ADJUSTABLE FEATURES
SX TRANSISTOR CONTROLS | Page 58 |
FUNCTION 6 | FW RATIO |
| (Push 6) |
This function sets the ratio between armature and field current when operating below the Field Weakening Start point. The setting represents the quantity of field current changed for each 1 amp of armature current changed.
Max Fld Ref | Set | Resolution Per Unit Value |
40 | 0 to 10 | 0.029 amps |
The ratio value (VAL) is the set value divided by 10 and rounded to the whole number.
Example: Setting of 45 = 45/10 = 4.5 = 4 VAL
IFIELD = VAL (IMOTOR x 0.029)
FUNCTION 7 MIN FIELD CURRENT ( Push 7 )
This function allows the adjustment of the field weakening level in order to set the top speed of the motor.
Min | Max | Set | Resolution Per Unit Value |
0 | 40 | 51 to 255 | 0.185 |
MIN IF = (VAL-51) X 0.185
Important Note: This function is used to optimize motor and control performance, and this setting will be determined by GE and OEM engineers at the time of vehicle development. This setting must not be changed by field personnel without the permission of the OEM.
FUNCTION 8 MAX FIELD CURRENT ( Push 8 )
This function allows for the adjustment of the maximum field current in order to obtain the maximum torque of the motor.
Min | Max | Set | Resolution Per Unit Value |
0 | 40 | 51 to 255 | 0.185 |
MAX IF = (VAL-51) X 0.185
Important Note: This function is used to optimize motor and control performance, and this setting will be determined by GE and OEM engineers at the time of vehicle development. This setting must not be changed by field personnel without the permission of the OEM.
FUNCTION 9 REGEN BRAKING C/L (Push 9)
This function allows for the adjustment of the Regen braking current limit. High current correlates to shorter stopping distance.
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| Resolution | Example |
Min | Max | Set | Per unit value | If set at 20 |
52A | 468A | 0 to 255 | 1.63 amps | 84.6 amps |
REGEN BRAKE IA = (VAL X 1.63) + 52
FUNCTION 10 FIELD CURRENT FOR REGEN
( Push 10 )
This function allows for the adjustment of the field current to be used during the regen braking mode.
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| Resolution | Example |
Min | Max | Set | Per unit value | If set at 71 |
0 | 40 | 51 to 255 | 0.185 amps | 3.7 amps |
IF = (VAL-51) X 0.185
Important Note: This function is used to optimize motor and control performance and this setting will be determined by GE and OEM engineers at the time of vehicle development. This setting must not be changed by field personnel without the permission of the OEM.
FUNCTION 11 TURN SPEED LIMIT (Push 11)
This function allows for the adjustment of the speed limit (maximum battery volts to the motor) when the SL1 signal is calculated from the turn angle potentiometer by the control card.
Range | 100% to 0% battery volts |
Set | 51 to 180 |
Resolution | 0.78% per set unit |
Example | Setting of 71 = 84.4% of battery volts |
Note: To disable speed limit, and assure no 1A hold off, set this function to a value of zero.
FUNCTION 12 MAX ARMATURE PERCENT ON ( Push 12 )
Same as function 11, this function allows for the adjustment of the motor speed limit (maximum battery volts to the motor). The dash display mode selection enables the speed limit as well as setting the level of speed limit.
January 2000
