BASIC USES OF
Σ
-SERIES PRODUCTS
2.4.4 Supplementary Information on Test Run cont.
46
2)
When performing position control from the host controller
Check motor operation first and then conduct a test run as described in the table below.
Host
controller
Position
control
Speed
reference
Speed
control
Test run
for motor
without
load
Type: DR2
−
jjjj
M
M
GOOD
POOR
NOTE
Check the motor operation with the motor disconnected from the machine. If the host con-
troller does not perform position control correctly, the motor may run out of control.
Reference from
Host Controller
Check Items
Check Method
Review Items
Jogging
(constant-speed
reference input from
host controller)
Motor speed
Check the motor
speed as follows:
D
Use the speed
monitor (Un-00) of
the digital operator.
D
Run the motor at
low speed. For
example, input a
speed reference of
60 r/min and check
that the motor
makes one
revolution per one
second.
Check whether the
speed reference gain
value (user constant
Cn-03) is correct.
Simple positioning
Number of motor
revolutions
D
Input a reference
equivalent to one
motor revolution
and visually check
that the motor shaft
makes one
revolution.
Check whether the
dividing ratio count
(user constant
Cn-0A) is correct.
Overtravel (when
P-OT and N-OT
signals are used)
Whether the motor
stops rotating when
P-OT and N-OT
signals are input
D
Check that the
motor stops when
P-OT and N-OT
signals are input
during continuous
motor operation.
If the motor does not
stop, review the
P-OT and N-OT
wiring.
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