KEB COMBIVERT M4, Instruction Manual, Page: 74 / 80

GB - 36
Glossary
7. Glossary
Electromagnetic compatibility, the guidelines for the reduction of
interferences caused by the units as well as the operational reliability of
faulted units.
For motors that work with no-load the voltage can be reduced, when this
condition is attained it results in energy savings.
Relay or transistor output that switches in dependence on a preset
frequency.
At regulated systems, the feedback value supplied by the external detection.
At controlled systems, the value computed on the basis of preset conditions.
Acceleration stop, prevents overcurrent errors during acceleration by
stopping the ramp. The current level is specified by the max. ramp current
(CP.14).
RS232, standardized serial interface for max. 1 end unit with a cable length
of max. 15 m. RS485, standardized serial interface for max. 240 end units
and a cable length of 1000 m.
The preset analog or digital value with which the frequency inverter shall
operate.
Speed search prevents an overcurrent error at the connection to running
motors. The motor speed is being determined and the inverter adapts first
its rotating field frequency and accelerates afterwards.
The Stall-function protects the inverter against switch off due to overcurrent
at a constant output frequency. When exceeding the level adjusted with
CP.15 the output frequency is being reduced until the value is again below
the level.
EMC
Energy-Saving Function
Frequency-dependent
Switch
Actual Value
LA-Stop
RS232/485
Set-point Value
Speed Search
Stall