Nidec Unidrive M200 User Manual page 144

Safety Product Mechanical
information information installation
Trip
rS Measured resistance has exceeded the parameter range
The rS trip indicates that the measured stator resistance of the motor during an autotune test has exceeded the maximum
possible value of Stator Resistance (05.017).
If the measured value or a value written to this parameter by the user exceeds (V
where V
The stationary autotune is initiated using the autotune 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.
If the value is the result of a measurement made by the drive then sub-trip 0 is applied, or if it is because the parameter has
been changed by the user then sub-trip 3 is applied. During the stator resistance section of auto-tuning an additional test is
performed to measure the drive inverter characteristics to provide the compensation necessary for dead-times. If the
inverter characteristic measurement fails then sub-trip 2 is applied.
The reason for the trip can be identified by the sub-trip number.
33
Recommended actions:
• Ensure the stator resistance of the motor falls within the range of the drive model. The most likely cause of this trip is
trying to measure a motor much smaller than the drive rating. Ratio's of drive size to motor size of greater than 15:1 are
likely to lead to a problem.
• Check that a value has not been entered in the stator resistance for the presently selected motor map that exceeds the
allowed range.
• Check the motor cable / connections
• Check the integrity of the motor stator winding using an 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 = Fd) and verify the output current waveforms with an oscilloscope
• Replace the motor
SCL Control word watchdog has timed out
The SCL trip indicates that the control word has been enabled and has timed out
Recommended actions:
30
• Once Pr 06.042 bit 14 has been changed from 0 to 1 to enable the watchdog, this must be repeated every 1s or a SCL
trip will be initiated. The watchdog is disabled when the trip occurs and must be re-enabled if required when the trip is
reset.
SL.dF Option module in option slot 1 has changed
The SL.dF trip indicates that the option module in option slot 1 on the drive is a different type to that installed when
parameters were last saved on the drive. The reason for the trip can be identified by the sub-trip number.
Sub-trip
204
Recommended actions:
• Turn off the power, ensure the correct option module is installed in the option slot and re-apply the power.
• Confirm that the currently installed option module is correct, ensure option module parameters are set correctly and
perform a user save in Pr 00.
144
Electrical Getting Basic
installation started parameters
is the full scale DC bus voltage then this trip is initiated.
FS
Sub-trip
Stator resistance (5.017/21.012) is greater than (V
0
V is the full scale d.c. bus voltage; or the result is = 100 ohms.
FS
The measured Transient Inductance (5.024/21.014) is greater than 500 mH or the measured Stator
2
Inductance (05.025/21.024) is greater than 5000 mH.
A resistance value entered by the user is greater than (V
3 where V is the full scale d.c. bus voltage. Clear this trip by setting Stator Resistance (05.017) to a
FS
value that is in range and resetting the drive.
The measured stator resistance is not greater than the sub-trip 0 check but is outside the firmware
4
usable range for this drive size.
1 No module was installed previously
A module with the same identifier is installed, but the set-up menu for this option slot has been
2
changed, and so default parameters have been loaded for this menu.
A module with the same identifier is installed, but the applications menu for this option slot has been
3
changed, and so default parameters have been loaded for this menu.
A module with the same identifier is installed, but the set-up and applications menu for this option slot
4
have been changed, and so default parameters have been loaded for these menus.
>99 Shows the identifier of the module previously installed.
Running the NV Media
Optimization
motor Card
Diagnosis
Reason
/ √2) / Full Scale Current Kc (11.061), where
FS
Reason
Onboard Advanced
Diagnostics
PLC parameters
/√2) / Full Scale Current Kc (11.061),
FS
/ √2) / Full Scale Current Kc (11.061),
FS
Unidrive M200 / M201 Control User Guide
Issue Number: 2
UL Listing