{"id":365,"date":"2022-07-28T14:30:00","date_gmt":"2022-07-28T18:30:00","guid":{"rendered":"http:\/\/www.mroelectric.com\/blog\/?p=365"},"modified":"2024-03-26T11:45:06","modified_gmt":"2024-03-26T15:45:06","slug":"micromaster-420-faults-and-alarms","status":"publish","type":"post","link":"https:\/\/www.mroelectric.com\/blog\/micromaster-420-faults-and-alarms\/","title":{"rendered":"Siemens Micromaster 420 Faults and Alarms"},"content":{"rendered":"

Siemens Micromaster 420: Troubleshooting Faults and Alarms<\/strong><\/h2>\n

A blog we posted earlier this week about the Micromaster 420<\/a> troubleshooting referenced the Faults and Alarms list for the Micromaster series, so we decided that it would make sense to make the list of Micromaster 420 Faults and Alarms directly available. This is from the corresponding manual for the Micromaster 420 series, but it is buried within the manual which most people most likely don’t even have. Hopefully, this helps with your troubleshooting of Siemens drive fault codes and alarms.<\/p>\n

Be sure to also check out our list of Siemens Micromaster 440 fault codes<\/a> and our article touching on Siemens Simodrive E\/R Module Fault Troubleshooting<\/a>, along with other Siemens series coverage.<\/p>\n

If you\u2019re looking to purchase a Siemens Micromaster drive, view our 420 Micromaster Drives<\/a> in stock. For more information or to request a quote, please call 800-691-8511<\/strong> or email sales@mroelectric.com.<\/strong> We also provide pre-priced Micromaster 420 Repairs<\/a>.<\/p>\n

