User Manual Of EL7-EC** AC Servo
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3. Power on sequence diagram
Control
circuit
(L1C、L2C)
CPU
Init
Servo ready
S-RDY
Servo enabled
SRV-ON
Dynamic
brake
Servo status
SRV-ST
Motor
Power on
External brake
deactivated
BRK-OFF
Position,
velocity, torque
command
OFF
ON
Reset
Usual action
Not Ready
Ready
Input coupler OFF
Input coupler ON
Activated
Deactivated
Disabled
Enabled
Power OFF
Power ON
Brake ON
Brake OFF
NO command
Command
*1
*2
Main power
supply
(R、S、T)
OFF
ON
Please enter servo status, position, velocity, torque command as sequence diagram
above.
**
1. S-RDY signal is given after CPU initialization and main power supply powered on.
2. SRV-ST signal is received when servo driver is enabled. Command input is not
allowed yet.