Clark CTS 450 Control ET207 Index:

About this Class……………………………………………………………………………….. 3
Class Objectives……………………………………………………………………………….. 3
Class Content…………………………………………………………………………………… 4
Sequence of Operations……………………………………………………………………… 4
Troubleshooting………………………………………………………………………………… 4
Quiz………………………………………………………………………………………………… 4
About Safety …………………………………………………………………………… 5
Section 1. EV-100S Control Sequence of Operations……………………………. 6
Identification of Abbreviations………………………………………………….. 6
Identification of Schematic Symbols………………………………………….. 7
Sequence 1. Drive Control………………………………………………………… 8
Sequence 2. Connect the Battery……………………………………………….. 10
Sequence 3. Battery Indicator and Pump Motor………………………….. 12
Sequence 4. Hour Meter, P/S Operation, and S.R.O…………………… 14
Sequence 5. Energizing the Directional Contactors …………………….. 16
Sequence 6. Contactor Closing and Capacitor Precharge …………… 18
Sequence 7. #1 and #5 REC Turn On ……………………………………….. 20
Sequence 8. 1C Capacitor Charging and Reactor Operation…………. 22
Sequence 9. #2 REC Turn On and #1 REC Turn Off …………………….. 24
Sequence 10. Flyback…………………………………………………………………. 26
Sequence 11. Accelerator , Thermal Protector (TP) and PMT………… 28
Sequence 12. 1A Contactor Operation ……………………………………….. 30
Sequence 13. Plugging………………………………………………………………… 32
Sequence 13. Plugging (continued)………………………………………………. 34
Sequence 13. Plugging (continued)………………………………………………. 36
Section 2. EV-100S Control Troubleshooting ………………………………………… 38
Symptom 1. Directional contactors will not close………………………….. 39
Symptom 2. Directional contactors close, no power,
no audible SCR hum, truck inoperable with
accelerator in SCR range …………………………………………. 40
Symptom 3. Directional contactors close, no power,
audible SCR hum, truck inoperable with
accelerator in SCR range …………………………………………. 41
Symptom 4. Directional contactors close once or twice
and then remain open, P.M.T. trips……………………………. 42
Symptom 5. One directional contactor closes with normal
operation, but other will not close……………………………….. 42
Symptom 6. Stiff plug and/or plugging distance will not adjust…………. 43

Symptom 7. 1A contactor will not close…………………………………………. 43
Symptom 8. P.M.T. trips every time hydraulic switches
are closed or open …………………………………………………… 44
Symptom 9. Power steer motor does not operate……………………………. 44
Symptom 10. Lift/tilt attachments do not operate………………………….. 45
Symptom 11. Power Steering does not operate……………………………….. 45
Symptom 12. Hydraulic function does not operate………………………….. 46
Section 3. EV-100 LXT Diagnostics Control…………………………………………….. 47
Diagnostic Status Codes………………………………………………………………….. 58
E357 Std. Programing Specifications……………………………………………… 91
E357 Hi-Proformance Programing Specifications……………………………. 92
E357 Pump Programing Specifications………………………………………….. 93
E235 Programing Specifications……………………………………………………. 94
TM247 Programing Specifications…………………………………………………. 95
ESM245/247 Programing Specifications………………………………………… 96
NP246 Programing Specifications………………………………………………….. 97
NP15/20/22 Programing Specifications…………………………………………… 98
OP15 Programing Specifications……………………………………………………. 99
E685 EV 200 Programing Specifications………………………………………… 100
E912 EV200 Programing Specifications…………………………………………. 101
Section 4. ……………………………………………………………………………………………… 102
Control Card Identification…………………………………………………………… 102
Internal Resistance Compensation Worksheet……………………………….. 103
Hi-Proformance Schematic……………………………………………………………. 104
Pump Control Schematic………………………………………………………………. 105
TM Schematic………………………………………………………………………………. 106
LXT Schematic……………………………………………………………………………… 107