Diagnostics
Instruction manual 91/104 V9.2
6.4.14 Feedback X14 Fault
This alarm appears when the drive detects the failure or error in the signals provided by the transducer connected to the X14
connector and mounted in the motor.
The causes of the alarm are:
1. Transducer failure mounted in the motor
2. Incorrect setting of type, data or direction of the transducer
3. Error in transducer and drive links
4. Interruption or short circuit in the connection cable between transducer and motor
5. False contact or failure to insert connectors mounted on the motor and on the drive.
6. Disturbances on the connection cable between transducer and motor.
7. Signal level too low or high (in the case of resolver, SinCos, phonic wheel or EnDat).
Operations to be carried out:
•
Run the AutoTune to check the direction of the transducer.
•
Check the continuity and isolation of the conductors inside the shielded connection cable of the transducer.
•
Check the welds and shield continuity on the motor, intermediate and drive connectors.
•
Check that the cable shield is connected to the ground both on the motor and on the drive.
•
See paragraph "Optional transducers“ from page 59 to check the transducer’s operation.
6.4.15 Heat sink Over Temperature
This alarm appears when the heat sink temperature of the drive bridge is greater than that allowed.
The causes of the alarm are:
1. Temperature inside the electrical panel too high.
2. Insufficient internal ventilation of the drive.
3. Material deposited on the radiator that prevents cooling.
In this case check the proper functioning of the cooling fans or air conditioners of the electrical panel.
6.4.16 Lack of one supply phase
This alarm appears when the drive detects the lack of ONE power supply phase on L1, L2, L3. The causes that generate this alarm
when the drive is enabled (led DEN) are:
1. An interrupted fuse on the power line.
2. Power line strongly disturbed or with “net holes".
3. Opening the switch on the three-phase power line before disabling the drive (led DEN off).
Operations to be carried out:
•
Check the power fuses.
•
Make the right command sequence of the contactor on the three-phase line (see section 4.6 on page 20).
6.4.17 Lack of three supply phase
This alarm appears when the drive detects the lack of at least TWO power supply phase on L1, L2, L3. The causes that generate the
alarm when the drive is enabled (led DEN) are:
1. Three-phase/monophase supply voltage too low.
2. Lack of two or more stages of three-phase/monophase feeding.
3. Opening the switch on the three-phase power line before disabling the drive (led DEN off).
Operations to be carried out:
•
Check the power fuses.
•
Check the power supply voltage with a tester.
•
Make the right command sequence of the contactor on the three-phase line (see section 4.6 on page 20).
6.4.18 Motor Overtemperature
This alarm appears if the motor is overheated, if the drive block is enabled in case of motor over-temperature and if the set time has
elapsed. motor temperature control shall be carried out using the PTC probe to be integrated into the motor under construction; it shall
be like a closed contact when the temperature range is correct and shall be like an open contact when the maximum motor temperature
is exceeded. To disable this alarm or change some signaling modes, see paragraph "Motor temperature“ on page 65.
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Alter Elettronica s.r.l.
