Table 30: Recommendations in different applications
Application
Settings
Low inertia applications
I
Load
/I
Motor
<5
•
1–17 Voltage filter time const.
to be increased by
factor 5 to 10
•
1–14 Damping Gain
should be reduced
•
1–66 Min. Current at Low Speed
should be reduced
(<100%)
Low inertia applications
5–>I
Load
/I
Motor
> 5
Keep calculated values
High inertia applications
I
Load
/I
Motor
> 50
1–14 Damping Gain
,
1–15 Low Speed Filter time Const.
and
1–16 High Speed Filter Time Const.
should be
increased
High load at low speed
<30% (rated speed)
1–17 Voltage filter time const.
should be increased
1–66 Min. Current at Low Speed
should be increased
(>100% for longer time can overheat the motor)
If the motor starts oscillating at a certain speed, increase
1–14 Damping Gain
. Increase the
value in small steps.
Depending on the motor, a good value for this parameter can be 10% or 100% higher
than the default value.
Starting torque can be adjusted in
1–66 Min. Current at Low Speed
. 100% provides
nominal torque as starting torque.
6.9 Check motor rotation
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 [Quick Menu].
2. Scroll to
Q2 Quick Setup
.
3. Press [OK].
4. Scroll to
1–28 Motor Rotation Check
.
5. Press [OK].
6. Scroll to
[1] Enable
.
The following text will appear:
NOTE! Motor may run in wrong direction
.
7. Press [OK].
8. Follow the on-screen instructions.
To change the direction of rotation, remove power to the frequency converter and wait for
power to discharge. Reverse the connection of any two of the three motor cables on the
motor or frequency converter side of the connection.
6.10 Local-control test
CAUTION:
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.
NOTE: The [Hand On] key provides a local start command to the frequency converter. The
[Off] key provides the stop function.
When operating in local mode, [
▲
] and [
▼
] increase and decrease the speed output of
the frequency converter. [
◄
] and [
►
] move the display cursor in the numeric display.
6 Operation
Aquavar
®
Intelligent Pump Controller - 150 HP to 600 HP INSTRUCTION MANUAL
127
Summary of Contents for Aquavar
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