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14. ABSOLUTE POSITION DETECTION SYSTEM
(4) At the time of emergency stop reset
(a) If the power is switched ON in the emergency stop state
The emergency stop state can be reset while the ABS data is being transferred.
If the emergency stop state is reset while the ABS data is transmitted, the base circuit is turned ON
95[ms] after resetting. If the ABS transfer mode (ABSM) is OFF when the base circuit is turned ON, the
ready (RD) is turned ON 5[ms] after the turning ON of the base circuit. If the ABS transfer mode (ABSM)
is ON when the base circuit is turned ON, it is turned OFF and then the ready (RD) is turned ON. The
ABS data can be transmitted after the emergency stop state is reset.
The current position in the driver is updated even during an emergency stop. When servo-on (SON) and
ABS transfer mode (ABSM) are turned ON during an emergency stop as shown below, the driver
transmits to the PC or PLC...etc the current position latched when the ABS transfer mode (ABSM)
switches from OFF to ON, and at the same time, the driver sets this data as a position command value.
However, since the base circuit is OFF during an emergency stop, the servo-lock status is not
encountered. Therefore, if the servo motor is rotated by external force or the like after the ABS transfer
mode (ABSM) is turned ON, this travel distance is accumulated in the driver as droop pulses. If the
emergency stop is cleared in this status, the base circuit turns ON and the motor returns to the original
position rapidly to compensate for the droop pulses. To avoid this status, reread the ABS data before
clearing the emergency stop.
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
95[ms]
OFF
ON
5[ms]
Power
supply
Servo-on
(SON)
Emergency stop
(EMG)
ABS transfer mode
(ABSM)
ABS request
(ABSR)
ABS transmission
data ready
(ABST)
Send (ABS) data
Base circuit
Ready
(RD)
Reset
During transfer of ABS
ABS data
Operation
enabled
(Pin 17)
(Pin 18)
(Pin 25)
(ABSB0:Bit0) (Pin22)
(ABSB1:Bit1) (Pin23)
Содержание LECSB Series
Страница 1: ...PRODUCT NAME AC Servo Motor Driver MODEL Series LECSB Series Doc no JXC OMT0021 B ...
Страница 17: ...7 App 6 Compliance with the European EC directives App 7 App 7 Conformance with UL C UL standard App 10 ...
Страница 255: ...10 1 10 OUTLINE DRAWINGS 10 OUTLINE DRAWINGS 2 10 1 Driver 2 10 2 Connector 4 ...