This Operation Manual explains the handling methods, structure and maintenance of this product, among others, providing the
information you need to know to use the product safely.
Before using the product, be sure to read this manual and fully understand the contents explained herein to ensure safe use of
the product.
The CD or DVD that comes with the product contains operation manuals for IAI products.
When using the product, refer to the necessary portions of the applicable operation manual by printing them out or displaying
them on a PC.
After reading the Operation Manual, keep it in a convenient place so that whoever is handling this product can reference it
quickly when necessary.
[Important]
• This Operation Manual is original.
• The product cannot be operated in any way unless expressly specified in this Operation Manual. IAI shall assume
no responsibility for the outcome of any operation not specified herein.
• Information contained in this Operation Manual is subject to change without notice for the purpose of product
improvement.
• If you have any question or comment regarding the content of this manual, please contact the IAI sales office near
you.
• Using or copying all or part of this Operation Manual without permission is prohibited.
• The company names, names of products and trademarks of each company shown in the sentences are registered
trademarks.
CAUTION
1. Use Environment
PCON controllers can be used in an environment corresponding to pollution degree 2 or equivalent.
2. PC Software and Teaching Pendant Models
New functions have been added to the entire PCON controller series.
To support these new features, the communication protocol has been changed to the general Modbus
(Modbus-compliant) mode. As a result, the existing PC software programs and teaching pendants compatible
with RCP2 controllers can no longer be used.
If you are using this controller, use a compatible PC software program and/or teaching pendant selected from the
following models.
skrameRledoM
PC software (with RS232C
communication cable)
PC software (with USB communication
cable)
Teaching pendantRCM-T
Simple teaching pendantRCM-E
Data setting unitRCM-P
RCM-101-MW
RCM-101-USB
All are compatible with existing RCP2
controllers.
3. Recommendation for Backing Up Latest Data
This product uses nonvolatile memory to store the position table and parameters. Normally the memory will retain
the stored data even after the power is disconnected. However, the data may be lost if the nonvolatile memory
becomes faulty.
We strongly recommend that the latest position table and parameter data be backed up so that the data can be
restored quickly when the controller must be replaced for a given reason.
The data can be backed up using the following methods:
[1] Save to a CD or FD from the PC software.
[2] Create a position table sheet or parameter sheet and keep a written record of backup.
CAUTION
4. Using Rotary Actuators in Multi-rotation Specification
Rotary actuators of multi-rotation specification models can be set to operate in the multi-rotation mode or
limited-rotation mode using a parameter.
4.1Note
Pay attention to the PIO pattern parameter setting for the following controllers.
Each controller does not support relative coordinate specification in the PIO pattern specified below:
1.2Differences from Air Cylinders in Control Functions.....................................................................................10
1.3How to Read Model Name ........................................................................................................................... 12
3.3Noise Elimination Measures and Grounding ................................................................................................ 22
3.4Heat Radiation and Installation ....................................................................................................................23
3.6Wiring the Power Supply..............................................................................................................................25
3.7Wiring the Brake Forced-release Switch......................................................................................................25
3.8Wiring the Emergency Stop Circuit ..............................................................................................................26
3.8.1 Cutting Off the Drive Signal (Standard) ............................................................................................26
3.8.2 Cutting Off the Motor Drive Power .................................................................................................... 28
3.9Connecting the Actuator...............................................................................................................................29
3.9.1 Motor Relay Cable ............................................................................................................................ 29
3.10Connecting the I/O Flat Cable......................................................................................................................31
3.11Connecting the Communication Cable.........................................................................................................32
4.1Details of the Position Table ........................................................................................................................33
4.2Notes on the ROBO Gripper ........................................................................................................................38
5.Operation Using I/O Signals ..........................................................................................................40
z Meaning of Position Detection Output Signals (LS0, LS1, LS2)..................................................52
z Notes on Setting the Positioning Band........................................................................................52
z Speed Change during Movement................................................................................................53
z Pausing during Movement...........................................................................................................54
z Forced Return in Case of Emergency .........................................................................................54
5.3Standard Type .............................................................................................................................................55
5.3.1 Explanation of I/O Signals.................................................................................................................55
5.3.2 Timings after Power On .................................................................................................................... 57
z Steps from Initial Startup to Actuator Adjustment........................................................................57
z Normal Operating Procedure ......................................................................................................58
5.3.3 Position Table and Parameter Settings Required for Operation .......................................................60
Test Operation ............................................................................................................................60
Safety speed during manual feed .....................................................................................................60
Speed override for move commands from the PLC .......................................................................... 60
5.3.8 Examples of Tact Time Reduction Combining Zone Outputs and 3 Stop Points ..............................76
5.4Power-saving Modes at Standby Positions .................................................................................................. 78
5.5Using Rotary Actuators in Multi-rotation Specification..................................................................................81
5.5.1 How to Use .......................................................................................................................................81
List of Specifications of Connectable Actuators ....................................................................................................110
Correlation diagram of speed and load capacity for the slider type (motor-straight type) ...................................122
Correlation diagram of speed and load capacity for the slider type (motor-reversing type) ................................123
Correlation diagram of speed and load capacity for the standard rod type ...........................................................124
Correlation diagram of speed and load capacity for the single-guide type ............................................................125
Correlation diagram of speed and load capacity for the double-guide type...........................................................126
Correlation diagram of speed and load capacity for the dustproof/splash-proof type ............................................127
Correlation diagram of speed and load capacity for the RCP3 slider type ............................................................128
Correlation diagram of speed and load capacity for the RCP3 table type .............................................................129
Push Force and Current-limiting Value..................................................................................................................130
Position Table Record ........................................................................................................................................... 137
Parameter
Change History
Record .................................................................................................................................................138
“Safety Guide” has been written to use the machine safely and so prevent personal injury or property
damage beforehand. Make sure to read it before the operation of this product.
Safety Precautions for Our Products
The common safety precautions for the use of any of our robots in each operation.
No.
1Model
Operation
Description
Selection
Description
This product has not been planned and designed for the application where
high level of safety is required, so the guarantee of the protection of
human life is impossible. Accordingly, do not use it in any of the following
applications.
1) Medical equipment used to maintain, control or otherwise affect human
life or physical health.
2) Mechanisms and machinery designed for the purpose of moving or
transporting people (For vehicle, railway facility or air navigation facility)
3) Important safety parts of machinery (Safety device, etc.)
Do not use the product outside the specifications. Failure to do so may
considerably shorten the life of the product.
Do not use it in any of the following environments.
1) Location where there is any inflammable gas, inflammable object or
explosive
2) Place with potential exposure to radiation
3) Location with the ambient temperature or relative humidity exceeding
the specification range
4) Location where radiant heat is added from direct sunlight or other large
heat source
5) Location where condensation occurs due to abrupt temperature
changes
6) Location where there is any corrosive gas (sulfuric acid or hydrochloric
acid)
7) Location exposed to significant amount of dust, salt or iron powder
8) Location subject to direct vibration or impact
For an actuator used in vertical orientation, select a model which is
equipped with a brake. If selecting a model with no brake, the moving part
may drop when the power is turned OFF and may cause an accident such
as an injury or damage on the work piece.
1
No.
Operation
Description
Description
2Transportation When carrying a heavy object, do the work with two or more persons or
utilize equipment such as crane.
When the work is carried out with 2 or more persons, make it clear who is
to be the leader and who to be the follower(s) and communicate well with
each other to ensure the safety of the workers.
When in transportation, consider well about the positions to hold, weight
and weight balance and pay special attention to the carried object so it
would not get hit or dropped.
Transport it using an appropriate transportation measure.
The actuators available for transportation with a crane have eyebolts
attached or there are tapped holes to attach bolts. Follow the instructions
in the operation manual for each model.
Do not step or sit on the package.
Do not put any heavy thing that can deform the package, on it.
When using a crane capable of 1t or more of weight, have an operator
who has qualifications for crane operation and sling work.
When using a crane or equivalent equipments, make sure not to hang a
load that weighs more than the equipment’s capability limit.
Use a hook that is suitable for the load. Consider the safety factor of the
hook in such factors as shear strength.
Do not get on the load that is hung on a crane.
Do not leave a load hung up with a crane.
Do not stand under the load that is hung up with a crane.
3Storage and
Preservation
The storage and preservation environment conforms to the installation
environment. However, especially give consideration to the prevention of
condensation.
Store the products with a consideration not to fall them over or drop due to
an act of God such as earthquake.
4Installation
and Start
(1) Installation of Robot Main Body and Controller, etc.
Make sure to securely hold and fix the product (including the work part). A
fall, drop or abnormal motion of the product may cause a damage or injury.
Also, be equipped for a fall-over or drop due to an act of God such as
earthquake.
Do not get on or put anything on the product. Failure to do so may cause
an accidental fall, injury or damage to the product due to a drop of
anything, malfunction of the product, performance degradation, or
shortening of its life.
When using the product in any of the places specified below, provide a
sufficient shield.
1) Location where electric noise is generated
2) Location where high electrical or magnetic field is present
3) Location with the mains or power lines passing nearby
4) Location where the product may come in contact with water, oil or
chemical droplets
2
No.
Operation
Description
4Installation
and Start
Description
(2) Cable Wiring
Use our company’s genuine cables for connecting between the actuator
and controller, and for the teaching tool.
Do not scratch on the cable. Do not bend it forcibly. Do not pull it. Do not
coil it around. Do not insert it. Do not put any heavy thing on it. Failure to
do so may cause a fire, electric shock or malfunction due to leakage or
continuity error.
Perform the wiring for the product, after turning OFF the power to the unit,
so that there is no wiring error.
When the direct current power (+24V) is connected, take the great care of
the directions of positive and negative poles. If the connection direction is
not correct, it might cause a fire, product breakdown or malfunction.
Connect the cable connector securely so that there is no disconnection or
looseness. Failure to do so may cause a fire, electric shock or malfunction
of the product.
Never cut and/or reconnect the cables supplied with the product for the
purpose of extending or shortening the cable length. Failure to do so may
cause the product to malfunction or cause fire.
(3) Grounding
The grounding operation should be performed to prevent an electric shock
or electrostatic charge, enhance the noise-resistance ability and control
the unnecessary electromagnetic radiation.
For the ground terminal on the AC power cable of the controller and the
grounding plate in the control panel, make sure to use a twisted pair cable
with wire thickness 0.5mm
2
(AWG20 or equivalent) or more for grounding
work. For security grounding, it is necessary to select an appropriate wire
thickness suitable for the load. Perform wiring that satisfies the
specifications (electrical equipment technical standards).
Perform Class D Grounding (former Class 3 Grounding with ground
resistance 100 or below).
3
No.
4Installation
Operation
Description
and Start
Description
(4) Safety Measures
When the work is carried out with 2 or more persons, make it clear who is
to be the leader and who to be the follower(s) and communicate well with
each other to ensure the safety of the workers.
When the product is under operation or in the ready mode, take the safety
measures (such as the installation of safety and protection fence) so that
nobody can enter the area within the robot’s movable range. When the
robot under operation is touched, it may result in death or serious injury.
Make sure to install the emergency stop circuit so that the unit can be
stopped immediately in an emergency during the unit operation.
Take the safety measure not to start up the unit only with the power turning
ON. Failure to do so may start up the machine suddenly and cause an
injury or damage to the product.
Take the safety measure not to start up the machine only with the
emergency stop cancellation or recovery after the power failure. Failure to
do so may result in an electric shock or injury due to unexpected power
input.
When the installation or adjustment operation is to be performed, give
clear warnings such as “Under Operation; Do not turn ON the power!” etc.
Sudden power input may cause an electric shock or injury.
Take the measure so that the work part is not dropped in power failure or
emergency stop.
Wear protection gloves, goggle or safety shoes, as necessary, to secure
safety.
Do not insert a finger or object in the openings in the product. Failure to do
so may cause an injury, electric shock, damage to the product or fire.
When releasing the brake on a vertically oriented actuator, exercise
precaution not to pinch your hand or damage the work parts with the
actuator dropped by gravity.
5Teaching When the work is carried out with 2 or more persons, make it clear who is
to be the leader and who to be the follower(s) and communicate well with
each other to ensure the safety of the workers.
Perform the teaching operation from outside the safety protection fence, if
possible. In the case that the operation is to be performed unavoidably
inside the safety protection fence, prepare the “Stipulations for the
Operation” and make sure that all the workers acknowledge and
understand them well.
When the operation is to be performed inside the safety protection fence,
the worker should have an emergency stop switch at hand with him so that
the unit can be stopped any time in an emergency.
When the operation is to be performed inside the safety protection fence,
in addition to the workers, arrange a watchman so that the machine can
be stopped any time in an emergency. Also, keep watch on the operation
so that any third person can not operate the switches carelessly.
Place a sign “Under Operation” at the position easy to see.
When releasing the brake on a vertically oriented actuator, exercise
precaution not to pinch your hand or damage the work parts with the
actuator dropped by gravity.
* Safety protection Fence : In the case that there is no safety protection
fence, the movable range should be indicated.
4
No.
Operation
Description
Description
6Trial Operation When the work is carried out with 2 or more persons, make it clear who is
to be the leader and who to be the follower(s) and communicate well with
each other to ensure the safety of the workers.
After the teaching or programming operation, perform the check operation
one step by one step and then shift to the automatic operation.
When the check operation is to be performed inside the safety protection
fence, perform the check operation using the previously specified work
procedure like the teaching operation.
Make sure to perform the programmed operation check at the safety
speed. Failure to do so may result in an accident due to unexpected
motion caused by a program error, etc.
Do not touch the terminal block or any of the various setting switches in
the power ON mode. Failure to do so may result in an electric shock or
malfunction.
7Automatic
Operation
Check before starting the automatic operation or rebooting after operation
stop that there is nobody in the safety protection fence.
Before starting automatic operation, make sure that all peripheral
equipment is in an automatic-operation-ready state and there is no alarm
indication.
Make sure to operate automatic operation start from outside of the safety
protection fence.
In the case that there is any abnormal heating, smoke, offensive smell, or
abnormal noise in the product, immediately stop the machine and turn
OFF the power switch. Failure to do so may result in a fire or damage to
the product.
When a power failure occurs, turn OFF the power switch. Failure to do so
may cause an injury or damage to the product, due to a sudden motion of
the product in the recovery operation from the power failure.
5
No.
8Maintenance
Operation
Description
and Inspection
Description
When the work is carried out with 2 or more persons, make it clear who is
to be the leader and who to be the follower(s) and communicate well with
each other to ensure the safety of the workers.
Perform the work out of the safety protection fence, if possible. In the case
that the operation is to be performed unavoidably inside the safety
protection fence, prepare the “Stipulations for the Operation” and make
sure that all the workers acknowledge and understand them well.
When the work is to be performed inside the safety protection fence,
basically turn OFF the power switch.
When the operation is to be performed inside the safety protection fence,
the worker should have an emergency stop switch at hand with him so that
the unit can be stopped any time in an emergency.
When the operation is to be performed inside the safety protection fence,
in addition to the workers, arrange a watchman so that the machine can
be stopped any time in an emergency. Also, keep watch on the operation
so that any third person can not operate the switches carelessly.
Place a sign “Under Operation” at the position easy to see.
For the grease for the guide or ball screw, use appropriate grease
according to the Operation Manual for each model.
Do not perform the dielectric strength test. Failure to do so may result in a
damage to the product.
When releasing the brake on a vertically oriented actuator, exercise
precaution not to pinch your hand or damage the work parts with the
actuator dropped by gravity.
The slider or rod may get misaligned OFF the stop position if the servo is
turned OFF. Be careful not to get injured or damaged due to an
unnecessary operation.
Pay attention not to lose the cover or untightened screws, and make sure
to put the product back to the original condition after maintenance and
inspection works.
Use in incomplete condition may cause damage to the product or an injury.
* Safety protection Fence : In the case that there is no safety protection
fence, the movable range should be indicated.
9Modification
and Dismantle
Do not modify, disassemble, assemble or use of maintenance parts not
specified based at your own discretion.
10Disposal When the product becomes no longer usable or necessary, dispose of it
properly as an industrial waste.
When removing the actuator for disposal, pay attention to drop of
components when detaching screws.
Do not put the product in a fire when disposing of it.
The product may burst or generate toxic gases.
11Other Do not come close to the product or the harnesses if you are a person
who requires a support of medical devices such as a pacemaker. Doing so
may affect the performance of your medical device.
