TMM7A

INSTALLATION AND OPERATION MANUAL

SX TRANSISTOR CONTROL

Page 53

Section 5. TRUCK MANAGEMENT MODULE (TMM) Section 5.1 General Features

The Truck Management Module is a multi-functional accessory card (IC3645TMM7A), or an integral function of the SR Pump control when used with the SX Family of Traction controls. The Module provides the OEM with the ability to initiate status codes or operator warning codes to be displayed on the Dash Display whenever a normally open switch or sensor wire provides a signal to the Module.

The TMM Module can be used to display a separate status code indicating an over temperature of traction motors, hydraulic motors, or any other device or system that can activate a switch that closes.

It can also be used as a Brush Wear Indicator (BWI). The Brush Wear Indicator is designed to detect a “worn-out brush” and display a fault code on the Dash Display to warn maintenance personnel that the motor brushes need to be replaced before they wear to the point of causing destructive damage to the motor commutator surface. The BWI function is compatible with any sensor that short circuits to the motor armature to signal limits of brush wear.

Note: Motor armature must be in the positive side of the battery circuit.

Section 5.2 Operation

The Module utilizes 9 OEM input points and 3 output points that connect to the "Y" plug on the traction logic card. Due to the low level signal value of this output, shielded wire should always be used to insure proper operation. The input to the Module is either a switch or sensor wire closure to battery negative or positive. The following table outlines the status code displayed for each input, when that point is closed to battery negative or positive, as indicated.

TMM7A	Pump
Card	Control	Status
Terminal	Terminal	Code	Connect To
TB1	P16	90 *	Neg
TB3	P11	91	Neg
TB4	P15	92	Neg
TB5	P3	93 *	Pos
TB6	P4	93 *	Pos
TB8	P5	94	Pos
TB10	P6	94	Pos
TB11	P8	95	Pos
TB12	P9	95	Pos

*Status codes 90 and 93 can also be programmed with the Handset to reduce the speed of the truck from 100 to 0 percent-on-time.

IMPORTANT NOTE: Status Codes 93, 94 and 95 are only checked when a neutral signal is present (i.e., open start switch or open F/R switch). The status code is displayed and the speed limit enabled when the control is returned to the run mode. Do not use status code 93 speed limit for applications requiring immediate speed limit on switch closure.

Typical wiring diagrams and outline drawings for the TMM7A accessory card and SR family of Pump TMM functions are shown in Sections 5.4 and 5.5.

Section 5.3 Installation

WARNING: Before any adjustments, servicing or act requiring physical contact with working components, jack drive wheels off the floor, disconnect the battery and discharge the capacitors in the traction and pump controls, as explained in Section 4.4.

The TMM7A accessory card should be mounted to a flat surface (in any plane) in an area protected from water, oil and battery acid. Mounting dimensions are shown in Section 5.5. Two (0.187 inch, 4.75mm) mounting holes are provided.

Section 5.4 Connection Diagrams

Section 5.4.1 TMM7A Card Connections