GE SX TRANSISTOR CONTROL IC3645SR4U404N2 User Manual

SX TRANSISTOR CONTROL 

 

 

Page 53 

January 2000 

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 

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 

 

1

3

4

5

2

7

9

6

8

10

11

12

13

14

15

BATTERY

NEGATIVE

3

4

5

6

8

11

10

12

10

8

9

PLUG Y

BATTERY
POSITIVE

9

1

A1-1

A1-2

A2-1

A3-1

A2-2

A3-2

 

 
Section 5.4.2  Typical Brush Wear Sensor Connections 

 

1

3

4

5

2

7

9

6

8

10

11

12

13

14

15

ARM

1

2

1

TRACTION

PUMP

PWR STEER

ARM

2

2

1

ARM

3

2

1