Omron 3G3AX-PG User manual

Cat. No. I564-E1-01
USER’S MANUAL
3G3AX-PG
Encorder Feedback Board

1
Introduction
Introduction
Thank you for choosing the 3G3AX-PG Board. This User's Manual (hereinafter called “this manual”)
describes the parameter setting methods required for installation/wiring and operation of the
3G3AX-PG model, as well as troubleshooting and inspection methods.
zThis manual should be delivered to the actual end user of the product.
zAfter reading this manual, keep it handy for future reference.
zThis manual describes the specifications and functions of the product as well as the relations
between them. You should assume that anything not described in this manual is not possible with
the product.
zIntended readers
This manual is intended for:
Those with knowledge of electrical systems (qualified electrical engineers or the equivalent), and
also in charge of:
- Introducing the control equipment
- Designing the control system
- Installing and/or connecting the control equipment
- Field management

2
Read and Understand This Manual
Read and Understand This Manual
Please read and understand this manual before using the product. Please consult your OMRON representative
if you have any questions or comments.
Warranty and Limitations of Liability
WARRANTY
OMRON's exclusive warranty is that the products are free from defects in materials and workmanship for a
period of one year (or other period if specified) from date of sale by OMRON.
OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, REGARDING
NON-INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR PARTICULAR PURPOSE OF THE
PRODUCTS. ANY BUYER OR USER ACKNOWLEDGES THAT THE BUYER OR USER ALONE HAS
DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR
INTENDED USE. OMRON DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED.
LIMITATIONS OF LIABILITY
OMRON SHALL NOT BE RESPONSIBLE FOR SPECIAL, INDIRECT, OR CONSEQUENTIAL
DAMAGES, LOSS OF PROFITS OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE
PRODUCTS, WHETHER SUCH CLAIM IS BASED ON CONTRACT, WARRANTY, NEGLIGENCE, OR
STRICT LIABILITY.
In no event shall the responsibility of OMRON for any act exceed the individual price of the product on
which liability is asserted.
IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY, REPAIR, OR OTHER CLAIMS
REGARDING THE PRODUCTS UNLESS OMRON'S ANALYSIS CONFIRMS THAT THE PRODUCTS
WERE PROPERLY HANDLED, STORED, INSTALLED, AND MAINTAINED AND NOT SUBJECT TO
CONTAMINATION, ABUSE, MISUSE, OR INAPPROPRIATE MODIFICATION OR REPAIR.

3
Read and Understand This Manual
Application Considerations
SUITABILITY FOR USE
OMRON shall not be responsible for conformity with any standards, codes, or regulations that apply to
the combination of products in the customer's application or use of the products.
At the customer's request, OMRON will provide applicable third party certification documents identifying
ratings and limitations of use that apply to the products. This information by itself is not sufficient for a
complete determination of the suitability of the products in combination with the end product, machine,
system, or other application or use.
The following are some examples of applications for which particular attention must be given. This is not
intended to be an exhaustive list of all possible uses of the products, nor is it intended to imply that the
uses listed may be suitable for the products:
• Outdoor use, uses involving potential chemical contamination or electrical interference, or conditions
or uses not described in this manual.
• Nuclear energy control systems, combustion systems, railroad systems, aviation systems, medical
equipment, amusement machines, vehicles, safety equipment, and installations subject to separate
industry or government regulations.
• Systems, machines, and equipment that could present a risk to life or property.
Please know and observe all prohibitions of use applicable to the products.
NEVER USE THE PRODUCTS FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR
PROPERTY WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO
ADDRESS THE RISKS, AND THAT THE OMRON PRODUCTS ARE PROPERLY RATED AND
INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM.
PROGRAMMABLE PRODUCTS
OMRON shall not be responsible for the user's programming of a programmable product, or any
consequence thereof.

4
Read and Understand This Manual
Disclaimers
CHANGE IN SPECIFICATIONS
Product specifications and accessories may be changed at any time based on improvements and other
reasons.
It is our practice to change model numbers when published ratings or features are changed, or when
significant construction changes are made. However, some specifications of the products may be
changed without any notice. When in doubt, special model numbers may be assigned to fix or establish
key specifications for your application on your request. Please consult with your OMRON representative
at any time to confirm actual specifications of purchased products.
DIMENSIONS AND WEIGHTS
Dimensions and weights are nominal and are not to be used for manufacturing purposes, even when
tolerances are shown.
PERFORMANCE DATA
Performance data given in this manual is provided as a guide for the user in determining suitability and
does not constitute a warranty. It may represent the result of OMRON's test conditions, and the users
must correlate it to actual application requirements. Actual performance is subject to the OMRON
Warranty and Limitations of Liability.
ERRORS AND OMISSIONS
The information in this manual has been carefully checked and is believed to be accurate; however, no
responsibility is assumed for clerical, typographical, or proofreading errors, or omissions.

