ROLLER-FREEWHEEL 1T0679 - Caterpillar

Engine:
3606 (S/N: 8RB)
3608 (S/N: 6MC)
3612 (S/N: 9RC; 9FR; 2NZ)
3616 (S/N: 1PD; 1FN)
Reference: Engine News, SEBD9288, August 2000, "Software Available For Programming Allen-Bradley Programmable Logic Controller (PLC)"Reference: Systems Operation, Testing and Adjusting, and Troubleshooting, RENR2490, "Marine Monitoring System II For 3600 Engines"Reference: Systems Operation, Testing and Adjusting, and Troubleshooting, RENR2491, "Generator Monitoring System For 3600 Engines"Reference: Electrical System Schematic, RENR2459, "3600 Marine Monitor System II (MMS II) AND GMS Electrical Schematic"Description of Change: The Programmable Logic Controller (PLC) has been updated in Revision 5 of the 179-8805 Monitor Software and the 179-8909 Monitor Software .The Operator Configuration Screen will display the following items:
Software Part Number
Revision NumberWhile it is not mandatory to use Revision 5, the updated software provides additional features and benefits that were previously unavailable.Revision 5 contains numerous changes in order to address issues that affect the function of the PLC.A list of the added features and benefits for Revision 5 follows:
added Marine Society requirements
requested features from customers
created improvements in the PLC
latest engineering enhancements
added alarm setpoints and shutdown setpoints
additional engine configurations
added locations for output on Remote Relay Panel configurationsSome Setpoints for the former Software were at fixed pressures.
Note: Revision 5 will calculate the engine setpoints by using the engine RPM. The alarm setpoint and the shutdown setpoint will now be calculated by the software package.The actual setpoints can be determined by using the formulas in Table 2 and Table 3 that follow:Changes to the Alarm Setpoints and the Shutdown Setpoints were made.
Table 1
Changes that were made to Alarm Setpoints    
Parameter     Type of Change     Former Value     Current Value    
"Turbo Speed High Alarm"     The alarm setpoint has decreased.     35,000 RPM     32,000 RPM    
"Fuel Temperature High Alarm"     The alarm setpoint has increased.     (50 °C)(122 °F)     (66 °C)(151 °F)    
"AC/OC Water Temperature High Alarm"     The alarm setpoint has decreased. (1)    
60 °C (140 °F)    
39 °C (102 °F)    
"Inlet to Turbo Exhaust Temperature High Alarm"     The alarm setpoint has increased. (2)    
630 °C (1166 °F)    
650 °C (1202 °F)    
( 1 ) Only engines with 32 °C (90 °F) water temperature regulators in the aftercooler circuit are affected by this change.
( 2 ) This affects only High Output Engines.
Table 2
Calculate the Alarm Setpoints by using this Method.    
Name of the Alarm Setpoint         Conversion Factor    
"AC/OC Water Pressure Low"     Multiply the Engine RPM.     by
0.07 kPa (0.01 psi)    
"Jacket Water Pressure Low"     Multiply the Engine RPM.     by
0.07 kPa (0.01 psi)    
"Raw Water Pressure Low"     Multiply the Engine RPM.     by
0.07 kPa (0.01 psi)    
Table 3
Calculate the Shutdown Setpoints by using this Method.    
Name of the Shutdown Setpoint         Conversion Factor    
"Engine Oil Pressure Low"     Multiply the Engine RPM.     by
0.4 kPa (0.058 psi)    
"Jacket Water Pressure Low"     Multiply the Engine RPM.     by
0.05 kPa (0.007 psi)    Engine Configuration Additions
The protection system