ADJUSTABLE FEATURES
SX TRANSISTOR CONTROLS
Page
32
FUNCTION 21
TOP SPEED REGULATION POINT
This function adjusts the top speed regulation point of the
vehicle.
Range
20 to 25.5 MPH
Setting
200 to 255
Resolution
0.1 MPH per set unit
Example:
Setting of 200 = 20.0 MPH
Setting of 249 = 24.9 MPH
FUNCTION 22
NOT USED
Value should be set at zero.
FUNCTION 23
ERROR COMPENSATION
(Push CONT 8)
This function is used to reduce the ripple in field current
due to the interaction between motor field design and the
digital field current regulation circuit. The value for this
function should be set to 0.
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 24 FIELD WEAKENING START (or
MOTOR KNEE POINT)
This function allows for setting the armature current at
which minimum field current will be achieved.
Range
0 to 255 Amps
Setting
0 to 255
Resolution
1.0 per set unit
Example:
Setting of 26 = 26 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.
FUNCTION 25
MONITOR
( Push CONT 10)
This function allows the monitoring of certain control
functions by looking directly at the RAM of the
microprocessor. Because absolute memory locations need
to be known, this function should not be used without
detailed instructions from the GE application engineer.
To ensure optimum operation of the control, this
function must be left with zero stored in this
register.
FUNCTION 26 RATIO OF FIELD TO ARMATURE
AMPS
This function sets the ratio between armature and field
current when transitioning from minimum field to maximum
field current. The setting represents the quantity of field
current changed for each 1 amp of armature current
changed.
Max
Resolution
Example
Change
Set
Per unit value
If set at 100
.18
0-255
0.00072
0.072
FUNCTION 27
HOUR METER MINUTES
This function adjusts the number of 30 second intervals
registering in the hour meter. This function is typically not
set by an OEM, it is usually only read from the register.
Range
0 to 60 minutes
Resolution
0.5 minutes per set unit
Setting
0 to 120
Example
Setting of 60 = 60 x 0.5 = 30 minutes
FUNCTION 28
STORED STATUS CODE COUNT
POINTER
This register contains the location of the last stored status
code recorded of the 16 stored status codes. These stored
status codes have caused a PMT controller shutdown
and/or disruption of normal vehicle operation.
FUNCTION 29
HOUR METER TENS AND UNITS
HOURS SET
This function allows for the adjustment of the tens and
units hours of the hour meter.
Range
0 to 99
Set
0 to 99
Example
9999 Hours
FUNCTION 30
HOUR METER THOUSANDS
AND HUNDREDS HOURS SET
This function allows for the adjustment of the thousands
and hundreds hours of the hour meter.
Range
0 to 99
Set
0 to 99
Example
9999 Hours
FUNCTION 48
NOT USED
FUNCTION 49
NOT USED
FUNCTION 50
NOT USED
FUNCTION 51
NOT USED
Updated Sept 2019