See Overseas Specifications Compliance Manual to check whether
complies if necessary.
For the handling of actuators and controllers, follow the dedicated
operation manual of each unit to ensure the safety.
6
Alert Indication
The safety precautions are divided into “Danger”, “Warning”, “Caution” and “Notice” according to the
warning level, as follows, and described in the Operation Manual for each model.
LevelDegree of Danger and DamageSymbol
Danger
Warning
Caution
Notice
This indicates an imminently hazardous situation which, if the
product is not handled correctly, will result in death or serious injury.
This indicates a potentially hazardous situation which, if the product
is not handled correctly, could result in death or serious injury.
This indicates a potentially hazardous situation which, if the product
is not handled correctly, may result in minor injury or property
damage.
This indicates lower possibility for the injury, but should be kept to
use this product properly.
Danger
Warning
Caution
Notice
7
8
1. Overview
1.1 Introduction
As a dedicated controller for our RCP2 and RCP3 actuators, this controller becomes smaller and more affordable and
incorporates a new set of features to offer greater convenience and safety, while maintaining the functions of the RCP2
controller.
This controller also provides power-saving functions to address the growing need for saving energy.
The key features and functions of this controller are summarized below.
z Limited I/O positioning points (3 points)
The I/O signals are designed to function in the same manner as those of air cylinders. Two operation types are supported.
The movement complete signals have different meanings in each type.
• Proximity switch type --- Each movement complete signal works as an auto switch. Even when positioning operation is
not performed, a movement complete signal is output once the specified position is passed.
• Standard type --- A movement complete signal is output only when positioning operation has completed following
a move command.
* The controller is configured to support the proximity switch type before shipment.
z Separate zone output limits for each of 3 positions (rear end, intermediate point, front end)
Before, the zone output limits were set by parameters and thus fixed to a certain width for all positions. To increase
flexibility, setting fields have been added to the position table to allow different limits to be set for each position.
This function is useful in preventing contact with peripheral equipment or reducing the tact time.
z Independent acceleration and deceleration settings
The position table now has separate fields for acceleration and deceleration.
The purpose of this change is to prevent works made of certain materials or having certain shapes from receiving impact or
vibration when the actuator decelerates to a stop.
By reducing the deceleration setting, a more gradual deceleration curve can be achieved.
z Limitation of feed speed during adjustment by test operation
The feed speed during adjustment by test operation can be limited to ensure safety.
z Power-saving measures
In general, pulse motors consume more holding current in standstill state than AC servo motors. Accordingly, this controller
provides power-saving means by assuming situations where the motor is used in applications requiring a long standby
time.
1. Overview
When actually starting your system or if you have encountered any problem, also refer to the manuals for the actuator,
teaching pendant, PC software and/or any other component you are using, in addition to this manual.
This manual does not cover all possible deviations from normal operations or unexpected phenomena such as complex
signal changes resulting from critical timings.
Therefore, the reader should assume that items not described in this manual are “not permitted,” as a rule.
* This manual has been prepared with the utmost attention to ensure accuracy and completeness. However, there may still
be inaccuracies and omissions. Should you find any inaccurate description or if you have any comment, please contact
IAI.
Keep this manual in a convenient place so that you can easily reference it whenever necessary.
9
1.2 Differences from Air Cylinders in Control Functions
For those of you who have been using air cylinders and have never used motorized cylinders before, this section gives a brief
explanation of how this controller is different from air cylinders.
Read the following information and implement controls appropriate for your system.
1. Overview
Drive method Air pressure by solenoid valve control. Ball screw or timing belt drive using a pulse motor.
Target position setting Mechanical stopper (including shock
Target position
detection
Speed setting Adjustment by a speed controller. Entry of a feed speed in the “Speed” field of the position
Acceleration/
deceleration setting
Item Air cylinder PCON
Entry of a coordinate value in the “Position” field of the
absorber).
Installation of a reed switch or other
external detection sensor.
In accordance with the load, air supply
volume, and speed controller/solenoid
valve performance.
position table.
A value can be entered by keying in a number from a
PC/teaching pendant, or by moving the actuator to a
desired position and then reading the achieved position
directly.
Example) Example of entry of “400 mm” stroke
Position No. Position
05 (mm), rear end
1400 (mm), front end
2 200 (mm), intermediate point
Judgment based on internal coordinates determined by
the position information received from the position
detector (encoder).
No external detection sensor is required.
table (unit: mm/sec).
Note that the rated speed is set automatically as the
default feed speed.
Entry in the “Acceleration” and “Deceleration” fields of the
position table (minimum setting unit: 0.01 G).
Reference: 1 G = Gravitational acceleration
Note that the rated acceleration and deceleration are set
automatically as the default acceleration and
deceleration.
Desired values can be set in fine steps to achieve gradual
acceleration/deceleration curves.
10
Acceleration
Start position
of movement
The greater the set value, the steeper the curve
becomes. On the other hand, the smaller the set value,
the more gradual the curve becomes.
Deceleration
End
position
Item Air cylinder PCON
r
Position check upon
power on
Judgment using a reed switch or other
external detection sensor.
When the power is turned on, mechanical coordinates are
not stored in the controller and thus the current position is
not yet determined.
For this reason, a rear end move command must be
executed after the power has been turned on, in order to
establish coordinates.
The actuator performs homing first, and then moves to
the rear end.
[1]
[2]
[3]
-on position
Powe
Rear end
Home position
[1] The actuator moves toward the mechanical end on
the motor side at the homing speed.
[2] The actuator contacts the mechanical end, reverses
its direction, and stops temporarily at the home
position.
[3] The actuator moves to the rear end at the speed set
in the “Speed” field of the position table.
(Note) Make sure there is no obstacle along the homing
Specifiation for connecting the
simple absolute unit
<Power-supply voltage>
0: 24 VDC
<I/O flat cable length>
0: No cable
2: 2 m
3: 3 m
5: 5 m
<I/O signal type>
NPxxNPN [Sink]
PNxxPNP [Source]
12
1.4 System Configuration
This controller performs positioning to 3 points (rear end, intermediate point, front end) via a PLC and I/O signals.
Standard teaching
pendant
Host system <PLC>
PCON-CY controller
Flat cable
<supplied with
the controller>
* If a PLC will not be used,
Cable length: 2 m
disable the servo-on
input by the applicable
parameter.
24-VDC I/O
power supply
1. Overview
RS232C type
USB type
PC software
(optional)
PC
Input power
supply
24 VDC
Brake forced-release
switch
External EMG switch
RCP2 actuator
Power-supply
terminal block
Caution: If the actuator is not equipped with a brake, the BK terminal need not be connected.
13
1.5 Steps from Unpacking to Adjustment by Trial Operation
If you are using this controller for the first time, refer to the steps explained below and perform the specified tasks carefully by
making sure you check all necessary items and connect all required cables.
1.
1. Overview
Should you find any of the following items missing or of a wrong model type, please contact your IAI sales agent.
z Controller z Actuator z I/O flat cable z Motor cycle z Encoder cable
PCON-CY CB-PACY-PIO *** CB-RCP2-MA *** CB-RCP2-PA ***
z Operation manual
<Options>
z Teaching pendant z PC software RCM-T (standard) RS232C type <RCM-101-MW>
RCM-E (simple) USB type <RCM-101-USB>
RCM-P (data setting) (Each software program comes with a cable.)
2.
[1] Affix the actuator and install the robot hand → Refer to the operation manual for your actuator.
[2] Install the controller → Chapter 3, “Installation and Wiring”
3.
• Wire the 24-V power supply.
• Wire the brake forced-release switch (if the actuator is equipped with a brake).
• Connect the grounding wire to ground.
• Wire the emergency stop circuit and motor drive power supply.
• Connect the motor cable and encoder cable.
• Connect the I/O flat cable.
Checking the items in the package
Installation
Wiring/connection
4.
Confirm first that the emergency stop circuit is not actuated, and then supply the 24-V power.
If the monitor LED [SV/ALM] on the front face of the controller illuminates in orange for 2 seconds and then turns off, the
controller is normal.
If the [SV/ALM] illuminates in red, it means that an alarm is present.
In this case, connect a PC or teaching pendant and check the nature of the alarm, and remove the cause by referring to
Chapter 7, “Troubleshooting.”
5.
Set the MANU operation mode to [Teaching mode 1: Enable safety speed / Inhibit PIO] on the PC or teaching pendant.
In this condition, set appropriate values in parameter No. 25 (PIO pattern selection) and parameter No. 35 (Safety speed).
* The factory settings of PIC pattern and safety speed are “Standard type” and “100 mm/s or less,” respectively.
Turning on the power and checking for alarms
Setting a PIO pattern/safety speed
→ Chapter 6, “Parameter Settings”
14
Operating when the servo is ON
6.
Confirm that the slider or rod is not contacting a mechanical end.
If the slider or rod is contacting a mechanical end, move it away from the mechanical end.
If the actuator is equipped with a brake, move the actuator after turning ON the forced brake release switch to forcibly release
the brake.
At this time, be careful not to get your hand pinched or the robot hand damaged by the actuator dropping suddenly due to its
dead weight.
Turn ON the servo using the PC or teaching pendant.
If the actuator enters a servo lock state and the monitor LED [SV/ALM] on the front face of the controller illuminates in green,
the controller is normal.
1. Overview
7.
Confirm that the emergency cutoff circuit (or motor drive-power cutoff circuit) operates normally.
8.
Use the teaching pendant or PC to set a target position in the “Position” field of the position table (rear end, front end,
intermediate point).
* If any movement operation is started without setting a target position first, the message “No movement data” will be
displayed. Determine an appropriate target position by fine-tuning the work or robot hand.
* Once a target position is set, other items (speed, acceleration/deceleration, positioning band, etc.) will be set to their defaults
Input a move command from the PLC to perform positioning.
If necessary, perform the following fine adjustments:
• Depending on the weight, material and/or shape of the work, vibration or noise may occur. If you notice undesirable vibration
or noise, lower the speed, acceleration and/or deceleration.
• You may also want to adjust the zone output signal limits and positioning band to prevent contact with peripheral equipment
or reduce the tact time.
• If push-motion operation will be performed, select optimal current-limiting value, push-motion completion judgment time and
push speed.
One of the following periods, whichever is shorter:
Elapse of 18 months after the shipment from IAI
Elapse of 12 months after the delivery to the specified location
1. Overview
1.6.2 Scope of Warranty
Our products are covered by warranty when all of the following conditions are met. Faulty products covered by warranty
will be replaced or repaired free of charge:
(1) The breakdown or problem in question pertains to our product as delivered by us or our authorized dealer.
(2) The breakdown or problem in question occurred during the warranty period.
(3) The breakdown or problem in question occurred while the product was in use for an appropriate purpose under the
(4) The breakdown or problem in question was caused by a specification defect or problem, or by the poor quality of
Note that breakdowns due to any of the following reasons are excluded from the scope of warranty:
conditions and environment of use specified in the operation manual and catalog.
our product.
[1] Anything other than our product
[2] Modification or repair performed by a party other than us (unless we have approved such modification or repair)
[3] Anything that could not be easily predicted with the level of science and technology available at the time of shipment
from our company
[4] A natural disaster, man-made disaster, incident or accident for which we are not liable
[5] Natural fading of paint or other symptoms of aging
[6] Wear, depletion or other expected result of use
[7] Operation noise, vibration or other subjective sensation not affecting function or maintenance
Note that the warranty only covers our product as delivered and that any secondary loss arising from a breakdown of our
product is excluded from the scope of warranty.
1.6.3 Honoring the Warranty
As a rule, the product must be brought to us for repair under warranty.
1.6.4 Limited Liability
[1] We shall assume no liability for any special damage, consequential loss or passive loss such as a loss of expected
profit arising from or in connection with our product.
[2] We shall not be liable for any program or control method created by the customer to operate our product or for the result
of such program or control method.
16
1.6.5 Conditions of Conformance with Applicable Standards/Regulations, Etc., and Applications
(1) If our product is combined with another product or any system, device, etc., used by the customer, the customer must
first check the applicable standards, regulations and/or rules. The customer is also responsible for confirming that such
combination with our product conforms to the applicable standards, etc. In such a case we will not be liable for the
conformance of our product with the applicable standards, etc.
(2) Our product is for general industrial use. It is not intended or designed for the applications specified below, which
require a high level of safety. Accordingly, as a rule our product cannot be used in these applications. Contact us if you
must use our product for any of these applications:
[1] Medical equipment pertaining to maintenance or management of human life or health
[2] A mechanism or mechanical equipment intended to move or transport people (such as a vehicle, railway facility
or aviation facility)
[3] Important safety parts of mechanical equipment (such as safety devices)
[4] Equipment used to handle cultural assets, art or other irreplaceable items
(3) Contact us at the earliest opportunity if our product is to be used in any condition or environment that differs from
what is specified in the catalog or operation manual.
1.6.6 Other Items Excluded from Warranty
The price of the product delivered to you does not include expenses associated with programming, the dispatch of
engineers, etc. Accordingly, a separate fee will be charged in the following cases even during the warranty period:
[1] Guidance for installation/adjustment and witnessing of test operation
[2] Maintenance and inspection
[3] Technical guidance and education on operating/wiring methods, etc.
[4] Technical guidance and education on programming and other items related to programs
1. Overview
17
2.Specifications
2.1Basic Specifications
Number of controlled axes1 axis per unit
Power-supply voltage24 VDC +10%/-10%
Power-supply capacity2 A max.
Control methodField-weakening vector control (patent pending)
2. Specifications
Encoder resolution800 P/rev
Positioning command
Backup memory
PIO interface24-VDC insulation
LED indicator
Serial communicationRS485, 1 channel (conforming to the Modbus protocol)
Encoder interfaceIncremental specification conforming to EIA RS-422A/423A
Forced release of electromagnetic brake24 V is applied to the BK terminal on the power-supply terminal block.
Cable length
Dielectric strength
EnvironmentSurrounding air temperature
Protection classNatural air cooling (IP20)
Weight128 g or below
External dimensions35 (W) x 120 (H) x 68 (D) mm
Specification itemDescription
YC-NOCPledoM
Separate commands for positioning to rear end, front end and
intermediate point
Position number data and parameters are stored in the nonvolatile
memory.
Serial EEPROM life: Approx. 100,000 times of rewriting
4 input points
• Front end move command
• Rear end move command
• Intermediate point move command
• Servo-on
6 output points
• Front end movement complete
• Rear end movement complete
• Intermediate point movement complete
• Ready (or zone output under the standard type)
• Homing complete
• *Alarm
SV (green) --- Whether or not the servo is on / ALM (red) --- Whether
or not an alarm is present.
Actuator cable: 20 m or shorter
I/O flat cable: 5 m or shorter
500 VDC 10 mΩ
0to40°C
Surrounding humidity85% RH or below (non-condensing)
Surrounding environmentRefer to 3.1 Installation Environment
Storage temperature
Storage humidity90% RH or below (non-condensing)
Vibration resistance
-10 to 65°C
10 to 57 Hz in all X/Y/Z directions / Single amplitude: 0.035 mm
(continuous), 0.075 mm (intermittent)
18
2.2 Name and Function of Each Part of the Controller
Status indicator LED
PIO connector
Connects the PLC and PIO.
SIO connector
Connects the teaching
pendant/PC.
The model of the connected
actuator is indicated here.
Motor connector
Connects the motor cable.
SV (Green) --- Indicates whether or not the
servo is on.
If this LED is blinking, the
controller is in the automatic
servo-off mode.
ALM (Red) --- Indicates whether or not an
alarm is present.
The PIO pattern number is indicated
here.
If the PIO pattern is different for each
system, indicate the applicable PIO
pattern here to prevent confusion.
The I/O signal type is indicated here.
NPN --- Sink type
PNP --- Source type
Encoder connector
Connects the encoder cable.
2. Specifications
Power-supply terminal block
BK
MPI, MPO
24 V Positive side of the 24-VDC input power supply.
0 V Negative side of the 24-VDC input power supply.
EMG -
Model indication of the connected actuator type
The type, ball screw lead and stroke of the actuator are indicated. When connecting the cables, confirm that the actuator is
of the correct specifications.
Example of indication:
Connection terminal for the brake forced-release switch to be used when the actuator is equipped with a
brake. Connect the opposite side of the switch to 24 V.
