GE IC3645SR4T405CT1 Installation And Operation Manual page 43

ADJUSTABLE FEATURES
IT TRANSISTOR CONTROLS
Setting of 1 = Most aggressive braking
Setting of 255 = Least aggressive braking
FUNCTION 22 OVERSPEED DECREASE RATE FOR
FIELD/ARMATURE CURRENT
(Push CONT 7)
Mode 1 = FN 75
Mode 2 = FN 87
This function adjusts the rate at which the armature and
field currents decrease when the accelerator pedal is
released with the start switch closed, or when the vehicle
speed is less than the speed limit.
Setting
Setting of 1 = Most aggressive braking
Setting of 255 = Least aggressive braking
FUNCTION 23 REGEN SPEED WITH START SWITCH
OPEN
(Push CONT 8)
Function 23 = 0 = 2.17 mph
15 = 1.4 mph
30 = 2.8 mph
40 = 12.6 mph
100 = mph set by Function 13
FUNCTION 24 FIELD WEAKENING START
(Push CONT 9)
This function allows for setting the armature current at
which minimum field current will be achieved.
Range
Setting
Resolution
I FWS = VAL. x 1.625
MOTOR
Example: Setting of 20 = 32.5 amps
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 following instructions at
the same time. THE SEAT SWITCH MUST BE
CLOSED.
FUNCTION 25 MONITOR
(Push CONT 10)
Mode 3 = FN 99
Mode 4 = FN 111
1 to 255
0 to 414 Amps
0 to 255
1.625 per set unit
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.
This function should only be adjusted by the vehicle
OEM. To ensure optimum operation of the control,
this function must be left with zero stored in this
register.
FUNCTION 26 BASE RATIO
(Push CONT 11)
This function sets the ratio between armature and field
current when operating below the maximum field current
and above 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
40 0 to 255
Range
Setting
Resolution
Example: Setting of 10 = 0.3125 VAL
I = VAL ( I
FIELD MOTOR
FUNCTION 27 ELECTRIC BRAKE APPLY SPEED
( Push CONT 12)
Mode 1 = FN 50
Mode 2 = FN 54
This function sets the speed (in MPH) at which the electric
brake will be applied when the accelerator pedal is fully
released (Start switch is open).
Range
Setting
Resolution
Example: Setting of 10 = 1 MPH
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.
Page
Resolution Per Unit Value
0.03125 amps
0 to 8 amps
0 to 255
0.3125 amps per unit
x 0.03125 )
Mode 3 = FN 58
Mode 4 = FN 62
0 to 25.5 MPH
0 to 255
0.1 MPH per unit
January 2008
43