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Application Manual CDA3000
5 Software functions
5.3.9 _50 WA-Warning
messages
Warning messages are automatically reset as soon as the cause of the
warning no longer exists. The warning message is sent via the digital
outputs, and at the same time the actual value to be monitored for the
warning is also defined.
Warning messages
• Inadequate or excessive DC-link voltage triggers the undervoltage
(WLUV) or voltage overload (WLOV) warning as appropriate.
• The frequency warning relates to the current output frequency of the
inverter module.
• The status word 120-WRN is formed from the current warning mes-
sages.
Function Effect
• When programmable limit
values are exceeded for
various actual values of the
inverter module or of the
motor a warning is delivered.
• An impending fault in the
drive system is signalled in
good time to the system
control.
Parameter Function Value range FS Unit Online
120-WRN Status word, warnings 0000 .... FFFF Hex
500-WLTI Device temperature warning threshold 5 ... 100 100 °C
501-WLTD Interior temperature warning threshold 5 ... 80 80 °C
502-WLTM Motor temperature warning threshold 5 ... 250 180 °C
503-WLUV Undervoltage warning threshold 0 ... 800 0 V
504-WLOV Voltage overload warning threshold 0 ... 800 800 V
505-WLF Frequency warning threshold 0 ... 1600 0 Hz
506-WLIS Apparent current warning threshold 0 ... 999.95 999.95 A
Table 5.46 Parameters from subject area _50WA Warning messages
Explanatory notes
• Any warning can be delivered at any digital output.
• The motor temperature warning (WLTM) indicates a motor over-
load.
• The device temperature warning (WLTI) takes the temperature
value from the sensor on the heat sink on the power stage transis-
tors or, in the case of small inverter modules, directly from the
power stage module.
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