Beijer GT-1428 Digital Input Output Module

8 digital input (sink), 8 digital output (source), 24 VDC, 0.5 A, diagnostic, cage clamp, 18 pt removable terminal
Doc ID: 137670
2025-02-20

Copyright © 2025 Beijer Electronics AB. All rights reserved. The information in this document is subject to change without notice and is provided as available at the time of printing. Beijer Electronics AB reserves the right to change any information without updating this publication. Beijer Electronics AB assumes no responsibility for any errors that may appear in this document. All examples in this document are only intended to improve understanding of the functionality and handling of the equipment. Beijer Electronics AB cannot assume any liability if these examples are used in real applications. In view of the wide range of applications for this software, users must acquire sufficient knowledge themselves in order to ensure that it is correctly used in their specific application. Persons responsible for the application and the equipment must themselves ensure that each application is in compliance with all relevant requirements, standards, and legislation in respect to configuration and safety. Beijer Electronics AB will accept no liability for any damage incurred during the installation or use of equipment mentioned in this document. Beijer Electronics AB prohibits all modification, changes, or conversion of the equipment.

Head Office
Beijer Electronics AB
Box 426
201 24 Malmö, Sweden
www.beijerelectronics.com / +46 40 358600

About This Manual

This manual contains information on the software and hardware features of the Beijer Electronics GT-1428 Digital Input/Output Module. It provides in-depth specifications, guidance on installation, setup, and usage of the product.

Symbols Used in This Manual
This publication includes Warning, Caution, Note, and Important icons where appropriate, to point out safety-related or other important information. The corresponding symbols should be interpreted as follows:

WARNING
The Warning icon indicates a potentially hazardous situation that, if not avoided, could result in death or serious injury and major damage to the product.

CAUTION
The Caution icon indicates a potentially hazardous situation that, if not avoided, could result in minor or moderate injury and moderate damage to the product.

NOTE
The Note icon alerts the reader to relevant facts and conditions.

IMPORTANT
The Important icon highlights important information.

Safety

• Before using this product, please read this manual and other relevant manuals carefully. Pay full attention to safety instructions!
• In no event will Beijer Electronics be responsible or liable for damages resulting from the use of this product.
• The images, examples and diagrams in this manual are included for illustrative purposes. Because of the many variables and requirements associated with any particular installation, Beijer Electronics cannot take responsibility or liability for actual use based on the examples and diagrams.

Product Certifications
The product has the following certifications.

General Safety Requirements

WARNING

• Do not assemble the products and wires with power connected to the system. Doing so causes an “arc flash”, which can result in unexpected, dangerous events
  (burns, fire, flying objects, blast pressure, sound blast, heat).
• Do not touch terminal blocks or IO modules when the system is running. Doing so may cause an electric shock, short circuit or malfunction of the device.
• Never let external metallic objects touch the product when the system is running. Doing so may cause an electric shock, a short circuit or malfunction of the device.
• Do not place the product near inflammable material. Doing so may cause a fire.
• All wiring work should be performed by an electrical engineer.
• When handling the modules, ensure that all persons, the workplace, and the packaging are well grounded. Avoid touching conductive components, the modules contain electronic components that may be destroyed by electrostatic discharge.

CAUTION

• Never use the product in environments with temperatures over 60℃. Avoid placing the product in direct sunlight.
• Never use the product in environments with over 90% humidity.
• Always use the product in environments with pollution degree 1 or 2.
• Use standard cables for wiring.

About the G-series System

System overview

• Network Adapter Module – The network adapter module forms the link between the field bus and the field devices with the expansion modules. The connection to different field bus systems can be established by each of the corresponding network adapter modules, e.g., for MODBUS TCP, Ethernet IP, EtherCAT, PROFINET, CC-Link IE Field, PROFIBUS, CANopen, DeviceNet, CC-Link, MODBUS/Serial etc.
• Expansion Module – Expansion module types: Digital IO, Analog IO, and Special modules.
• Messaging – The system uses two types of messaging: Service messaging and IO messaging.

IO Process Data Mapping
An expansion module has three types of data: IO data, configuration parameters, and memory registers. The data exchange between the network adapter and the expansion modules is made via IO process image data by internal protocol.

Data flow between the network adapter (63 slots) and the expansion modules

The input and output image data depend on the slot position and the data type of the expansion slot. The ordering of the input and output process image data is based on the expansion slot position. Calculations for this arrangement are included in the manuals for the network adapter and programmable IO modules.

Valid parameter data depends on the modules in use. For example, analog modules have settings of either 0-20 mA or 4-20 mA, and temperature modules have settings such as PT100, PT200, and PT500. The documentation for each module provides a description of the parameter data.

