NSK Megatorque PS Series, User Manual

Page: 204 / 370

— 8-44 —
Signal timing
The figure below illustrates signal timing of this positioning operation.
Fig 8-25: Signal timing for automatic program execution at the power-on.
Operation sequence
Max. 3.2 s
closed
open
closed
open
Ouput NRM
Output SVST
Max. 0.5 ms
closed
open
Output BUSY
closed
open
Output IPOS
(FW <
0: CFIN
)
TI3200.0 IQ1 IQ1 TI1000.0 TI1000.0
1 s
ON
OFF
Power
ON
OFF
Input HLD
Approximately 3 seconds
1 s 3.2 s
After confirmation of NRM state, start the program automatically.
In HLD state
1)
2)
3)
4)
1) Confirm that the input HLD is OFF. (The input HLD is effective as the contact polarity
is normally closed.)
2) Turn on the main and the control power.
3) When the time for initialization of the CPU elapses, the output NRM is settled and the
channel program 0 starts automatically.
At this moment, the System is in the HOLD state, thus holding the execution of
commands in the program. However the port of output BUSY (In-operation) is closed.
4) Activate the input HLD to cancel the holding state.
After waiting time of 3.2 seconds, the System repeats a motion of 90-angle degrees
with one second pausing time between.
Turn the input HOLD off when temporally stopping the operation.