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Chapter III Process operation
3.1 Operation keyboard and display interface
The operating keyboard of the series of frequency inverters can modify the functional parameters of the
frequency inverter, monitor the working state of the frequency inverter, and control the operation of the frequency
inverter (starting and stopping). Its appearance and functional area are shown in the following figure:
3.2 Indicator light indicates run
RUN: When the light is on, it indicates that the frequency inverter is in operation, and when the light is off, it
indicates that the frequency inverter is in shutdown state
LOCAL/REMOT: Keyboard operation, terminal operation and remote operation (communication control)
indicator light
FWD/REV: Positive and negative rotation indicator light, which indicates that it is in reverse rotation when the
light is on
TUNE/TC: Tuning / torque control / fault indicator light, light on indicates torque control mode, light slow flashing
indicates tuning state, and light flash indicates fault state.
The unit indicator lamp is used to indicate the unit of the current display data (○ marks off, ●
marks on). There are the following units:
Hz frequency unit
A current unit
V voltage unit
RMP rotational speed unit
% percentage
Total of 5 - bit LED displays can display the set frequency, output frequency, various monitoring data and alarm
codes, etc.