Contacts for cutting off the motor drive power to achieve a safety level of safety category 1.
MPI and MPO connect to the input side and output side of the motor power supply, respectively.
(If these contacts are not used, connect them using a jumper cable. The controller is shipped with MPI and
MPO connected by a jumper cable.)
Connection terminal for the emergency stop circuit (for cutting of motor drive signals).
A common ground is used, so connect the opposite side of the emergency stop switch (or contacts) to the
positive side of the 24-VDC input power supply.
The actuator type is RA4C.
The ball screw lead is 5 mm.
The stroke is 200 mm.
19
2.3 External Dimensions
An external view and dimensions of this product are shown below.
2. Specifications
∅5
20
3.Installation and Wiring
Pay due attention to the environment where the controller is installed.
3.1Installation Environment
This product is capable for use in the environment of pollution degree 2*1 or equivalent.
*1 Pollution Degree 2 : Environment that may cause non-conductive pollution or transient conductive pollution by frost
(IEC60664-1)
[1] Installation Environment
Do not use this product in the following environment.
• Location where the surrounding air temperature exceeds the range of 0 to 40°C
• Location where condensation occurs due to abrupt temperature changes
• Location where relative humidity exceeds 85%RH
• Location exposed to corrosive gases or combustible gases
• Location exposed to significant amount of dust, salt or iron powder
• Location subject to direct vibration or impact
• Location exposed to direct sunlight
• Location where the product may come in contact with water, oil or chemical droplets
• Environment that blocks the air vent [Refer to 3.3 Noise Elimination Measures and Grounding]
When using the product in any of the locations specified below, provide a sufficient shield.
• Location subject to electrostatic noise
• Location where high electrical or magnetic field is present
• Location with the mains or power lines passing nearby
[2] Storage and Preservation Environment
• Storage and preservation environment follows the installation environment. Especially, when the product is to be left
for a long time, pay special attention to condensed water.
Unless specially specified, moisture absorbency protection is not included in the package when the machine is
delivered. In the case that the machine is to be stored in an environment where dew condensation is anticipated, take
the condensation preventive measures from outside of the entire package, or directly after opening the package.
3. Installation and Wiring
3.2Supplied Voltage
The controller takes a supplied voltage of 24 VDC ± 10%.
(Maximum power-supply current: 2 A)
21
3.3Noise Elimination Measures and Grounding
The following explains the noise elimination measures that should be taken when using this controller.
(1) Wiring and power connection
[1] Provide dedicated class-D grounding using a grounding wire with a size of 2.0 to 5.5 mm2or larger.
3. Installation and Wiring
Other
Controller
Connect a cable of
the largest possible
size over the shortest
possible distance
Metal
enclosure
[2] Cautions on wiring method
Use a twisted cable to connect the 24-VDC external power supply.
Separate the controller wiring from high-power lines of motive power circuits, etc. (Do not tie them together or place in the
same cable duct.)
If you want to extend the motor or encoder cable beyond the length of the supplied cable, contact IAI.
equip-
ment
Controller
Other
equip-
ment
.nrettapsihtdiovAdooGgnidnuorgD-ssalC
(2) Noise sources and elimination
Noise generates from many sources, but the most common sources of noise you should consider when designing a system
are solenoid valves, magnet switches and relays. Noise generation from these components can be prevented by the method
explained below.
AC solenoid valves, magnet switches, relays
Method --- Install a surge absorber in parallel with the coil
Point
Connect to each coil over the shortest possible wiring distance.
When a surge absorber is installed on the terminal block, etc., its noise
elimination effect will decrease if the distance from the coil is long.
22
3.4 Heat Radiation and Installation
Design the control panel size, controller layout and cooling method so that the temperatures around the controller will
always be kept to 40°C or below.
Mount the controller vertically on the wall, as shown below. Since cooling is provided by means of natural convection, follow
this orientation and provide a minimum clearance of 50 mm above and below the controller to allow sufficient airflows to
circulate.
If you are installing multiple controllers side by side, provide a fan on top of the controllers to agitate the airflows as an
effective way to keep the surrounding air temperatures constant.
Provide a minimum clearance of 80 mm between the front face of the controller and the wall (cover).
3. Installation and Wiring
Fan
Regardless of whether you are installing one or more controllers, provide sufficient clearances around each controller to
permit easy access for installation and removal of the controller.
At least 50 mm
At least 50 mm
At least 80 mm
Airflow
23
3. Installation and Wiring
3.5 External Connection Diagram
An example of standard wiring is shown below.
(Note) The PIO signal names are those based on the proximity switch type.
The color of the encoder relay cable is different for the robot cable specification. Refer to 3.9.2, “Encoder Relay
Input power
supply
24 VDC
Cable.”
For teaching pendant/PC
connection
Brake release
switch
External EMG
switch
PCON-CY controller
Terminal block
24-VDC power
supply for I/O signals
Brown 1
Red 1
Orange 1
Yellow 1
Green 1
Blue 1
Purple 1
Gray 1
White 1
Black 1
Brown 2
Red 2
Flat cable
Motor relay cable
Orange
Gray
White
Yellow
Pink
Yellow (Green)
0 V (NPN specification)
24 V (PNP specification)
Load
Load
Load
Load
Load
Load
0 V (NPN specification)
24 V (PNP specification)
Actuator
Motor
24
Tighten together with a mounting screw.
Encoder relay cable
Yellow
Orange
(black 2)
Orange
(red 2)
Yellow
(black 1)
Yellow
(red 1)
White
(black 1)
White
(red 1)
Light blue
(black 1)
Light blue
(red 1)
Encoder
Holding brake
3.6 Wiring the Power Supply
Connect the positive side and negative side of the 24-VDC power supply to the 24-V terminal and N terminal on the
power-supply terminal block, respectively.
Push with a flat-head
screwdriver to open the cable
inlet.
Input power supply
24 VDC
(Max. 2 A per unit)
Use a wire satisfying the following specifications.
(Note) Provide proper termination to prevent shorting due to contact with wire offcut.
If the wiring path is long, provide a relay terminal block and connect the original wire to
another wire of a different size.
Input power
supply
Temperature rating of
insulation sheath
Length of bare wire
60°C or above
Power-supply
terminal block
Relay terminal block Power-supply terminal block
Cable inlet
3. Installation and Wiring
3.7 Wiring the Brake Forced-release Switch
If the actuator is equipped with a brake, provide a forced-release switch to permit a reset means during startup adjustment or
in case of emergency.
The customer must provide the switch (24 VDC, with a minimum contact capacity of 0.2 A).
Connect one side of the switch to the positive side of the 24-VDC power supply, and connect the other side to the BK terminal
on the power-supply terminal block.
The brake will be released when the switch is closed.
Input power supply
24 VDC
(Max. 2 A per unit)
Danger: If the actuator is oriented vertically, exercise due caution when releasing the brake to prevent the slider/rod
from dropping unexpectedly to pinch your hand or damage the robot hand or work.
Brake forced-release
switch
Power-supply
terminal block
25
3.8 Wiring the Emergency Stop Circuit
3.8.1 Cutting Off the Drive Signal (Standard)
Connect one side of the external EMG switch to the positive side of the 24-VDC power supply, and connect the other side to
the BK terminal.
(Note) The EMG switch on the teaching pendant works only on the controller connected to the switch.
3. Installation and Wiring
Teaching pendant
EMG switch
24-VDC input power
supply
(Max. 2 A per unit)
External EMG switch
SIO connector
Power-supply
terminal block
PCON-CY controller
Connection
detection
signal (H)
EMG signal
detection (H)
Time
constant
SIO
connector
connection
detection
circuit
Drive stop
signal (L)
Motor
drive
circuit
26
Power-supply
terminal block (2nd)
Power-supply
terminal block (3rd)
If a separate emergency stop circuit is provided to stop the entire system, or when multiple controllers are linked together and
each controller has a different power supply, connect external EMG relay contacts.
24-VDC control
power supply
24-VDC input power
supply
(Max. 2 A per unit)
External EMG
reset switch
External EMG circuit
DC 0V
3. Installation and Wiring
Relay
Power-supply
terminal block (1st)
Power-supply
terminal block (2nd)
24-VDC input power
supply
(Max. 2 A per unit)
24-VDC input power
supply
(Max. 2 A per unit)
Power-supply
terminal block (3rd)
27
3.8.2 Cutting Off the Motor Drive Power
If the motor drive power must be cut off in order to meet the required safety category of the entire system, connect external
EMG relay contacts between the MPI terminal and MPO terminal.
Also connect the 24-V controller power supply to the EMG terminal.
(Note) The EMG switch on the teaching pendant cuts off the motor driver signal. It does not cut off the motor drive power.
3. Installation and Wiring
24-VDC control
power supply
24-VDC input power
supply
(Max. 2 A per unit)
External EMG
reset switch
External EMG circuit
DC 0V
Relay
Power-supply
terminal block (1st)
For driving the motor
These lines are
shorted internally.
Power-supply
terminal block (2nd)
28
24-VDC input power
supply
(Max. 2 A per unit)
24-VDC input power
supply
(Max. 2 A per unit)
For driving the motor
These lines are
shorted internally.
Power-supply
terminal block (3rd)
For driving the motor
These lines are
shorted internally.
3.9 Connecting the Actuator
3.9.1 Motor Relay Cable
• Connect the motor relay cable to the MOT connector.
Signal table of controller-end connector (CN2)
Pin No. Signal Wire color Description
A1
A
A2VMM Gray Motor power line
A3
B
B1AYellow Motor drive line (phase +A)
B2VMM Pink Motor power line
B3B Yellow (Green) Motor drive line (phase +B)
Warning: When checking the continuity of the flat cable, exercise due caution not to bend the female pins on the
Proximity switch type Standard type
connector outward. It may cause contact failure, resulting in malfunction.
Signal name
Intermediate point move command Green-1
Front end positioning complete
output
Intermediate point positioning
complete output
Color Wiring
Flat cable
(pressure-
welded)
Gray-1
White-1
31
3.11 Connecting the Communication Cable
Connect the communication cable to the SIO connector.
RS485 conversion adapter end Controller end
Pin layout of cable-end connector
3. Installation and Wiring
Cable color
Brown
Yellow
Red
Orange
Blue
Green
Shorting wire UL1004AWG28 (Black)
Not connected to the shield.
Signal
abbreviation
Pin No.
Pin No.
Signal
abbreviation
Cable color
Yellow
Orange
Brown/Green
Black
Red/Blue
Black
Shield
32
4. Position Table Settings
To move the actuator to a specified position, basically you must enter the target position in the “Position” field of the position
table.
A target position can be specified as an absolute coordinate indicating a distance from the home (absolute mode), or as a
relative coordinate indicating a relative travel from the current position (incremental mode).
Once a target position is entered, all other fields will be automatically populated by the defaults set by the corresponding
parameters.
The defaults vary depending on the actuator characteristics.
4.1 Details of the Position Table
The position table is explained by using the PC software screen as an example.
(The display on the teaching pendant is different.)
4. Position Table Settings
Position Speed Acceleration Deceleration Push Threshold
[mm] [mm/s] [G] [G] [%] [%] [mm]
Zone + Zone – Incremental Comment
[mm] [mm]
(1) No.
(2) Position
Positioning band
Acceleration/
deceleration
mode
• Each number indicates a position data number. The respective numbers are defined as follows:
No. 0 --- Entry field for conditions to move to the rear end.
No. 1 --- Entry field for conditions to move to the front end.
No. 2 --- Entry field for conditions to move to the intermediate point.
• Enter a target position of the front end, rear end or intermediate point, in mm.
Absolute mode: Enter a distance from the actuator home.
Incremental mode: The actuator is assumed to operate at a constant pitch. Enter a relative travel
from the current position.
For example, you can move the actuator to the front end from the intermediate
point via incremental moves at a 30-mm pitch.
(Use of the standard type is recommended because zone output signals are
available in this type.)
Command
mode
Standstill
mode
Rear end
Front end
Intermediate point
Position
Absolute mode: The rear end is positioned 5 mm away from the home.
Incremental mode: The front end is positioned 30 mm away from the current position.
Absolute mode: The intermediate point is positioned 200 mm away from the home.
* On the teaching pendant, an equal sign indicates that the applicable position is set in the incremental mode.
33
(3) Speed
• Enter a speed at which to move the actuator, in mm/sec.
The default speed varies depending on the actuator type.
(4) Acceleration/
deceleration
4. Position Table Settings
• Enter an acceleration/deceleration at which to move the actuator, in G.
Basically, specify values inside the rated acceleration/deceleration range shown in the catalog.
The input range is greater than the rated range specified in the catalog. This is to accommodate
situations where “the tact time must be reduced when the work is substantially lighter than the rated
load capacity.”
If the work generates detrimental vibration during acceleration/deceleration, decrease the
acceleration/deceleration settings.
Speed
Acceleration
0.3 G
Start position
Increasing the set value makes deceleration/deceleration quicker, while decreasing it makes
deceleration/deceleration more gradual.
Caution: When setting speed and acceleration/deceleration, refer to the supplied specification list of supported
actuators and also consider the installation condition and load shape to determine appropriate values that
will not cause the actuator to receive excessive impact or vibration.
To set values higher than the recommended values, the payload should be considered and the actuator
characteristics vary depending on the model. Therefore, for the maximum settings allowed for each actuator
model, please contact IAI’s Sales Engineering Section.
Deceleration
0.2 G
Time
Target position
(5) Push
(6) Threshold
34
• Select “positioning operation” or “push-motion operation.”
The factory setting is “0.”
0: Normal positioning operation
Other than 0: The set value indicates a current-limiting value, meaning that push-motion operation
is performed.
• This field is not used with this controller.
The factory setting is “0.”
(7) Positioning band
• What this field means is different in “positioning operation” and “push-motion operation.”
“Positioning operation”:
In the proximity switch type, this field defines the width within which the movement complete signal
turns ON.
In the standard type, this field defines how far before the target position the movement complete
signal turns ON.
The factory setting is “0.1” mm.
Proximity switch type
Movement complete signal
Positioning band
Standard type
Target position
Increasing the positioning band quickens
the starting of next sequence operation, and
consequently the tact time becomes shorter.
Set an optimal value by considering the
balance of the entire system.
Positioning band
“Push-motion operation”:
This field defines the maximum push distance to be applied during
push-motion operation from the target position.
Consider the mechanical variation of the work and set an appropriate
positioning band so that positioning will not complete before the work is
contacted.
4. Position Table Settings
The movement complete
signal turns ON here.
Target position
The work is contacted and push-motion
operation is deemed complete, so the
movement complete signal turns ON here.
Work
Positioning band (maximum push distance)
Target position
35
(8) Zone +/–
4. Position Table Settings
• This field defines the range within which the zone output signal turns ON during operation of the
standard type.
To increase flexibility, a different range can be set for each target position.
[Setting example]
Position Zone + Zone – Comment
[mm] [mm] [mm]
Rear end
Front end
Intermediate point
Move command to the rear end
Home
Rear end
Zone output signal
Move command to the front end
Front end
+ side limit
Zone output signal
Move command to the
intermediate point
point
Intermediate
Zone output signal
(9) Acceleration/
deceleration
• This field is not used with this controller.
The factory setting is “0.”
mode
(10) Incremental
• This field defines whether to use the absolute mode or incremental mode.
The factory setting is “0.”
0: Absolute mode
1: Incremental mode
Warning: When using the proximity switch type, be sure to specify the absolute mode. If the incremental mode is
specified, a position data error will occur.
(11) Command mode
36
• This field is not used with this controller.
The factory setting is “0.”
(12) Standstill mode
• This field defines the power-saving mode to be applied while the actuator is standing by after
completing the positioning to the target position set in the “Position” field under the applicable
position number.
0: All power-saving modes are disabled. * The factory setting is “0” (disabled).
1: Automatic servo-off mode. The delay time is defined by Parameter No. 36.
2: Automatic servo-off mode. The delay time is defined by Parameter No. 37.
3: Automatic servo-off mode. The delay time is defined by Parameter No. 38.
4: Full servo control mode
Full servo control mode
The pulse motor is servo-controlled to reduce the holding current.
Although the specific level of current reduction varies in accordance with the actuator model, load condition, etc.,
generally the holding current drops to around a half to one-fourth.
The servo remains on, so position deviation does not occur.
The actual holding current can be checked in the current monitor screen of the PC software.
