Instruction manual 91/104 V9.2
Diagnostics
•
Wrong maximum voltage parameter “Maximum voltage ".
•
Power supply voltage on L1,L2,L3 or DC+, DC- too low to power that type of motor.
•
Three-phase connection cables of small section that make voltage fall.
In this case check:
•
The voltage on the DC BUS with the parameter "DC Bus Voltage“(see page 46), while the motor is under load.
•
Calculate the maximum power supply voltage of the motor with:
Vbus
√
2
•
Consider keeping a certain margin between the voltage set in the parameter “Maximum voltage " and the value calculated at
the previous point (at least 10 %), due to the increase in the voltage on the motor when it delivers the maximum power.
•
In extreme cases where the motor does not provide sufficient power for machining, it can be tried to improve the situation by
switching the operation to HighSpeed (see parameter "Motor Type“ on page 35).
6.5.7 Memoria Flash non protetta
If this message appears, the drive must be returned to the ALTER for a check.
6.5.8 Memory Flash error
This message appears after storing 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.
6.5.9 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 calculation of optional parameters“ on page 58).
Operations to be carried out:
•
Enter the optional motor parameters or perform the Autotune procedure as indicated in paragraph "Autotune for the
calculation of optional parameters“ on page 58.
6.5.10 Overrun Control Loop
If this message appears, the drive must be returned to the ALTER for a check.
6.5.11 Warning!!! Motor Overtemp.
This message appears if the motor is overheated and if the drive stop is enabled in case of motor over-temperature; When the message
appears it means that the PTC probe installed in the motor has just taken, when the time set in the " Drive FLT delay“ menu has
elapsed (see page 52), the drive will go in bulk. motor temperature control shall be carried out using the PTC probe to be integrated
into the motor under construction; It must be like a closed contact when the temperature range is correct and must be like an open
contact when the maximum motor temperature is exceeded (see section "Motor temperature” on page 65). To disable this alarm or
change some signaling modes you can use the "Motor overtemp“ menu (see page 52).
6.5.12 Wrong feedback PPR/Pole setup
This message may appear during the Autotune procedure (see paragraph "Autotune for the calculation of optional parameters“ on
page 58), and indicates that there is some incorrect setting in one or more of the following parameters:
•
Setting pulses/revolution encoder (see paragraph "Encoder Lines“ on page 37).
•
Pole motor (see paragraph "Motor pole“ on page 36).
•
Poli resolver (see paragraph "Resolver Pole Pair“ on page 37).
6.6 Diagnostic menu
On the LCD display there is a menu group called “Diagnostic " which brings together some important parameters that can be dis-
played in case of need.
For more information please refer to the appropriate paragraph "Diagnostic“ from page 45 with the full list of parameters.
Alter Elettronica s.r.l.
83
