108/126
Siemens Building Technologies
SED2 variable speed drives
CM1U5192en
HVAC Products
Troubleshooting
01.2002
7.2 Error messages
7.2.1
Error code list
Error
Cause
Diagnosis & Remedy
Reaction
F0001
Overcurrent
Ø
Motor power (P0307) is greater than VSD
power (P0206).
Ø
Motor lead short circuit.
Ø
Earth faults.
Check the following:
1. Motor power (P0307)
≤
VSD power (P0206).
2. Cable length limits must not be exceeded.
3. Motor cable and motor must not have short circuits
or earth faults.
4. Motor parameters must match the motor in use.
5. Value of stator resistance (P0350) must be correct.
6. The motor must not be obstructed or overloaded.
Increase ramp-up time.
Reduce boost level
.
Off2
F0002
Overvoltage
Ø
DC link voltage (r0026) exceeds trip level
(P2172).
Ø
Overvoltage can be caused either by too
high main supply voltage or if motor is in
regenerative mode.
Ø
Regenerative mode can be caused by fast
ramp downs or if the motor is driven from
an active load.
Check the following:
1. The supply voltage (P0210) must lie within the limits
indicated on the rating plate.
2. The DC link voltage controller must be enabled
(P1240) and parameterized correctly.
3. The ramp-down time (P1121) must match the inertia
of load.
4.
The required braking power must lie within the
specified limits.
Note:
Higher inertia requires long ramp-up times; otherwise,
apply braking resistor.
Off2
F0003
Undervoltage
Ø
Mains supply failed.
Ø
Shock load outside the specified limits
.
Check the following:
1. The supply voltage (P0210) must lie within the limits
indicated on the rating plate.
2.
The supply voltage must not be susceptible to
temporary failures or voltage reductions outside
tolerance.
Off2
F0004
VSD
overtemperature
Ø
Ventilation is inadequate.
Ø
The fan is inoperative.
Ø
The ambient temperature is too high.
Check the following:
3. The fan must turn when the VSD is running.
4. The pulse frequency must be set to a lower value.
5. The ambient temperature could be higher than
specified for the VSD.
Off2
F0005
VSD I2T
Ø
The VSD is overloaded.
Ø
The duty cycle is outside the tolerance.
Ø
The Motor power (P0307) exceeds the
VSD power (P0206).
Check the following:
1.
The load cycle must lie within the limits specified.
2. Motor power (P0307)
≤
VSD power (P0206).
Off2
F0011
Motor
overtemperature
Ø
The motor is overloaded.
Check the following: Make sure that the load duty
cycles (temporary overload) lie within the limits
specified.
Off1
F0012
VSD temperature
signal lost
Ø
Wire breakage of the VSD temperature
sensor (heatsink).
Off2
F0015
Motor
temperature
signal lost
Ø
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
Ø
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 VSD.
Off2
F0021
Earth fault
Ø
The fault occurs if the sum of the phase
currents is higher than 5% of the nominal
VSD current.
Note
This error message occurs on VSDs with 3
current sensors, i.e., for VSDs of frame sizes
D to F.
Off2
