Emerson unidrive m200 User Manual page 187

Safety Product Mechanical
information information installation
Trip
O.Ld1 Digital output overload
The O.Ld1 trip indicates that the total current drawn from 24 V user supply or from the digital output has exceeded the limit.
A trip is initiated if the following condition is met:
• Maximum output current from one digital output is 100 mA.
26
Recommended actions:
• Check total loads on digital outputs
• Check control wiring is correct
• Check output wiring is undamaged
O.SPd Motor frequency has exceeded the over frequency threshold
In open-loop mode, if the Post-ramp Reference (02.001) exceeds the threshold set in the Over Frequency Threshold
(03.008) in either direction, an O.SPd trip is produced. In RFC-A mode, if the Estimated Frequency (03.002) exceeds the
Over Frequency Threshold in Pr 03.008 in either direction, an O.SPd trip is produced. If Pr 3.008 is set to 0.00 the threshold
is then equal to 1.2 x the value set in Pr 1.006.
7
Recommended actions:
• Reduce the Frequency Controller Proportional Gain (03.010) to reduce the speed overshoot (RFC-A mode only)
• Check that a mechanical load is not driving motor
Oh.br Braking IGBT over-temperature
The Oh.br over-temperature trip indicates that braking IGBT over-temperature has been detected based on software
thermal model.
101
Recommended actions:
• Check braking resistor value is greater than or equal to the minimum resistance value
Oh.dc DC bus over temperature
The Oh.dc trip indicates a DC bus component over temperature based on a software thermal model. The drive includes a
thermal protection system to protect the DC bus components within the drive. This includes the effects of the output current
and DC bus ripple. The estimated temperature is displayed as a percentage of the trip level in Pr 07.035. If this parameter
reaches 100 % then an Oh.dc trip is initiated. The drive will attempt to stop the motor before tripping. If the motor does not
stop in 10 seconds the drive trips immediately.
Control system
Recommended actions:
• Check the AC supply voltage balance and levels
27
• Check DC bus ripple level
• Reduce duty cycle
• Reduce motor load
• Check the output current stability. If unstable;
Oht.C Control stage over-temperature
This trip indicates that a control stage over-temperature has been detected if Cooling Fan control (06.045) = 0.
219 Recommended actions:
Increase ventilation by setting Cooling Fan control (06.045) > 0.
Unidrive M200 / M201 User Guide
Issue Number: 4
Electrical Getting Basic
installation started parameters
Source xx
00
Check the motor map settings with motor nameplate (Pr 05.006, Pr 05.007, Pr 05.008, Pr 05.009, Pr 05.010,
Pr 05.011) – (All Modes)
Disable slip compensation (Pr 05.027 = 0) – (Open loop)
Disable dynamic V to F operation (Pr 05.013 = 0) - (Open loop)
Select fixed boost (Pr 05.014 = Fixed) – (Open loop)
Select high stability space vector modulation (Pr 05.019 = 1) – (Open loop)
Disconnect the load and complete a rotating autotune (Pr 05.012)
Reduce frequency loop gains (Pr 03.010, Pr 03.011, Pr 03.012) – (RFC-A)
Running the NV Media
Optimization
motor Card
Diagnosis
y zz
2 00 DC bus thermal model gives trip with sub-trip 0
Advanced
Technical data Diagnostics
parameters
Description
UL Listing
187