BASIC OPERATION AND FEATURES
SX TRANSISTOR CONTROL
Page 7
July 2001
communications port and dumping the information to a
Personal Computer terminal.
Section 2.3.2 Hourmeter Readings
This feature will display the recorded hours of use of the
traction control to the Dash Display (if used) each time the
key switch is turned off.
Section 2.3.3 Dash Display Routine and Battery Discharge
Indication (BDI)
The latest in microprocessor technology is used to provide
accurate battery state of charge information and to supply
passive and active warning signals to the vehicle operator.
The control outputs a signal for dash display to display the
vehicle speed in MPH once every 0.1 seconds for 9.5
seconds. After that point, the dash display shows the
battery discharge indicator value once.
Section 2.3.4 Internal Resistance Compensation
This feature is used when the Battery Discharge Indicator
is present. Adjustment of this function will improve the
accuracy of the BDI.
Section 2.3.5 Handset
This is a multi-functional tool used with the LX, ZX, and SX
Series GE solid state controls. The Handset consists of a
Light Emitting Diode (LED) display and a keyboard for data
entry.
Features and functions:
•
=
Monitor existing system status codes for traction
controls. Monitor intermittent random status codes.
•
=
Monitor battery state of charge, if available.
•
=
Monitor hour meter reading on traction controls.
Monitor or adjust the control functions.
Section 2.3.6 RS 232 Communication Port
This serial communication port displays the vehicle speed
in MPH nine times, and then flashes a Status Code –90,
once, if the motor is overheating. Refer to Section 4.5 of
this manual, for additional description of Status Code –90.
If the motor is not overheating, the BDI value will be
displayed once, in place of Status Code –90 output.
The serial port also provides service personnel with
access to operating information and control settings via a
personal computer.
Section 2.3.7 Circuit Board Coil Driver Modules
Coil drivers are internal to the control card, and are the
power devices that operate the Line contactor coils. On
command from the control card, these drivers initiate
opening and closing the contactor coils. All driver modules
are equipped with reverse battery protection, such that, if
the battery is connected incorrectly, the contactors cannot
be closed electrically.
