Emerson unidrive m200 - Page 255

Trip no.PS
Value 236
Short description No power stage detected by the Control board
This trip is generated if the control board cannot establish a communication link with the power stage within 5 seconds of powering up.
Trip None
Value 0
Short description No trip recorded
No trip. Trip log has a value of zero because there has been no trip since the drive left the factory or the trip log has been cleared by setting parameter 10.038 to 255.
Trip O.Ld1
Value 26
Short description Overload on 24V or digital outputs
This trip indicates that the total current drawn from the AI adaptor 24V or from the digital output has exceeded the limit.
Sub-trip Reason
1 Digital output or 24V supply load on control terminals is too high.
2 AI adptor 24V load is too high
Recommended actions:
Check total loads on digital outputs and 24V.
Check control wiring is correct.
Check output wiring is undamaged
Trip O.Spd
Value 7
Short description Motor over speed
In open loop mode, if PostRampReference (02.001) exceeds the threshold set in OverFrequencyThreshold (03.008) in either direction an Over Speed trip is produced. In RFC-A
mode, if EstimatedFrequency (03.002) exceeds the threshols set in OverFrequencyThreshold (03.008) either direction an Over Speed trip is produced.
If OverFrequencyThreshold (03.008) is set to 0.00 the threshold is then equal to 1.2 x VM_SPEED_FREQ_REF[MAX].
Recommended actions:
• Check that the motor is not being driven by another part of the system.
• Reduce the Frequency Controller Proportional Gain FrequencyControllerProportionalGainKp1 (03.010) to reduce the frequency overshoot (RFC-A mode only).
Trip Oh.dc
Value 27
Short description Overload on DC bus components
This trip indicates a DC bus component over temperature based on a firmware 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
PercentageOfd.c.LinkThermalTripLevel (07.035). If this parameter reaches 100% then an OHtdcbus trip is initiated. The drive will attempt to stop the motor before tripping. If the
motor does not stop in 10s then the drive will trip.
Source xx y zz
Control system 00 2 00: DC link thermal model gives OHtdcbus with sub-trip 0.
Recommended actions:
Check the AC supply voltage balance and levels
Check DC bus ripple level
Reduce duty cycle
Reduce motor load
Check the output current stability. If unstable:
Check the motor map settings with motor nameplate ( MotorRatedFrequency (05.006) , MotorRatedCurrent (05.007) , MotorRatedSpeed (05.008)
, MotorRatedVoltage (05.009) , MotorRatedPowerFactor (05.010) , and NumberOfMotorPoles (05.011) ).
Disconnect the load and complete a rotating auto-tune ( Auto-tune (05.012) = 2 ).
Disable slip compensation ( SlipCompensationLevel (05.027) = 0.0%).
Disable dynamic V to F operation ( FluxOptimisationSelect,DynamicVToFSelect (05.013) = 0).
Select fixed boost ( Open-loopVoltageMode (05.014) = Fixed (2)).
Select high stability space vector modulation ( HighStabilitySpaceVectorModulation (05.019) = 1).
Trip Oht.C
Value 219
Short description Control board over temperature
This trip indicates that a control stage over-temperature has been detected if CoolingFancontrol (06.045) = 0.
This trip causes the option module to go to standby and PotentialDriveDamageConditions (10.106) bit 1 to be set.
Recommended actions:
Increase ventilation by setting CoolingFancontrol (06.045) > 0.
Trip Oht.I
Value 21
Short description Inverter IGBT junction over temperature
This trip indicates that an IGBT junction over-temperature has been detected based on a firmware thermal model.
Recommended actions:
Unidrive M200 Parameter Reference Guide
Issue: 01.05.00.10
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