MOTOR & MTG GP-SWING 4893486 - Caterpillar

Excitation Disable
The excitation disable switch is intended to provide a method of disabling the regulator field output (F1 and F2) in a manner which is safe for the regulator internal components. This feature is activated by shorting terminal 42 to terminal 50. Refer to the Customer Options illustration in Testing And Adjusting, "Wiring Diagrams". Activation of the excitation disable switch will also disable the undervoltage shutdown fault.
The generator will always have residual voltage still remaining; therefore, it is important to stop the generator set if downstream maintenance is to be performed.
Fault Reset
The fault reset contact is provided as a method to reset a resettable shutdown fault through the use of an external switch. This operation is equivalent to using parameter :96 in the user interface. Operating the fault reset contact (momentarily shorting terminal 43 to terminal 50) will reset a resettable fault and allow the voltage to build again. However, on the "original" fault handling versions, the display will still show the flashing fault and the fault will remain in the active position in memory. On the "new" fault handling versions, the display will stop flashing, return to showing ":01", and the fault will remain in the active fault parameter :92. The fault reset contacts should never be continuously shorted together. A momentary contact is all that is necessary to reset the fault.Utility 52/a Contacts
The generator 52/a auxiliary contact is closed only when the generator breaker is closed. The utility 52/a auxiliary contact is closed only when the breaker which ties the generator to the utility is closed. When BOTH of these breakers are closed the generator is assumed to be operating in parallel to the utility grid. This will activate (enable) the PF/KVAR mode when connected as shown in the wiring diagrams for this manual. It will also enable the reverse power fault if it is not already enabled. See description of parameter :34 in Systems Operation, "Parameters". See also descriptions of fault codes 604, 704, and 705 in Systems Operation, "Fault Codes".Remote Voltage Adjust Rheostat
The remote voltage adjust rheostat inputs are provided to allow the use of a 10 kOhm rheostat to remotely adjust the regulated voltage level. Increasing the resistance at the input causes the voltage to increase from the level configured in parameter :01. Turning the remote voltage adjust rheostat will not change the value displayed in parameter :01. However, it will modify an internal reference which will cause the generator output voltage to change in proportion to the rheostat movement. The range of the remote voltage rheostat adjustment is limited to a 10% change in output voltage from the value set in parameter :01. When installing the remote voltage adjust rheostat, always use shielded cable. See parameter :70 for an explanation of using the voltage adjust rheostat in conjunction with the serial communications control.Remote PF/KVAR Adjust Rheostat
The remote PF/KVAR adjust rheostat inputs are provided to allow the use of a 10 kOhm rheostat to remotely adjust the regulated PF or KVAR level. Connecting