— 9-1 —
9. Operational Function
9.1. General Operation and Function
9.1.1. Servo “ON”
l
After the Driver Unit power is turned on and its DRDY output circuit becomes closed, making
SVON input ON should make motor servo-on.
l
The position error counter will be cleared when SVON input is OFF.
l
When SVON input is ON, the MO command results in servo-off.
l
The SV or MS command will cancel this MO command effect.
Figure 9-1
CPU initialize (2 sec approx.)
30ms max.
Invalid
Close
Open
ON
OFF
ON
OFF
Power supply
DRDY output
SVON input
Motor servo
RS-232C
command
ON
OFF
SV or MS
MO
SV or MS
SV or MS
5ms max.
l
Take the following precaution when turning ON/OFF the main power supply and the control
power supply separately :
à
When turning on the main power supply with the control power supply turned on :
Turn on the main power supply first, then the SVON input.
à
When turning off the main power supply with the control power supply turned on :
Turn off the SVON input first, then the main power supply.
* When the main power supply is turned off in the servo-on state, the Driver Unit
outputs the AC Line under-voltage alarm. (Once this alarm occurs, it will not recover
unless the power is turned on again.)
Figure 9-2
1sec or more
ON
OFF
ON
OFF
Control power
supply
Main power
supply
SVON input
ON
OFF
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Содержание MEGATHRUST ESA-LYB2T15-21
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