ADJUSTABLE FEATURES
SX TRANSISTOR CONTROLS
Page 34
August 2001
FUNCTION 24
FIELD WEAKENING START (or MOTOR
KNEE POINT)
( Push CONT 9)
This function allows for setting the armature current at
which minimum field current will be achieved.
Range
0 to 350 Amps
Setting
0 to 255
Resolution
1.625 per set unit
Example:
Setting of 26 = 42 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
( Push CONT 11)
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 Max
Resolution Example
Fld Ref Change
Set
Per unit value If set at 3
30
.24
0 to 10
0.024 amps
0.072 amps
FUNCTION 27
HOUR METER MINUTES
(Push CONT 12)
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
( Push CONT 13)
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.
To determine which stored status code was the last one
recorded, read the number stored in Function 28. Using the
Memory Map for your logic card, match the "stored status
code pointer number" [the number shown in (bold italics)
in the HS (Handset) number column] on the memory map,
with the number obtained from Function 28. This will be the
last stored status code recorded.
Note: When scrolling through the stored status code
register, the register always starts at status code 1 and
scrolls to status code 16. Instructions for scrolling the
register are in section 5.3.2 of this instruction booklet.
FUNCTION 29
HOUR METER TENS AND UNITS
HOURS
SET
( Push CONT 14)
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
( Push CONT 15)
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
The following functions have function numbers larger
than the numbers on the Handset keyboard. To access
these functions, push the CONT key and the number
shown in the instructions at the same time. THE TURF
SPEED SWITCH MUST BE CLOSED.
