Siemens SINUMERIK 840D sl Series Diagnostics Manual page 682

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Overview of Alarms
206210
<location>Infeed: Summed current too high
Reaction:
OFF2 (OFF1)
Acknowledge:
IMMEDIATELY (POWER ON)
Cause:
Smoothed sum of the phase currents (i1 + i2 + i3) greater than 4 % of the maximum power
module current (r0209).
Possible causes:
- the DC link has a ground fault that results in a high summed current (r0069.6). The DC
component in the line currents can damage/destroy the power module, commutating
reactor or line filter!
- the zero point calibration of the current measurement was not carried-out (p3491,
A06602).
- defective current measurement in the power module.
Fault value (r0949, floating point):
Smoothed sum of the phase currents.
Remedy:
- check the DC link for a low-ohmic or high-ohmic ground fault and if one is present,
remove.
- increase the monitoring time of the current-offset measurement (p3491).
- if required, replace the power module.
206215
<location>Infeed: Summed current high
Reaction:
NONE
Acknowledge:
NONE
Cause:
Smoothed sum of the phase currents (i1 + i2 + i3) greater than 3 % of the maximum power
module current (r0209).
Possible causes:
- the DC link has a ground fault that results in a high summed current (r0069.6). The DC
component in the line currents can damage/destroy the power module, commutating
reactor or line filter!
- the zero point calibration of the current measurement was not carried-out (p3491,
A06602).
- defective current measurement in the power module.
Alarm value (r2124, floating point):
Smoothed sum of the phase currents.
Remedy:
- check the DC link for a low-ohmic or high-ohmic ground fault and if one is present,
remove.
- increase the monitoring time of the current-offset measurement (p3491).
- if required, replace the power module.
206250
<location>Infeed: Defective capacitor(s) in at least one phase of line filter
Reaction:
NONE
Acknowledge:
NONE
Cause:
A change in the line filter capacitance was detected in at least line phase.
The voltages and phase currents of the line filter, measured using a voltage sensing
module (VSM), indicated a deviation of the filter capacitances from the value
parameterized in p0221.
A change or a defect of the line filter capacitors results in a shift of the resonant frequencies
and can result in severe damage to the drive system.
Alarm value (r2124, floating point):
The calculated actual capacitance in µF (rounded-off to an integer number).
The 1st decimal point specifies the number of the phase (1, 2, 3) where the capacitance
deviates from the specified value.
2-682
SINUMERIK 840D sl/840D/840Di/810D Diagnostics Guide (DA), 08/2005 Edition
© Siemens AG, 2005. All rights reserved
08/2005

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