ADJUSTABLE FEATURES
SX TRANSISTOR CONTROLS
Page 32
April 1999
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Section 5.4 Setup Functions for Traction Controller
FUNCTION 1
TACHOMETER SAMPLE RATE
This function allows for the adjustment of the rate at which
the tachometer output is sampled by the control.
Range
0 to 1.275 seconds
Set
0 to 255
Resolution
.005 seconds per set unit
Example
Setting of 20 = 0.1 second
FUNCTION 2
CREEP SPEED
( Push 2 )
This function allows for the adjustment of the creep speed
of the vehicle. Creep speed can be adjusted when an
accelerator input voltage between 3.9 and 3.3 volts or an
accelerator ohm input between 6.0 K and 4.0K ohms is
provided.
Range
2% to 15% on time
Set
0 to 255
Resolution
0.05% per set unit
Example:
Setting of 20 = 3% on time
Important Note: The 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 3
ARMATURE CONTROLLED
ACCELERATION IN HIGH SPEED MODE
(Push
3)
This function allows for the adjustment of the rate of time it
takes for the control to accelerate to 100% applied battery
voltage to the motor on hard acceleration in high speed
mode.
Range
0.1 to 25.5 seconds
Set
1 to 255
Resolution
0.1 seconds per set unit
Example:
Setting of 20 = 2.0 seconds
C/A = 2.2 seconds
FUNCTION 4
ARMATURE CURRENT LIMIT
(Push
4)
This function allows for the adjustment of the armature
current limit of the control. The rating of the control will
determine the range of adjustment for this function. Please
refer to the operating instructions and current limit curves
for the control used in specific vehicle.
Range
See control C/L curves
Set
0 to 255
Example:
0 = min. current,
255 = max. current
FUNCTION 5
PLUGGING CURRENT LIMIT
(Push
5)
This function allows for the adjustment of the plugging
distance of the vehicle. The larger the current setting, the
shorter the stopping distance.
Min
Max
Set
Resolution
Per unit value
Example
If set at 20
26
226
0 to 255
0.78 amps
41.6 amps
55
455
0 to 255
1.57 amps
86.4 amps
55
655
0 to 255
2.35 amps
102 amps
Important Note: The 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.
