Siemens SINUMERIK 840D sl Series Diagnostics Manual page 718

Overview of Alarms
Remedy: - check the line supply voltage
- check the line supply infeed and if necessary observe the fault messages of the line
supply infeed.
Note:
The ready signal of the infeed r0863 must be connected to the associated inputs p0864 of
the drives.
See also: p0210
230004 <location>Power module: Overtemperature heatsink AC inverter
Reaction: OFF2
Acknowledge: IMMEDIATELY
Cause: The temperature of the power module heatsink has exceeded the permissible limit value.
- insufficient cooling, fan failure.
- overload
- ambient temperature too high.
- pulse frequency too high.
Fault value (r0949):
Temperature [1 bit = 0.01 °C].
Remedy: - check whether the fan is running.
- check the fan elements
- check whether the ambient temperature is in the permissible range.
- check the motor load.
- reduce the pulse frequency if this is higher than the rated pulse frequency.
Notice:
This fault can only be acknowledged after this alarm threshold for alarm A05000 has been
fallen below.
See also: p1800
230005 <location>Power module: Overload I2T
Reaction: OFF2
Acknowledge: IMMEDIATELY
Cause: The power module was overloaded (r0036 = 100 %).
- the permissible rated power module current was exceeded for an inadmissibly long time.
- the permissible load duty cycle was not maintained.
Fault value (r0949, decimal):
I2t [100 % = 16384].
Remedy: - reduce the continuous load.
- adapt the load duty cycle.
- check the motor and power module rated currents.
See also: r0036, r0206, p0307
230006 <location>Power module: Thyristor control board
Reaction: OFF2
Acknowledge: IMMEDIATELY
Cause: The thyristor control board of the basic line module signals a fault.
- there is not line supply voltage.
- the line contactor is not closed.
- the line supply voltage is too low.
- line supply frequency outside the permissible range (45 ... 66 Hz).
- there is a DC link short-circuit.
- there is a DC link short-circuit (during the pre-charging phase).
- power supply thyristor control board outside the nominal range (5 ... 18 V) and supply
voltage >30 V.
- there is an internal fault in the thyristor control board.
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SINUMERIK 840D sl/840D/840Di/810D Diagnostics Guide (DA), 08/2005 Edition
© Siemens AG, 2005. All rights reserved
08/2005