Operating Instructions

SED2 VFD Operation & Maintenance Manual
70 Siemens Building Technologies, Inc.
Error Cause Diagnosis/Remedy Reaction
F0004, SED2
Overtemperature
• Ventilation is
inadequate.
• The fan is inoperative.
• The ambient
temperature is too high.
Check the following:
• The fan must turn when the SED2 is
running.
• The pulse frequency must be set to
a lower value.
• The ambient temperature could be
higher than specified for the SED2.
Off2
F0005, SED2 I2T
• The SED2 is
overloaded.
• The duty cycle is
outside the tolerance.
• The motor power
(P0307) exceeds the
SED2 power (P0206).
Check the following:
• The load cycle must lie within the
limits specified.
• 2Motor power (P0307) SED2 power
(P0206).
Off2
F0011, Motor
overtemperature
• The motor is overloaded
Make sure that the load duty cycle (temporary
overload) lies within the limits specified.
Off1
F0012, SED2
temperature
signal lost
• Wire breakage of the
SED2 temperature
sensor (heat sink).
Off2
F0015, Motor
temperature
signal lost
• Breakage or short-
circuit of the motor
temperature sensor.
• If a signal loss is
detected, temperature
monitoring switches to
monitoring the thermic
motor image.
Off2
F0020, 1 phase
for mains supply
missing
• One of the 3 phases for
the mains supply
voltage is missing.
Check the wiring of the 3 phases at the
supply voltage input of the SED2.
Off2
F0021, ground
fault
• The ground fault occurs
if the sum of the phase
currents is higher than
5% of the nominal
SED2 current.
NOTE: This error message
occurs on SED2 drives with three
current sensors; that is, for SED2
drives of frame sizes D to F.
Off2