Inovance Easy521 User manual

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‑1‑
Preface
■ Introduction
The Easy521/Easy522/Easy523 series PLC, the new generation of small PLC developed
by Inovance, supports network switchover through two network ports and allows
process packaging and reuse through FB/FC function. With RS485, Ethernet, and
EtherCAT, a multi‑layer network communication can be realized through this PLC,
with 16 modules extendable. RS485/RS232/CAN/DI/DO/AI/AO/RTC clock/TF card
functions can also be available through the extension card.
This guide describes installation and wiring of the PLC, including product information,
mechanical installation, and electrical installation.
■ Standards compliance
The following table lists the certifications, directives, and standards that the product
may comply with. For details about the certifications compliant with, see the
certification marks on the product nameplate.
Certification Directive Standards compliance
CE certification EMC Directive 2014/30/EU 24 VDC products:
EN 61131‑2
220 VAC products:
EN 61131‑2
EN 61000‑3‑2
EN 61000‑3‑3
Low Voltage
Directive (LVD)
2014/35/EU EN 61010‑1
EN 61010‑2‑201
RoHS Directive 2011/65/EU
amended by (EU)
2015/863
EN IEC 63000
UL/cUL certification ‑ UL 61010‑1
UL 61010‑2‑201
UL 61010‑2‑030
CAN/CSA‑C22.2 No. 61010‑1
CSA C22.2 NO. 61010‑2‑201
CSA C22.2 NO. 61010‑2‑030

‑2‑
Certification Directive Standards compliance
KCC certification ‑ ‑
EAC certification ‑ ‑
■ More Documents
Document Name Data Code Description
GE20 Series Extension Card
User Guide
PS00006443 Provides product information,
installation and wiring, programming
examples and for GE20 series
extension card.
■ Revision history
Date Version Revision
March 2023 A02 Updated DIN rail mounting hook diagram
and product specifications.
October 2022 A01 ●Added CAN communication function.
●Made minor corrections.
August 2022 A00 First release
■ Document acquisition
This guide is not delivered along with the product. You can download the PDF version
in the following means:
●Log in to Inovance's website (
www.inovance.com
), choose Support > Download,
search by keyword, and then download the PDF file.
●Scan the QR code on the product with your mobile phone.
■ Warranty
Inovance provides an 18‑month warranty to the equipment from the date of shipment
(subject to the barcode on the product) for failure or damage that occurs during
normal use. If otherwise agreed upon, the agreed terms and conditions shall prevail.
When the warranty period expires, reasonable maintenance fee will be charged.
The warranty does not cover any damage caused by:
●Operations not following instructions in the user guide
●Fire, flood, and abnormal voltage

‑3‑
●Unintended use
●Improper use outside the designed scope of application
●Force majeure (such as natural disaster, earthquake, and lightning strike) and the
secondary damage caused thereof
The maintenance fee is charged according to the latest Maintenance Price List of
Inovance. If otherwise agreed upon, the agreed terms and conditions shall prevail.
For details, see Product Warranty Card.

‑4‑
Fundamental Safety Instructions
■ Safety Disclaimer
●This chapter explains the safety precautions that need to be paid attention to
when using this product correctly. Before operating the equipment, read through
the guide and comprehend all the safety instructions. To ensure the safety of
humans and equipment, follow the signs on the equipment and all the safety
instructions in this user guide. Failure to comply may result in severe personal
injuries or even death or equipment damage.
●The DANGER, WARNING and NOTICE messages in the user guide does not cover all
the safety risks.
●Use this product in environments meeting the design and specification
requirements; otherwise, a fault may occur. Noncompliance‑caused malfunction
or damage to parts are not covered in product quality warranty.
●Inovance shall take no responsibility for any personal injuries or property damage
caused by improper usage.
■ Safety Levels and Definitions
Indicates that failure to comply with the notice can result in death
or severe personal injuries.
Indicates that failure to comply with the notice may result in death
or severe personal injuries.
Indicates that failure to comply with the notice may result in
minor or moderate personal injuries or equipment damage.
■ Safety Precautions
●Product illustrations in the user guide are sometimes shown without covers or
protective guards. Remember to install the covers or protective guards as
specified first, and then perform operations in accordance with the instructions.
●Product illustrations in this guide are for reference only. Actual products may vary.

