GE AF-650 GP Programming Manual page 93

H-44 Constant or Variable Torque OL
Option:
[0] * High torque
[1] Normal torque
This parameter cannot be adjusted while the motor is running.
H-45 Local Mode Configuration
3
Option:
[0] Speed open loop
[1] Speed closed loop
[2] * As mode par H-40
H-46 Back EMF at 1000 RPM
Range:
500. V* [10. - 9000 V]
H-47 Motor Angle Offset
Range:
0* [-32768 - 32767]
3.7.4 H-5# Load Indep. Settings
Parameters to configure the load-independent motor settings.
H-50 Motor Magnetisation at Zero Speed
Range:
100 %* [0 - 300 %]
92
Function:
Allows up to 160% over torque.
For oversized motor - allows up to 110% over torque.
Function:
Select which application configuration mode (par. H-40 Configuration Mode), i.e. application control prin-
ciple, to use when a Local (Keypad) Reference is active. A Local Reference can be active only when par.
F-02 Operation Method is set to [0] or [2]. By default the local reference is active in Hand Mode only.
Function:
Set the nominal back EMF for the motor when running at 1000 RPM. This parameter is only active when
par. P-20 Motor Construction is set to PM motor [1] (Permanent Magnet Motor).
NB!
When using PM motors, it is recommended to use brake resistors.
Function:
Enter the correct offset angle between the PM motor and the index position (single-turn) of the attached
encoder or resolver. The value range of 0 - 32768 corresponds to 0 - 2 * pi (radians). To obtain the offset
angle value: After frequency converter start-up apply DC-hold and enter the value of par. DR-20 Motor
Angle into this parameter.
This parameter is only active when par. P-20 Motor Construction is set to PM, non-salient SPM [1] (Per-
manent Magnet Motor).
Function:
Use this par. along with par. H-51 Min Speed Normal Magnetising [RPM] to obtain a different thermal
load on the motor when running at low speed.
Enter a value which is a percentage of the rated magnetizing current. If the setting is too low, the torque
on the motor shaft may be reduced.
AF-650 GP Programming Guide