TM    9-6115-669-13&P Table 1-4 Control Signals Between Generator Sets 150 kW and PDU. ControlCabinetAssembly, Designation OV  (24-VDC  system) BATTLE SHORT (S21) OV  (excitation  of  K12) OV J9 Parallel Operation, Contact A B C D +24V E Interlock loop F AC CIRCUIT INTERRUPTER ON G OV H PARALLEL OPERATION ON (S9) J BATTERY  CHARGING  CONTROL OIL PRESSURE K OIL TEMP-CYLINDER HEAD AIR FILTER K UNDER/OVER  FREQUENCY K UNDER/OVER VOLTAGE K GENERATOR OVER TEMPERATURE K OVERLOAD K REVERSE POWER K +24V L LOW FUEL M Affects EPP III, OV (24 VDC system) ECS, BATTLE SHORT switch ECS, EMERGENCY switch Commercial Power Converter op- eration EPP III operation 2nd Gen Set 150kW, J9-G, N-O con- tact K14 2nd Gen Set 150kW, J9-F, energizes K20 2nd Gen Set 150kW, J9-J, energizes K18 2nd Gen Set 150kW, J9-H, OV (24 VDC system) ECS, fault message ECS, fault message ECS, fault message ECS, fault message ECS, fault message ECS, fault message ECS, fault message ECS, ON message Gen Set 150kW ECS, LOW FUEL message Gen Set 150kW +24V I N EPP III, +24V (24 VDC system) +24V Power distribution Active power output Cable shield OV Power distribution Reactive power Cable shield P R S T U X Y Z 2nd Gen Set 150kW, J9-U, N-C con- tact K19 2nd Gen Set 150kW, J9-R, N4,10 2nd Gen Set 150kW, J9-S, N4,11 2nd Gen Set 150kW, J9-T, cable shield 2nd  Gen  Set  150kW,  J9-P,  energizes K19 2nd Gen Set 150kW, J9-Y, N2, E 2nd Gen Set 150kW, J9-X, N2, A 2nd Gen Set 150kW, J9-Z, cable shield 1-34