Inovance GL20-0808ETN User manual

*19012116A00*

‑1‑
Preface
■ About This Guide
GL20‑0808ETN expansion module features 8‑channel digital input and 8‑channel NPN
transistor output, and can be used together with Easy series PLC and GL20 series
communication interface modules such as GL20‑RTU‑ECT module.
This guide describes the mechanical installation, electrical installation and
programming examples of the product.
■ Standard Compliance
The following table lists the certifications, directives, and standards that the product
may comply with. For details about the acquired certificates, see the certification
marks on the product nameplate.
Certifica‑
tion
Directive Standard Compliance
CE
certifica‑
tion
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
LVD directive 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
certifica‑
tion
‑ 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‑
Certifica‑
tion
Directive Standard Compliance
KCC
Certifica‑
tion
‑ ‑
EAC
certifica‑
tion
‑ ‑
■ More Data
Data Name Data Code Description
GL20‑RTU‑ECT
Communication
Interface Module User
Guide
PS00004985 This guide describes the installation,
wiring and more of the product.
■ Revision History
Date Version Description
October 2022 A00 First release.
■ How to Obtain
This guide is not delivered with the product. You can obtain the PDF version by the
following method:
●Log in to Inovance's website (
http://en.inovance.cn/
), choose Support >
Download, search by keyword, and then download the PDF file.
●Scan the QR code on the product with your mobile phone.
■ Warranty Agreement
The warranty period of the product is 18 months as of the date of manufacture (refer
to the barcode on the equipment). If otherwise agreed upon, the agreed terms and
conditions shall prevail. After 18 months, a proper maintenance fee is charged.
Within the 18‑month warranty period, a reasonable repair fee will be charged for
damages caused by the following:
●Operations not following the user instructions
●Fire, flood, or abnormal voltage

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●Use of the product for non‑recommended functions
●Use of the product outside the scope of intended use
●Force majeure such as natural disasters, earthquake, lightning strike
The maintenance fee is charged according to the latest Price List of Inovance. If
otherwise agreed upon, the agreed terms and conditions shall prevail.
For details, see Product Warranty Card.

‑4‑
General Safety Instructions
■ Safety Precautions
1. Before installing, using, and maintaining this equipment, read the safety
information and precautions thoroughly, and comply with them during operations.
2. To ensure the safety of humans and equipment, follow the signs on the equipment
and all the safety instructions in this user guide.
3. "CAUTION", "WARNING", and "DANGER" items in the guide only indicate some of
the precautions that need to be followed; they just supplement the safety
precautions.
4. Use this equipment according to the designated environment requirements.
Damage caused by improper use is not covered by warranty.
5. Inovance shall take no responsibility for any personal injuries or property damage
caused by improper use.
■ Safety Levels and Definitions
: Indicates that failure to comply with the notice will result in severe
personal injuries or even death.
: Indicates that failure to comply with the notice may result in severe
personal injuries or even death.
: Indicates that failure to comply with the notice may result in minor or
moderate personal injuries or damage to the equipment. Please keep this guide well
so that it can be read when necessary and forward this guide to the end user.
During Control System Design
●Provide a safety circuit outside the PLC so that the control system can still work safely
once external power failure or PLC fault occurs.
●Add a fuse or circuit breaker because the module may smoke or catch fire due to long‑
time overcurrent caused by operation above rated current or load short‑circuit.

‑5‑
●An emergency stop circuit, a protection circuit, a forward/reverse operation interlocked
circuit, and a upper position limit and lower position limit interlocked circuit must be set
in the external circuits of PLC to prevent damage to the machine.
●To ensure safe operation, for the output signals that may cause critical accidents, design
external protection circuit and safety mechanism;
●Once PLC CPU detects abnormality in the system , all outputs may be closed; however,
when a fault occurs in the controller circuit, the output may not be under control.
Therefore, it is necessary to design an appropriate external control circuit to ensure
normal operation;
●If the PLC output units such as relays or transistors are damaged, the output may fail to
switch between ON and OFF states according to the commands;
●The PLC is designed to be used in indoor electrical environment (overvoltage category II).
The power supply must have a system‑level lightning protection device, assuring that
overvoltage due to lightning shock cannot be applied to the PLC power supply input
terminals, signal input terminals and output terminals and so forth, so as to avoid
damage to the equipment.
Installation
●Installation must be carried out by the specialists who have received the necessary
electrical training and understood enough electrical knowledge.
●Disconnect all external power supplies of the system before removing/installing the
module. Failure to do so may result in electric shock, module fault or malfunction.
●Do not use the PLC where there are dust, oil smoke, conductive dust, corrosive or
combustible gases, or exposed to high temperature, condensation, wind & rain, or
subject to vibration and impact. Electric shock, fire and malfunction may also result in
damage or deterioration to the product.
●The PLC is open‑type equipment that must be installed in a control cabinet with lock
(cabinet housing protection > IP20). Only the personnel who have received the necessary
electrical training and understood enough electrical knowledge can open the cabinet.

