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2 position control by host controller – Yaskawa Large Capacity Sigma II Series User Manual

Page 74

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3.2 Supplementary Information on Trial Operation

3-11

3

3.2.2 Position Control by Host Controller

If position control from the host controller has not been confirmed, disconnect the servomo-
tor from the equipment and perform a trial operation, otherwise the servomotor may run out
of control. Check servomotor operation as described in the following table.

Reference from

the Host Con-

troller

Check Item

Check Method

Review Items

JOG Operation
(Constant Refer-
ence Speed In-
put from Host
Controller)

Motor speed

Check motor speed as fol-
lows:

• Use the speed monitor

(Un000) on the Panel
Operator.

• Run the servomotor at low

speed. Input a reference
speed of 60 min

-1

for

example to check to see if
the servomotor makes one
revolution per second.

Check the parameter setting
at Pn300 to see if reference
speed gain is correct.

Simple Position-
ing

No. of motor
rotations

Input a reference equivalent
to one servomotor rotation
and visually check to see if
the shaft makes one revolu-
tion.

Check the parameter setting
at Pn201 to see if the number
of dividing pulses is correct.

Overtravel
(P-OT and N-OT
Used)

Whether the
servomotor
stops rotating
when P-OT
and N-OT sig-
nals are input

Check to see if the servomo-
tor stops when P-OT and N-
OT signals are input during
continuous servomotor oper-
ation.

Review P-OT and N-OT
wiring if the servomotor
does not stop.

Trial operation for
servomotor without load

M

Host
controller

Position control

Speed control

Reference
speed

SGDH
SERVOPACK