Abb VFD acs300 ac drive (legacy model)

 Fault Indications 
   The ACS 300 continuously monitors itself for faulty operation. If a fault condition should arise, a fault indication is displayed, the fault LED illuminates and the ACS 300 waits for the operator to acknowledge the fault before resuming operation.

 Fault Resetting 
   An active fault can be reset either by pressing the keypad button, deactivating the Start input (DI1) or switching the input voltage off for a while. When the fault has been removed, the ACS 300 will resume normal operation. If the fault has not been removed, the ACS 300 will trip again. For automatic fault reset, refer to parameter RESTART # on page 66.
   Note! If the Start command is active and the fault has cleared, fault resetting starts the drive.
Some faults require you to cycle the power off and on once before the fault can be cleared. Proper fault reset action is given in chapter “Fault Tracing” on page 78.

 Fault Memory 

   When a fault is detected, it is stored so that it can be reviewed at a later date. The last three faults are stored on Page 1 parameter FAULT MEMORY.
Scrolling through the FAULT MEMORY does not erase the FAULT MEMORY. The oldest fault indication is automatically erased when a new fault occurs.
   Note! Undervoltage fault is stored in FAULT MEMORY if the fault occurs and automatic restart (RESTART #) is off. If the automatic restart is on, the undervoltage fault is not stored in the FAULT MEMORY unless the fault persists after restart.

Table 8-1 shows the displayed fault text (in the FAULT MEMORY);
the probable cause of the fault; and advice for correcting the fault.
 + Press once to reset fault.
 + Switch power off to reset fault.
Fault Memory can be erased by pressing simultaneously button and - button while reviewing Fault Memory. Erasing will clear all three fault records.

--------------
(2) OVERVOLTAGE
DC bus voltage has exceeded 130 % nominal voltage. Overvoltage is generally caused when the motor runs as a generator in drives where the load inertia is high and the deceleration time is set low. Too high mains voltage may also be the cause.

• In case of temporary supply voltage peak, reset and start.
• Use longer deceleration time or
• Use coasting stop function if it is compatible with the application.
• If short deceleration time is needed, use external Braking options.
• Check supply voltage (400 V)
--------------

(3) UNDERVOLTAGE
DC bus voltage has gone below 65 % of the nominal voltage. Most common reason for low voltage trip is failure in the mains supply, loss of phase or “brown out” condition.

• In case of temporary supply voltage drop, reset and start.
• Check mains inpu
--------------
(4) OVERCURRENT
Motor may be too small for the application. Motor current is too high due to
• high load inertia/short ramp times
• sudden load torque change
• stalling motor
• motor cabling or motor failure
• long motor cable

• Check ramp times
• Remove mechanical problem causing increased load torque.
• Check cables and motor
• Use optional output chokes
• Check dimensioning, use larger ACS 300 and motor if necessary
--------------
(5) LOW AI-SIGNAL
Analogue input less than 2 V/4mA and minimum has been set to 2 V/4 mA or Analogue Input less than selected “customised minimum”.
• Input reference has failed or control cable is broken. Check the reference circuit.
--------------
(6) PANEL COM ERR
Control Panel was removed when control was in Local mode. Due to safety reasons, the drive stops in this fault condition.

• Attach the Control Panel and reset the fault, then change to Remote mode and remove Panel.
• Use remote (wired) controls to reset the fault, then start and run with remote controls
• There might be a loose contact. Check the panel connection.
--------------
(10) BUS COMM FLT
Bus communication error
• Check bus connections
--------------
(7) UNIT FAULT

ACS 300 heatsink temperature too high.
CHECK:
• Heatsink dissipation
• Dust and dirt
• Air flow
• Fan
• Ambient temperature
• Reduce switching frequency.
• Check load current

Earth faults or short circuits. CHECK:
• Terminals
• Motor
• Cables

With frame size R2 high load inertia / short ramp
CHECK:
• Ramps times
• Remove mechanical problems
• Dimensioning
--------------
(8) UNIT FAULT
Inverter control unsuccessful.
• Switch power off.
• If fault persists, Contact our Abb product representative (contact information available on the Abb homepage)..
--------------
(9) MOTOR TEMP
ACS 300 has calculated that the motor is overheated. As the fault indication is based on calculated temperature rise, the motor may be within safe temperature range.
• Check the motor temperature. If it is within acceptable range, adjust TEMP LIM and I LIMIT and restart.
• Check the motor sizing with respect to the load.
--------------
(11) UNIT FAULT Charging circuit defective

(12) UNIT FAULT Failure in reading Analogue/ Digital input.

(13) UNIT FAULT Modulator error

(14) UNIT FAULT  EEPROM error

• Disconnect the ACS 300 from the mains. Wait 30 s.
(15) UNIT FAULTIdentification error Reconnect the ACS 300 to the mains and start.
--------------
THE PANEL DOES NOT FUNCTION
CHECK:
• the contrast of the panel
• the panel connection
----------------------------
THE DRIVE DOES NOT FUNCTION
CORRECTLY IN REMOTE CONTROL
CHECK:
• the polarity of the signals
• the position of switch S1
• the position of jumper X5
--------------
CONTROL PANEL Processor incompatible with Control Panel.
• Check the connection between the processor and the panel.
Control card error
• Contact our Abb product representative (contact information available on the Abb homepage)..
--------------
WRITE -> ACS ERROR VERSION MISMATCH
Mismatch of ACS 300 software.
Note! Parameter copying unsuccessful.
• Set the parameters manually
--------------
OUTPUT FREQUENCY < REFERENCE FREQUENCY
• wrong parameter values
• too much load
• wrong motor connection
CHECK:
• supply voltage (400 V series)
• I LIMIT high enough
• IR COMP not too high
• motor connection Star/Delta
• ACS 300 sizing with respect to the load

+ Abb ACS300 user manual (pdf) 1 mb

++ Dear visitor, you can discuss possible warnings and basic commissioning questions(s) you may encounter while using ABB products with our product representatives on the ABB homepage.

- However, the technical support we have declared here is only valid for the products sold in the automation avm. Please, we ask you to be sensitive in this matter.

-----

+ ACS 300 Fault Codes >>   

+ ACS 300 User manuals >>

++ ABB Home page (2)

+ VFD Main page  

-