ADJUSTABLE FEATURES
SX TRANSISTOR CONTROLS
Page 30
July 2001
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Section 5.4 Setup Functions for Traction Controller
FUNCTION 1
MPH SCALING
( Push 1 )
This function allows for the pulses from the tachometer to
be scaled to miles per hour, based on the number of pulses
received by the control in a given time. For example, if you
were scaling to 8 MPH, it would correspond to the length of
time that it took to capture 8 tachometer pulses when the
vehicle is traveling at 8 MPH.
Range
0 to 1.28 seconds
Set
0 to 255
Resolution 0.005 seconds per set unit
Example
Setting of 18 = 0.09 seconds
FUNCTION 2
CREEP SPEED
( Push 2 )
This function allows for the adjustment of the creep speed
of the vehicle when the accelerator potentiometer is at its
minimum value and the start switch is closed.
Range
2% to 15% on time
Set
0 to 255
Resolution 0.047% per set unit
Example
Setting of 205=(205x0.047)+2
= 11% 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 ACCELERATION RATE
FORWARD
(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 the forward
direction.
Range
0.1 to 25.5 seconds
Set
1 to 255
Resolution
0.086 seconds per set unit
Example:
Setting of 20 = 20 x 0.086=1.72 seconds
FUNCTION 4
MAX ARMATURE CURRENT LIMIT
(Push
4)
This function allows for the adjustment of the armature
current limit of the control during motoring.
Range
150 to 357 amps
Set
0 to 255
Resolution
0.8125 amps per unit
Example:
Setting of 255 =(255x0.8125)+150
= 357 amps
FUNCTION 5
RESPONSE TIME OF BATTERY STATE OF
CHARGE
UPDATES
(Push
5)
This function allows for the adjustment of the response
time of the battery state of charge updates. A larger setting
corresponds to a longer response time per each decrement
of the battery state of charge indication.
Range
2 to 66 seconds
Set
8 to 255
Calculation
(((Setting)/8) +1) x 2 = seconds
Example
Setting of 16 = ((16/8)+1)x2=6 seconds
