GE H4V262Y1 Installation And Operation Manual page 30

ADJUSTABLE FEATURES
SX TRANSISTOR CONTROLS
Section 5.0 SETUP FUNCTIONS FOR TRACTION
CONTROLLER
FUNCTION 1 MPH SCALING
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. Note: This function should
always be calculated using 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
Example to determine sitting:
RR = Rolling Radius (Inches)
Pi = 3.14159265
GR = Gear Ratio
PPR = Pulses per rotation of motor
Setting = 3600 X 2 X Pi X RR
5280 X 12 X GR X PPR X .005
Setting = 3600 X 2 X 3.14159265 X 9
5280 X 12 X 8.91 X 4 X .005
Setting = 203575
11290
Setting = 18
FUNCTION 2 CREEP SPEED
This function allows for the adjustment of the creep speed
of the vehicle when the start switch is closed.
Range 0% to 12.5% on time
Set 0 to 255
Resolution 0.049% per set unit
Example Setting of 205=(205x0.049)+2
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
= 10% on time
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.
Range 0.165 to 42.07 seconds
Set 1 to 255
Resolution 0.165 seconds per set unit
Example: Setting of 20 = 20 x 0.165=3.3 seconds
FUNCTION 4 MAX ARMATURE CURRENT LIMIT
This function allows for the adjustment of the armature
current limit of the control during motoring.
Range 0 to 260 amps at 50% on-time
Set 0 to 255
Resolution 1.02 amps per unit
Example: (Setting / 255) + 260 = I
FUNCTION 5 PLUG CURRENT LIMIT
This function allows for the adjustment of the maximum
current allowed during plug braking.
Range 32 to 338 amps
Set 24 to 255
Resolution 1.33 amps per unit
Example Setting of 40 = 40 X 1.33 =
53.2 Amps
FUNCTION 6 ODOMETER CALIBRATION
This function is used to adjust the number of tachometer
pulses (divided by 64) that are equivalent to 0.1 MPH.
Range 0 to 255
Set 0 to 255
Example:
RR = rolling radius
GR = gear ratio
PPR = pulses per rotation of motor
Setting = 6336 x GR x PPR
FUNCTION 7 MIN. FIELD CURRENT
Page 29
max
6.28 x RR x 64
August 2002