‑6‑
●Prevent metal filings and wire ends from dropping into ventilation holes of the PLC
during installation. Failure to comply may result in fire, fault and malfunction.
●Ensure there are no foreign matters on ventilation surface. Failure to comply may result
in poor ventilation, which may cause fire, fault and malfunction.
●Ensure the module is connected to the respective connector securely and hook the
module firmly. Improper installation may result in malfunction, fault or fall‑off.
Wiring
●Wiring must be carried out by personnel who have received the necessary electrical
training and understood enough electrical knowledge.
●Disconnect all external power supplies of the system before wiring. Failure to comply
may result in electric shock, module fault or malfunction.
●Perform good insulation on terminals so that insulation distance between cables will not
reduce after cables are connected to terminals. Failure to comply may result in electric
shock or damage to the equipment.
●To avoid electric shock, cut off the power supply before connecting the product to the
power supply.
●The power supply must meet the specifications provided in the user guide. If the power
input is not within the specified range, the product may be damaged. Therefore, check
regularly that the DC power provided by the switching‑mode power supply unit is stable.
During Operation and Maintenance

‑7‑
●Maintenance & inspection must be carried out by personnel who have the necessary
electrical training and experience.
●Do not touch the terminals while the power is on. Failure to comply may result in electric
shock or malfunction.
●Disconnect all external power supplies of the system before cleaning the module. Failure
to comply may result in electric shock.
●Disconnect all external power supplies of the system before removing the module or
connecting/removing the communication wirings. Failure to comply may result in electric
shock or malfunction.
Safety Recommendations
●On‑site manual devices or other backup means must be equipped in the position where
the operator directly touches the mechanical parts, such as loading and unloading
mechanical tools, or the position where the machine runs automatically. The manual
devices and backup means, which can start or interrupt automatic operations of the
system, must be independent of the programmable controller.
●If you need to modify the program while the system is running, use the lock function or
other protective measures. Ensure that only authorized personnel can make the
necessary modifications.
Disposal
●Treat the scrapped product as industrial waste. Dispose of the battery according to local
laws and regulations.
●Recycle retired equipment by observing industry waste disposal standards to avoid
environmental pollution.

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1 Product Information
1.1 Model Number and Nameplate
①Product Information
GL: General local
module
③I/O Points
8 inputs
⑤Module Type:
Logic I/O expansion
module
②Serial Number
20: 20 series module
④I/O Points
8 outputs
⑥Output Type
Transistor output
(sinking)
Based on the above description of model number and nameplate, the relevant
ordering data of this product is described in the following table.

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Model Description Product Code Applicable Model
GL20‑0808ETN GL20 series module with 8‑
channel digital input and 8‑
channel NPN transistor output
01440339 GL20 communication
interface module, Easy
series
1.2 Components

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No. Name Description
①Signal
indicators
PR
(POWER
+RUN)
Power / running
indicator
Yellow
green
●ON: The module is in
normal operation.
●Flashing quickly: The
module is addressed
successfully.
●Flashing slowly: The
module is powered on
but not addressed.
●OFF: The module is
not powered on or is
faulty.
ERR Error indicator Red Module fault
②I/O signal
indicator
00 to 07 I/O signal indicator Yellow
green
●ON: Input/Output
active
●OFF: Input/Output
inactive
③Color
identification
Red: Digital output Orange: Analog output
Gray: Digital input Green: Analog input
White:
Communication Blue: Other module
④I/O terminal / 8 inputs and 8
outputs
/ For detailed definitions,
see "
3.2 Terminal
Definition
" on page 19
Note
●Flashing quickly: on for 200 ms followed by off for 200 ms.
●Flashing slowly: on for 200 ms followed by off for 1000 ms.

