Siemens SINAMICS G110M - Page 361

Number Cause Remedy
A07400 V
DC_max
controller active If it is not desirable that the controller intervenes:
• Increase the ramp-down times.
• Deactivate the V
DC_max
controller (p1240 = 0 for vector control, p1280 =
0 for U/f control).
A07409 U/f control, current limiting control‐
ler active
The alarm automatically disappears after one of the following measures:
• Increase the current limit (p0640).
• Reduce the load.
• Slow down the up ramp for the setpoint speed.
F07426 Technology controller actual value
limited
• Adapt the limits to the signal level (p2267, p2268).
• Check the actual value scaling (p2264).
F07801 Motor overcurrent Check current limits (p0640).
Vector control: Check current controller (p1715, p1717).
U/f control: Check the current limiting controller (p1340 … p1346).
Increase acceleration ramp (p1120) or reduce load.
Check motor and motor cables for short circuit and ground fault.
Check motor for star-delta connection and rating plate parameterization.
Check power unit / motor combination.
Select 󹪞ying restart function (p1200) if switched to rotating motor.
A07805 Drive: Power unit overload I2t
• Reduce the continuous load.
• Adapt the load cycle.
• Check the assignment of rated currents of the motor and power unit.
F07806 Regenerative power limit exceeded Increase deceleration ramp.
Reduce driving load.
Use power unit with higher energy recovery capability.
For vector control, the regenerative power limit in p1531 can be reduced
until the fault is no longer activated.
F07807 Short circuit detected
• Check the converter connection on the motor side for any phase-phase
short-circuit.
• Rule out that line and motor cables have been interchanged.
A07850
A07851
A07852
External alarm 1 … 3 The signal for "external alarm 1" has been triggered.
Parameters p2112, p2116 and p2117 determine the signal sources for the
external alarm 1… 3.
Remedy: Remove the causes of these alarms.
F07860
F07861
F07862
External fault 1 … 3 Remove the external causes for this fault.
F07900 Motor blocked Check that the motor can run freely.
Check the torque limits (r1538 and r1539).
Check the parameters of the "Motor blocked" message (p2175, p2177).
F07901 Motor overspeed Activate precontrol of the speed limiting controller (p1401 bit 7 = 1).
Increase hysteresis for overspeed signal p2162.
Alarms, faults and system messages
9.7 List of alarms and faults
Distributed converter for SIMOGEAR geared motors
Operating Instructions, 10/2020, FW V4.7 SP13, A5E31298649B AL 359