Monitoring functions
Operation manual
b maXX
BM4100 (NWR)
Document no.: 5.04052.09
Baumüller Nürnberg GmbH
88
9.2
Earth fault
This monitoring function checks, if a short-circuit is existing between the mains terminals
and earth. If a short-circuit is ascertained, pulse enable immediately occurs.
Overcurrent
This monitoring function checks, if the mains current is greater than 1.3 x input peak cur-
rent. It serves as „Disaster prevention“ in case of an output-sided short-circuit.
DC-link
This monitoring function checks, if the DC-link voltage has a value within the adjusted
voltage range. If the value is lower, the warning/the error "DC-link undervoltage“ is indi-
cated. If the value is higher the warning "overvoltage mains“ is indicated. As long as the
device has not yet been released, an over-/undervoltage always is signaled by "warning"
In released status an over-/undervoltage is signaled as "error" and an immediate pulse
inhibit occurs.
Ixt-
threshold
This monitoring function checks the heatsink temperature as well as the current load
thereupon, if the power unit at the time can supply the peak current or the maximum nom-
inal current. In case the peak current is not possible, the message "Ixt-threshold 1 ex-
ceeded" occurs.
Temperature
device
interior space
This monitoring function checks the temperature in the interior space of the device.
m
In case the temperature is higher than the warning threshold, the controller gives a
warning.
m
In case the temperature is too high, immediately a pulse inhibit occurs.
Temperature
heatsink
This monitoring function checks the temperature of the heatsink.
m
In case the temperature is higher than the warning threshold, the controller gives a
warning.
m
In case the temperature is too high, immediately a pulse inhibit occurs.
Connection
monitoring
This monitoring checks if the connections at the mains and at BM4F-UME-01 are in
phase. If the phases are not in phase, the controller generates the error message "con-
nection error" and an immediate pulse inhibit occurs.
Monitoring of the
main contactor
This monitoring function checks, if the main contactor is functional. If there is an error the
controller either signals the error „error main contactor“ or „error monitoring signal“, de-
pending if the main contactor has been switched on or not.
Sensing of
function modules
This monitoring function checks, if the function modules, which are necessary for the
mains inverter are plugged into the correct slots. If one or more function modules are in
the wrong slot, the controller generates the error message "function module error" and an
immediate pulse inhibit occurs.
Monitoring
current limit
This monitoring function checks the mains current. If, for the period of time "power limit
monitoring time" the following requirement is fulfilled, the error "current limit reached" is
signaled to the controller and an immediate pulse inhibit occurs.
m
The current, which is supplied from the device is the same as the limit current (current
limit), which was set.
Monitoring signal
main contactor
This monitoring function checks the main contactor. If, for the period of time „monitoring
time“ no monitoring signal is detected from the controller, the error „no monitoring signal
main contactor“ is generated by the controller and an immediate pulse inhibit occurs.
If the monitoring time is set to zero, the monitoring is disabled.
Summary of Contents for b maXX 4100 Series
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