-
43
-
No.JXC
※
-OMU0030-A
8.4 Servo ON
Servo ON signal is not assigned to the parallel I/O of this controller. When the power supply is supplied
to controller, “Servo on” is automatically commanded in the controller. At this time, when the alarm is
not generated, the electric actuator becomes the servo on state after a few seconds.
(Just after the motor power is applied, it may take up to 10 seconds for ALARM output depending on
the electric actuator position.)
When the electric actuator becomes the servo on state normally, Power
LED (a) changes from flashing state to no-flashing state.
The table below shows conditions for becoming servo off state.
Mode
Conditions for becoming servo off state.
Indication
when servo
OFF
Manual
mode
1) Alarm generated
→Servo ON is recovered when the set button (g) is
pressed and the alarm is released.
2) Press the Forward button (i) and Reverse button (j)
simultaneously for 3 seconds or longer. Manual Servo
OFF
→Press the Forward button (i) and Reverse button (j)
simultaneously again for 3 seconds or longer. Manual
Servo ON
Power LED
(a): Flashing
Auto
mode
1) Alarm generated
→Servo ON is recovered when the RESET input is ON
and the alarm is released.
2) When CN4 parallel I/O STOP input signal is ON
→Servo ON is recovered when the STOP input signal is
OFF.
Power LED
(a): Flashing
8.5 Response time for the controller input signal
Response delay due to the controller input signal contains following factors.
(1) Controller input signal scan delay
(2) Delay due to input signal analysis
(3) Delay of command analysis
Leave an interval of a minimum of 15 ms (recommendation is 30 ms) between input signals and
maintain the state of the signal for a minimum of 15ms (recommendation is 30 ms), because PLC
processing delays and controller scanning delays can occur. Time the input signal conditions
according to the response output signals.
When one command is made by inputting several I/O
simultaneously, the time difference between signals has to
be 3 ms or less. If the time difference is longer than 3 ms, it is
recognized as another signal and starts the operation. For
example, when IN0 and IN1 are commanded to turn ON
(position number 3) simultaneously and the time difference
between them is large, only the first command is recognized
(Only IN0 input is recognized in the following example).
(a)
(j)
(g)
(i)
If the time difference is large, only IN0 input
is recognized.
ON
OFF
Time
IN0
IN1
ON
OFF
