Unidrive M702 User Guide
267
Issue Number: 3
PSU 24V
24V internal power supply overload
9
The total user load of the drive and option modules has exceeded the internal 24 V power supply limit. The user load
consists of the drive digital outputs and main encoder supply.
Recommended actions:
•
Reduce the load and reset
•
Provide an external 24 V power supply on control terminal 2
•
Remove all option modules
Rating Mismatch
Power stage recognition: Multi module voltage or current rating mismatch
223
The
Rating Mismatch
trip indicates that there is a voltage rating or current rating mismatch in a multi-module drive system.
This trip is only applicable to modular drives that are connected in parallel. A mixture of power modules with different
voltage or current ratings within the same multi-module drive system is not allowed and will cause a Rating Mismatch trip.
Recommended action:
•
Ensure that all modules in a multi-modular drive system are of the same frame size and rating (voltage and current)
•
Hardware fault – Contact the supplier of the drive
Reserved
Reserved trips
01
94 -95
103 – 108
170 – 173
228 - 247
These trip numbers are reserved trip numbers for future use. These trips should not be used by the user application
programs.
Resistance
Measured resistance has exceeded the parameter range
33
The Resistance trip indicates that the measured stator resistance during an auto-tune test has exceeded the maximum
possible value of
Stator Resistance
(05.017).
The stationary auto-tune is initiated using the auto-tune function (Pr
05.012
) or in open loop vector mode (Pr
05.014
) on the
first run command after power up in mode 4 (Ur_I) or on every run command in modes 0 (Ur_S) or 3 (Ur_Auto). This trip
can occur if the motor is very small in comparison to the rating of the drive.
Recommended actions:
•
Check the motor cable / connections
•
Check the integrity of the motor stator winding using a insulation tester
•
Check the motor phase to phase resistance at the drive terminals
•
Check the motor phase to phase resistance at the motor terminals
•
Ensure the stator resistance of the motor falls within the range of the drive model
•
Select fixed boost mode (Pr
05.014
= Fixed) and verify the output current waveforms with an oscilloscope
•
Replace the motor
Slot4 Different
Ethernet interface in slot 4 has changed
254
The
Slot4 Different
trip indicates that the Ethernet interface in slot 4 has changed / not found. The reason for the trip can be
identified by the sub-trip number.
Recommended actions:
•
To confirm that the parameter changes detected is acceptable, reset the trip and perform a parameter save to ensure
that the trip doesn't occur the next time the drive is powered up.
•
If the trip persists - Contact the supplier of the drive.
Trip
Diagnosis
Trip Number
Description
01
Reserved resettable trip
94 -95
Reserved resettable trip
103 - 108
Reserved resettable trip
170 - 173
Reserved resettable trip
228 - 247
Reserved non-resettable trip
Sub-trip
Reason
1
No module was installed previously
2
A module with the same identifier is installed, but the set-up menu for this option slot has been
changed, and so default parameters have been loaded for this menu.
3
A module with the same identifier is installed, but the applications menu for this option slot has been
changed, and so default parameters have been loaded for this menu.
4
A module with the same identifier is installed, but the set-up and applications menu for this option slot
have been changed, and so default parameters have been loaded for these menus.
>99
Shows the identifier of the module previously installed.
Summary of Contents for Unidrive M702
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