Engine Speed Control (WW Governor)
Throttle and DMR circuit - This circuit starts from wire no. 50 which energizes when MB2 is kept ON. Supply of wire no. 50 goes to wire no.16D - 16A when MCB1 & 2 kept ON. Supply of wire no.16A goes to 16 through MH Idle & MH in Motoring position of both control stands. When wire no.16 gets energize, DMR coil gets +ve supply.
DMR coil gets -ve supply through NCI of PCS2, PCS1, PR3 and DMR will picks up. Due to which DMR self interlocks (16A-16F-16) gets closed. These interlock maintains +ve supply of DMR coil even after opening TH Notch. As we keep ECS on RUN ERR will get supply from wire no.16 through GFOLR NCI, ECS (RUN), GR1 NCI, Stop Button NCI, and LWS NCI and ERR picks up. Due to which NOI of ERR gets close on the branch of A, B, C, D solenoids.
Supply of wire no.16 goes to wire no.7A through 7B when MUSD1 and MUSD2 of respective control stand are in run position. On opening MH notch, its interlocks close on the branches of A, B, C, D solenoids. A, B, C, D solenoids coil get energize by wire no. 15A - 4, wire no. 12A - 4, wire no. 7C - 4, wire no. 3A - 4 respectively. As Solenoid picks up Engine speed increases as per throttle notches.
