Danfoss VLT HVAC Drive Instruction Manual page 5

GROUP 3 – Third (right) word: Operation Status
Operation status
AC brake was selected in parameter 2‐10 Brake Function. The AC brake over‐magnetizes the
AC brake
motor to achieve a controlled slow down.
AMA finish OK
Automatic motor adaptation (AMA) was carried out successfully.
AMA ready
AMA is ready to start. To start, press Hand On.
AMA running
AMA process is in progress.
Braking
The brake chopper is in operation. The brake resistor absorbs the generative energy.
The brake chopper is in operation. The power limit for the brake resistor defined in
Braking max.
parameter 2‐12 Brake Power Limit (kW) has been reached.
PROFIDrive profile was selected in par. 8‐10 Control Word Profile. Via serial communication
Bus Jog 1
the Jog 1 function is activated. The Motor is running with par. 8‐90 Bus Jog 1 Speed.
PROFIDrive profile was selected in par. 8‐10 Control Word Profile. Via serial communication
Bus Jog 2
the Jog 2 function is activated. The Motor is running with par. 8‐91 Bus Jog 2 Speed.
The output frequency is corrected by the value set in par. 3‐12 Catch up/slow Down Value.
1. Catch up is selected as a function for a digital input (parameter group 5‐1* Digital Inputs).
Catch up
The corresponding terminal is active.
2. Catch up was activated via serial communication.
• 2 Coast inverse was selected as a function for a digital input (parameter group 5–1* Digital
Coast
Inputs). The corresponding terminal is not connected.
• Coast activated by serial communication.
PROFIDrive profile was selected in par. 8‐10 Control Word Profile. The FC needs the second
Control ready
part of the two‐part serial start command (e.g. 0x047F) via serial communication to allow
starting. Using an input terminal is not possible.
1 Ctrl. ramp‐down was selected in parameter 14‐10 Mains Failure.
Ctrl. ramp‐
• Mains voltage is below the value set in parameter 14‐11 Mains Voltage at Mains Fault.
down
• The drive ramps down the motor in a controlled manner.
Current high
The drive output current is above the limit set in parameter 4‐51 Warning Current High.
Current low
The drive output current is below the limit set in parameter 4‐52 Warning Speed Low.
DC hold is selected in parameter 1‐80 Function at Stop and a stop command is active. The
DC hold
motor is held by a DC current set in parameter 2‐00 DC Hold Current.
The motor is held with a DC current (parameter 2‐01 DC Brake Current) for a specified time
(parameter 2‐02 DC Braking Time).
• DC brake is activated in parameter 2‐03 DC Brake Cut In Speed RPM and a stop command is
DC stop
active.
• DC brake (inverse) is selected as a function for a digital input (parameter group 5–1* Digital
Inputs). The corresponding terminal is not active.
• The DC brake is activated via serial communication.
In par. 1‐01 Motor Control Principle U/f and in par. 1‐80 Function at Stop DC‐Voltage U0 is
DC Voltage U0
selected. A Stop command (e.g. Stop (inverse)) is activated. The Voltage selected according to
the par. 1‐55 U/f Characteristic ‐ U 0 (U/f‐Characteristic – UV) is applied to the Motor.
The sum of all active feedbacks is above the feedback limit set in parameter 4‐57 Warning
Feedback high
Feedback High.
The sum of all active feedbacks is below the feedback limit set in parameter 4‐56 Warning
Feedback low
Feedback Low.
In par. 1‐73 Flying Start the Flying start function is activated. The FC is searching for the
unknown shaft speed of the connected motor, within the adjusted speed range. The process
Flying start
was started by a start command, re‐connecting a digital input (parameter group 5–1* Digital
Inputs) programmed as Coast inverse or by connecting the Mains.
Description
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