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Unidrive M Regen Design Guide 317
Issue Number: 4
12.4 Trips, Sub-trip numbers
Table 12-3 Trip indications
Trip Diagnosis
An Input 1 Loss Analog input 1 current loss
28
An Input 1 Loss trip indicates that a current loss was detected in current mode on Analog input 1 (Terminal 5, 6). In 4-20 mA
and 20-4 mA modes loss of input is detected if the current falls below 3 mA.
Recommended actions:
• Check control wiring is correct
• Check control wiring is undamaged
• Check the Analog Input 1 Mode (07.007)
• Current signal is present and greater than 3 mA
An Input 2 Loss Analog input 2 current loss
29
An Input 2 Loss indicates that a current loss was detected in current mode on Analog input 2 (Terminal 7). In 4-20 mA and
20-4 mA modes loss of input is detected if the current falls below 3 mA.
Recommended actions:
• Check control wiring is correct
• Check control wiring is undamaged
• Check the Analog Input 2 Mode (07.011)
• Current signal is present and greater than 3 mA
An Output Calib Analog output calibration failed
219
The zero offset calibration of one or both of the analog outputs has failed. This indicates that the drive hardware has failed
or a voltage is applied to the output via a low impedance, possibly due to a wiring error. The failed output can be identified
by the sub-trip number.
Recommended actions:
• Check the wiring associated with analog outputs
• Remove all the wiring that is connected to analog outputs and perform a re-calibration by power cycling the drive.
• If trip persists replace the drive
App Menu Changed Customization table for an application module has changed
217
The App Menu Changed trip indicates that the customization table for an application menu has changed. The menu that
has been changed can be identified by the sub-trip number.
If more than one menu has changed the lowest menu has priority. Drive user parameters must be saved to prevent this trip
on the next power-up.
Recommended actions:
• Reset the trip and perform a parameter save to accept the new settings
Brake R Too Hot
Braking resistor overload timed out (I
2
t)
19
The Brake R Too Hot indicates that braking resistor overload has timed out. The value in Braking Resistor Thermal
Accumulator (10.039) is calculated using Braking Resistor Rated Power (10.030), Braking Resistor Thermal Time Constant
(10.031) and Braking Resistor Resistance (10.061). The Brake R Too Hot trip is initiated when Braking Resistor Thermal
Accumulator (10.039) reaches 100 %.
Recommended actions:
• Ensure the values entered in Pr 10.030, Pr 10.031 and Pr 10.061 are correct
• If an external thermal protection device is being used and the braking resistor software overload protection is not
required, set Pr 10.030, Pr 10.031 or Pr 10.061 to 0 to disable the trip.
Card Access NV Media Card Write fail
185
The Card Access trip indicates that the drive was unable to access the NV Media Card. If the trip occurs during the data
transfer to the card then the file being written may be corrupted. If the trip occurs when the data being transferred to the
drive then the data transfer may be incomplete. If a parameter file is transferred to the drive and this trip occurs during the
transfer, the parameters are not saved to non-volatile memory, and so the original parameters can be restored by powering
the drive down and up again.
Recommended actions:
• Check NV Media Card is installed / located correctly
• Replace the NV Media Card
Sub-trip Reason
1 Output 1 failed (Terminal 9)
2 Output 2 failed (Terminal 10)
Sub-trip Reason
1 Menu 18
2 Menu 19
3 Menu 20
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