # for motor. • Photograph motor label and reach out to Infinitum Support for assistance. |
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No connection to Motor Control Software via TCP (ethernet) |
LEDs (green on, yellow flashing), No red LED | Incorrect motor operating mode |
• Change MCS operating mode on upper left corner of home screen. |
| LEDs (green on, yellow flashing), No red LED | Incorrect IP address | • Confirm static IP address: 172 17 20 153 / 255 255 0 0 | |
| MCS connects to motor, but motor won't start | Fault observed in upper right corner of MCS | Internal motor fault |
• Create a save state to record the data. • Confirm the motor parameters are set to what is needed for the spec of the fans. • Record the state of the motor and the order of the faults as they are listed. • Refer to Fault Page on the Infinitum Support page for information. • Clear Faults with the MCS and see if the motor will restart at the Minimum RPM. • If the motor starts, then observe its operation for 15 mins listening and looking for any defects. • If the observation is ok turn the motor to mid the full RPM for 10 mins each. • If the motor runs for both with no issues, then remove the laptop and return motor to service. |
| MCS connects to motor, but motor has Modbus or Serial communication issues | MCS connects to motor. No operation via Modbus or Serial | Cable, or Board issue |
• LOTO the motor at the mainline disconnect and follow your company procedure to ensure no power. • Check L1, L2, L3 on the motor after LOTO to confirm no power. • Are wires stripped properly and inserted into the terminal – Remove wires and re-seat to confirm. • Review boards and wiring inside of motor access panel to determine if anything looks burnt, unplugged, or out of place. • Contact Infinitum Support with any concerns. Pictures will help. • MAKE SURE MOTOR HAS POWER REMOVED AND LOTO – Then physically spin motor to see if it spins freely. • If there is resistance record it with a video and send to Infinitum Support. • If motor spins freely then remove the CIO 24V DC Comm wires and use a meter to check them. • Check all wires in the array of fans that are for the Modbus/Coms. • Confirm shields are terminated where needed, solid connections are made, and wires are not pinched/nicked anywhere. • It may be necessary to remove all connections and reseat them back in the terminals/connectors. • It is very important to have good connections on the Modbus/Comm side. • Make sure all motors in the array have the end of line jumper or end of line resistor installed per specs and only at the end of line. • Confirm all motors that are not end of line motors have the comm dipswitch in the off position. • Remove field wires for the Modbus comms making sure the ends do not touch and are safely covered with tape or connectors. • Install wires from USB to RS485 adapter in the comm ports. • See if the motor will run using only the MCS and attached wires. • If YES then there is a field wire issue. • If NO then contact Infinitum Support for a new CIO board. |
| MCS connects to motor but not delivering 100% power | Motor is running, LEDs are normal (green ON, yellow flashing) | Power wiring, or Board issue |
• Perform LOTO. • Remove VFD access cover on Gen2 or entire drive cover on Gen3 VFD. • Confirm connections for power connections, measure the main 460 VAC line-in wiring for all three phases. • The motor will run even if one phase is lost. |