BASIC OPERATION AND FEATURES
IT400 TRANSISTOR CONTROL
Page
8
April 2012
however, the resulting PMT should open the Line
contactor, in the event of a failure.
Section 2.3 Diagnostics
Section 2.3.1 Systems Diagnostics
The control detects the system's present operating
status and can be displayed to either the Dash
Display or the Handset. There are currently over 70
status codes that are available with IT systems using
Traction and Pump controls and Truck Management
Module (TMM). Along with the status code display
from the TMM, the IT control is capable of reducing
the current to the motor, alerting the operator of a
critical fault condition.
Section 2.3.2 Status Codes
Section 2.3.2a Standard Status Codes
The IT traction control has over 30 Status Codes that
assist the service technician and operator in trouble
shooting the vehicle. If mis-operation of the vehicle
occurs, a status code will be displayed on the Dash
Display for vehicles so equipped, or be available by
plugging the Handset into the “y” plug of the logic
card.
With the status code number, follow the procedures
outlined in DIAGNOSTIC STATUS CODES to
determine the problem and a solution.
Note: The Status Code Instruction Sheets do not
claim to cover all possible causes of a display of a
"status code ". They do provide instructions for
checking the most direct inputs that can cause status
codes to appear.
Section 2.3.2.b Stored Status Codes
This feature records the last 16 "Stored Status
Codes" that have caused a PMT controller shut down
and/or disrupted normal vehicle operation. (PMT type
faults are reset by cycling the key switch). These
status codes, along with the corresponding BDI and
hourmeter readings, can be accessed with the
Handset, or by using the RS 232 communications
port and dumping the information to a Personal
Computer terminal.
Section 2.3.3 Hourmeter Readings
This feature will display the recorded hours of use of
the traction and pump control to the Dash Display
each time the key switch is turned off.
Section 2.3.4 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. Features and functions:
Displays 100 to 0 percent charge.
Display blinks with 20% charge. Disables pump
circuit with 10% charge. Auto ranging for 36/48
volt operation. Adjustable for use on 24 to 80
volts.
Section 2.3.4.a 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,
SX and IT Series FSIP solid state controls. The
Handset consists of a Light Emitting Diode (LED)
display and a keyboard for data entry. Note, for
ordering purposes, a separate Handset part is
required for IT controls.
Features and functions:
Monitor existing system status codes for both
traction and pump controls. Monitor intermittent
random status codes.
Monitor battery state of charge, if available.
Monitor hourmeter reading on traction and pump
controls. Monitor or adjust the control functions.
Section 2.3.6 RS 232 Communication Port
This serial communication port can be used with
Interactive Custom Dash Displays to allow changes
to vehicle operating parameters by the operator. Or,
it can be used by service personnel to dump control
operating information and settings into a personal
computer program.
Section 2.3.6.a Performance Mode Selection
Manipulation of SW1 and SW2 allows the operator to
select the best vehicle performance for changing task
conditions or performance modes. There are four (4)
"operator interaction modes" that can be activated by
adjustment of Function 17, and manipulation of SW1
and SW2.
The operator may select any of four pre-set
interactive modes consisting of (4) Controlled
Acceleration levels, (4) Regen Current levels, (4) Min
Field Current levels, and (4) Top Speed Regulation
levels.
