PLUG GP 4646576 - Caterpillar

Illustration 6 g02138679
Cat ET Hystat Motor Calibration Sequence
Motor calibration begins. The pump is ramped up to full current with a reduced engine speed.
Motor current steps up to the low end of the "Motor Minimum Calibration Range". Motor current is slowly increased until there is a change in motor speed.If motor speed immediately jumps up at the low end of the calibration range, the following error codes may be seen in Cat ET:
"10E0 – Left Motor Minimum Current Out of Range Low"
"10E6 – Right Motor Minimum Current Out of Range Low"If no change in motor speed is detected by the high end of the calibration range, the following error codes may be seen in Cat ET:
"10E1 – Left Motor Minimum Current Out of Range High"
"10E7 – Right Motor Minimum Current Out of Range High"
Motor current is quickly ramped up to the lower end of the "Motor Maximum Calibration Range".
Motor current is slowly increased until the "Gear Ratio" value equals the target.If the target "Gear Ratio" is not reached in the "Motor Maximum Calibration Range", the following error codes may be seen in Cat ET:
"10E4 – Left Motor Maximum Gear Ratio Out of Range Low"
"10E3 – Left Motor Maximum Current Out of Range High"
"10EA – Right Motor Maximum Gear Ratio Out of Range Low"
"10E9 – Right Motor Maximum Current Out of Range High"If the "Gear Ratio" starts out above the target "Gear Ratio", the following error codes may be seen in Cat ET:
"10E2 – Left Motor Maximum Current Out of Range Low"
"10E5 – Left Motor Maximum Gear Ratio Out of Range High"
"10E8 – Right Motor Maximum Current Out of Range Low"
"10EB – Right Motor Maximum Gear Ratio Out of Range High"
Motor calibration is complete.The pump and motor currents are quickly ramped to zero.
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Example of Cat ET Error CodeNote: A common root cause of a failed "Hystat Pump and Motor Solenoid Calibration" is contamination of the solenoid(s), pump, or motor controller(s). Contamination will restrict motion and/or cause hysteresis and will prevent a steady gear ratio to be attained during calibration. If the calibration fails, do NOT adjust the "Min" or "Max" stops of the forward or reverse pumps. Refer to Table 2 for additional information of each error code.
Table 2
Cat ET Error Codes for Hystat Pump and Motor Solenoid Calibration    
Error ID and Description    Reasons for the Error Codes    Possible Causes    
"10D4 - Left Pump Minimum Current Out of Range Low "
"10DA - Right Pump Minimum Current Out of Range Low"     Pump starts to stroke or is always on stroke at a current outside the lower end of the calibration range.     "Pump Null" adjustment may be off
Contamination in the pump control
Motor speed sensor is disconnected
Malfunctioning or sticking solenoid    
"10D5 - Left Pump Minimum Current Out of Range High"
"10DB - Right Pump Minimum Current Out of Range High"     Pump does not start to stroke at a current outside the upper end of the calibration range.     "Pump Null" adjustment may be off
Contamination