Automatic servo-off mode
The servo automatically turns off after elapse of a specified time following the completion of positioning. (Since no
holding current is required, power consumption decreases.)
When the PLC issues the next move command, the servo will turn on again and the actuator will start moving.
Move command
Automatic servo-off mode
Servo status
Servo on
Actuator movement
(The green LED blinks.)
4. Position Table Settings
Target position
Delay time after completion of positioning until
the servo turns off (sec)
This delay time is set by a parameter.
37
4.2 Notes on the ROBO Gripper
(1) Finger Operation
4. Position Table Settings
[1] Definition of position
With the two-finger type, the stroke specification indicates the total sum of travels by both fingers. In other words, the
travel by one finger is one-half this stroke.
A position is specified as a travel by one finger from the home position toward the closing direction.
Therefore, the maximum command value is 5 mm for the GRS type, and 7 mm for the GRM type.
[2] Definition of speed and acceleration
The command value applies to one finger.
With the two-finger type, the relative speed and acceleration are double the command values, respectively.
[3] Gripper operation mode
In applications where the work is to be gripped, be sure to use the “push-motion mode.”
(Note) If the “positioning mode” is used, a servo error may occur while the work is gripped.
[Diagram of gripping force and current-limiting value]
Gripping force (N)
Gripping force P (N)
Gripping force P (N)
Gripping force (N)
Current-limiting value (%) Current-limiting value (%)
Gripping force P (N)
Current-limiting value (%) Current-limiting value (%)
Gripping force P (N)
38
Current-limiting value (%) Current-limiting value (%)
(2) Removing the gripped work
The ROBO Gripper is structured in such a way that even when the controller power is cut off, the work gripping force will still
be maintained by a self-lock mechanism.
If you must remove the gripped work while the power is cut off, turn the open/close screw or remove one of the finger
attachments to release the work.
[Two-finger type]
Turn the open/close screw or remove one of the finger attachments.
Finger attachment
Open/close screw
Turn counterclockwise using
a flat-head screwdriver.
4. Position Table Settings
OPEN
[Three-finger type]
Remove one of the finger attachments.
Finger attachment
Opening
direction
Affixing bolt
Affixing bolt
39
5. Operation Using I/O Signals
This chapter explains the wiring/connection and operation timings you should know to perform positioning operation using a
PLC and I/O signals.
For PIO pattern, two types are available. The movement complete signals have different meanings in each type, so select an
appropriate type according to your specific application.
* The factory setting is to use the LS mode.
5.1 Interface Circuit
The standard interface circuit conforms to the NPN specification, but the PNP specification type is also available as an option.
To simplify wiring, a common power line is used for both the NPN specification and PNP specification. Accordingly you need
not reverse the power connections when using the PNP specification.
5.1.1 External Input Specifications
Item Specification
Number of input points 4 points
Input voltage
Input current 5 mA per circuit
Operating voltage
5. Operation Using I/O Signals
Leak current Max. 1 mA per point
Insulation method Photocoupler
24 VDC ± 10%
ON voltage: Min. 18 V (3.5 mA)
OFF voltage: Max. 6 V (1 mA)
Internal circuit configuration
[NPN specification]
+24-V external
power supply
[PNP specification]
+24-V external
power supply
Controller
Internal circuit
Each
input
Controller
Internal circuit
Each
input
40
5.1.2 External Output Specifications
Item Specification
Number of input points 6 points
Rated load voltage 24 VDC
Maximum current 50 mA per point
Residual voltage Max. 2 V
Insulation method Photocoupler
Internal circuit configuration
[NPN specification]
[PNP specification]
Internal circuit
Internal circuit
5. Operation Using I/O Signals
Controller
Load
Each output
Load
+24-V external
power supply
Controller
Each output
+24-V external
power supply
Load
Load
41
5.1.3 Recognition of Input Signals
The input signals of this controller have an input time constant to prevent malfunction due to chattering, noise, etc.
Each input signal is switched when the new signal state has continued for at least 6 msec.
In other words, when the input is switched from OFF to ON, the controller will recognize that the input signal is ON after 6
msec. The same applies when the input is switched from ON to OFF.
Input signal
Recognition by the controller
5. Operation Using I/O Signals
Not recognized
Not recognized
42
5.2 Proximity Switch Type
This type assumes applications where the servo is turned on/off frequently by the PLC or the automatic servo-off function is
used. Use this type if your application meets the following conditions:
[1] The servo is turned off as a secondary safety measure when the emergency stop circuit is configured to directly cut off
the input power.
(Note) When the servo-on signal is turned OFF, the actuator will decelerate to a stop at the emergency stop torque
for a specified time, after which the servo will turn off.
[2] The servo is turned off to reduce power consumption in case the standby time is long.
[3] The actuator is equipped with a brake, and when reactive force is applied upon stopping due to clamping of the work,
etc., the servo is turned off to apply brake force to supplement the built-in brake.
* Do not use push-motion operation.
Caution: The controller is shipped with the proximity switch type pre-selected, so you need not change any parameter
if the proximity switch type is to be used.
5.2.1 Explanation of I/O Signals
Pin No. Wire color Signal name Signal abbreviationFunction overview
1 Brown 1 +24 V P24V
2 Red 1 0 V N
3 Orange 1
4 Yellow 1
5 Green 1
6 Blue 1 Servo-on command input SON
7 Purple 1
8 Gray 1
9 White 1
10 Black 1 Ready output SVThis signal is output when the servo is on.
11 Brown 2 Homing complete output HEND
12 Red 2 Alarm output *ALM
Rear end move
command input
Front end move
command input
Intermediate point move
command input
Rear end detection
output
Front end detection
output
Intermediate point
detection output
ST0 Move command to the rear end
ST1 Move command to the front end
ST2 Move command to the intermediate point
LS0
LS1
LS2
I/O power supply
The servo remains on while this signal is ON.
The servo remains off while this signal is OFF.
This signal remains ON while the rear end is
recognized.
This signal remains ON while the front end is
recognized.
This signal remains ON while the intermediate point
is recognized.
This signal is OFF immediately after the power is
turned on, and turns ON once homing is
completed.
This signal remains ON while the actuator is
normal, and turns OFF if an alarm has occurred.
5. Operation Using I/O Signals
Move Command Input for Each Position (ST0, ST1, ST2)
Since the number of positioning points is limited to three, you can use these inputs just like when controlling an air cylinder.
While each signal remains ON, the actuator moves to the target position.
If the signal turns OFF before the movement is completed, the actuator will decelerate to a stop.
Before executing each move command, enter a target position as an absolute coordinate in the “Position” field under one
of Nos. 0 to 2 in the position table.
Input signal Target position Remarks
ST0 Rear end The target position is defined in the “Position” field under Position No. 0.
ST1 Front end The target position is defined in the “Position” field under Position No. 1.
ST2 Intermediate point The target position is defined in the “Position” field under Position No. 2.
Servo-on Command Input (SON)
The servo remains on while this signal is ON.
To ensure safety, it is recommended that the PLC be configured to monitor the condition of the entire system and turn ON
this signal once all conditions required for movement are satisfied.
43
Detection Output for Each Position (LS0, LS1, LS2)
Just like the LS signals of an air cylinder, each signal turns ON when the current actuator position is inside the positioning
band set for the applicable target position.
(Note) Even if the servo turns off or an emergency stop is actuated while the actuator is standing still at the target
position, the signal will remain ON as long as the actuator position is inside the positioning band.
Output signal Position detected Remarks
LS0 Rear end
LS1 Front end
LS2 Intermediate point
Ready Output (SV)
This signal is a monitor signal indicating that the servo is on and the motor can be driven.
While this signal is ON, the SV LED (green) on the front face of the enclosure is lit.
The SV LED (green) blinks during the auto servo-off mode.
Use this signal as a condition for starting a move command on the PLC side.
Homing Complete Output (HEND)
This signal is OFF immediately after the power is turned on.
To establish the initial coordinate, only a rear end move command is accepted after power on. Once a rear end move
command has been input, the actuator performs homing and then moves to the rear end.
This signal will turn ON after the homing is completed.
5. Operation Using I/O Signals
Once turned ON, this signal will remain ON until the input power is cut off.
Use this signal as an interlock signal before homing.
The detection position is defined in the “Position” and “Positioning band” fields
under Position No. 0.
The detection position is defined in the “Position” and “Positioning band” fields
under Position No. 1.
The detection position is defined in the “Position” and “Positioning band” fields
under Position No. 2.
(Reference) Acceptance of each move command before homing is explained below:
[1] A rear end move command is accepted.
[2] An intermediate point move command is not accepted.
[3] A front end move command is accepted, but once the actuator moves forward at the homing speed and
contacts the mechanical end, the actuator will stop and a front end detection output (LS1) will turn ON.
In this case, the LS1 signal should be recognized as a tentative signal.
Movement to the front end is permitted to accommodate a situation where there is an obstacle between
the actuator and the rear end.
Alarm Output (*ALM)
This signal remains ON while the actuator is normal, and turns OFF if an alarm has occurred.
Cause the PLC to monitor the OFF state of this signal and provide an appropriate safety measure for the entire system.
Check the nature of each alarm by connecting a PC/teaching pendant, and remove the cause. For details of alarms, refer
to Chapter 7, “Troubleshooting.”
44
5.2.2 Timings after Power On
A
(Note1)
z Steps from Initial Startup to Actuator Adjustment
[1] Confirm that the slider or rod is not contacting a mechanical end or that the work is not contacting any peripheral
equipment.
[2] Cancel the emergency stop or connect the motor drive power.
[3] Supply the 24-VDC I/O power (PIO connector pins 1 and 2).
[4] Supply the 24-VDC controller power (24-V and 0-V terminals on the power-supply terminal block).
[5] Set the minimum required parameters.
(Example) • To temporarily disable the servo-on input because the PLC is not yet ready to accept the input, change
the value of Parameter No. 21 (Servo-on input disable selection) to “1.”
• To change the feed speed during teaching, change the value of Parameter No. 35 (Safety speed).
[6] Input a servo-on signal from the PLC (if the servo-on input is enabled).
[7] Connect a PC or teaching pendant to adjust the actuator.
• Set optimal values in the “Position,” “Speed,” “Acceleration,” “Deceleration” and other fields under Nos.
0 to 2 in the position table.
5. Operation Using I/O Signals
Safety circuit status
Emergency stop cancelled
Supply of 24-VDC I/O
power
Supply of 24-VDC
controller power
Initial parameter
settings
* Servo-on input
(SON)
Green
n orange light comes
SV lamp (front panel)
Ready output (SV)
on for 2 seconds, and then turns off.
T
1
Use a teaching pendant or PC to set optimal
values in the respective fields under Nos. 0 to
2 in the position table.
* If you have changed the value of Parameter No. 21 (Servo-on input disable selection) to “1,” the servo-on input signal
is not required.
Caution: In the “Emergency stop actuated → Turn on the power → Servo-on input → Cancel the emergency stop”
sequence, the servo will turn on up to T
(Note 1)
after the emergency stop is cancelled.
1
Servo-on input
T
1
(Note 1) : Excited-pole detection time = 0.2 to 12 sec
Normally the detection of excited pole completes in approx. 0.2 sec, although the exact time varies from one
actuator to another due to individual differences and also depending on the load condition. If the detection of
excited pole has failed, the excited-pole detection operation will be continued for up to 12 sec.
Emergency stop cancelled
Servo on
(Note 1) sec
45
z Normal Operating Procedure
(Note1)
The operating procedure in a normal condition is explained below.
[1] Confirm that the slider or rod is not contacting a mechanical end or that the work is not contacting any peripheral
equipment.
[2] Cancel the emergency stop or connect the motor drive power.
[3] Supply the 24-VDC I/O power.
[4] Supply the 24-VDC controller power.
[5] Input a servo-on signal from the PLC (if the servo-on input is enabled).
[6] First, input a rear end move command signal from the PLC (to cause the actuator to stand by at the rear end).
[7] Start automatic operation.
Safety circuit status
Supply of 24-VDC
I/O power
Supply of 24-VDC
controller power
Servo-on input
(SON)
5. Operation Using I/O Signals
SV lamp
(front panel)
Emergency stop cancelled
Green
Ready output (SV)
T
1
Input a move command after the SV has
turned ON. (If a move command is input
when the SV is OFF, the command will be
Rear end move
command input (ST0)
Homing complete
output (HEND)
Rear end detection
output (LS0)
Max. 6 msec
Power-on position
(Note 1) : Excited-pole detection time = 0.2 to 12 sec
Normally the detection of excited pole completes in approx. 0.2 sec, although the exact time varies from one
actuator to another due to individual differences and also depending on the load condition. If the detection of
excited pole has failed, the excited-pole detection operation will be continued for up to 12 sec.
Mechanical end
Home position
Start of continuous
Rear end
operation
46
Warning: Since the drive motor is a pulse motor, the excited phase is detected when the servo is turned on for the
first time after turning on the power.
Therefore, one condition for the servo to turn on is that the actuator can move once the servo is turned
on.
If the slider or rod is contacting a mechanical end or the work is contacting any peripheral equipment,
the excited phase may not be detected correctly and an erroneous movement or excitation detection
error may occur.
In this case, move the actuator manually to an appropriate position before turning the servo on.
If the actuator is equipped with a brake, the brake must be forcibly released by turning on the brake
release switch. At this time, be careful not to pinch your hand or damage the robot hand or work by the
slider/rod, as the slider/rod may drop unexpectedly by its dead weight. If the actuator cannot be moved
by hand, you can change Parameter No. 28 (Direction of excited phase signal detection). Before
changing this parameter, contact IAI.
5. Operation Using I/O Signals
47
5.2.3 Position Table and Parameter Settings Required for Operation
Test Operation
Immediately after the system has been started, the movement speed can be reduced as follows to ensure safety of the
operator and prevent damage to the jigs, etc.
Change the applicable parameters as necessary.
→ For details on the change operation, refer to the operation manual for the PC/teaching pendant you are using.
Safety speed during manual feed
The feed speed that applies when the actuator is moved with a PC/teaching pendant is defined by Parameter No. 35.
The factory setting of this parameter is 100 mm/s. Change the setting if necessary.
Note that the maximum speed is limited to 250 mm/s.
Speed override for move commands from the PLC
You can reduce the feed speed that applies when the actuator is moved by outputting a rear end, front end or intermediate
point move command from the PLC.
You can override the “Speed” field of the position table based on the value of Parameter No. 46, in order to reduce the
actual speed to below the speed set in the “Speed” field.
Actual movement speed = [Speed set in the position table] x [Value of Parameter No. 46] ÷ 100
Example) Value in the “Speed” field of the position table 500 (mm/s)
Value of Parameter No. 46 20 (%)
Under the above settings, the actual movement speed becomes 100 mm/s.
The minimum setting unit is 1 (%), and the input range is 1 to 100 (%). The factory setting is 100 (%).
5. Operation Using I/O Signals
48
Full-scale Operation
In situations where the actuator remains standstill for a long time at a standby position, this controller provides several modes
to reduce power consumption in such standstill state as part of the controller’s energy-saving function.
Use these modes after confirming that they will not cause problems in any part of the system.
Power-saving when the standby time after power on is long
In this case, you can select full servo control by Parameter No. 53 (Default standstill mode). (The setting in the “Standstill
mode” field of the position table is ignored.)
→ For details, refer to 5.4, “Power-saving Modes at Standby Positions” and 6.2.2, “Parameters Relating to Actuator
Operating Characteristics.”
Power-saving when the standby time at the target position is long
In this case, you can select one of two modes depending on the value set in the “Standstill mode” field of the position table.
(The setting of Parameter No. 53 is ignored.)
[1] Full servo control
[2] Automatic servo-off
→ For details, refer to 5.4, “Power-saving Modes at Standby Positions” and 6.2.2, “Parameters Relating to Actuator
Operating Characteristics.”
5. Operation Using I/O Signals
49
5.2.4 Homing
This controller adopts an incremental position detector (encoder), so once the power is cut off, the mechanical coordinates will
be lost.
Accordingly, homing must be performed to establish the initial mechanical coordinate every time the power is turned on.
To perform homing, input a rear end move command (ST0).
Operation timings
PLC processing 1: The rear end move command signal (ST0) turns ON when the start button is pressed.
Operation: [1] The actuator starts moving toward the mechanical end on the home side.
PLC processing 2: The rear end move command signal (ST0) turns OFF.
