Operating Instructions

Service, maintenance and fault rectification
Fault rectification
8
98 | 118
Siemens A5E36496664A_f
Smart Infrastructure 2021-10-11
Number Cause Solution
A01910
F01910
Setpoint timeout: p2040 ≠ 0
ms and one of the following
causes:
● The bus connection is
interrupted
● The MODBUS master
is switched off
● Communications error
(CRC, parity bit, logical
error)
1. Establish the bus connection and switch on the
communication partners.
2. Possibly adapt p2040.
3. Set the PROFIBUS master to RUN.
A01920 PROFIBUS: Cyclic
connection interrupt
The cyclic connection to the PROFIBUS master is
interrupted.
 Establish the PROFIBUS connection and activate the
PROFIBUS master with cyclic operation.
A03520 Temperature sensor fault  Check that the sensor is correctly connected.
A05000
A05001
A05002
A05004
A05006
Power Module
overtemperature
1. Check that the ambient temperature is within the
defined limit values.
2. Check that the load conditions and duty cycle are
appropriately dimensioned.
3. Check whether there has been a cooling system
failure.
A07012 I2t Motor Module
overtemperature
1. Reduce the motor load.
2. Check the ambient temperature and the motor
ventilation.
3. Check the thermal time constant p0611.
4. Check the overtemperature fault threshold p0605.
A07015 Motor temperature sensor
alarm
1. Check that the sensor is correctly connected.
2. Check the parameter assignment (p0601).
A07321 Automatic restart active Automatic restart is active. During voltage recovery or
when remedying the causes of pending faults, the drive is
automatically switched back on.
1. Block the automatic restart (p1210 = 0).
2. Abort the restart process by removing the switch-on
command (p8040).
A07400 DC-link voltage maximum
controller (VDC_max
controller) active
If intervention by the controller is not desirable:
1. Increase the ramp-down times.
2. Deactivate the VDC_max controller (p1240 = 0 for
vector control, p1280 = 0 for V/f control).
A07409 V/f control, current limiting
controller active
The alarm is automatically canceled after one of the
following measures:
1. Increase the current limit (p0640).
2. Reduce the load.
3. Reduce the up ramps for the setpoint speed.
A07805 Drive: Power unit overload
I2t
1. Reduce the continuous load.
2. Adapt the duty cycle.
3. Check the assignment of rated currents of motor and
power unit.
A07850
A07851
A07852
External alarm 1 … 3 Parameters p2112, p2116 and p2117 determine the signal
sources for the external alarm 1… 3.
 The variable speed drive receives an alarm from an
external source. Rectify the cause of this alarm.
A07903 Motor speed deviation
1. Increase p2163 or p2166.
2. Increase the torque, current and power limits.