— 3-24 —
B
B
3
3
t
t
y
y
p
p
e
e
B
B
5
5
t
t
y
y
p
p
e
e
3.4. Turning on Main Power
3.4.4. Turn the Power and the Servo on.
2
2
3
3
t
t
y
y
p
p
e
e
2
2
5
5
t
t
y
y
p
p
e
e
3.4.4. Turn the Power and the Servo on.
(1) Turn on the power.
(2) The System checks DRDY output after 2 seconds.
(3) If the System is in normal state, turn ON the SVON input. The System gets in Servo ON state.
(4) Then input a necessary operation command.
à If the System does not outputs the DRDY output normally, take appropriate measures
referring to “10. Alarm.”
Figure 3-20: Flow of Power on and Servo ON.
Timer
Power on
Action for alarm Servo lock
Operating Motor
Master controller
(User’s controller)
Driver Unit side
Initialization
DRDY closed DRDY open
SVON
NG
OK
NG
OK
Operation command
DRDY
check
Action for alarm
Check
conditio
Figure 3-21: Timing for Power and Servo ON.
Confirmed
2 sce. approximately
See note
ON
OFF
30ms min.*
ON
OFF
ON
OFF
Control power
Main power
DRDY output
SVON input
Operation
command
Home Return etc.
See note.
* It takes approximately 30 ms to turn the servo on after SVON input is activated. Start
the operation after 30 ms after the SVON input is ON.
！
Caution : Turn SVON input ON after the main power is turned on. Turn off the
SVON input before the main power is turned off. If the main power is
turned off leaving the SVON input ON, the Driver Unit will give “Main
power low voltage” alarm.
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