TM 10--3510--221--24 0007 00--1 CONTROL SYSTEM THEORY OF OPERATION 0007 00 CONTROL SYSTEM The control system provides the electrical interface between the external power and the LADS electrical and electronic components. This system also controls all aspects of LADS automated operation and provides the interface to the controls and indicators that the operator uses when performing laundry operations. Control system operation consists of the following sub--operations. INPUT POWER DISTRIBUTION AND CONDITIONING External 208 VAC, 3--Phase, 50/60 HZ electrical power is connected to the disconnect switch (SW1) located in the main control enclosure. This switch removes power from the LADS when turned off and provides power to the power distribution block (TB1) when turned on.  At the distribution block power is divided and distributed to circuit breakers that protect 3--phase and single--phase circuits routed throughout the LADS. 3--phase power is connected to the inverters and individual contactors used to supply power to the various motors. Single--phase 110 VAC power is connected to a ground fault interrupt (GFI) circuit for external lighting and the control power switch (SW2). When SW2 is turned on power is applied to two DC power supplies. Power supplies (PS1 and PS2) are used to supply +5, +12, and --12 volts direct current (VDC) power to various circuit boards used to control LADS operation. A phase monitor (PM800) is connected to the power distribution block to continually analyze the input power provided to the LADs. If an out of tolerance condition exists control power will be automatically removed. EXTERNAL POWER (208 VAC, 3--PHASE, 50--60 HZ) MAIN DISCONNECT SWITCH (SW1) POWER DISTRIBUTION BLOCK (TB1) INVERTER HEATER BLOWER CONTACTORS/ PROTECTORS 208 VAC, 3--PHASE CIRCUIT BREAKERS CONTACTORS/ PROTECTORS DRYER BLOWERS WATER PUMPS INVERTERS DRUM MOTORS CONTACTORS/ PROTECTORS INVERTER CONDENSER FAN THERMAL FLUID PUMP COOLING FANS 110 VAC FUSES TERMINAL BLOCK (TB2) TERMINAL BLOCK (TB6) AIR SYSTEM AUXILIARY LIGHTING GFI OUTLET PHASE MONITOR FUSES TERMINAL BLOCK (TB9) POWER SUPPLY (PS1) CONTROL POWER SWITCH (SW2) 110 VAC, SINGLE PHASE CIRCUIT BREAKERS FUSE +12 VDC TO CIRCUIT BOARDS, SENSORS, SWITCHES. AND VALVES FUSES +5, +12, --12 VDC TO CIRCUIT BOARDS AND CARD CAGE 110 VAC TO CONTACTORS, VALVES, SWITCHES, AND TB7 POWER SUPPLY (PS2) TERMINAL BLOCK (TB2)