‑11‑
1.3 Specifications
■ Power supply specifications
Item Specification
Rated bus input voltage 5 VDC (4.75 VDC to 5.25 VDC)
Rated bus input current 85 mA (typical@5 V)
Rated terminal input voltage 24 VDC (20.4 VDC to 28.8 VDC)
Rated terminal input current 50 mA (typical@24 V)
Rated terminal output voltage N/A
Rated terminal output current N/A
Hot swap Not supported
■ Input specifications
Item Specification
Input type Digital input
Input mode Sinking
Input channels 8
Input voltage class 24 VDC±10% (21.6 VDC to 26.4 VDC)
Input current (typical) 4 mA (typical@24 V)
ON voltage 15 VDC
OFF voltage <5 VDC
ON/OFF response time 100 us/100 us
Software filter time Supported
Input impedance Reference: 5.3k to 5.6k
Isolation Yes

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Item Specification
Input action display Input indicators are turned ON (via software
control) when the inputs are in the driving
state
Input derating 50% derating at 55°C (the number of ON
inputs does not exceed 4), or 10°C derating
when all inputs are ON
■ Output specifications
Item Specification
Output type Digital output, NPN
Output mode Sinking
Output channels 8
Output voltage class 24 VDC±10% (21.6 VDC to 26.4 VDC)
Output load (resistive load) 0.5 A/ point, 2 A/ module
Output load (inductive load) 7.2 W/ point, 12 W/ module
Output load (lamp load) 5 W/ point, 9 W/ module
ON/OFF response time 100 us/100 us
Leakage current at OFF 10 uA
Switching frequency 100 Hz with resistive load, 0.5 Hz with
inductive load, 10 Hz with lamp load
Isolation Yes
Output action display Output indicators are turned ON (via
software control) when the outputs are in
the driving state
Output derating 50% derating at 55°C (the output current
does not exceed 1A when all outputs are ON
), or 10°C derating when all outputs are ON
Protection function Short circuit protection, overcurrent
protection

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■ Software specifications
Item Specification
Output mode upon stop Output zero, output last value, output preset
value
Preset value 0 or 1
Output port anomaly detection and
indication
N/A
Output channel logic level configuration Not supported
Independent channel enable configuration Not supported
Diagnostic report configuration Not supported
When in stop mode Output according to output mode upon stop
and present value, no refresh
Note
Stop at fault refers to:
●Background start/stop;
●The bus of GL20 communication interface module is out of communication
due to disconnection of the network cable or manual state switching;
●The local bus stops operation.

‑14‑
2 Mechanical Installation
2.1 Mounting Dimensions
■ Module
The mounting dimensions (in mm) are shown in the figure below.
■ Cable Connection

‑15‑
2.2 Installation Method
■ Installing Modules Side-by-Side
The module is mounted onto a DIN rail in conformity with IEC 60715 (width: 35 mm,
thickness: 1 mm). The dimensions (unit: mm) are shown below.
You can install multiple modules side by side with the help of top and bottom guides
on the modules, as shown below.

‑16‑
■ Installing Module onto DIN Rail
You can install the module onto a DIN rail. Align the module with the DIN rail and
push the module in the direction indicated by the arrow until you hear a click, as
shown below.
Note: After the module is installed, the DIN rail mounting hook will automatically
move downward to lock the module to the rail. If the DIN rail mounting hook does not
move downward, press down the top of it to ensure that the module is installed in
place.
Mount an end plate on either side of the module assembly. To mount the end plate,
hook the bottom of it to the bottom of the DIN rail, rotate the end plate to hook the
top of it to the top of the DIN rail, and then tighten the screw to lock the end plate in
place, as shown below.

‑17‑
■ Removing Module
Pry the DIN rail mounting hook upwards with a tool such as slotted screwdriver, hold
the protrusions and pull the module out straight forward, and then press down the
top of the DIN rail mounting hook.

‑18‑
3 Electrical Installation
3.1 Cable Selection
The cable lug and cable diameter included in the following table are only for
reference.
Material
Name
Applicable Cable Diameter KST Suzhou Yuanli
mm2AWG Model Crimping
Tool
Model Crimping
Tool
Tubular
lug
0.3 22 E0308
KST2000L
0308
YAC‑5
0.5 20 E0508 0508
0.75 18 E7508 7508
1.0 18 E1008 1008
1.5 16 E1508 1508
If you use other types of tubular lug, crimp the lug to the cables according to the
shape and dimension requirements shown in the figure below.