Monitoring functions
Instruction handbook b maXX BM4400, BM4600, BM4700
Document No.: 5.12008.07 Baumüller Nürnberg GmbH
232
of 358
9.2
Power supply
voltage
- not available at power modules
This monitoring function checks, if the power supply voltage has a value within the adjust-
ed voltage range. If the value is lower, the warning „undervoltage power supply“ is gen-
erated. If the value is higher the warning „overvoltage power supply“ is generated.
Phase monitoring - not available at power modules
This monitoring function checks the three phases of the power supply voltage.
If a phase is missing, the warning „phase failure“ is reported to the controller. The reac-
tion time between the phase failure and the error message of the controller is max. 50 ms.
If all three phases are missing the warning „power supply failure“ is reported to the con-
troller. The reaction time between the power supply failure and the error message of the
controller is max. 50 ms. After reaching the adjusted delay time of parameter P0486 the
controller generates the error message „power supply failure“.
Ground fault This monitoring function checks, if there is a short-circuit between the motor terminals and
the ground. If a short-circuit is detected, there is immediately a pulse inhibit.
This monitoring function doesn’t exist by BM441X and BM442X.
Overcurrent This monitoring function checks, if the motor current is greater than 1.3 x output peak cur-
rent. It serves as „Disaster prevention“ in case of an output-sided short-circuit.
DC link This monitoring function checks the voltage of the DC link. In case the voltage is below a
value, which was internally specified (about 50 V under the set value), the warning DC
link undervoltage is generated by the controller. In case the voltage exceeds an adjusted
value about 820 V, the error „DC link overvoltage“ is signaled by the controller and the
pulses are inhibited immediately.
Overload
monitoring
This monitoring function checks the current calculated load thereupon, if the power unit
can provide the peak current at the moment. In case the peak current is not possible, the
message „Power unit overload“ is generated.
Temperature
device
internal space
This monitoring function checks the temperature in the internal space of the device.
m In case the temperature is higher than the warning threshold, the controller generates
a warning.
m In case the temperature is too high, the pulses are inhibited immediately.
Temperature
heat sink
This monitoring function checks the temperature of the heat sink.
m In case the temperature is higher than the warning threshold, the controller generates
a warning.
m In case the temperature is too high, the pulses are inhibited immediately.
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