Ferroli RMA2 HE VB 19.1, Инструкция по установке и эксплуатации, Страница: 40 / 48

40
Code Input on
inverter
Alarm Cause Troubleshooting
oH1
- Overheating
Heat sink
temperature too
high
1. Ensure that the ambient temperature falls within the specified temperature range
2. Make sure that the ventilation holes are not obstructed
3. Remove any foreign objects from the heatsinks and check for possible dirty heat sink fins
4. Check the fan and clean it
5. Provide enough spacing for adequate ventilation
oH2
- Overheating
Heat sink
temperature too
high
1. Ensure that the ambient temperature falls within the specified temperature range
2. Make sure that the ventilation holes are not obstructed
3. Remove any foreign objects from the heatsinks and check for possible dirty heat sink fins
4. Check the fan and clean it
5. Provide enough spacing for adequate ventilation
Lu
- Low voltage
The AC motor
drive detects
the the DC bus
voltage has
fallen below its
minimum value
1. Check whether the input voltage falls within the AC motor drive rated input voltage range
2. Check for abnormal load in motor
3. Check for correct wiring of input power to R-ST (for 3-phase models) without phase loss
oL
- Overload
The AC motor
drive detects
excessive drive
output current
1. Check whether the motor is overloaded
2. Reduce torque compensation setting in Pr.07.02
3. Use the next higher power AC motor drive model
oL1
- Overload 1
Internal
electronic
overload trip
1. Check for possible motor overload
2. Check electronic thermal overload setting
3. Use a higher power motor
4. Reduce the current level so that the drive output current does not exceed the value set by the
Motor Rated Current Pr.07.00
oL2
- Overload 2 Motor overload
1. Reduce the motor load
2. Adjust the over-torque detection setting to an appropriate setting (Pr.06.03 to Pr.06.05)
HPF1
-
CC (Current
clamp)
Internal error Return to factory
HPF2
-
OV hardware
error
Internal error Return to factory
HPF3
-
GFF hardware
error
Internal error Return to factory
HPF4
-
OC hardware
error
Internal error Return to factory
bb
-
External base
block
External base
block
1. When the external input terminal (B.B) is active, the AC motor drive output will be turned off
2. Deactivate the external input terminal (B.B) to operate the AC motor drive again
ocA
-
Over-current
during
acceleration
Over-current
during
acceleration
1. Short-circuit at motor output: Check for possible poor insulation at the output lines
2. Torque boost too high: Decrease the torque compensation setting in Pr.07.02
3. Acceleration Time too short: Increase the Acceleration Time
4. AC motor drive output power is too small: Replace the AC motor drive with the next higher power
model
ocd
-
Over-current
during
deceleration
Over-current
during
deceleration
1. Short-circuit at motor output: Check for possible poor insulation at the output line
2. Deceleration Time too short: Increase the Deceleration Time
3. AC motor drive output power is too small: Replace the AC motor drive with the next higher power
model
ocn
-
Over-current
during constant
speed operation
Over-current
during constant
speed operation
1. Short-circuit at motor output: Check for possible poor insulation at the output line
2. Sudden increase in motor loading: Check for possible motor stall
3. AC motor drive output power is too small: Replace the AC motor drive with the next higher power
model
EF
- External fault External fault
1. When multi-function input terminals (MI3-MI9) are set to external fault, the AC motor drive stops
output U, V and W
2. Give RESET command after fault has been cleared
INVERTER