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VLT
®
HVAC Drive Programming Guide
1-28 Motor Rotation Check
Option:
[0] *
OFF
[1]
Enabled
Pressing [OK], [Back] or [Cancel] will dismiss the message and display a new message: "Press [Hand on] to start the motor. Press [Cancel] to abort".
Pressing [Hand on] starts the motor at 5 Hz in forward direction and the display shows: "Motor is running. Check if motor rotation direction is correct.
Press [Off] to stop the motor". Pressing [Off] stops the motor and resets par.1-28
motor phase cables should be interchanged. IMPORTANT:
Line power must be removed before disconnecting motor phase cables.
1-29 Automatic Motor Adaptation (AMA)
Option:
[0] *
Off
[1]
Enable complete AMA
[2]
Enable reduced AMA
Activate the AMA function by pressing [Hand on] after selecting [1] or [2]. See also the section
the display will read: "Press [OK] to finish AMA". After pressing the [OK] key, the adjustable frequency drive is ready for operation.
Note:
•
For the best adaptation of the adjustable frequency drive, run AMA on a cold motor
•
AMA cannot be performed while the motor is running.
NOTE!
It is important to set motor par. 1-2* Motor Data correctly, since these form part of the AMA algorithm. An AMA must be performed
to achieve optimum dynamic motor performance. It may take up to 10 min., depending on the motor power rating.
NOTE!
Avoid generating external torque during AMA
Function:
Following installation and connection of the motor, this function allows the correct motor rotation
direction to be verified. Enabling this function overrides any bus commands or digital inputs, except
External Interlock and Safe Stop (if included).
Motor Rotation Check is not active.
Motor Rotation Check is enabled. Once enabled, display shows:
"Please Note! Motor may run in wrong direction".
Motor Rotation Check
Function:
The AMA function optimizes dynamic motor performance by automatically optimizing the advanced
motor parameters par.1-30
Stator Resistance (Rs)
is stationary.
No function
performs AMA of the stator resistance R
the rotor leakage reactance X
and the main reactance X
2
performs a reduced AMA of the stator resistance R
filter is used between the adjustable frequency drive and the motor.
MG.11.C6.22 - VLT
®
is a registered Danfoss trademark
3 Parameter Description
. If motor rotation direction is incorrect, two
to par.1-35
Main Reactance (Xh)
, the rotor resistance R
, the stator leakage reactance X
S
r
.
h
in the system only. Select this option if an LC
s
Automatic Motor Adaptation
. After a normal sequence,
3
) while the motor
,
1
3-21
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