Teco Drive Alarms

AL-01:

- This can be due to drive enable signal (through control cable), coming on prior to the drive having power (enable signal which powers up the drive through the contactor). We have had a bad batch of control cables cause this issue.

- Mach4: Increase drive enable delay in machmotion plugin\

AL-02:

*(Do not power cycle drive)

If you are getting an AL-02 Over-Voltage on your drive you should check the motor power terminal continuity (Ohms):

- The main circuit voltage has exceeded its maximum allowable value (170 to 250 VAC)

- Check continuity between GND and each pin for the motor power.

For smaller motors (3 main pins inside the connection), GND will be the outside threads for the motor power cable
For larger motors (4 main pins inside the connection), GND will be one of the pins. Shine a flashlight in to see the marking for which one is ground.
If there is any continuity between GND and any of the U,V,W terminals, it is a bad motor causing the problem and will likely need to replace the drive as well.

AL-04:

-If you are getting an AL-04 Output Transistor Malfunction error on your drive after following the instructions in the drive error list, it is most often the drive which has gone bad. However, it could be the motor as well. If there is the same size motor you can do some cable swapping to determine if it is the motor or the drive. Contact MachMotion for help in cable swap testing.

- Could be the Motor Code being wrong. Contact MachMotion.

AL-05:

- if the drive has been in service less than 6 months, try removing the o-ring in the encoder cable connector at the motor side. The issue could be the connection is not quite good enough and there is vibration which could cause intermittent AL-05 alarms. Removing that o-ring will allow it to sit down further into the connector to make a better connection between the cable and the encoder connector.

Pot Not:

indicates that CW limit and CCW limit pins are active (open) on CN1. This is normal after performing drive reset with Cn029 as limit pins are not normally connected to any switches.

Pot = Positive Over Travel

Not = Negative Over Travel

Check Hn504, Hn505 (CW and CCW limit); they will be 0104 and 0105; set them to 0004 and 0005; this inverts the logic of the inputs so inputs are normally open. Need to power cycle drive after setting those parameters.

The drive will also have parameter CN035 = 0 which will then show "run" or "bb" depending on if the drive is enabled or not. We ship them with Cn035 = 15 which will then show the encoder feedback (the string of numbers that change as the motor moves).

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