Diagnostics - Emerson SKA1100025 Getting Started Manual

8

Diagnostics

Do not attempt to carry out internal repairs. Return a faulty drive to the supplier for repair.
WARNING
Trip code Condition
UV
DC bus under voltage
OV
DC bus over voltage
Drive output instantaneous over
OI.AC**
current
Braking resistor instantaneous over
OI.br**
current
O.SPd
Over speed
Auto tune stopped before
tunE
completion
It.br 2
I t on braking resistor
It.AC
2
I t on drive output current
IGBT over heat based on drives
O.ht1
thermal model
O.ht2
Over heat based on drives heatsink Heatsink temperature exceeds allowable maximum
th
Motor thermistor trip
O.Ld1*
User +24V or digital output overload Excessive load or short circuit on +24V output
Drive over-heat based on thermal
O.ht3
model
Analog input 1 current mode,
cL1
current loss
SCL
Serial communications loss time-out
EEF
Internal drive EEPROM trip
Input phase imbalance or input
PH
phase loss
Failure to measure motors stator
rS
resistance
CL.bt
Trip initiated from the control word
Power module rectifier over
O.ht4
temperature
C.dAt
SmartStick data does not exist
C.Acc
SmartStick read/write fail
C.rtg
SmartStick/drive rating change
O.cL
Overload on current loop input
HFxx
Hardware faults
trip
* The Enable/Reset terminal will not reset an O.Ld1 trip. Use the
Commander SK Getting Started Guide
Issue Number: 9
Low AC supply voltage
Low DC bus voltage when supplied by an external DC power supply
Deceleration rate set too fast for the inertia of the machine
Mechanical load driving the motor
Insufficient ramp times
Phase to phase or phase to ground short circuit on the drives output
Drive requires autotuning to the motor
Motor or motor connections changed, re-autotune drive to motor
Excessive braking current in braking resistor
Braking resistor value too small
Excessive motor speed (typically caused by mechanical load
driving the motor)
Run command removed before autotune complete
Excessive braking resistor energy
Excessive mechanical load
High impedance phase to phase or phase to ground short
circuit at drive output
Drive requires re-autotuning to motor
Overheat software thermal model
Excessive motor temperature
Overheat software thermal model
Input current less than 3mA when 4-20 or 20-4mA modes selected
Loss of communication when drive is under remote control
Possible loss of parameter values
(set default parameters (see Pr 29 on page 35))
One of the input phases has become disconnected from the
drive (applies to 200/400V three phase drives only, not dual
rated drives)
Motor too small for drive
Motor cable disconnected during measurement
Control word has initiated a trip
Power module rectifier temperature exceeds allowable
maximum
New/empty SmartStick being read
Bad connection or faulty SmartStick
Already programmed SmartStick read by a drive of a different rating
Input current exceeds 25mA
Internal drive hardware fault (see Commander SK Advanced
User Guide)
www.controltechniques.com
Possible cause
Stop/Reset key.
47