Instruction manual 91/121 V6.3
Diagnostics
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Normally, these messages only appear during commissioning or when auxiliary services are powered.
6.5.1 Drive Overload Limit activated
This message appears when the drive has delivered a higher current than that of continuous service and the heat sink has reached its
maximum temperature under those conditions.
The output current is gradually reduced
to that of continuous service to avoid dam-
aging the drive.
The causes that generate the message are:
1. Mechanical load greater than expected.
2. Acceleration times too short.
3. Load inertia too high.
4. High number of consecutive accelerations and decelerations of the motor.
5. Temperature in the high electrical cabinet.
Operations to be carried out:
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Reduce the performance of the machine.
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Check the lubrication of the machine.
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Check the size of the drive.
•
Use a larger drive.
6.5.2 Enter the motor data
This message appears when you try to enable the drive to work with the DEN command, but you have not introduced the necessary
motor parameters (see paragraph ”Setting motor parameters“ on page 54).
Operations to be carried out:
•
Enter ALL motor data as indicated in paragraph ”Setting motor parameters“ on page 54.
6.5.3 Full scale of FBK X14 inputs
This message appears when the drive detected too high a voltage signal on one of the pins of the X14 connector connected to the
transducer mounted in the motor. If the signaling occurs occasionally and giving the alarm reset command (RST) this message disap-
pears, then it is a disturbance that occurred on the transducer connection cable. Instead, if the writing remains, it means that the trans -
ducer actually has too high a signal. Depending on the type of transducer board installed, you can try to fix the problem:
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Resolver board (01/324): try turning the visible trimmer next to the X14 connector, in the anticlockwise direction and give
the alarm reset command (RST) to see if the message disappears.
•
SinCos board (01/325): check the wire cable between the X14 connector and the transducer in the motor. If the problem is
not solved, the cause could be an incompatible or faulty transducer. Contact the ALTER Technical Service.
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EnDat board (01/327): check the wire cable between the X14 connector and the transducer in the motor. If the problem is not
solved, the cause could be an incompatible or faulty transducer. Contact the ALTER Technical Service.
6.5.4 L1 – L2 – L3 Offset calc.
This message may appear after providing auxiliary services, if there is voltage on the L1, L2 and L3 terminals. To avoid this problem
it is recommended to do the control circuit of the line switch as recommended in drawing 3 on page 13.
6.5.5 Lack track A or B of the encoder
This message may appear during the Autotune procedure (see paragraph ”Autotune for the synchronization of the transducer“ on page
54), and indicates that the signals of tracks A and B of the TTL encoder do not reach the drive. Check the cable of signals between the
X4 connector and the encoder connector mounted in the motor.
6.5.6 Memoria Flash non protetta
If this message appears, the drive must be returned to the ALTER for a check.
6.5.7 Memory Flash error
This message appears after saving parameters on the flash memory if the system realises that the written data is not right. In this case
you can try again the storage, but if the message continues to appear you must contact the technical service ALTER.
6.5.8 Missing motor param. option
This message appears when you try to enable the drive to work with the DEN command, but you have not entered the optional motor
parameters or you have not yet run the Autotune (see paragraph ”Autotune for the synchronization of the transducer“ on page 54).
Operations to be carried out:
Alter Elettronica s.r.l.
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