Checking Motor Rotation; Local-Control Test; System Start-Up; Maintenance - Danfoss VLT FC 102 Operating Instructions Manual

Commissioning

5.5 Checking Motor Rotation

WARNING
MOTOR START!
Ensure that the motor, system, and any attached
equipment are ready for start. It is the responsibility of
the user to ensure safe operation under any condition.
Failure to ensure that the motor, system, and any
attached equipment is ready for start could result in
personal injury or equipment damage.
NOTICE
Risk of damage to pumps/compressors caused by motor
running in wrong direction. Before running the
frequency converter, check the motor rotation.
The motor will run briefly at 5 Hz or the minimum
frequency set in 4-12 Motor Speed Low Limit [Hz].
1. Press [Main Menu].
2. Scroll to 1-28 Motor Rotation Check and press
[OK].
3. Scroll to [1] Enable.
The following text will appear: Note! Motor may run in
wrong direction.
4. Press [OK].
5. Follow the on-screen instructions.
NOTICE
To change the direction of rotation, remove power to
the frequency converter and wait for power to discharge.
Reverse the connection of any 2 of the 3 motor wires on
the motor or frequency converter side of the connection.

5.6 Local-control Test

WARNING
MOTOR START!
Ensure that the motor, system,e and any attached
equipment are ready for start. It is the responsibility of
the user to ensure safe operation under any condition.
Failure to ensure that the motor, system, and any
attached equipment is ready for start could result in
personal injury or equipment damage.
1. Press [Hand On] to provide a local start command
to the frequency converter.
2. Accelerate the frequency converter by pressing
▲
[ ] to full speed. Moving the cursor left of the
decimal point provides quicker input changes.
3. Note any acceleration problems.
®
VLT HVAC Drive Operating Instructions
4.
In the event of acceleration or deceleration problems, see
7.4 Troubleshooting. See 7.3 List of Warnings and Alarms for
resetting the frequency converter after a trip.

5.7 System Start-up

The procedure in this section requires user-wiring and
application programming to be completed. The following
procedure is recommended after application set-up is
completed.
WARNING
MOTOR START!
Ensure that the motor, system, and any attached
equipment are ready for start. It is the responsibility of
the user to ensure safe operation under any condition.
Failure to ensure that the motor, system, and any
attached equipment is ready for start could result in
personal injury or equipment damage.
1.
2.
3.
4.
5.
If warnings or alarms occur, see 7.3 List of Warnings and
Alarms.

5.8 Maintenance

Under normal operating conditions and load profiles, the
frequency converter is maintenance-free throughout its
designed lifetime. To prevent breakdown, danger, and
damage, examine the frequency converter at regular
intervals depending on the operating conditions. Replace
worn or damaged parts with original spare parts or
standard parts. For service and support, refer to
www.danfoss.com/contact/sales_and_services/.
CAUTION
Risk of personal injury or equipment damage exists.
Repair and service must be carried out by Danfoss
authorized personnel only.
MG11AJ02 - Rev. 2013-07-31
Press [Off]. Note any deceleration problems.
Press [Auto On].
Apply an external run command.
Adjust the speed reference throughout the speed
range.
Remove the external run command.
Check sound and vibration level of the motor to
ensure that the system is working as intended.
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