IAI PCON-CB series User Manual

4. Operation
4.2 Operation in Positioner Mode
4-84
ME0342-4B
(2) Use of start signal ST*
■ Control method
If start signal ST* is turned OFF during movement, the actuator can be paused.
Use the control method for interlock in case where an object is invaded into the moving direction
of the actuator being moved.
1) If the ST* signal is turned OFF during movement, the actuator is paused. The deceleration is
the value set in the position table.
2) Turning the ST* signal OFF causes the positioning to be interrupted and deemed complete
signal PEND to be turned ON.
3) If the ST* signal is turned ON again, the remaining movement is continued. The acceleration
is the value set in the position table.
Before operation
Positioning
complete state
Operation
Temp.
stop
Cont.
Op.
Position
complete
Start signal
ST*
(PLC→Controller)
PEND
(Controller→PLC)
Operation of actuator
PEND
turned ON
PE* not
turned ON
Current Position No.
PE*
(Controller→PLC)
Turning RES ON here allows continuous
operation to be cancelled
4.2 Operation in Positioner Mode
ME0342-4B 4-85
4.2.7 Direct Position Specification (PIO Pattern 5)
The start signal is provided for every position number. Only turning ON the relevant input signal
according to the table shown below allows the operation based on the data in the target position
number to be performed. The operation mode is called the solenoid valve mode because
solenoid valves can directly drive air cylinders.
Also, in the positioning width set in each position, LS* Signal should turn ON once the actuator
gets in the range of the setting values just like it does in detection with a sensor in operation to
any position number or even when the servo gets turned OFF and the actuator is moved
manually by hand.
Positioning and speed change during operation are possible. Their control methods are the
same as those of other patterns.
Caution
● This pattern does not allow pressing and pitch feed.
[1] Home Return (ST0, HEND)
The I/O of PIO varies as shown in the table below depending on the position number before
home return.
Position No.
Input
Output
0
ST0
(Note 1)
LS0
1
ST1
⇒
JOG+
LS1
⇒
TRQS
2
ST2 ⇒ Invalid
LS2 ⇒ Invalid
For incremental type and for absolute type with the home-return operation incomplete, the
actuator should conduct the home-return operation when ST0 gets turned ON while the home-
return operation is incomplete (HEND = OFF). Once the home-return operation completes, the
home-return complete signal HEND should turn ON. Turn OFF ST0 Signal once HEND Signal
turns ON. The home-return complete signal HEND is kept ON once it turns ON even if the
actuator gets off the home position unless the home position is lost.
(Note 2)
Before home return, start signal ST1 works as JOG+. By using this function, move the actuator to
a position at which home return can be done safely. The speed of JOG+ is the home return
speed. (TRQS should be output when the actuator hits an obstacle or the stroke end and become
unable to move and the current of the motor exceeds the home-return current limit value.)
For incremental type, after the home-return operation is complete, the actuator conducts
positioning to Position No. 0 when ST0 = ON. Refer to [4.2.7 [3] Positioning.]
If a certain home positioning is required, Set “Position” of position No.0 to 0 mm and the ST0
signal is not changed by the HEND signal to remain ON.
Home return signal
ST0
(PLC → Controller)
If accuracy is required, set 0mm at “point” of
Position No. 0 and set to keep ST0 =
ON when
HEND Signal turns on, not the get ST0 = OFF.
Homing Completion Signal
HEND
(Controller
→
PLC)

IAI PCON-CB series Specifications

General

Brand	IAI
Model	PCON-CB series
Category	Controller
Language	English