Operating Instructions

Troubleshooting
Siemens Building Technologies, Inc. 99
Error Cause Diagnosis and Remedy
Drive
Reaction
A0505, SED2
I
2
t
Warning level exceeded. The
current supply is reduced if
parameter P0610=1.
Check that the duty cycle
lies within the limits
specified.
Motor power
(P0307)>SED2 power
(P0206).
—
A0506, SED2
duty cycle
Difference between the heat
sink temperature and IGBT
exceeds the warning levels.
Make sure that the load
duty cycles (temporary
overload) lie within the limits
specified.
—
A0511, Motor
over-
temperature I
2
t
• Motor is overloaded.
• Duty cycle is outside the
tolerance.
• Correct overload.
• Adjust duty cycle.
• Re-run quick
commissioning.
• Verify motor efficiency
setup via P0309 equals
motor nameplate data.
NOTE: Set P0003=3 and
P0010=1 and then advance
to P0309. Set efficiency to
motor rated efficiency, or
99. Advance to P3900=3.
—
A0520,
Rectifier over-
temperature
Warning level of the rectifier
heat sink temperature is
exceeded.
• Ambient temperature must
lie within the limits
specified.
• Load conditions and duty
cycle must lie within the
specified conditions.
• Fan must turn when the
SED2 is running.
—
A0523, SED2
output fault
On-phase is interrupted at the
SED2 output.
— —
A0541, Motor
data
identification
enabled
Motor data identification
(P1910) selected or running.
— —
A0600, RTOS
data loss
— — —