CHAPTER 4: ELECTRICS
4-10
1.2.5 Contactors
(a) Hydraulic Pump Motor Contactor – KM1
Controls oil pump motor On/Off.
Designation Description
A Input (from QM1)
B Output (to M2 oil pump)
C Contactor control main power
D On/Off position
(b) Safety Circuit Contactor -- KI
Supplies power to the Servo Amp as long
as all safety devices are in the correct
operating state.
Designation Description
A
Main power I/P（From QF1）
B
Main power O/P（To servo amplifier）
C
Motion help contact（To PLC）
D Contactor control main power
E Operating State (I = energized / O = De-energized)
ALPHA ST 320
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