Troubleshooting; With The Status Display Panel; With Operator Panels (Bop & Aop) - Siemens MICROMASTER 420 Getting Started Manual

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Troubleshooting

7.1

With the Status Display Panel

The operating status of the inverter is indicated by the green and red LEDs on
the Status Display Panel. These LEDs indicate the following warnings and fault
states
.
Green Yellow Priority Drive Status Definitions
Display
OFF OFF 1 Mains Not present
OFF ON 8 Inverter Fault - other than ones listed below
ON OFF 13 Inverter Running
ON ON 14 Ready to run - standby
OFF Flashing -R1 4 Fault Overcurrent
Flashing -R1 OFF 5 Fault Overvoltage
Flashing -R1 ON 7 Fault Motor Overtemperature
ON Flashing -R1 8 Fault Inverter overtemperature
Flashing –R1 Flashing -R1 9 Warning Current limit-Both LEDs Flashing same
time
Flashing -R1 Flashing -R1 11 Other Warnings- Both LEDs Flashing Alternately
Flashing -R1 Flashing -R2 6/10 Undervoltage Trip/Undervoltage warning
Flashing -R2 Flashing -R1 12 Drive is not in ready state--Display State>0
Flashing –R2 Flashing –R2 2 ROM Failure- Both LEDs Flashing same time
Flashing –R2 Flashing –R2 3 RAM Failure- Both LEDs Flashing Alternately
R1- On time 900mSec.
R2- On time 300mSec.
7.2 With Operator Panels (BOP & AOP)
The following fault codes for the Basic Operator and Advanced Operator Panels
indicate the status of the inverter:
BOP/AOP fault code Status of MICROMASTER 420 Inverter
F0001 Overcurrent
F0002 Overvoltage
F0004 Inverter overtemperature (internal PTC)
F0011 Motor overtemperature by I²t calculation
Overcurrent (Fault F0001)
Ø Ramp up time set too short. Increase P1120 accordingly.
Ø Voltage boost too high. Reduce parameters P1310, P1311 and P1312 to
prevent excessive magnetization of the motor.
Overvoltage (Fault F0002)
Ø
Ramp down time set too short. Increase P1121 accordingly.
Note
It is possible that the motors' performance may be affected at low frequencies if
parameter P1310 falls under 50 (default value).
For further fault code designations, please refer to the MICROMASTER 420
Operating Instructions on the CD included with the inverter.
Getting Started Guide – September 2000
6SE6400-5AB00-0BP0
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