PLC processing 3: The actuator starts continuous operation.
Rear end move
command input (ST0)
Homing complete
output (HEND)
5. Operation Using I/O Signals
Rear end detection
output (LS0)
[2] After contacting the mechanical end, the actuator reverses its direction and temporarily
stops at the home position.
→ The homing complete signal (HEND) turns ON.
[3] The actuator moves toward the rear end, and stops at the rear end.
→ The rear end detection output (LS0) turns ON.
Max. 6 msec
[1]
Power-on position
Caution: Take note of the following points regarding homing:
[1] Confirm that no obstacle exists between the actuator and the rear end.
[2] If an obstacle exists between the actuator and the rear end, move the actuator toward the front end and
remove the obstacle. The controller accepts a front end move command prior to homing to
accommodate the aforementioned condition.
In this case, the actuator moves forward at the homing speed and once the mechanical end is reached,
the front end detection output (LS1) will turn ON.
This LS1 signal should be recognized as a tentative signal.
[3] Do not input an intermediate move command. (Even if an intermediate move command is input, it will
be ignored.)
[2]
Mechanical end
[3]
Home position
Rear end
50
5.2.5 Positioning Operation
This section explains how to move the actuator from the rear end to the front end, by using an actuator with a 400-mm stroke
as an example.
Although the actuator is not stopped at the intermediate point in this example, you can increase the positioning band and use
the intermediate point detection output signal (LS2) just like the zone output signal.
Example of position table
Position
[mm]
Speed
[mm/s]
Acceleration
[G]
Deceleration
[G]
Push
[%]
Positioning
band [mm]
Comment
Rear end
Front end
Intermediate point
Operation timings
PLC processing 1: The rear end move command signal (ST0) and intermediate point move command signal (ST2)
turn OFF, and the front end move command signal (ST1) turns ON.
Operation: [1] The actuator starts moving toward the front end.
[2] When the actuator passes the position corresponding to 5.1 mm, the rear end detection
output (LS0) turns OFF.
[3] When the actuator reaches the position corresponding to 150 mm, the intermediate point
detection output (LS2) turns ON. The LS2 turns OFF once the actuator passes the position
corresponding to 250 mm.
PLC processing 2: If necessary, use the intermediate point detection output (LS2) as a trigger signal for peripheral
equipment.
[4] The actuator starts decelerating after reaching the position corresponding approx. 365 mm.
[5] When the actuator passes the position corresponding to 379.9 mm, the front end detection
output (LS1) turns ON.
[6] The actuator stops after reaching the position corresponding to 380 mm.
PLC processing 3: When the front end detection output (LS1) turns ON, the sequence processing is performed at the
front end. Once the sequence processing is completed, the front end move command signal
(ST1) turns OFF.
Front end move
command input (ST1)
5. Operation Using I/O Signals
Rear end detection
output (LS0)
Intermediate point
detection output (LS2)
Front end detection
output (LS1)
Sequence is
Speed
performed at
the front end
Time
Rear end
5 mm
Intermediate point
200 mm
Front end
380 mm
Caution: Design a ladder sequence circuit where only one move command signal turns ON at a given time. If two or
more signals are input simultaneously, the signals will be processed according to the set priorities.
Priorities: [1] Rear end, [2] front end, [3] intermediate point
51
z Meaning of Position Detection Output Signals (LS0, LS1, LS2)
These signals are handled in the same way as limit switches (LSs). They turn ON when the following conditions are met:
[1] The homing complete output signal (HEND) is ON.
[2] The current position is within the allowable distance before or after each target position (inside the positioning band).
Accordingly, each output signal also turns ON when the actuator is manually moved while the servo is off, in addition to
when the actuator is moving following the applicable move command.
If an emergency stop is actuated while the actuator is moving and operation must be resumed from the PLC when none of
the position detection output signals (LS0, LS1, LS2) is ON, move the actuator manually to the target position to turn on
the corresponding position detection output signal.
Caution: All position detection outputs will turn OFF once a phase A/B open detection alarm generates.
z Notes on Setting the Positioning Band
The positioning band setting defines the range of coordinates at which the position detection output signal will turn ON.
Condition for a position detection output signal to turn ON = Target position ± (positioning band)
With a normal move command, once the position detection output signal turns ON, the sequence processing will be
performed and the move command input signal will turn OFF.
Take note that if the positioning band is wide and the move command input signal turns OFF too quickly, the target position
may not be achieved.
(Example) If the feed speed is 300 mm/s and deceleration is 0.3 G, the deceleration distance is approx. 15 mm. If the
positioning band is set to 30 mm, the position detection output signal will turn ON before the actuator starts
5. Operation Using I/O Signals
decelerating. If the PLC turns OFF the move command input signal immediately thereafter, the controller will
start the deceleration stop processing. As a result, the actuator will stop before the target position.
Front end move
command input (ST1)
Front end detection
output (LS1)
The actuator stops before
the front end.
Positioning band
The positioning band is greater
than the deceleration distance.
Correct starting point
of deceleration
Front end
52
z Speed Change during Movement
If the work is made of soft material or is a bottle or has other shape that tips over easily, one of the following two methods
can be used to prevent the work from receiving vibration or impact upon stopping:
[1] Decrease the deceleration to make the deceleration curve more gradual.
[2] Initially move the actuator at the rated speed, and decrease the feed speed shortly before the target position.
An example of [2], or decreasing the feed speed, is explained.
(Example) When moving the actuator from the rear end to the front end, use the intermediate point as a dummy point.
Set the feed speed to 300 mm/s to the intermediate point, and decrease it to 20 mm/s after the
intermediate point.
Example of position table
Position
[mm]
Speed
[mm/s]
Acceleration
[G]
Operation timings
PLC processing 1: The rear end move command signal (ST0) and front end move command signal (ST1) turn OFF,
and the intermediate point move command signal (ST2) turns ON.
Operation: [1] The actuator starts moving toward the intermediate point.
[2] When the actuator reaches the position corresponding to 270 mm, the intermediate point
detection output (LS2) turns ON.
PLC processing 2: The intermediate point move command signal (ST2) turns OFF, and the front end move
command signal (ST1) turns ON.
[3] The actuator decelerates from 300 mm/s to 20 mm/s, and stops at the front end.
Deceleration
[G]
Push
[%]
Positioning
band [mm]
Comment
Rear end
Front end
Intermediate point
5. Operation Using I/O Signals
Intermediate move
command input (ST2)
Front end move
command input (ST1)
Intermediate point
detection output (LS2)
Front end detection
output (LS1)
Speed
Time
Rear end
5 mm
Intermediate point
300 mm
Front end
380 mm
Caution: By setting a wide positioning band for the intermediate point, smooth speed change can be achieved without
the actuator stopping at the intermediate point.
53
z Pausing during Movement
Move commands are implemented based on signal levels. Accordingly, the actuator moves while the signal is ON, and
once the signal turns OFF, the actuator will decelerate to a stop and the operation will end.
If you want to pause the actuator as a secondary safety measure, turn the move command signals OFF.
(Example) Pausing the actuator while moving toward the front end
Front end move
command input (ST1)
Front end detection
output (LS1)
Speed
Moving Stopped Moving
Time
Front end
z Forced Return in Case of Emergency
The following example explains how to return the actuator to the standby position (rear end) after an emergency situation
occurred while the actuator was moving.
5. Operation Using I/O Signals
(Example) Return the actuator to the standby position (rear end) after an emergency situation occurred while the actuator
was moving toward the front end
Operation timings
PLC processing 1: Upon occurrence of an emergency situation, the rear end move command signal (ST0) turns ON,
Operation: [1] After the front end move command signal (ST1) turns OFF, the actuator decelerates to a
[2] The actuator reverses its direction and starts moving toward the rear end.
[3] When the actuator reaches the rear end, the rear end positioning complete output (PE0)
PLC processing 2: The rear end move command signal (ST0) turns OFF.
Front end move
command input (ST1)
Rear end move
command input (ST0)
Rear end detection
output (LS0)
and then the front end move command signal (ST1) turns OFF.
stop.
turns ON.
Occurrence of
emergency situation
Speed
54
Moving to + direction Moving to - direction
Time
Rear end
5.3 Standard Type
This type assumes situations where the system must achieve high productivity or uses push-motion operation. Use this type if
your application meets the following conditions:
[1] Use the zone output signal to quicken the operation timings with respect to the respective equipment and thereby
reduce the tact time.
[2] Use the zone output signal as an interlock signal to prevent contact with peripheral equipment.
[3] When missed work must be detected in push-motion operation, use the zone output signal as a “simple yardstick” to
determine if the work has been contacted properly or missed.
Caution: The controller is shipped with the proximity switch type pre-selected. If you want to use the standard type, set
the value of Parameter No. 25 (PIO pattern selection) to “1.”
→ Refer to Chapter 6, “Parameter Settings”
5.3.1 Explanation of I/O Signals
Pin No. Wire color Signal name Signal abbreviationFunction overview
1 Brown 1 +24 V P24V
2 Red 1 0 V N
3 Orange 1
4 Yellow 1
5 Green 1
6 Blue 1 Servo-on command input SON
7 Purple 1
8 Gray 1
9 White 1
10 Black 1
11 Brown 2 Homing complete output HEND
12 Red 2 Alarm output *ALM
Rear end move
command input
Front end move
command input
Intermediate point move
command input
Rear end positioning
complete output
Front end positioning
complete output
Intermediate point
positioning complete output
Zone output
ST0 Move command to the rear end
ST1 Move command to the front end
ST2 Move command to the intermediate point
PE0
PE1
PE2
PZONE
I/O power supply
The servo remains on while this signal is ON.
The servo remains off while this signal is OFF.
This signal turns ON upon completion of movement
to the rear end.
This signal turns ON upon completion of movement
to the front end.
This signal turns ON upon completion of movement
to the intermediate point.
This signal remains ON while the actuator is inside the
range set in the “Zone +” and “Zone –” fields of the
position table.
This signal is OFF immediately after the power is
turned on, and turns ON once homing is completed.
This signal remains ON while the actuator is
normal, and turns OFF if an alarm has occurred.
5. Operation Using I/O Signals
Move Command Input for Each Position (ST0, ST1, ST2)
Since the number of positioning points is limited to three, you can use these inputs just like when controlling an air cylinder.
While each signal remains ON, the actuator moves to the target position.
If the signal turns OFF before the movement is completed, the actuator will decelerate to a stop.
Before executing each move command, enter a target position as an absolute coordinate in the “Position” field under one
of Nos. 0 to 2 in the position table.
Input signal Target position Remarks
ST0 Rear end The target position is defined in the “Position” field under Position No. 0.
ST1 Front end The target position is defined in the “Position” field under Position No. 1.
ST2 Intermediate point The target position is defined in the “Position” field under Position No. 2.
Servo-on Command Input (SON)
The servo remains on while this signal is ON.
To ensure safety, it is recommended that the PLC be configured to monitor the condition of the entire system and turn ON
this signal once all conditions required for movement are satisfied.
55
Positioning Complete Output for Each Position (PE0, PE1, PE2)
After a move command, the corresponding positioning complete output turns ON when the actuator has entered the
positioning band before the target position.
When the next move command to a different position is issued, the positioning complete output turns OFF.
(Note) If the servo turns off or an emergency stop is actuated while the actuator is standing still at the target position, the
positioning complete output will turn OFF. When the servo subsequently turns on, the output will turn ON again if
the actuator is still inside the positioning band.
Output signal Position detected Remarks
PE0 Rear end
PE1 Front end
PE2 Intermediate point
Zone Output (PZONE)
This signal can be used as a limit switch (LS) at the intermediate point, or as a simple yardstick during push-motion
operation.
The zone output signal remains ON while the actuator is inside the range specified by the “Zone +” and “Zone –” fields of
the position table, and turns OFF once the actuator leaves the range.
(Note) This signal is enabled after the coordinate system has been established following the completion of homing. It will
not be output immediately after the power is turned on.
As long as homing has already been completed, this signal remains effective while the servo is off or an
emergency stop is actuated.
5. Operation Using I/O Signals
Homing Complete Output (HEND)
This signal is OFF immediately after the power is turned on.
To establish the initial coordinate, only a rear end move command is accepted after power on. Once a rear end move
command has been input, the actuator performs homing and then moves to the rear end.
This signal will turn ON after the homing is completed.
Once turned ON, this signal will remain ON until the input power is cut off.
Use this signal as an interlock signal before homing.
(Reference) Acceptance of each move command before homing is explained below:
[1] A rear end move command is accepted.
[2] An intermediate point move command is not accepted.
[3] A front end move command is accepted, but once the actuator moves forward at the homing speed and
contacts the mechanical end, the actuator will stop and a front end positioning complete output (PE1) will
turn ON.
In this case, the PE1 signal should be recognized as a tentative signal.
Movement to the front end is permitted to accommodate a situation where there is an obstacle between
the actuator and the rear end.
The output position is defined in the “Position” and “Positioning band” fields under
Position No. 0.
The output position is defined in the “Position” and “Positioning band” fields under
Position No. 1.
The output position is defined in the “Position” and “Positioning band” fields under
Position No. 2.
Alarm Output (*ALM)
This signal remains ON while the actuator is normal, and turns OFF if an alarm has occurred.
Cause the PLC to monitor the OFF state of this signal and provide an appropriate safety measure for the entire system.
Check the nature of each alarm by connecting a PC/teaching pendant, and remove the cause. For details of alarms, refer
to Chapter 7, “Troubleshooting.”
56
5.3.2 Timings after Power On
A
z Steps from Initial Startup to Actuator Adjustment
[1] Confirm that the slider or rod is not contacting a mechanical end or that the work is not contacting any peripheral
equipment.
[2] Cancel the emergency stop or connect the motor drive power.
[3] Supply the 24-VDC I/O power (PIO connector pins 1 and 2).
[4] Supply the 24-VDC controller power (24-V and 0-V terminals on the power-supply terminal block).
[5] Set the minimum required parameters.
(Example) • To switch to the standard type, change the value of Parameter No. 25 (PIO pattern selection) to “1.”
• To temporarily disable the servo-on input because the PLC is not yet ready to accept the input, change
the value of Parameter No. 21 (Servo-on input disable selection) to “1.”
• To change the feed speed during teaching, change the value of Parameter No. 35 (Safety speed).
[6] Input a servo-on signal from the PLC.
[7] Connect a PC or teaching pendant to adjust the actuator.
• Set optimal values in the “Position,” “Speed,” “Acceleration,” “Deceleration” and other fields under Nos.
0 to 2 in the position table.
Emergency stop cancelled
Safety circuit status
Supply of 24-VDC
I/O power
Supply of 24-VDC
controller power
Initial parameter
settings
5. Operation Using I/O Signals
* Servo-on input
(SON)
SV lamp
(front panel)
* If you have changed the value of Parameter No. 21 (Servo-on input disable selection) to “1,” the servo-on input signal
is not required.
Caution: In the “Emergency stop actuated → Turn on the power → Servo-on input → Cancel the emergency stop”
sequence, the servo will turn on up to 170 msec after the emergency stop is cancelled.
n orange light comes
on for 2 seconds, and
then turns off.
Max. 170 msec
Servo-on input
Max. 170 msec
Green
Use a teaching pendant or PC to set
optimal values in the respective fields
under Nos. 0 to 2 in the position table.
Emergency stop cancelled
Servo on
57
z Normal Operating Procedure
The operating procedure in a normal condition is explained below.
[1] Confirm that the slider or rod is not contacting a mechanical end or that the work is not contacting any peripheral
equipment.
[2] Cancel the emergency stop or connect the motor drive power.
[3] Supply the 24-VDC I/O power.
[4] Supply the 24-VDC controller power.
[5] Input a servo-on signal from the PLC.
[6] First, input a rear end move command signal from the PLC (to cause the actuator to stand by at the rear end).
[7] Start automatic operation.
Safety circuit status
Supply of 24-VDC
I/O power
Supply of 24-VDC
controller power
Servo-on input
(SON)
5. Operation Using I/O Signals
SV lamp
(front panel)
Emergency stop cancelled
Green
Max. 170 msec
Rear end move
command input (ST0)
Homing complete
output (HEND)
Rear end positioning
complete output (PE0)
Max. 6 msec
Input a move command following a delay time of at
least 170 msec after a SON input. (If the delay time
is shorter, the move command will be ignored.)