<\/p>\n

MICROMASTER 420 Fault Messages<\/strong><\/h3>\n

In the event of a failure, the inverter switches off and a fault code appears on the
display.
NOTE
To reset the fault code, one of three methods listed below can be used:
1. Cycle the power to the drive.
2. Press the\u00a0\u00a0 button on the BOP or AOP.
3. Via Digital Input 3 (default setting)<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Fault<\/strong><\/td>\nPossible\u00a0 Causes<\/strong><\/td>\nDiagnose & Remedy<\/strong><\/td>\nReaction<\/strong><\/td>\n<\/tr>\n
F0001
Overcurrent<\/td>\n		\u2022\u00a0 \u00a0 Motor power does not correspond
to the inverter power
\u2022\u00a0 \u00a0 Motor lead short circuit
\u2022\u00a0 \u00a0 Earth fault<\/td>\n		Check the following:
1. \u00a0\u00a0\u00a0\u00a0Motor power (P0307) must correspond to inverter power (P0206)
2. \u00a0\u00a0\u00a0\u00a0Cable length limits must not be exceeded
3. \u00a0\u00a0\u00a0\u00a0Motor cable and motor must have no short- circuits or earth faults
4. \u00a0\u00a0\u00a0\u00a0Motor parameters must match the motor in use
5. \u00a0\u00a0\u00a0\u00a0Value of stator resistance (P0350) must be correct
6. \u00a0\u00a0\u00a0\u00a0Motor must not be obstructed or overloaded
\u2022\u00a0 \u00a0 Increase the ramp time
\u2022\u00a0 \u00a0 Reduce the boost level<\/td>\n		OFF2<\/td>\n<\/tr>\n
F0002
Overvoltage<\/td>\n		\u2022\u00a0 \u00a0 \u00a0 DC-link voltage (r0026) exceeds
trip level (P2172)
\u2022\u00a0 \u00a0 \u00a0 Overvoltage can be caused
either by too high main supply
voltage or if motor is in regenerative mode
\u2022\u00a0 \u00a0 Regenerative mode can be cause
by fast ramp downs or if the
motor is driven from an active load<\/td>\n		Check the following:
1. \u00a0\u00a0\u00a0\u00a0Supply voltage (P0210) must lie within limits indicated on rating plate
2. \u00a0\u00a0\u00a0\u00a0DC-link voltage controller must be enabled
(P1240) and parameterized properly
3. \u00a0\u00a0\u00a0\u00a0Ramp-down time (P1121) must match inertia of load<\/td>\n		OFF2<\/td>\n<\/tr>\n
F0003
Undervoltage<\/td>\n		\u2022\u00a0 \u00a0 \u00a0 Main supply failed
\u2022\u00a0 \u00a0 Shock load outside specified
limits<\/td>\n		Check the following:
1. \u00a0\u00a0Supply voltage (P0210) must lie within limits indicated on rating plate
2. \u00a0\u00a0Supply must not be susceptible to temporary failures or voltage reductions<\/td>\n		OFF2<\/td>\n<\/tr>\n
F0004
Inverter Over- temperature<\/td>\n		\u2022\u00a0 \u00a0 Ambient temperature outside of
limits,
\u2022\u00a0 \u00a0 Fan failure<\/td>\n		Check the following:
1. \u00a0\u00a0\u00a0\u00a0Fan must turn when inverter is running
2. \u00a0\u00a0\u00a0\u00a0Pulse frequency must be set to default value
3. \u00a0\u00a0\u00a0\u00a0Air inlet and outlet points are not obstructed Ambient temperature could be higher than specified for the inverter<\/td>\n		OFF2<\/td>\n<\/tr>\n
F0005
Inverter I2t<\/td>\n		\u2022\u00a0 \u00a0 \u00a0 Inverter overloaded
\u2022\u00a0 \u00a0 Duty cycle too demanding
\u2022\u00a0 \u00a0 Motor power (P0307) exceeds
inverter power capability (P0206)<\/td>\n		Check the following:
1. \u00a0\u00a0\u00a0\u00a0Load duty cycle must lie within specified limits
2. \u00a0\u00a0\u00a0\u00a0Motor power (P0307) must match inverter power (P0206)<\/td>\n		OFF2<\/td>\n<\/tr>\n
F0011
Motor Over- temperature I2t<\/td>\n		\u2022\u00a0 \u00a0 \u00a0 Motor overloaded
\u2022\u00a0 \u00a0 \u00a0 Motor data incorrect
\u2022\u00a0 \u00a0 \u00a0 Long time period operating at
low speeds<\/td>\n		1. \u00a0\u00a0\u00a0\u00a0Check motor data
2. \u00a0\u00a0\u00a0\u00a0Check loading on motor
3. \u00a0\u00a0\u00a0\u00a0Boost settings too high
(P1310,P1311, P1312)
4. \u00a0\u00a0\u00a0\u00a0Check parameter for motor\u00a0 thermal time constant
5. \u00a0\u00a0\u00a0\u00a0Check parameter for motor I2t warning level<\/td>\n		OFF1<\/td>\n<\/tr>\n