5
Safety Precautions
Safety Precautions
Indications and Meanings of Safety Information
In this user’s manual, the following precautions and signal words are used to provide information to ensure the
safe use of the 3G3AX-PG Board.
The information provided here is vital to safety. Strictly observe the precautions provided.
Meanings of Signal Words
Alert Symbols in This Document
Indicates an imminently hazardous situation which, if not avoided,
is likely to result in serious injury or may result in death. Additionally
there may be severe property damage.
Indicates a potentially hazardous situation which, if not avoided,
may result in minor or moderate injury, or in property damage.
WARNING
CAUTION
Turn off the power supply and implement wiring correctly.
Not doing so may result in a serious injury due to an electric shock.
Wiring work must be carried out only by qualified personnel.
Not doing so may result in a serious injury due to an electric shock.
Do not touch the surface of the PG Board or terminals, and do not remove the encoder wire or the
PG Board while the power is being supplied.
Doing so may result in a serious injury due to an electric shock or fire.
Turn off the input power of the Inverter and wait for more than 10 minutes before putting on or taking
off the PG Board, changing the setting / wiring or conducting inspection.
Not doing so may result in a serious injury due to an electric shock.
Place covers on the openings or take other precautions to make sure that no metal objects such as
cutting bits or lead wire scraps go inside when installing the PG Board and wiring.
Install a stop motion device to ensure safety. Not doing so might result in a minor injury.
Do not dismantle, repair or modify the product. Doing so may result in an injury.
WARNING
CAUTION

6
Precautions for Safe Use
Precautions for Safe Use
Installation and Storage
Do not store or use the product in the following places.
• Locations subject to direct sunlight.
• Locations subject to ambient temperature exceeding the specifications.
• Locations subject to relative humidity exceeding the specifications.
• Locations subject to condensation due to severe temperature fluctuations.
• Locations subject to corrosive or flammable gases.
• Locations subject to exposure to combustibles.
• Locations subject to dust (especially iron dust) or salt.
• Locations subject to exposure to water, oil, or chemicals.
• Locations subject to shock or vibration.
Transportation, Installation, and Wiring
Observe the following instructions during transportation, installation, and wiring.
• Do not drop or apply a strong impact on the product. Doing so may result in damaged parts or
malfunction.
• Connect the PG Board to the Inverter tightly with the provided fixing screws.
Tighten securely the terminal screws for the encoder wire on the PG Board.
Tightening torque : 0.9 N⋅m (1.0 N⋅m max.)
• Be sure to use the provided ferrite cores. Fix the ferrite cores on the wire or take appropriate
measures so that the ferrite cores will not cover the shield coating of the wire.
Not doing so may cause the Inverter to malfunction.
• Fix the shielding wire properly or take appropriate measures so that the wire will not be weighed
down.
Not doing so may result in shielding wire breakage due to the weight of the ferrite cores.
• Check whether the motor rotation direction is correct, and unusual sound or vibration occurs
during operation.
Maintenance and Inspection
Be sure to confirm safety before conducting maintenance, inspection or parts replacement.

7
Precautions for Correct Use
Precautions for Correct Use
Rated Voltage
Confirm that the power voltage for the encoder is the same as the rated voltage (+5 V DC) of the
product.
Product Disposal
Comply with the local ordinance and regulations when disposing of the product.

8
Checking Before Unpacking
Checking Before Unpacking
Checking the Product
On delivery, be sure to check that the delivered product is the 3G3AX-PG Board that you ordered.
Should you find any problems with the product, immediately contact your nearest local sales
representative or OMRON sales office.
Checking the Nameplate
Checking the Model
Checking the Accessories
Accessories of the 3G3AX-PG Board are shown below.
• Fixing screws (M3 x 8) : 2
• Ferrite cores : 2
DDC
PG01 A
19208
Nameplate
3G3AX-PG01
PG Board
Serial numbe
r