Additional Connections; Mechanical Brake Control; Parallel Connection Of Motors - Danfoss VLT AQUA Drive FC 202 Operating Instructions Manual

How to Install
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. 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 .
2. Report Value in the [Alarm Log] shows that 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. If
contacting Danfoss for service, state the alarm
number and description.
NOTICE
Incorrectly registered motor nameplate data or a too big
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
•
3-02 Minimum Reference
•
3-03 Maximum Reference
Step 5. 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]
•
3-41 Ramp 1 Ramp Up Time
•
3-42 Ramp 1 Ramp Down Time

4.5 Additional Connections

4.5.1 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.
MG20Y202
Operating Instructions
•
•
•
If the frequency converter is in alarm mode or in an over-
voltage situation, the mechanical brake immediately cuts
in.

4.5.2 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
the frequency converter.
Danfoss A/S © Rev. 06/2014 All rights reserved.
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.
4 4
for
M,N
49