Danfoss vlt FC 102 - Page 64

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Table 40: Reference Site
Remote
The speed reference is given from external signals, serial communication, or internal preset references.
Local
The drive uses [Hand On] control or reference values from the LCP.
Table 41: Operation Status
AC Brake
[2] AC brake is selected in parameter 2-10 Brake Function. The AC brake overmagnetizes the motor to achieve a
controlled slow down.
AMA finish
OK
AMA was carried out successfully.
AMA ready
AMA is ready to start. Press [Hand On] to start.
AMA run-
ning
AMA process is in progress.
Braking
The brake chopper is in operation. Generative energy is absorbed by the brake resistor.
Braking
max.
The brake chopper is in operation. The power limit for the brake resistor defined in parameter 2-12 Brake Power
Limit (kW) has been reached.
Coast
Coast inverse was selected as a function for a digital input (parameter group 5-1* Digital Inputs). The corre-
sponding terminal is not connected.
Coast activated by serial communication.
Ctrl. ramp-
down
[1] Control Ramp-down was selected in parameter 14-10 Mains Failure.
The mains voltage is below the value set in parameter 14-11 Mains Voltage at Mains Fault.
The drive ramps down the motor using a controlled ramp down.
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
[1] DC hold is selected in parameter 1-80 Function at Stop and a stop command is active. The motor is held by a DC
current set in parameter 2-00 DC Hold/Preheat Current.
DC Stop
The motor is held with a DC current (parameter 2-01 DC Brake Current) for a specified time (parameter 2-02 DC
Braking Time).
The DC brake cut in speed is reached in parameter 2-03 DC Brake Cut In Speed [RPM] and a stop command is
active.
[5] DC-brake inverse is selected as a function for a digital input (parameter group 5-1* Digital Inputs). The corre-
sponding terminal is not active.
The DC brake is activated via serial communication.
Feedback
high
The sum of all active feedbacks is above the feedback limit set in parameter 4-57 Warning Feedback High.
Feedback
low
The sum of all active feedbacks is below the feedback limit set in parameter 4-56 Warning Feedback Low.
Freeze out-
put
The remote reference is active, which holds the present speed.
AQ267037536117en-000101 / 130R008364 | Danfoss A/S © 2023.09
Diagnostics and Troubleshooting
VLT HVAC Drive FC 102
Operating Guide