F0041
Stator resistance measurement failure<\/td>\n		Stator resistance measurement failure<\/td>\n1.\u00a0 \u00a0Check if the motor is connected to the inverter
2.\u00a0 \u00a0Check that the motor data has
been entered correctly<\/td>\n		OFF2<\/td>\n<\/tr>\n
F0051
Parameter
EEPROM Fault<\/td>\n		Reading or writing of the non-volatile parameter storage has failed<\/td>\n1.\u00a0 \u00a0Factory reset and new parameterization
2.\u00a0 \u00a0Change inverter<\/td>\n		OFF2<\/td>\n<\/tr>\n
F0052
Powerstack
Fault<\/td>\n		Reading of the powerstack information has failed or the data is
invalid<\/td>\n		Change inverter<\/td>\nOFF2<\/td>\n<\/tr>\n
F0060
Asic \u00a0Timeout<\/td>\n		Internal communications failure<\/td>\n1.\u00a0 \u00a0Acknowledge fault
2.\u00a0 \u00a0Change inverter if repeated<\/td>\n		OFF2<\/td>\n<\/tr>\n
F0070
Communicatio ns board setpoint error<\/td>\n		No setpoint received from
communications board during telegram off time<\/td>\n		1.\u00a0 \u00a0Check connections to the
communications board
2.\u00a0 \u00a0Check the master<\/td>\n		OFF2<\/td>\n<\/tr>\n
F0071
No Data for USS (RS232 link) during Telegramm \u00a0Off Time<\/td>\n		No response during telegram off time
via USS (BOP link)<\/td>\n		1.\u00a0 \u00a0Check connections to the
communications board
2.\u00a0 \u00a0Check the master<\/td>\n		OFF2<\/td>\n<\/tr>\n
F0072
No Data from USS (RS485 link) during Telegram \u00a0Off Time<\/td>\n		No response during telegram off time
via USS (COM link)<\/td>\n		1.\u00a0 \u00a0Check connections to the
communications board
2.\u00a0 \u00a0Check the master<\/td>\n		OFF2<\/td>\n<\/tr>\n
F0080
Analogue input \u00a0– lost input \u00a0signal<\/td>\n		\u2022\u00a0 \u00a0 \u00a0Broken wire
\u2022\u00a0 \u00a0Signal out of limits<\/td>\n		Check connection to analogue input<\/td>\nOFF2<\/td>\n<\/tr>\n
F0085
External \u00a0Fault<\/td>\n		External fault is triggered via terminal
inputs<\/td>\n		Disable terminal input for fault trigger<\/td>\nOFF2<\/td>\n<\/tr>\n
F0101
Stack
Overflow<\/td>\n		Software error or processor failure<\/td>\n1.\u00a0 \u00a0Run self test routines
2.\u00a0 \u00a0Change inverter<\/td>\n		OFF2<\/td>\n<\/tr>\n
F0221
PI Feedback below \u00a0mini- mum value<\/td>\n		PID Feedback below minimum value
P2268<\/td>\n		1.\u00a0 \u00a0Change value of P2268
2.\u00a0 \u00a0Adjust feedback gain<\/td>\n		OFF2<\/td>\n<\/tr>\n
F0222
PI Feedback above maximum
value<\/td>\n		PID Feedback above maximum value
P2267<\/td>\n		1.\u00a0 \u00a0Change value of P2267
2.\u00a0 \u00a0Adjust feedback gain<\/td>\n		OFF2<\/td>\n<\/tr>\n
F0450
(Service mode only)
BIST Tests
Failure<\/td>\n		Fault value
1\u00a0\u00a0 \u00a0Some of the power section tests have failed
2\u00a0\u00a0 \u00a0Some of the control board tests have failed
4\u00a0\u00a0 \u00a0Some of the functional tests
have failed
8\u00a0\u00a0 \u00a0Some of the IO module tests have failed
16 \u00a0The Internal RAM has failed its check on power-up<\/td>\n		1.\u00a0 \u00a0Inverter may run but certain
actions will not function correctly
2.\u00a0 \u00a0Replace inverter<\/td>\n		OFF2<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u00a0MICROMASTER 420 Alarm Messages<\/strong><\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Fault<\/td>\nPossible Causes<\/td>\nDiagnose \u00a0& Remedy<\/td>\nReaction<\/td>\n<\/tr>\n
A0501
Current \u00a0Limit<\/td>\n		\u2022\u00a0 \u00a0 \u00a0Motor power does not
correspond to the inverter power
\u2022\u00a0 \u00a0 \u00a0Motor leads are too short
\u2022\u00a0 \u00a0Earth faults<\/td>\n		1.\u00a0\u00a0\u00a0 \u00a0Check whether the motor power
corresponds to the inverter power
2.\u00a0\u00a0\u00a0 \u00a0Check that the cable length limits have not been exceeded
3.\u00a0\u00a0\u00a0 \u00a0Check motor cable and motor for short- circuits and earth faults
