
B-65280EN/05 FANUC AC SPINDLE MOTOR αi series 5.FUNCTION DESCRIPTIONS
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(2)Performing speed range switching by checking only the power line status
confirmation signal (RCHA) (bit 3 of parameter No. 4014 = 0)
(a) Switching from low-speed characteristic to high-speed characteristic
Low speed (= 1)
High speed (= 0)
Low speed (= 1)
High speed (= 0)
Low speed (= 1)
High speed (= 0)
Closed
Open
Open
Closed
Low speed (= 1)
High speed (= 0)
Low speed (=1)
High speed (=0)
Speed range switching request
signal (RSLA)
PMC
→
CNC
Power line switching signal
(RCHPA)
CNC
→
PMC
Clutch/gear signal
(CTH1A, 2A) PMC
→
CNC
Low-speed characteristic
magnetic contactor
High-speed characteristic
magnetic contactor
Power line status confirmation
signal (RCHA) PMC
→
CNC
Speed range switching
completion signal (RCFNA)
CNC
→
PMC
(b) Switching from high-speed characteristic to low-speed characteristic
High speed (= 0)
Low speed (= 1)
High speed (= 0)
Low speed (= 1)
High speed (= 0)
Low speed (= 1)
Open
Closed
Closed
Open
High speed (= 0)
Low speed (=1)
High speed (=0)
Low speed (=1)
Speed range switching request
signal (RSLA)
PMC
→
CNC
Power line switching signal
(RCHPA)
CNC
→
PMC
Clutch/gear signal
(CTH1A, 2A) PMC
→
CNC
Low-speed characteristic
magnetic contactor
High-speed characteristic
magnetic contactor
Power line status confirmation
signal (RCHA) PMC
→
CNC
Speed range switching
completion signal (RCFNA)
CNC
→
PMC