Instruction manual 91/121 V6.3
Diagnostics
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 con-
nector 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 or EnDat).
8. Lack of hall sectors (with brushless Tacho-generator).
Operations to be carried out:
•
With brushless motor run the AutoTune to check the direction of the transducer.
•
With brushless tachometer you can check the status of hall sectors with the menu ”Hall sect status“ (see page 45).
•
With DC motor reverse 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 screen continuity on the motor, intermediate and drive connectors.
•
Check that the cable screen is connected to the ground both on the motor and on the drive.
•
See paragraph ”Optional transducers“ from page 55 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).
Alter Elettronica s.r.l.
73