Start of continuous
operation
Rear end
Power-on position
Mechanical end
Home position
58
Warning: Since the drive motor is a pulse motor, the excited phase is detected when the servo is turned on for the
first time after turning on the power.
Therefore, one condition for the servo to turn on is that the actuator can move once the servo is turned
on.
If the slider or rod is contacting a mechanical end or the work is contacting any peripheral equipment,
the excited phase may not be detected correctly and an erroneous movement or excitation detection
error may occur.
In this case, move the actuator manually to an appropriate position before turning the servo on.
If the actuator is equipped with a brake, the brake must be forcibly released by turning on the brake
release switch. At this time, be careful not to pinch your hand or damage the robot hand or work by the
slider/rod, as the slider/rod may drop unexpectedly by its dead weight. If the actuator cannot be moved
by hand, you can change Parameter No. 28 (Direction of excited phase signal detection). Before
changing this parameter, contact IAI.
5. Operation Using I/O Signals
59
5.3.3 Position Table and Parameter Settings Required for Operation
Test Operation
Immediately after the system has been started, the movement speed can be reduced as follows to ensure safety of the
operator and prevent damage to the jigs, etc.
Change the applicable parameters as necessary.
→ For details on the change operation, refer to the operation manual for the PC/teaching pendant you are using.
Safety speed during manual feed
The feed speed that applies when the actuator is moved with a PC/teaching pendant is defined by Parameter No. 35.
The factory setting of this parameter is 100 mm/s. Change the setting if necessary.
Note that the maximum speed is limited to 250 mm/s.
Speed override for move commands from the PLC
You can reduce the feed speed that applies when the actuator is moved by outputting a move command from the PLC.
You can override the “Speed” field of the position table based on the value of Parameter No. 46, in order to reduce the
actual speed to below the speed set in the “Speed” field.
Actual movement speed = [Speed set in the position table] x [Value of Parameter No. 46] ÷ 100
Example) Value in the “Speed” field of the position table 500 (mm/s)
Value of Parameter No. 46 20 (%)
Under the above settings, the actual movement speed becomes 100 mm/s.
The minimum setting unit is 1 (%), and the input range is 1 to 100 (%). The factory setting is 100 (%).
5. Operation Using I/O Signals
60
Full-scale Operation
In situations where the actuator remains standstill for a long time at a standby position, this controller provides several modes
to reduce power consumption in such standstill state as part of the controller’s energy-saving function.
You can also select the positioning complete signal state to be applied when the servo turns off or “position deviation” occurs
while the actuator is standing still after completion of positioning.
Use these modes after confirming that they will not cause problems in any part of the system.
Power-saving when the standby time after power on is long
In this case, you can select full servo control by Parameter No. 53 (Default standstill mode). (The setting in the “Standstill
mode” field of the position table is ignored.)
→ For details, refer to 5.4, “Power-saving Modes at Standby Positions” and 6.2.2, “Parameters Relating to Actuator
Operating Characteristics.”
Power-saving when the standby time at the target position is long
In this case, you can select one of two modes depending on the value set in the “Standstill mode” field of the position table.
(The setting of Parameter No. 53 is ignored.)
[1] Full servo control
[2] Automatic servo-off
→ For details, refer to 5.4, “Power-saving Modes at Standby Positions” and 6.2.2, “Parameters Relating to Actuator
Operating Characteristics.”
Complete signal output mode
You can select the positioning complete signal state to be applied when the servo turns off or “position deviation” occurs
while the actuator is standing still after completion of positioning.
This setting uses Parameter No. 39. Select an appropriate mode by considering the characteristics of the specific control.
→ For details, refer to 6.2.3, “Parameters Relating to External Interface.”
5. Operation Using I/O Signals
61
5.3.4 Homing
This controller adopts an incremental position detector (encoder), so once the power is cut off, the mechanical coordinates will
be lost.
Accordingly, homing must be performed to establish the initial mechanical coordinate every time the power is turned on.
To perform homing, input a rear end move command (ST0).
Operation timings
PLC processing 1: The rear end move command signal (ST0) turns ON when the start button is pressed.
Operation: [1] The actuator starts moving toward the mechanical end on the home side.
PLC processing 2: The rear end move command signal (ST0) turns OFF.
PLC processing 3: The actuator starts continuous operation.
Rear end move
command input (ST0)
Homing complete
output (HEND)
5. Operation Using I/O Signals
Rear end positioning
complete output (PE0)
Max. 6 msec
[2] After contacting the mechanical end, the actuator reverses its direction and temporarily
stops at the home position.
→ The homing complete signal (HEND) turns ON.
[3] The actuator moves toward the rear end, and stops at the rear end.
→ The rear end positioning complete output (PE0) turns ON.
[1]
[2]
[3]
Power-on position
Mechanical end
Caution: Take note of the following points regarding homing:
[1] Confirm that no obstacle exists between the actuator and the rear end.
[2] If an obstacle exists between the actuator and the rear end, move the actuator toward the front end and
remove the obstacle. The controller accepts a front end move command prior to homing to
accommodate the aforementioned condition.
In this case, the actuator moves forward at the homing speed and once the mechanical end is reached,
the front end positioning complete output (PE1) will turn ON.
This PE1 signal should be recognized as a tentative signal.
[3] Do not input an intermediate move command. (Even if an intermediate move command is input, it will
be ignored.)
62
Rear end
Home position
5.3.5 Positioning Operation
This section explains how to move the actuator from the rear end to the intermediate point and then to the front end, by using
an actuator with a 400-mm stroke as an example.
Example of position table
Position
[mm]
Speed
[mm/s]
Acceleration
[G]
Operation timings
PLC processing 1: The rear end move command signal (ST0) and front end move command signal (ST1) turn OFF,
and the intermediate point move command signal (ST2) turns ON.
Operation: [1] The actuator starts moving toward the intermediate point, and the rear end positioning
complete output (PE0) turns OFF.
[2] When the actuator reaches the position corresponding to 199.9 mm, the intermediate point
positioning complete output (PE2) turns ON.
[3] After reaching the position corresponding to 200 mm, the actuator stops.
PLC processing 2: When the intermediate point positioning complete output (PE2) turns ON, the sequence
processing is performed at the intermediate point.
Once the sequence processing is completed, the intermediate point move command signal (ST2)
turns OFF, and the front end move command signal (ST1) turns ON.
[4] The actuator starts moving toward the front end, and the intermediate point positioning
complete output (PE2) turns OFF.
[5] When the actuator reaches the position corresponding to 379.9 mm, the front end
positioning complete output (PE1) turns ON.
[6] After reaching the position corresponding to 380 mm, the actuator stops.
PLC processing 3: When the front end positioning complete output (PE1) turns ON, the sequence processing is
performed at the front end.
Once the sequence processing is completed, the front end move command signal (ST1) turns OFF.
Intermediate point move
command input (ST2)
Front end move command
input (ST1)
Deceleration
[G]
Push
[%]
Positioning
band [mm]
Comment
Rear end
Front end
Intermediate point
5. Operation Using I/O Signals
Rear end positioning
complete output (PE0)
Intermediate point positioning
complete output (PE2)
Front end positioning
complete output (PE1)
Sequence is
performed at
the front end
Speed
Sequence is
performed at the
intermediate
point
Time
Rear end
5 mm
Intermediate point
200 mm
Front end
380 mm
Caution: Design a ladder sequence circuit where only one move command signal turns ON at a given time. If two or
more signals are input simultaneously, the signals will be processed according to the set priorities.
Priorities: [1] Rear end, [2] front end, [3] intermediate point
63
z Meaning of Positioning Complete Output Signals (PE0, PE1, PE2)
These signals indicate that the target position has been reached. They turn ON when the following conditions are met:
[1] The homing complete output signal (HEND) is ON.
[2] The actuator has entered the positioning band before the target position.
Each signal can be used as trigger signal for peripheral equipment when the target position is reached.
Increasing the positioning band quickens the timing of the next command issued to peripheral equipment, and
consequently the tact time becomes shorter.
(Note) If the servo turns off or an emergency stop is actuated while the actuator is standing still at the target position,
the output will turn OFF. When the servo subsequently turns on, the output will turn ON again if the actuator is
still inside the positioning band.
Caution: All position detection outputs will turn OFF once a phase A/B open detection alarm generates.
z Notes on Setting the Positioning Band
The positioning band setting defines the range of coordinates at which the positioning complete output signal will turn ON.
Condition for a positioning complete output signal to turn ON = The actuator enters the positioning band before the target
position
With a normal move command, once the positioning complete output signal turns ON, the sequence processing will be
performed and the move command input signal will turn OFF.
Take note that if the positioning band is wide and the move command input signal turns OFF too quickly, the target position
may not be achieved.
5. Operation Using I/O Signals
(Example) If the feed speed is 300 mm/s and deceleration is 0.3 G, the deceleration distance is approx. 15 mm. If the
positioning band is set to 30 mm, the positioning complete output signal will turn ON before the actuator starts
decelerating.
If the PLC turns OFF the move command input signal immediately thereafter, the controller will start the
deceleration stop processing.
As a result, the actuator will stop before the target position.
Front end move
command input (ST1)
Front end positioning
complete output (PE1)
The actuator stops before
the front end.
Positioning band
The positioning band is greater
than the deceleration distance.
Correct starting point
of deceleration
Front end
64
z Speed Change during Movement
If the work is made of soft material or is a bottle or has other shape that tips over easily, one of the following two methods
can be used to prevent the work from receiving vibration or impact upon stopping:
[1] Decrease the deceleration to make the deceleration curve more gradual.
[2] Initially move the actuator at the rated speed, and decrease the feed speed shortly before the target position.
An example of [2], or decreasing the feed speed, is explained.
(Example) When moving the actuator from the rear end to the front end, use the intermediate point as a dummy point.
Set the feed speed to 300 mm/s to the intermediate point, and decrease it to 20 mm/s after the
intermediate point.
Example of position table
Position
[mm]
Speed
[mm/s]
Acceleration
[G]
Operation timings
PLC processing 1: The rear end move command signal (ST0) and front end move command signal (ST1) turn OFF,
and the intermediate point move command signal (ST2) turns ON.
Operation: [1] The actuator starts moving toward the intermediate point.
[2] When the actuator reaches the position corresponding to 270 mm, the intermediate point
positioning complete output (PE2) turns ON.
PLC processing 2: The intermediate point move command signal (ST2) turns OFF, and the front end move
command signal (ST1) turns ON.
[3] The actuator decelerates from 300 mm/s to 20 mm/s, and stops at the front end.
Deceleration
[G]
Push
[%]
Positioning
band [mm]
Comment
Rear end
Front end
Intermediate point
5. Operation Using I/O Signals
Intermediate point move
command input (ST2)
Front end move command
input (ST1)
Intermediate point positioning
complete output (PE2)
Front end positioning
complete output (PE1)
Speed
Time
Rear end
5 mm
Intermediate point
200 mm
Front end
380 mm
Caution: By setting a wide positioning band for the intermediate point, smooth speed change can be achieved without
the actuator stopping at the intermediate point.
65
z Pausing during Movement
Move commands are implemented based on signal levels. Accordingly, the actuator moves while the signal is ON, and
once the signal turns OFF, the actuator will decelerate to a stop and the operation will end.
If you want to pause the actuator as a secondary safety measure, turn the move command signals OFF.
(Example) Pausing the actuator while moving toward the front end
Front end move
command input (ST1)
Front end positioning
complete output (PE1)
Speed
Moving Stopped Moving
Time
Front end
z Forced Return in Case of Emergency
The following example explains how to return the actuator to the standby position (rear end) after an emergency situation
occurred while the actuator was moving.
5. Operation Using I/O Signals
(Example) Return the actuator to the standby position (rear end) after an emergency situation occurred while the actuator
was moving toward the front end
Operation timings
PLC processing 1: Upon occurrence of an emergency situation, the rear end move command signal (ST0) turns ON,
Operation: [1] After the front end move command signal (ST1) turns OFF, the actuator decelerates to a
[2] The actuator reverses its direction and starts moving toward the rear end.
[3] When the actuator reaches the rear end, the rear end positioning complete output (PE0)
PLC processing 2: The rear end move command signal (ST0) turns OFF.
Front end move
command input (ST1)
Rear end move
command input (ST0)
Rear end positioning
complete output (PE0)
and then the front end move command signal (ST1) turns OFF.
stop.
turns ON.
Occurrence of
emergency situation
Speed
66
Moving to + direction Moving to - direction
Time
Rear end
z Constant Pitch Feed
Since a target position can also be set as a relative distance, an application where the actuator performs positioning to a
series of works placed at equal intervals is also possible.
(Example) How to move the actuator from the intermediate point to the front end at a 50-mm pitch is explained.
Under No. 1 in the position table, enter “50” (mm) in the “Position” field and “1” in the “Incremental” field. (1
defines that 50 mm is a relative distance.)
The PLC manages the number of movements to determine the end of positioning. To be doubly sure, the zone
output signal can also be used concurrently.
To front end
50-mm
Rear
end
Intermediate
point
pitch
Last work
5. Operation Using I/O Signals
Zone output signal
Set the coordinate immediately before the last work as the
+ side limit.
Example of position table
Position
[mm]
(Note) When issuing a rear end move command and different zone limits must be set, change the zone
limits.
* On the teaching pendant, an equal sign indicates that the applicable position is set in the incremental mode.
Zone +
[mm]
Zone –
[mm]
IncrementalComment
Rear end (Standby position)
Front end (Pitch)
Intermediate point (Starting point)
67
Operation timings
PLC processing 1: The rear end move command signal (ST0) and front end move command signal (ST1) turn OFF,
Operation: [1] The actuator starts moving, and when it reaches the intermediate point, the intermediate
PLC processing 2: The intermediate point move command signal (ST2) turns OFF and the sequence processing is
[2] When the actuator starts moving toward the front end, the intermediate point positioning
PLC processing 3: The front end move command signal (ST1) turns OFF, and the sequence processing is
[3] When the actuator starts moving toward the front end, the front end positioning complete
* The same steps are repeated for the number of works.
The PLC should be programmed so that if the zone output signal is OFF when the signal ON/OFF state is checked
upon completion of positioning, the PLC will recognize that the applicable work is the last work.
If the PLC count and the zone output signal state do not match, the signal timings may not be synchronized.
5. Operation Using I/O Signals
and the intermediate point move command signal (ST2) turns ON.
point positioning complete output (PE2) turns ON. The zone output signal also turns ON.
performed.
Once the sequence processing is completed, the front end move command signal (ST1) turns
ON.
complete output (PE2) turns OFF.
When the actuator moves 50 mm thereafter, the front end positioning complete output (PE1)
turns ON.
performed.
Once the sequence processing is completed, the front end move command signal (ST1) turns
ON.
output (PE1) turns OFF.
When the actuator moves 50 mm thereafter, the front end positioning complete output (PE1)
turns ON again.
Intermediate point move
command input (ST2)
Front end move command
input (ST1)
Intermediate point positioning
complete output (PE2)
Front end positioning
complete output (PE1)
Zone output (ZONE)
Speed
[1][2]
PLC
processing
Intermediate
point
Caution: Note on checking positioning complete signals
When a move command signal turns ON, the relevant positioning complete output signal turns OFF
temporarily. To determine if positioning has completed, therefore, check the leading edge of the positioning
complete output signal after it has turned OFF.
PLC
processing
[3]
PLC
processing
Time
68
5.3.6 Zone Output Signal
This signal remains ON while the actuator is inside the zone set in the position table.
The zone output signal can be set only at a single point, but a different zone can be set for the move command corresponding
to each target position (rear end, front end, or intermediate point).
Use the zone output signal in the following situations.
[1] Set an interlock signal to prevent contact with peripheral equipment.
[2] Set a trigger signal for peripheral equipment to reduce the tact time.
[3] Detect missed work during push-motion operation.
[4] Determine the end point when positioning to a series of aligned works via constant pitch feed.
(Note) In constant pitch feed, the “Position” field indicates a relative distance. However, the zone is still set as an
absolute coordinate from the home.
[Setting example]
Move command to the rear end
Position
[mm]
Zone +
[mm]
Home
Zone –
Rear end
[mm]
Comment
Rear end
Front end
Intermediate point
5. Operation Using I/O Signals
Zone output signal
Move command to the front end
Zone output signal
Move command to the intermediate point
Zone output signal
Front end
Intermediate
point
+ side limit
69
5.3.7 Push-motion Operation
Just like you can with an air cylinder, you can maintain the actuator in a condition where the tip of the rod is pushing a work.
