PLATE-REAR END 4N4377 - Caterpillar

The control panel is the control station for the engine. The control panel has the following controls on the front of the panel: Marine Power Display (MPD), Engine Control Switch (ECS), emergency stop switch and indicator lamps. The control panel contains the following controls on the inside of the panel: override switches, control relays and diodes.Control Panel (Marine Power Display)
Illustration 1 g01632380
Control panel
(1) Marine Power Display
(2) "ECM Ready" lamp
(3) Pyrometer
(4) Override switch (crank)
(5) Prelube override switch
(6) Marine override switch
(7) Torque limit switch
(8) Diodes D1 to D10
(9) Power relay
(10) "STE" relay
(11) "Run 1" relay
(12) "STPE" relay
(13) "Run 2" relay
(14) "ECSIS" relay
(15) Engine control switch (ECS)
(16) Emergency stop switch
(17) "ECM Active" lamp
(18) Alarm (horn)
(19) Overspeed indicator
(20) Emergency stop lamp
(21) "RSR" relay
(22) "Reset 1" relay
(23) "Stop 1" relay
(24) "Reset 2" relay
(25) "Stop 2" relay
(26) Horn relay Power Distribution Panel
The power distribution panel distributes power to the various systems on the engine. The power distribution panel has two external connections for the battery. The power distribution panel has multiple breakers that are mounted externally. The power distribution panel contains the following controls on the inside of the panel: control relays, circuit breakers, diodes, control switches and timer.
Illustration 2 g01633253
Power distribution panel
(27) Circuit breaker for the primary ECM (20 Amp)
(28) Circuit breaker for the secondary ECM (20 Amp)
(29) Circuit breaker for the prelube and air shutoff circuits (40 Amp)
(30) "Marine Power Display (MPD)" circuit breaker (20 Amp)
(31) Starter and alternator circuit breaker (70 Amp)
(32) "PPR2" relay
(33) "Relay 4A"
(34) "Relay 4"
(35) "Relay 3A"
(36) "Relay 3"
(37) "Relay 2A"
(38) "Relay 2"
(39) "Relay 1"
(40) Air shutoff timer
(41) General alarm relay
(42) "SD Notify" relay
(43) Starting motor magnetic switch 2
(44) Starting motor magnetic switch 1
(45) "PPR1" switch
(46) Air shutoff switch (ASOS) Control Panel (EMCP 3.3)
Illustration 3 g01633295
EMCP 3
(47) Generator control (EMCP 3.3)
(48) Annunciator
(49) Connector for the generator
(50) Connector for the engine
(51) Connector for the customer Relay Panel
The relay panel is mounted on the left side of the engine. The relay panel contains relays that switch the power to the engine sensors between the primary ECM and secondary ECM.
Illustration 4 g01633453
Relay panel