Starting Origin Search - Omron CJ1W-NC271 - 12-2009 Operation Manual

Origin Search Operation
8-2-5

Starting Origin Search

Timing Chart
314
When origin searches are performed using reversal mode 1 to 3 as the opera-
tion mode, either enable the Servo Drive's dynamic brake, or set the Stop
Selection for Drive Prohibition Input for G5-series Servo Drives (Pn505), the
Stop Selection for Drive Prohibit Input for G-series Servo Drives (Pn066) or
Select Stop when Prohibited Drive is Input for W-series Servo Drives
(Pn001.1) to 1 (decelerates to a stop using the immediate stop torque set in
Pn511 for G5 Series, the emergency stop torque set in Pn06E for G Series or
Pn406 for W Series or lower and locks Servo in zero clamp mode) or 2 (decel-
erates to a stop using the immediate stop torque set in Pn511 for G5 Series,
the emergency stop torque set in Pn06E for G Series or Pn406 for W Series
or lower and puts Servo in free run state) so that the Servomotor stops prop-
erly when a limit input is received.
Origin search is performed according to the speed command value set in the
Axis Operating Output Memory Areas and started when the ORIGIN
SEARCH Bit turns ON. Execute ORIGIN SEARCH when the Busy Flag for the
corresponding axis is OFF. If ORIGIN SEARCH is executed while the axis's
Busy Flag is ON, a Multistart Error (axis error code: 3050) will occur and ORI-
GIN SEARCH will not be executed.
When starting ORIGIN SEARCH, make sure that the ORIGIN SEARCH Bit
will remain ON until the Busy Flag turns ON.
If the SERVO UNLOCK, DEVIATION COUNTER RESET, EMERGENCY
STOP, OR DECELERATION STOP command bit is turned ON, the ORIGIN
SEARCH command will be ignored. Be sure that all of these command bits
are OFF before executing an origin search.
The following timing charts are for when ORIGIN SEARCH is executed with
the origin search operation set to reversal mode 1, the origin detection mode
set to origin proximity input signal reversal, and the origin search direction set
to forward.
Timing Chart Operation
Origin proximity 1
input signal
0
Origin input signal 1
(Phase Z signal)
0
Origin search
reverse direction
Section 8-2
Final travel distance to return to zero point
Origin search direction
Stop Start
Limit input signal in origin search direction