Accordingly, the actuator can be used with systems that clamp, press-fit or otherwise push works.
This function is enabled by entering a current-limiting value in the “Push” field of the position table.
* If the “Push” field contains “0,” positioning operation is applied. If the value in this field is other than “0,” push-motion
operation is applied.
The push torque [N] is determined by the current-limiting value [%] in the “Push” field.
[Basics of push-motion operation]
[1] Enter a current-limiting value in the “Push” field for the front end (Position No. 1) to define that a front end command will
be implemented as push-motion operation.
* Determine an appropriate push force based on the characteristics of the work (shape, material, etc.), and obtain a
current-limiting value by using the “push force vs. current-limiting value” correlation diagram (explained later) of the
actuator as a reference.
[2] In the “Positioning band” field, enter the maximum travel (relative distance) from the front end permitted during
push-motion operation.
(Consider a position error that may generate when the work is installed, as well as a possible depression if the work is
made of elastic material.)
[3] If it is possible for the system to miss the work, use the zone output signal to detect missed work. To do this, enter
appropriate values in the “Zone +” and “Zone –” fields to specify a range within which the work is deemed to have been
contacted successfully.
[4] Change the value of Parameter No. 6 (Push-motion completion judgment time), if necessary.
(The factory setting is 255 msec, which is the maximum value that can be set for this parameter.)
[5] Change the value of Parameter No. 34 (Push speed), if necessary.
5. Operation Using I/O Signals
(The factory setting is different in accordance with the actuator model.)
* For details on these parameters, refer to Chapter 6, “Parameter Settings.”
(Example) An example with a rod actuator with a 200-mm stroke, where the current-limiting value is set to 40%,
maximum travel in push-motion operation to 20 mm, and successful contact range to between 180 and
185 mm, is explained.
Under No. 1 in the position table, enter “160” (mm) in the “Position” field, “40” (%) in the “Push” field, “30”
mm in the “Positioning band” field, “185” (mm) in the “Zone +” field, and “180” (mm) in the “Zone –” field.
Example of position table
Position
[mm]
Push
[%]
Positioning
band [mm]
Zone +
[mm]
Zone –
[mm]
Comment
Rear end (Standby position)
Front end
Intermediate point
70
Operation timings
PLC processing 1: The rear end move command signal (ST0) and intermediate point move command signal (ST2)
turn OFF, and the front end move command signal (ST1) turns ON.
Operation: [1] The actuator starts moving and upon reaching the front end (160 mm), the actuator
decelerates to the push speed and continues moving at the new speed.
When the actuator contacts the work and the “push-motion completion” condition is satisfied,
the front end positioning complete output (PE1) turns ON.
If the stopped position is between 180 and 185 mm, the zone output signal turns ON.
PLC processing 2: When the zone output signal turns ON to indicate that the work has been successfully contacted,
the sequence processing is performed in a “condition where the work is being pushed.”
Once the sequence processing is completed, the front end move command signal (ST1) turns
OFF and the rear rend move command signal (ST0) turns ON.
[2] When the actuator starts moving toward the rear end, the front end positioning complete
output (PE1) turns OFF and the zone output signal also turns OFF temporarily. Once the
actuator returns to the position corresponding to 100 mm, the zone output signal turns ON
again. When the actuator reaches the rear end thereafter, the rear end positioning complete
output (PE0) turns ON.
PLC processing 3: To issue a command to peripheral equipment while the actuator is returning to the rear end, in
order to reduce the tact time, you can use the zone output signal as a trigger signal (the signal
turns ON once the actuator has returned to the position corresponding to 100 mm).
* If the zone output signal dose not turn ON when the front end positioning complete output (PE1) is ON, the condition
should be interpreted as “missed work” or “abnormal work installation position.”
Front end move
command input (ST1)
Rear end move
command input (ST0)
5. Operation Using I/O Signals
Front end positioning
complete output (PE1)
Rear end positioning
complete output (PE0)
Zone output
Speed
Sequence
processing
Work
+ direction– direction
Rear end
Front end
command position
contact
Stop position upon
Time
Rear end
Positioning band
71
The correlation diagram of current-limiting value [%] and push force [N] is shown below for each actuator.
Note: For the specific data with the RCP3, check the operation manual for the RCP3.
z Slider Type
(1) SA5C/SA6C/SS7C type (2) SA7C type
Push force (N) Push force (N)
5. Operation Using I/O Signals
Current-limiting value (%) Current-limiting value (%)
Low-speed type
(lead: 3 mm)
Push force (N) Push force (N)
Current-limiting value (%) Current-limiting value (%)
Medium-speed type
(lead: 6 mm)
High-speed type
(lead: 12 mm)
Low-speed type
(lead: 4 mm)
Medium-speed type
(lead: 8 mm)
High-speed type
(lead: 16 mm)
Push force (N)
Current-limiting value (%) Current-limiting value (%)
Caution: Accuracy of push force while the actuator is standing still is not guaranteed. The above figures should be
used for reference purposes only.
Take note that if the push force is too small, the actuator may malfunction during push-motion operation due
to slide resistance, etc.
The maximum current-limiting values are as shown in the graphs above. The minimum current-limiting
values should be at least 20%.
Push force (N)
72
(3) SS8C type
Push force (N) Push force (N) Push force (N)
Low-speed type
(lead: 5 mm)
Current-limiting value (%)
Medium-speed type
(lead: 10 mm)
Current-limiting value (%)
High-speed type
(lead: 20 mm)
5. Operation Using I/O Signals
Current-limiting value (%)
Caution: Accuracy of push force while the actuator is standing still is not guaranteed. The above figures should be
used for reference purposes only.
Take note that if the push force is too small, the actuator may malfunction during push-motion operation due
to slide resistance, etc.
The maximum current-limiting values are as shown in the graphs above. The minimum current-limiting
values should be at least 20%.
73
z Rod Type
(1) RA2C type (2) RA3C type
Push force (N)
Current-limiting value (%)
5. Operation Using I/O Signals
Low-speed type
(lead: 2.5 mm)
Push force (N) Push force (N)
Current-limiting value (%)
Medium-speed type
(lead: 5 mm)
Current-limiting value (%)
Caution: Accuracy of push force while the actuator is standing still is not guaranteed. The above figures should be
used for reference purposes only.
Take note that if the push force is too small, the actuator may malfunction during push-motion operation due
to slide resistance, etc.
The maximum current-limiting values are as shown in the graphs above. The minimum current-limiting
values should be at least 20%.
74
(3) RA4C type (4) RA6C type
Low-speed type
(lead: 2.5 mm)
Push force (N)
Current-limiting value (%)
Medium-speed type
(lead: 5 mm)
Push force (N)
Push force (N)
Push force (N)
Low-speed type
(lead: 4 mm)
Current-limiting value (%)
Medium-speed type
(lead: 8 mm)
5. Operation Using I/O Signals
Current-limiting value (%)
High-speed type
(lead: 10 mm)
Push force (N)
Current-limiting value (%)
Caution: Accuracy of push force while the actuator is standing still is not guaranteed. The above figures should be
used for reference purposes only.
Take note that if the push force is too small, the actuator may malfunction during push-motion operation due
to slide resistance, etc.
The maximum current-limiting values are as shown in the graphs above. The minimum current-limiting
values should be at least 20%.
Push force (N)
Current-limiting value (%)
High-speed type
(lead: 16 mm)
Current-limiting value (%)
75
5.3.8 Examples of Tact Time Reduction Combining Zone Outputs and 3 Stop Points
This section explains how the tact time is reduced differently between an application with two stop points only, and an
application with three stop points where zone output signals are also used.
z 2 Stop Points
Rear end Front end Front end Rear end
Assume that Machine M has completed processing. If there are two stop points, the vertical axis rises from the condition
shown above, and thereafter the carry-in side cannot move toward the front end unless it is confirmed that the carry-out
side is at the rear end.
5. Operation Using I/O Signals
Machine M stands by during the sequence of “Carry-out side drops → Carry-out side rises → Carry-out side moves
backward → Carry-out side is confirmed to be at the rear end → Carry-in side moves forward → Carry-in side is confirmed
to be at the front end → Carry-in side drops → Carry-in side rises.”
Because there are only two stop points, the up/down heights must also be aligned between the actuators.
z 3 Stop Points Combined with Zone Output Signals
Rear end Front end Front end Rear end
[Carry-out actuator] [Carry-in actuator]
Machine M
[Carry-out actuator]
Intermediate
point
Zone II
[Carry-in actuator]
Intermediate
point
Zone I
Machine M
If there are three stop points, the carry-in side can move to the intermediate point regardless of the condition of the
carry-out side. Also, a desired passing point can be set using a zone output signal. In the above example, when the Zone I
signal turns ON while the carry-out side is rising, Machine M becomes operable and the carry-out side can move backward.
When the Zone II signal turns ON, the carry-in side can move forward. As both actuators can move independently, the tact
time can be reduced.
Because there are three stop points, there is no need to align the up/down heights between the actuators and a desired
layout can be implemented.
Control is also simple. When the carry-out side is inside the contact range (the Zone II signal is OFF), the carry-in side is
moved to the intermediate point if currently at the top end with the chucks closed. If the Zone II signal turns ON during the
aforementioned movement, the command is switched to one that moves the carry-in side toward the front end. Since the
carry-in side moves all the way to the front end, the tact time can be further reduced.
76
(Reference) Timing Charts and Example of Ladder Sequence Circuit
Rear end move command
for carry-out side
Zone II
Intermediate point move
command for carry-in side
Front end move command
for carry-in side
Horizontal movement of
Stopped/standing by
carry-in side
Flat speed
5. Operation Using I/O Signals
Chuck
closed
Intermediate
point
Front endFront end
Machine M is processing.
Top endR2
Rear end move
ProcessingZone II
Automatic
operation
command for
carry-in side
Intermediate
point
The Zone II signal turns ON while
moving to the intermediate point.
Intermediate point
move command for
carry-in side
Intermediate point
Automatic
operation
move command for
carry-in side
77
5.4 Power-saving Modes at Standby Positions
One general characteristic of pulse motors is that their holding current in standstill state is greater than AC servo motors.
For this reason, in situations where the actuator remains standstill for a long time at a standby position, this controller provides
several modes to reduce power consumption in such standstill state as part of the controller’s energy-saving function.
Use these modes after confirming that they will not cause problems in any part of the system.
The respective modes can be used for effective power-saving in the applicable situations specified below. Each mode
provides different power-saving benefits, and is suitable for a different standstill condition.
The actuator is standing by while the servo is on after power on
In this case, you can select full servo control by Parameter No. 53 (Default standstill mode). Automatic servo-off cannot be
selected. If this parameter is set to “1,” “2” or “3” by mistake, the setting will be ignored. (The setting in the “Standstill mode”
field of the position table is ignored.)
The actuator is standing by upon completion of positioning to the target position set in the “Position” field under each
position number
In this case, you can select one of two modes depending on the value set in the “Standstill mode” field of the position table.
(The setting of Parameter No. 53 is ignored.)
[1] Full servo control
[2] Automatic servo-off
Meaning of the setting in the “Standstill mode” field of the position table and setting of Parameter No. 53:
5. Operation Using I/O Signals
All power-saving modes are disabled. (The actuator is completely stopped.) 0
Automatic servo-off mode. The delay time is defined by Parameter No. 36. 1
Automatic servo-off mode. The delay time is defined by Parameter No. 37. 2
Automatic servo-off mode. The delay time is defined by Parameter No. 38. 3
Full servo control mode 4
Setting
78
Full Servo Control Mode
The pulse motor is servo-controlled to reduce the holding current.
Although the specific level of current reduction varies in accordance with the actuator model, load condition, etc., generally
the holding current drops to around a half to one-fourth.
The servo remains on, so position deviation does not occur.
The actual holding current can be checked in the current monitor screen of the PC software.
Note that in a condition where external force is applied or depending on the stopped position, micro-vibration or noise may
occur.
Do not use this mode in applications where such micro-vibration or noise may be detrimental.
Automatic Servo-off Mode
The servo automatically turns off after elapse of a specified time following the completion of positioning. (Since no holding
current is required, power consumption decreases.)
When the PLC issues the next move command, the servo will turn on again and the actuator will start moving.
* Since the servo turns off temporarily, slight position deviation may occur.
Do not use this mode at a standby position where such position deviation may be detrimental.
Move command
Automatic servo-off mode
Servo status
Servo on
(The green LED blinks.)
5. Operation Using I/O Signals
Actuator movement
Target position
In the standard type, the positioning complete signals (PE0, PE1, PE2) turn OFF.
However, you can set the applicable parameter to keep these signals ON in conditions where allowing the positioning
complete signals to turn OFF will cause problems due to the sequence circuit of the PLC.
Setting of Parameter No. 39
(Positioning complete signal output mode)
0 [PEND] When the servo is off, the positioning complete signal turns OFF
unconditionally.
Even when the next move command is issued and the servo turns on again,
the signal will remain OFF because the actuator has already started moving
to the next target position.
1 [INP] Even when the servo is off, the positioning complete signal turns ON if the
current position is close enough to the target position, or specifically inside
the range corresponding to the value set in the “Positioning band” field of
the position table. The signal turns OFF if the current position is outside this
range.
(Note) The factory setting is “0.”
Positioning complete signal (PE0, PE1, PE2) state
Delay time after completion of positioning until
the servo turns off (sec)
This delay time is set by a parameter.
79
Warning: If the next move command is an incremental move command (via constant pitch feed), never use automatic
servo-off.
The current position may deviate slightly as the servo turns on.
Caution: In push-motion operation, both the full servo control mode and automatic servo-off mode are not effective if
the work has been contacted successfully.
They are effective when the actuator has missed the work.
As a basic rule of thumb, do not use either the full servo control mode or automatic servo-off mode in
push-motion operation.
5. Operation Using I/O Signals
80
5.5 Using Rotary Actuators in Multi-rotation Specification
Rotary actuators of multi-rotation specification models can be set to operate in the multi-rotation mode or
limited-rotation mode using a parameter.
5.5.1 How to Use
(1) Homing
When a homing command is issued, a signal of the limit switch located in the home direction is detected. Once a limit
switch signal is detected, the actuator reverses its direction. Thereafter, the actuator moves until a limit switch signal
is no longer detected, and then moves further by the distance specified in Parameter No. 22, “Home offset,” upon
which the homing is completed.
Absolute coordinate specification - 0.15° to 360.15°Absolute coordinate specification 0.00° to 359.99°
Relative coordinate specification - 360.15° to 360.15°Relative coordinate specification - 360.00° to 360.00°
Multi-rotation specification
(Index mode [Selected by parameter No. 79])
Note
Pay attention to the PIO pattern parameter for the following controllers.
Each controller does not support relative coordinate specification in the PIO pattern specified below:
[1] PCON-C/CG: PIO pattern = 5 (User parameter No. 25)
[2] PCON-CY: PIO pattern = 0 (User parameter No. 25)
• Rotational axes of simple absolute unit specification do not support the index mode. Accordingly, the multi-rotation
specification cannot be selected for these axes.
The parameters are classified into the following four types depending on their function:
Types:
a: Parameter relating to actuator stroke range
b: Parameter relating to actuator operating characteristics
c: Parameter relating to external interface
d: Servo gain adjustment
No. Type Symbol NameUnitFactory default
1 a ZONM Zone limit 1 + side mm Effective length of the actuator
2 a ZONL Zone limit 1 – side mm Effective length of the actuator
3 a LIMM Soft limit + side mm Effective length of the actuator
4 a LIML Soft limit – side mm Effective length of the actuator
5 a ORG Home direction [0: Reverse / 1: Forward]- (As specified at the time of order)
6 b PSWT Push-motion completion judgment time msec255
7 d PLG0 Servo gain number - Set individually in accordance with the actuator characteristics.
8 b VCMD Default speed mm/sec Set individually in accordance with the actuator characteristics.
9 b ACMD Default acceleration/deceleration G Set individually in accordance with the actuator characteristics.
10 b INP Default positioning band (in-position) mm 0.10
12 b SPOW
13 b ODPW Current-limiting value during homing % Set individually in accordance with the actuator characteristics.
