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VLT Ea4 Parallel Drive Modules
Operating Guide
Operation
Description
status
AMA ready
AMA is ready to start. To start, press [Hand On].
AMA run-
AMA process is in progress.
ning
Braking
The brake chopper is in operation. The brake resistor absorbs the generative energy.
Coast
•
[2] 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.
•
No output from the drive to the motor.
Ctrl. ramp-
[1] Ctrl. ramp-down was selected in parameter 14-10 Mains Failure.
down
•
The mains voltage is below the value set in parameter 14-11 Mains Voltage at Mains Fault.
•
The drive ramps down the motor in a controlled manner.
Current
The drive output current is above the limit set in parameter 4-51 Warning Current High.
high
Current low
The drive output current is below the limit set in parameter 4-52 Warning Speed Low.
DC hold
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 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 Brak-
ing Time).
•
DC brake is activated in parameter 2-03 DC Brake Cut In Speed [RPM] and a stop command is active.
•
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
The sum of all active feedback is above the feedback limit set in parameter 4-57 Warning Feedback High.
high
Feedback
The sum of all active feedback is below the feedback limit set in parameter 4-56 Warning Feedback Low.
low
Freeze out-
The remote reference is active, which holds the present speed.
put
•
[20] Freeze Output was selected as a function for a digital input (parameter group 5–1* Digital Inputs). The corre-
sponding terminal is active. Speed control is only possible via the terminal functions speed up and speed
down.
•
Hold ramp is activated via serial communication.
Freeze out-
A freeze output command has been given, but the motor remains stopped until a run permissive signal is re-
put request
ceived.
Freeze ref.
[19] Freeze Reference was selected as a function for a digital input (parameter group 5–1* Digital Inputs). The corre-
sponding terminal is active. The drive saves the actual reference. Changing the reference is now only possible via
terminal functions speed up and speed down.
Jog request
A jog command has been given, but the motor is stopped until a run permissive signal is received via a digital
input.
Jogging
The motor is running as programmed in parameter 3-19 Jog Speed [RPM].
44 | Danfoss A/S © 2023.01
Operating the Drive
AQ434333248451en-000101 / 130R1286
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