‑5‑
Unpacking
●Do not install the equipment if you find any sign of damage, rust, or prior use on the
equipment or accessories.
●Do not install the equipment if you find any sign of water seepage or missing or damaged
components.
●Do not install the equipment if you find the packing list does not conform to the
equipment you received.
●Check whether the packing is intact and whether there is any sign of damage, water
seepage, dampness, and deformation.
●Unpack the package by following the unpacking sequence. Do not strike the package
violently.
●Check whether there is any sign of damage or rust on the surfaces of the equipment and
accessories.
●Check whether the package contents are consistent with the packing list.
Storage and transportation
●Handle the equipment with care during transportation and mind your steps to prevent
personal injuries or equipment damage.
●When carrying the equipment with bare hands, hold the equipment casing firmly with
care to prevent parts from falling. Failure to comply may result in personal injuries.
●Store and transport this product in strict accordance with the storage and transportation
requirements. Failure to comply may result in damage to the product.
●Do not store or transport the equipment in environments exposed to water splash, rain,
direct sunlight, strong electric field, strong magnetic field, and strong vibration.
●Avoid storing this product for more than three months. Long‑term storage requires
stricter protection and necessary inspections.
●Pack the equipment strictly before transportation. Use a sealed box for long‑distance
transportation.
●Never transport the equipment with other equipment or materials that may harm or
have negative impacts on this equipment.

‑6‑
Installation
●Installation must be carried out by the specialists who have received the necessary
electrical training and understood enough electrical knowledge. Ensure no
unprofessional person has access to the equipment.
●Read through the guide and safety instructions before installation.
●Do not install this equipment in places with strong electric or magnetic fields.
●Before installation, ensure that the installation position has sufficient mechanical
strength to support the weight of the device. Failure to comply will result in a mechanical
danger.
●To avoid electric shock, do not wear loose clothes or accessories.
●When this equipment is installed in a cabinet or final equipment, use a cooling device
(such as a fan or air conditioner) to cool the environment down to the required
temperature. Failure to comply may result in equipment over‑temperature or a fire.
●Do not retrofit this equipment.
●Do not fiddle with the bolts used to fix equipment components or the bolts marked in
red.
●When this product is installed in a cabinet or terminal device, protection measures such
as a fireproof enclosure, an electrical enclosure, or a mechanical enclosure must be
provided. The IP rating must meet IEC standards and local laws and regulations.
●Before installing devices with strong electromagnetic interference, such as a transformer,
install a shielding device for the equipment to prevent malfunction.
●Install the equipment onto flame retardant materials, such as metal. Keep the equipment
away from combustible objects. Failure to comply will result in a fire.

‑7‑
●During installation, use a piece of cloth or paper to cover the top of the product to
prevent metal chippings, oil, and water from entering into the product when drilling
holes. Failure to comply will cause product malfunctions. After installation, remove the
cloth or paper for effective ventilation and cooling.
●If the device running at a constant speed begins to run at variable speeds, resonance
may occur. In this case, install the vibration‑proof rubber under the motor frame or use
the vibration suppression function to reduce resonance.
Wiring
●Only professionals are allowed to perform installation, wiring, maintenance, inspection
or parts replacement on the equipment.
●Before wiring, cut off all the power supplies of the equipment. Wait as specified on the
product warning sign before further operations because residual voltage exists after
power‑off. Measure the DC voltage of the main circuit and make sure that it is below the
safety voltage. Failure to comply will result in an electric shock.
●Never perform wiring, remove the product cover, or contact the PCB at power‑on. Failure
to comply will result in an electric shock.
●Check that the equipment is grounded properly. Failure to comply will result in an
electric shock.Separate grounding or single‑point grounding, other than common
grounding, is recommended.

‑8‑
●Do not connect the input power supply to the output end of the equipment. Failure to
comply can result in equipment damage or even a fire.
●When connecting a drive to the motor, make sure the phase sequence of the drive and
motor are consistent to prevent motor reverse rotation.
●Cables used for wiring must meet cross sectional area and shielding requirements. The
shield of the cable must be reliably grounded at one end.
●Ensure that all cables are connected correctly. Cable sheath is not damaged, and no
screw or washer is left inside the equipment. Otherwise, electric shock or equipment
damage may occur.
●During wiring, follow the proper electrostatic discharge (ESD) procedure and wear an
antistatic wrist strap. Failure to comply can result in damage to the equipment or
internal circuits.
●In wiring the control circuit, use shielded twisted pair cable and connect the shield to the
PE terminal. Otherwise, the equipment may not function properly.
Power-on
●Before power‑on, check that the equipment is installed properly, the wiring is secure and
the motor can be restarted.
●Before power‑on, check that the power supply meets equipment requirements to
prevent equipment damage or even a fire.
●After power‑on, do not open the cabinet door or protective cover of the equipment. Do
not touch any wiring terminals, or remove any part of the equipment at power‑on.
Failure to comply will result in an electric shock.