ADJUSTABLE FEATURES
SX TRANSISTOR CONTROLS
Page 33
August 2001
FUNCTION 17
CARD TYPE SELECTION
( Push CONT 2 )
This function allows for the selection of the card type for
this vehicle’s application. This function should be set
between:
50 – 54 when speed is measured in MPH
55 – 60 when speed is measured in KPH
FUNCTION 18
LINE CONTACTOR DROP OUT TIME
DELAY
( Push CONT 3 )
This function allows for the adjustment of the time
allowable for the start switch to be opened before the line
contactor opens.
Range
0 to 25.5 seconds
Setting
0 to 255
Resolution
0.1 seconds per set unit
Example:
Setting of 255 = 25.5 seconds
FUNCTION 19
FIELD CURRENT RAMP RATE DURING
REGEN/PLUGGING
( Push CONT 4 )
This function adjusts the rate at which field current ramps
to full value during regenerative or plug braking when a
direction change is made.
Range
0 to 0.255 seconds
Setting
0 to 255
Resolution
0.001 seconds per set unit
Example:
Setting of 12 = 0.012 seconds
FUNCTION 20
MPH/KPH OVER SPEED LIMIT
( Push CONT 5)
This function adjusts the value of the over speed limit of the
control.
Resolution
1 MPH/1KPM per set unit
Example:
Setting of 28 = 28 MPH/KPH
Important: Insure that this setting is based on the Function
17 setting, e.g MPH or KPH.
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 21
ARMATURE CURRENT RAMP DURING
REGEN
(Push CONT 6)
This function adjusts the rate at which armature current
ramps .8 amps steps to full value during regenerative
braking when a direction change is made.
Range
.001 to 0.255 seconds
Setting
0 to 255
Resolution
0.8 seconds per set unit
Example:
Setting of 12 = 0.012 seconds
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 22
ODOMETER CALIBRATION
(Push CONT 7)
This function is used to adjust the number of tachometer
pulses divided by 16 that will equal .1 MPH or .1 KPM.
Range
0 to 255 pulses
Setting
0 to 255
Example to calculate setting:
RR = Rolling Radius (Inches)
GR = Gear Ratio
PPR = Pulses per rotation of motor
MPH Setting =
6336 XGR X PPR
6.28 X RR X 16
MPH Setting =
6336 X8.91 X 4
6.28 X 9 X 16
MPH Setting =
250
KPM Setting =
MPH Setting/1.6
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 32.
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.