4.\u00a0\u00a0\u00a0 \u00a0Check whether the motor parameters
correspond with the motor being used
5.\u00a0\u00a0\u00a0 \u00a0Check the stator resistance
6.\u00a0\u00a0\u00a0 \u00a0Increase the ramp-up-time
7.\u00a0 \u00a0Reduce the boost
8.\u00a0 \u00a0Check whether the motor is obstructed or overloaded<\/td>\n		—<\/td>\n<\/tr>\n
A0502
Overvoltage limit<\/td>\n		\u2022\u00a0 \u00a0Mains supply too high
\u2022\u00a0 \u00a0Load regenerative
\u2022\u00a0 \u00a0Ramp-down time too short<\/td>\n		1.\u00a0\u00a0\u00a0 \u00a0Check that mains supply voltage is within allowable range
2.\u00a0\u00a0\u00a0 \u00a0Increase ramp down times
Note:
Vdc-max controller is active, ramp-down times will be automatically increased<\/td>\n		—<\/td>\n<\/tr>\n
A0503
Undervoltage
Limit<\/td>\n		\u2022\u00a0 \u00a0Mains supply too low
\u2022\u00a0 \u00a0Short mains interruption<\/td>\n		Check main supply voltage (P0210)<\/td>\n—<\/td>\n<\/tr>\n
A0504
Inverter \u00a0Over- temperature<\/td>\n		Warning level of inverter heat-sink
temperature (P0614) is exceeded, resulting in pulse frequency reduction and\/or output frequency reduction (depending on parametrization in (P0610)<\/td>\n		1.\u00a0\u00a0\u00a0 \u00a0Check if ambient temperature is within
specified limits
2.\u00a0\u00a0\u00a0 \u00a0Check load conditions and duty cycle
3.\u00a0 \u00a0Check if fan is turning when drive is running<\/td>\n		—<\/td>\n<\/tr>\n
A0505
Inverter \u00a0I2t<\/td>\n		Warning level is exceeded; current
will be reduced if parameterized
(P0610 = 1)<\/td>\n		Check if duty cycle is within specified limits<\/td>\n—<\/td>\n<\/tr>\n
A0506
Inverter \u00a0Duty
Cycle<\/td>\n		Heatsink temperature and thermal junction model are outside of
allowable range<\/td>\n		Check if duty cycle are within specified limits<\/td>\n—<\/td>\n<\/tr>\n
A0511
Motor \u00a0Over- temperature I2t<\/td>\n		Motor overloaded<\/td>\nCheck the following:
1.\u00a0\u00a0\u00a0 \u00a0P0611 (motor i2t time constant) should be set to appropriate value
2.\u00a0\u00a0\u00a0 \u00a0P0614 (Motor i2t overload warning level)
should be set to suitable level
3.\u00a0\u00a0\u00a0 \u00a0Are long periods of operation at low speed occuring
4.\u00a0\u00a0\u00a0 \u00a0Check that boost settings are not too high<\/td>\n		—<\/td>\n<\/tr>\n
A0541
Motor \u00a0Data Identification Active<\/td>\n		Motor data identification (P1910)
selected or running<\/td>\n		Wait until motor identification is finished<\/td>\n—<\/td>\n<\/tr>\n
A0600
RTOS Overrun
Warning<\/td>\n		Software error<\/td>\n\u00a0<\/td>\n\u00a0<\/td>\n<\/tr>\n
A0700
CB warning 1<\/td>\n		CB (communication board) specific<\/td>\nSee CB user manual<\/td>\n—<\/td>\n<\/tr>\n
A0701
CB warning 2<\/td>\n		CB (communication board) specific<\/td>\nSee CB user manual<\/td>\n—<\/td>\n<\/tr>\n
A0702
CB warning 3<\/td>\n		CB (communication board) specific<\/td>\nSee CB user manual<\/td>\n—<\/td>\n<\/tr>\n
A0703
CB warning 4<\/td>\n		CB (communication board) specific<\/td>\nSee CB user manual<\/td>\n—<\/td>\n<\/tr>\n
A0704
CB warning 5<\/td>\n		CB (communication board) specific<\/td>\nSee CB user manual<\/td>\n—<\/td>\n<\/tr>\n
A0705
CB warning 6<\/td>\n		CB (communication board) specific<\/td>\nSee CB user manual<\/td>\n—<\/td>\n<\/tr>\n
A0706
CB warning 7<\/td>\n		CB (communication board) specific<\/td>\nSee CB user manual<\/td>\n—<\/td>\n<\/tr>\n
A0707
CB warning 8<\/td>\n		CB (communication board) specific<\/td>\nSee CB user manual<\/td>\n—<\/td>\n<\/tr>\n
A0708
CB warning 9<\/td>\n		CB (communication board) specific<\/td>\nSee CB user manual<\/td>\n—<\/td>\n<\/tr>\n
A0709
CB warning 10<\/td>\n		CB (communication board) specific<\/td>\nSee CB user manual<\/td>\n—<\/td>\n<\/tr>\n
A0710
CB communi- cation \u00a0error<\/td>\n		Communication with CB (communication board) is lost<\/td>\nCheck CB hardware<\/td>\n—<\/td>\n<\/tr>\n
A0711