16 c BRSL SIO communication speed bps 38400
6. Parameter Settings
17 c RTIM
18 B LS Home sensor input polarity - Set individually in accordance with the actuator characteristics.
21 c FPIO
22 a OFST Home offset mm Set individually in accordance with the actuator characteristics.
23 a ZNM2 Zone limit 2 + side mm Effective length of the actuator
24 a ZNL2 Zone limit 2 – side mm Effective length of the actuator
25 c IOPN PIO pattern selection - 0 [Proximity switch type]
28 b PHSP1
29 b PHSP2 Excited phase signal detection time msecSet individually in accordance with the actuator characteristics.
31 d VLPG Speed loop proportional gain - Set individually in accordance with the actuator characteristics.
32 d VLPT Speed loop integral gain - Set individually in accordance with the actuator characteristics.
33 d TRQF Torque filter time constant - Set individually in accordance with the actuator characteristics.
34 b PSHV Push speed mm/sec Set individually in accordance with the actuator characteristics.
35 b SAFV Safety speed mm/sec 100
36 b ASO1 Automatic servo-off delay time 1 sec 0
37 b ASO2 Automatic servo-off delay time 2 sec 0
38 b ASO3 Automatic servo-off delay time 3 sec 0
39 c FPIO
42 b FPIO Enable function [0: Enable / 1: Disable] - 1 [Disable]
43 b AIOF Home check sensor input polarity - (As specified at the time of order)
45 c SIVM Silent interval multiplication factor times0 [Multiplication factor disabled]
46 b OVRD Speed override % 100
53 b CTLF Default standstill mode - 0 [Complete stop]
77 b LEAD Ball screw lead - Set individually in accordance with the actuator characteristics.
78 b ATYP Axis operation type - Set individually in accordance with the actuator characteristics.
79 b ATYP Rotational axis mode selection - Set individually in accordance with the actuator characteristics.
80 b ATYP Shortcut selection for rotational axis - Set individually in accordance with the actuator characteristics.
83 b ETYP Absolute unit [0: Do not use / 1: Use] - Set individually in accordance with the actuator characteristics.
(Note) The parameter numbers are shown in the PC software, but not on the teaching pendant.
Missing numbers are not used and therefore skipped.
The classification symbols are provided for the sake of convenience and are not shown either in the PC software or on the
teaching pendant.
Current-limiting value at standstill after
positioning
Minimum delay time for slave transmitter
activation
Default direction of excited phase signal
detection [0: Reverse / 1: Forward]
Positioning complete signal output mode
[0: PEND / 1: INP]
% Set individually in accordance with the actuator characteristics.
msec5
- 0 [Enable]
- Set individually in accordance with the actuator characteristics.
- 0 [PEND]
82
6.2 Detail Explanation of Parameters
A
A
A
A
If you have changed any parameter, be sure to restart the controller via a software reset or reconnect the controller power.
6.2.1 Parameters Relating to Actuator Stroke Range
z Soft Limits (No.3/4 LIMM/LIML)
Set the + soft limit in parameter No. 3 and – soft limit in parameter No. 4.
Both parameters have been set to the effective actuator length at the factory. Change the parameter settings if necessary,
such as when an obstacle is present and collision between the actuator and obstacle must be prevented or when the actuator
must be operated beyond the effective length.
Exercise due caution when setting these parameters, as wrong settings will cause collision with the mechanical end.
The minimum setting unit is 0.01 mm.
(Note) To change these parameters, set values corresponding to positions that are 0.3 mm wider than the desired effective
range.
Example) Set the effective range to between 0 and 80 mm
If not specified by the user, the home direction is set to the motor side before shipment.
If you must change the home direction after the actuator has been assembled to your equipment, change the setting of
parameter No. 5.
Also change the parameters for home offset, soft limits and default direction of excited phase signal detection, if necessary.
Caution: Rod-type actuators do not permit reversing of the home direction.
83
z Home Offset (No.22 OFST)
Parameter No. 22 has been set to an optimal value at the factory so that the distance from the mechanical end to home will
remain constant.
The minimum setting unit is 0.01 mm.
This parameter can be adjusted in the following conditions:
[1] Align the actuator’s home with the mechanical home on the equipment after the actuator has been assembled to the
equipment.
[2] Set the home position again after reversing the factory-set home direction.
[3] Correct the minor position deviation that has generated after the actuator was replaced.
Caution: If you have changed the home offset, the soft limit parameters must also be reviewed.
z Zone Limits (1: No. 1/2 ZONM/ZONL 2: No. 23/24 ZNM2/ZNL2)
This parameter is not used with this controller. It applies to controllers of general-purpose and serial communication types.
If this parameter is to be used, set the range within which the zone output signal (ZONE1 or ZONE2) will turn ON.
The zone output signal turns ON when the current coordinate is between the (-) setting and (+) setting.
For the ZONE1 signal, set the positive-side coordinate in Parameter No. 1 and negative-side coordinate in Parameter No. 2.
For the ZONE2 signal, set the positive-side coordinate in Parameter No. 23 and negative-side coordinate in Parameter No. 24.
The minimum setting unit is 0.01 mm.
Example) On an actuator with a 300-mm stroke, ZONE1 is used as an intermediate point LS in a range of 100 to 200
6. Parameter Settings
mm, while ZONE2 is used as a simple yardstick in a range of 270 to 275 mm.
Parameter No. 1 (+ side): 200 Parameter No. 2 (– side): 100
Parameter No. 23 (+ side): 275 Parameter No. 24 (– side): 270
(Home)
ZONE1 turns ON.ZONE2 turns ON.
84
6.2.2Parameters Relating to Actuator Operating Characteristics
Default Speed (No.8 VCMD)
The factory setting is the rated speed of the actuator.
This value is recognized as speed data corresponding to each position number when a target position is entered for that
position in the position table where speed is not yet entered.
To decrease the default speed from the rated speed, change the value set in Parameter No. 8.
Default Acceleration/Deceleration (No.9 ACMD)
The factory setting is the rated acceleration/deceleration of the actuator.
This value is recognized as acceleration/deceleration data corresponding to each position number when a target position is
entered for that position in the position table where acceleration/deceleration is not yet entered.
To decrease the default acceleration/deceleration from the rated acceleration/deceleration, change the value set in Parameter
No. 9.
Default Positioning Band (In-position) (No.10 INP)
The factory setting is “0.10” mm.
This value is recognized as positioning band data corresponding to each position number when a target position is entered for
that position in the position table where positioning band is not yet entered.
Increasing this parameter value causes the positioning complete signal to output more quickly. If necessary, change the value
set in Parameter No. 10.
Caution:For the positioning band, set the value greater than that of the encoder resolution.
Setting it smaller may cause a servo error.
Current-limiting Value during Homing (No.13 ODPW)
Before shipment, this parameter is set to a current level appropriate for the standard specification of the actuator.
Increasing this parameter value increases the homing torque.
This parameter need not be changed in normal conditions of use. However, if the actuator is used in vertical orientation and
the slide resistance increases due to the affixing method, load condition, etc., homing may complete before the correct
position. In this case, the value set in Parameter No. 13 must be increased.
(As a guide, the setting should not exceed 100% for the RXA type or 75% for all other types.)
6. Parameter Settings
Current-limiting Value at Standstill after Positioning (No.12 SPOW)
Before shipment, this parameter is set to a current level appropriate for the standard specification of the actuator.
Increasing this parameter value increases the holding torque.
This parameter need not be changed in normal conditions of use. If the actuator receives large external force while standing
still, however, hunting will occur. In this case, the value set in Parameter No. 12 must be increased.
(As a guide, the setting should not exceed 100% for the RA3C/RGD3C type or 75% for all other types.)
Speed Override (No.46 OVRD)
Use this parameter if you want to move the actuator at a slow speed to prevent danger during test operation.
When issuing move commands from the PLC, the movement speed set in the “Speed” field of the position table can be
overridden based on the value set in Parameter No. 46.
Actual movement speed = [Speed set in the position table] x [Value of Parameter No. 46]
Example)Value in the “Speed” field of the position table500 (mm/s)
Value of Parameter No. 4620 (%)
Under the above settings, the actual movement speed becomes 100 mm/s.
The minimum setting unit is 1 (%), and the input range is 1 to 100 (%). The factory setting is “100” (%).
(Note)This function is not effective on move commands issued from the PC or teaching pendant.
100
85
z Default Direction of Excited Phase Signal Detection (No.28 PHSP)
The excited phase is detected when the servo is turned on for the first time after turning on the power. This parameter defines
the direction of this detection.
This parameter need not be changed in normal conditions of use. However, if the actuator is contacting a mechanical end or
any obstacle when the power is turned on and cannot be moved by hand, change the direction of detection to one in which the
motor can be driven easily.
To do this, set the value of Parameter No. 28 to either “0” or “1.” If the direction of detection is to be the same as the home
direction, specify the same value currently set in Parameter No. 5, “Home direction.”
To set the direction opposite to the home direction, specify the value different from the one currently set in Parameter No. 5,
“Home direction.”
(Example 1) The power is turned on when the slider is contacting the bottom mechanical end in a configuration where the
motor is positioned at the top.
6. Parameter Settings
(Example 2) The power is turned on when the slider is contacting the bottom mechanical end in a configuration where the
motor is positioned at the bottom.
Top
Bottom
Top
Bottom
Home direction
Home position
Set to the same value.
Direction of excited
phase signal detection
The slider is contacting the bottom mechanical end.
Direction of excited
phase signal detection
Home position
The slider is contacting the bottom mechanical end.
Home direction
Set to different values.
z Excited Phase Signal Detection Time (No.29 PHSP)
The excited phase is detected when the servo is turned on for the first time after turning on the power. This parameter defines
the time of this detection.
Before shipment, this parameter is set to a detection time appropriate for the standard specification of the actuator, and thus
the setting need not be changed in normal conditions of use.
Should an excitation detection error or abnormal operation occur when the servo is turned on for the first time after turning on
the power, you can try changing the detection time set in Parameter No. 29 as a possible countermeasure.
Before changing this parameter, contact IAI.
z Safety Speed (No.35 SAFV)
This parameter defines the feed speed during manual operation.
The factory setting is “100” [mm/sec].
To change the speed, set an optimal value in Parameter No. 35.
Since the maximum speed is limited to 250 mm/sec, set the safety speed to below this level.
86
z Automatic Servo-off Delay Time (No.36 ASO1/ No.37 ASO2/ No.38 ASO3)
This parameter defines the delay time after positioning is completed until the servo turns off automatically when the “Standstill
mode” field in the position table is set to any value from “1” to “3” (the automatic servo-off mode is enabled) or the setting of
Parameter No. 53 (Default standstill mode) is set to any value from “1” to “3” (the automatic servo-off mode is enabled).
Meaning of set value: If this parameter is set to “1,” T takes the value of Parameter No. 36.
If this parameter is set to “2,” T takes the value of Parameter No. 37.
If this parameter is set to “3,” T takes the value of Parameter No. 38.
The factory setting is “0” [sec].
Move command
Automatic servo-off mode
(The green LED blinks.)
Servo status
Servo on
Actuator movement
6. Parameter Settings
Target position
Delay time after completion of positioning until
the servo turns off (sec)
z Default Standstill Mode (No.53 CTLF)
This parameter defines the power-saving mode to be applied when the standby time while the servo is on is long after power
on.
You can select the full servo control mode.
* Even when the automatic servo-off mode is selected, the selection will be ignored.
In Parameter No. 53, define whether or not to implement power-saving.
Setting
All power-saving modes are disabled 0
Automatic servo-off mode. The delay time is defined by Parameter No. 36. 1
Automatic servo-off mode. The delay time is defined by Parameter No. 37. 2
Automatic servo-off mode. The delay time is defined by Parameter No. 38. 3
Full servo control mode 4
The factory setting is “0” [Disable].
Auto servo-off mode
The servo automatically turns off after elapse of a specified time following the completion of positioning. (Since no holding
current is required, power consumption decreases.)
When the PLC issues the next move command, the servo will turn on again and the actuator will start moving.
Refer to the timing chart above.
Full servo control mode
The pulse motor is servo-controlled to reduce the holding current.
Although the specific level of current reduction varies in accordance with the actuator model, load condition, etc., generally
the holding current drops to around a half to one-fourth.
The servo remains on, so position deviation does not occur.
The actual holding current can be checked in the current monitor screen of the PC software.
87
z Push Speed (No.34 PSHV)
This parameter defines the push speed that applies after the target position has been reached in push-motion operation.
Before shipment, a default speed appropriate for the actuator characteristics is set.
Depending on the material and shape of the work, etc., set an appropriate speed in Parameter No. 34.
Note that, while the maximum speed varies according to the actuator, it should not exceed 20 mm/sec even with the
high-speed type. Set a push speed below the maximum speed.
Caution: It is recommended that the push speed be set to 5 mm/sec or above to reduce the effect of varying push
z Push-motion Completion Judgment Time (No.6 PSWT)
6. Parameter Settings
This parameter is used as a condition for determining if the work is contacted and push-motion operation is completed.
Specifically, push-motion operation is deemed complete if the current-limiting value set in the position table has been
maintained for the time set in Parameter No. 6.
Depending on the material and shape of the work, etc., set an optimal value in combination with the current-limiting value.
The minimum setting unit is 1 msec, and the maximum value is 9,999 msec. The factory setting is “255” [msec].
(Note) The following shows a case in which the work has shifted and current has changed during push-motion completion
judgment. In this example, the judgment time is set to 255 msec.
Speed
force.
Push current
Push speed
Work
Positioning band
Start position Target position Counting starts
Count to 200
Decrement to 180
Count to 255
Completion of push-motion operation is determined.
If the push current is maintained for 200 msec and then drops for 20 msec thereafter, the counter is decremented by 20. Upon
recovery of the push current, counting resumes from 180. If the push current is maintained for 75 msec, the counter will have
counted up to 255 and thus completion of push-motion operation is determined.
In this case, the judgment requires a total of 295 msec.
88
z Enable Function (No.42 FPIO)
Whether to enable or disable the deadman switch function on the ANSI-type teaching pendant is set in Parameter No. 42.
* The ANSI-type teaching pendant is currently under development.
Setting
Enable (Use) 0
Disable (Do not use) 1
The factory setting is “1” [Disable].
z Home Check Sensor Input Polarity (No.43 AIOF)
The home check sensor is not included in the standard specification, but it can be installed as an option.
This parameter need not be changed in normal conditions of use. To change the factory-set mode, change the value of
Parameter No. 43.
Definition of settings: 0 (Standard specification; no sensor)
1 (Use the home check sensor, and the sensor polarity conforms to “contact a” logic)
2 (Use the home check sensor, and the sensor polarity conforms to “contact b” logic)
[Explanation of operation]
[1] When a homing command is issued, the actuator moves until it contacts a mechanical end, upon which a home check
sensor signal is detected.
[2] Next, the actuator reverses its direction and stops at the home position.
[3] If the home check sensor signal has changed its signal state, the controller determines that the homing was completed
successfully. If the signal state has not changed, the controller recognizes “position deviation.” Accordingly, the controller
generates a “home sensor non-detection error” and outputs an alarm signal.
6. Parameter Settings
Mechanical end
Home check sensor
Power input position
Home position
89
z Home Sensor Input Polarity (No. 18, LS)
This parameter is supported by the rotational axes of RCP2-RTB/RTC types adopting the home sensor method.
Definition of settings: 0 (Sensor not used)
1 (Sensor polarity of contact a)
2 (Sensor polarity of contact b)
z Ball Screw Lead (No. 77, LEAD)
This parameter defines the ball screw lead.
Before shipment, a default value appropriate for the actuator characteristics is set.
z Axis Operation Type (No. 78, ATYP)
This parameter defines the type of the actuator used.
Definition of settings: 0 (Linear axis)
1 (Rotational axis)
z Rotational Axis Mode Selection (No. 79, ATYP)
If the axis operation type (No. 78) is set to “Rotational axis,” selecting the index mode fixes the current value to within a
range of 0 to 359.99. If the index mode is selected, short-cut control is enabled.
Definition of settings: 0 (Normal mode)
1 (Index mode)
6. Parameter Settings
Note: Push-motion operation cannot be performed in the index mode. Even if data is set in the “Push” field of the
position data, in the index mode the data becomes invalid and the actuator moves as normal. Also in the index
mode, the positioning band corresponds to the default positioning band set by a parameter.
90
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