Additional Connections; Mechanical Brake Control - Danfoss vlt series Operating Instructions Manual

How to Install
Step 2. Enter the motor nameplate data in this
parameter list.
To access this list, press [Quick Menu] then select Q2 Quick
Setup.
1. Parameter 1-20 Motor Power [kW]
3 3
Parameter 1-21 Motor Power [HP]
2. Parameter 1-22 Motor Voltage
3. Parameter 1-23 Motor Frequency
4. Parameter 1-24 Motor Current
5. Parameter 1-25 Motor Nominal Speed
Step 3. Activate the Automatic Motor Adaptation (AMA).
Performing an AMA ensures optimum performance. The
AMA measures the values from the motor model
equivalent diagram.
1. Connect terminal 37 to terminal 12 (if terminal 37
is available).
2. Connect terminal 27 to terminal 12 or set
parameter 5-12 Terminal 27 Digital Input to [0] No
function.
3. Activate the AMA parameter 1-29 Automatic Motor
Adaptation (AMA).
4. Select between complete or reduced AMA. If a
sine-wave filter is mounted, run only the reduced
AMA, or remove the sine-wave filter during the
AMA procedure.
5. Press [OK]. The display shows Press [Hand On] to
start.
6. Press [Hand On]. A progress bar indicates if the
AMA is in progress.
Stop the AMA during operation
1. Press [Off]. The frequency converter enters into
alarm mode, and the display shows that the user
terminated the AMA.
Successful AMA
1. The display shows Press [OK] to finish AMA.
2. To exit the AMA state, press [OK].
Unsuccessful AMA
1. The frequency converter enters into alarm mode.
A description of the alarm can be found in
chapter 6 Warnings and Alarms.
2. Report Value in the [Alarm Log] shows the last
measuring sequence carried out by the AMA,
before the frequency converter entered alarm
mode. This number along with the description of
the alarm helps with troubleshooting. State the
alarm number and description when contacting
Danfoss service.
58
®
VLT AutomationDrive FC 302
NOTICE
Incorrectly registered motor nameplate data, or a too
significant difference between the motor power size and
the frequency converter power size often causes
unsuccessful AMA.
Step 4. Set the speed limit and ramp time.
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•
Step 5. Set up the desired limits for speed and ramp
time.
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•
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3.7 Additional Connections

3.7.1 Mechanical Brake Control

In hoisting/lowering applications, it is necessary to be able
to control an electro-mechanical brake:
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•
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If the frequency converter is in alarm mode or in an
overvoltage situation, the mechanical brake immediately
cuts in.
Danfoss A/S © 04/2016 All rights reserved.
Parameter 3-02 Minimum Reference
Parameter 3-03 Maximum Reference
Parameter 4-11 Motor Speed Low Limit [RPM] or
parameter 4-12 Motor Speed Low Limit [Hz]
Parameter 4-13 Motor Speed High Limit [RPM] or
parameter 4-14 Motor Speed High Limit [Hz]
Parameter 3-41 Ramp 1 Ramp Up Time
Parameter 3-42 Ramp 1 Ramp Down Time
Control the brake using any relay output or
digital output (terminal 27 or 29).
Keep the output closed (voltage-free) as long as
the frequency converter is unable to support the
motor, for example due to the load being too
heavy.
Select [32] Mechanical brake control in parameter
group 5-4* Relays for applications with an electro-
mechanical brake.
The brake is released when the motor current
exceeds the preset value in
parameter 2-20 Release Brake Current.
The brake is engaged when the output frequency
is less than the frequency set in
parameter 2-21 Activate Brake Speed [RPM] or
parameter 2-22 Activate Brake Speed [Hz], and only
if the frequency converter carries out a stop
command.
MG34Q402