Datasheet

15
Forward / Reverse starter (Electrical Interlocking)
S0 = ‘OFF’ Push button
S1 = ‘ON’ Push button
K1 = Line contactor
K2 = Star contactor
K3 = Delta contactor
K4 = Star delta timer (7PU60 20)
F2 = Overload relay
F1 = Backup fuse
F3 = Control circuit fuse
S0 = ‘OFF’ Push button
S1 = ‘ON’ Push button
S = Maintained command
switch
K1 = Main contactor
F1 = Main circuit fuse
F2 = Overload relay
F3 = Control circuit fuse
S0 : 'OFF' Push button
S1 : 'ON Clockwise' Push button
S2 : 'ON Anti-clockwise' Push button
S : Selector Switch 'Clockwise - OFF - Anti-clockwise'
Main circuit
Push button control
(momentary command)
Selector switch control
(command needs to be maintained)
K1 : Clockwise contactor
K2 : Anti-clockwise contactor
F1 : Main circuit fuses
F2 : Overload relay
F3 : Control circuit fuse
Main circuit Control circuit for push button control
(momentary command)
a) Main circuit b) Control circuit for
momentary-contact control
c) Control circuit for
maintained-contact control
Direct On Line starter
Star Delta starter
Typical Circuit Diagrams