Lincoln Electric X-TRACTOR 3A Service Manual page 11

X-TRACTOR ® 3A
- THEORY OF OPERATION SECTION -
Theory Of Operation ............................................................................................................ Section E
Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .E-2
Motor Control Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .E-3
Cleaning Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .E-4
TERMINAL
STRIP
TABLE OF CONTENTS
Figure E.1 - Block logic diagram
K1 MOTOR
3 PHASE 3 PHASE
F1
T1
TIMER
K1
AUXILIARY
ACTIVATION
CONTACTS
SIGNAL
N.O.
24VAC
460V
CONTROL
TRANSFORMER
E-1
RELAY
M1
FAN
MOTOR
3Φ
CLEANING
SWITCH
T1 TIMER
CONTACTS
N.O.
T2 CONTACTS
S2
24VAC
ON/OFF
SWITCH
T2
AUTO/MANUAL
TIMER
ACTIVATION
SIGNAL
THEORY OF OPERATION
CLEANING
DIGITAL
SOLENOID
TIMER
VALVE
N.O.
F1 AUXILIARY
CONTACTS
SWITCH
PINS
1 + 2
REMOTE
RECEPTACLE