CB configu- ration \u00a0error<\/td>\n		CB (communication board) reports a
configuration error<\/td>\n		Check CB parameters<\/td>\n—<\/td>\n<\/tr>\n
A0910
Vdc-max controller de- activated<\/td>\n		Vdc max controller has been de-
activated, since controller is not capable of keeping DC-link voltage (r0026) within limits (P2172)
\u2022\u00a0 \u00a0 \u00a0Occurs if main supply voltage
(P0210) is permanently too high
\u2022\u00a0 \u00a0 \u00a0Occurs if motor is driven by an
active load, causing motor to
goes into regenerative mode
\u2022\u00a0 \u00a0Occurs at very high load inertias,
when ramping down<\/td>\n		Check the following:
1.\u00a0\u00a0\u00a0 \u00a0Input voltage (P0756) lies within range?
2.\u00a0\u00a0\u00a0 \u00a0Load must match
In certain cases apply braking resistor<\/td>\n		—<\/td>\n<\/tr>\n
A0911
Vdc-max controller active<\/td>\n		Vdc max controller is active; so ramp- down times will be increased
automatically to keep DC-link voltage
(r0026) within limits (P2172)<\/td>\n		1. Check parameter inverter input voltage
2. Check ramp-down times<\/td>\n		—<\/td>\n<\/tr>\n
A0912
Vdc-min controller active<\/td>\n		Vdc min controller will be activated if
DC-link voltage (r0026) falls below minimum level (P2172)
\u2022\u00a0 \u00a0 \u00a0The kinetic energy of the motor
is used to buffer the DC-link
voltage, thus causing deceleration of the drive!
\u2022\u00a0 \u00a0 \u00a0So short mains failures do not
necessarily lead to an
undervoltage trip<\/td>\n		\u00a0<\/td>\n—<\/td>\n<\/tr>\n
A0920
ADC parameters not set properly<\/td>\n		ADC parameters should not be set to
identical values, since this would produce illogical results.
\u2022\u00a0 \u00a0 \u00a0Index 0:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0Parameter
settings for output
identical
\u2022\u00a0 \u00a0 \u00a0Index 1:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0Parameter
settings for input
identical
\u2022\u00a0 \u00a0 \u00a0Index 2:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0Parameter
settings for input do not
correspond to ADC type<\/td>\n		Analogue input parameters should not be set to
the same value as each other<\/td>\n		—<\/td>\n<\/tr>\n
A0921
DAC parameters not set
properly<\/td>\n		DAC parameters should not be set to identical values, since this would
produce illogical results.
\u2022\u00a0 \u00a0 \u00a0Index 0: Parameter settings for
output identical
\u2022\u00a0 \u00a0 \u00a0Index 1: Parameter settings for
input identical
\u2022\u00a0 \u00a0 \u00a0Index 2: Parameter settings for
output do not correspond to DAC type<\/td>\n		Analogue Output parameters should not be set to the same value as each other<\/td>\n—<\/td>\n<\/tr>\n
A0922
No load applied \u00a0to inverter<\/td>\n		\u2022\u00a0 \u00a0 \u00a0No Load is applied to the inverter
\u2022\u00a0 \u00a0 \u00a0As a result, some functions may
not work as under normal load
conditions
Low output voltage eg when 0 boost applied at 0 Hz<\/td>\n		1.\u00a0 \u00a0Check that load is applied to the inverter
2.\u00a0 \u00a0Check motor parameters correspond to motor attached
3.\u00a0 \u00a0As a result, some functions may not work correctly, because there is no normal load condition<\/td>\n		—<\/td>\n<\/tr>\n
A0923
Both JOG Left and JOG Right are requested<\/td>\n		Both JOG right and JOG left
(P1055\/P1056) have been requested. This freezes the RFG output frequency at its current value. JOG right and JOG left signals active together<\/td>\n		Make sure that JOG right and JOG left signals are not applied simultaneously<\/td>\n—<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n

Troubleshooting with the BOP<\/h2>\n\n\n\n

Warnings and faults are displayed on the BOP with Axxx and Fxxx respectively. The individual messages are shown in the Parameter list.<\/p>\n\n\n\n

If the motor fails to start when the ON command has been given:<\/p>\n\n\n\n