Danfoss VLT AutomationDrive FC 302, Руководство по эксплуатации, Страница: 80 / 122

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 AMA
was terminated by the user.
Successful AMA
1. The display shows Press [OK] to finish AMA .
2. Press [OK] to exit the AMA state.
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 assists in troubleshooting. If contacting
Danfoss for service, make sure to mention
number and alarm description.
NOTICE
Unsuccessful AMA is often caused by incorrectly
registered motor name plate data or a too big difference
between the motor power size and the frequency
converter power size.
Step 4. Set speed limit and ramp time
Parameter 3-02 Minimum Reference
Parameter 3-03 Maximum Reference
Set up the desired limits for speed and ramp time
4-11 Motor Speed Low Limit [RPM] or 4-12 Motor
Speed Low Limit [Hz]
4-13 Motor Speed High Limit [RPM]
or
4-14 Motor
Speed High Limit [Hz]
Parameter 3-41 Ramp 1 Ramp Up Time
Parameter 3-42 Ramp 1 Ramp Down Time
3.8 Additional Connections
3.8.1 Mechanical Brake Control
In hoisting/lowering applications, it is necessary to be
able to control an electro-mechanical brake:
•
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
2-20 Release Brake
Current .
•
The brake is engaged when the output frequency
is less than the frequency set in
2-21 Activate
Brake Speed [RPM] or 2-22 Activate Brake Speed
[Hz] , and only if the frequency converter carries
out a stop command.
If the frequency converter is in alarm mode or in an over-
voltage situation, the mechanical brake immediately cuts
in.
3.8.2 Parallel Connection of Motors
The frequency converter can control several parallel-
connected motors. The total current consumption of the
motors must not exceed the rated output current I
M,N
for
the frequency converter.
How to Install
VLT
®
Automation Drive FC 300 Operating Instructions
78 MG33U402 - Rev. 2013-12-16
3 3