09 OPERATION
3BHS213401 E01 REV H ACS1000 AIR-COOLED USER MANUAL 117/184
9.6 Status messages
This section lists the messages of the main operating states the drive passes through, when it
is put into operation, when it is stopped, or when a fault condition has occurred. The messages
are sent to the higher-level control system and are displayed on the CDP control panel of
the drive.
For information on other status messages, such as fault status messages in
particular, see the status words in the “Appendix G – Signal and parameter table” of
the drive.
RdyForMCBOn
The status message signals that the drive is healthy and ready for the ON
command. The ON command initiates the charging of the DC-link capacitors and
the closing of the main circuit breaker of the drive. Depending on the control
place, the command can either be sent from the higher-level control system to the
drive or be initiated by pressing the Main circuit online pushbutton on the control
compartment door.
Charging
The status message RdyForMCBOn changes to Charging when the DC-link
capacitors of the drive are being charged.
Rdy to Strt
The status message Rdy to Strt tells the operator that the drive is energized and
ready for operation. As soon as the start command is initiated, the motor is
magnetized and the drive starts to modulate.
Magnetizing
The status message Rdy to Strt changes to Magnetizing when the firing pulses of
the inverter are released.
Running
When the drive is in Running state, it is running and operating according to the set
speed or torque reference value. When in remote control mode, the reference
value is set by the higher-level control system. When in local control mode, the
value is entered into the CDP control panel.
Stopping
Stopping indicates that the drive has received a stop command and that a ramp
or coast stop has been initiated. The stopping mode depends on the parameter
setting. The status message changes to Rdy to Strt when the zero speed
threshold is reached.
When a start command is given while the drive is stopping, the drive resumes
operation and the status message changes to Running again.
Discharging
The status message Rdy to Strt changes to Discharging when the MCB has
opened and the DC-link capacitors are discharging.
Tripped
The status message indicates that a fault condition has occurred that requires a
shutdown of the drive. The status message always alternates with the specific
fault message. The type of shutdown depends on the fault class the fault
condition is assigned to in the drive software.
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