Specifications

Environmental Specifications

Operating temperature	-20°C – 60°C
UL temperature	-20°C – 60°C
Storage temperature	-40°C – 85°C
Relative humidity	5% – 90% non-condensing
Mounting	DIN rail
Shock operating	IEC 60068-2-27 (15G)
Vibration resistance	IEC 60068-2-6 (4 g)
Industrial emissions	EN 61000-6-4: 2019
Industrial immunity	EN 61000-6-2: 2019
Installation position	Vertical and horizontal
Product certifications	CE, FCC, UL, cUL

General Specifications

Power dissipation	Max. 55 mA @ 5 VDC
Isolation	I/O to logic: Photocoupler isolation
UL field power	Supply voltage: 24 VDC nominal, class 2
Field power	Supply voltage: 24 VDC nominal Voltage range: 15 – 30 VDC Power dissipation: 40 mA @ 24 VDC
Wiring	I/O cable max. 0.75 mm2 (AWG 18)
Weight	63 g
Module size	12 mm x 109 mm x 70 mm

Dimensions

Module dimensions (mm)

Input Specifications

Inputs per module	8 points sink type
Indicators	8 green input status
On-state voltage	24 VDC nominal 15 – 30 VDC @ 60 ℃
On-state current	2.25 mA @ 24 VDC 3 mA @ 30 VDC
Off-state voltage	8 VDC @ 25 ℃
Input signal delay	OFF to ON: Max. 0.3 ms ON to OFF: Max. 0.3 ms
Input filter	Adjustable, up to 10 ms
Nominal input impedance	10.2K Ω typical

Output Specifications

Outputs per module	8 points source type
Indicators	8 green input status
Output voltage range	24 VDC nominal 15 – 30 VDC @ 60 ℃
On-state voltage drop	0.3 VDC @ 25 ℃ 0.6 VDC @ 60 ℃

On-state min. current	Min. 1 mA
Off-state leakage current	Max. 10 uA
Output signal delay	OFF to ON: Max. 0.1 ms ON to OFF: Max. 0.35 ms
Output current rating	Max. 0.5 A per channel / Max. 4 A per unit
Protection	Over current limit: 2.2 A @ 25 °C each channel Thermal shutdown: 175 °C Short-circuit protection

Wiring Diagram

Pin no.	Signal description
0	Input channel 0
1	Output channel 0
2	Input channel 1
3	Output channel 1
4	Input channel 2
5	Output channel 2
6	Input channel 3
7	Output channel 3
8	Input channel 4
9	Output channel 4
10	Input channel 5
11	Output channel 5
12	Input channel 6
13	Output channel 6
14	Input channel 7
15	Output channel 7
16	Common (Field power 0 V)
17	Common (Field power 24 V)

LED Indicator

LED no.	LED function/description	LED color
0 (left side)	INPUT channel 0	Green
1	INPUT channel 1	Green
2	INPUT channel 2	Green
3	INPUT channel 3	Green
4	INPUT channel 4	Green
5	INPUT channel 5	Green
6	INPUT channel 6	Green
7	INPUT channel 7	Green
0 (right side)	OUTPUT channel 0	Green
1	OUTPUT channel 1	Green
2	OUTPUT channel 2	Green
3	OUTPUT channel 3	Green
4	OUTPUT channel 4	Green
5	OUTPUT channel 5	Green
6	OUTPUT channel 6	Green
7	OUTPUT channel 7	Green

LED Channel Status
LED no. 0-7 (left side)

Status	LED	Indication
No signal	Off	Normal operation
On signal	Green	Normal operation

LED no. 0-7 (right side) 

Status	LED	Indication
No signal	Off	Normal operation
On signal	Green	Normal operation
Channel fault	Flash	Short to GND Over current Over temperature

Mapping Data Into the Image Table

Input module data

D7	D6	D5	D4	D3	D2	D1	D0
D15	D14	D13	D12	D11	D10	D9	D8

Input image value

Bit no.	Bit 7	Bit 6	Bit 5	Bit 4	Bit 3	Bit 2	Bit 1	Bit 0
Byte 0	D7	D6	D5	D4	D3	D2	D1	D0
Byte 1	D15	D14	D13	D12	D11	D10	D9	D8

Output image value

Bit no.	Bit 7	Bit 6	Bit 5	Bit 4	Bit 3	Bit 2	Bit 1	Bit 0
Byte 0	D7	D6	D5	D4	D3	D2	D1	D0

Output module data

D7

D6

D5

D4

D3

D2

D1

D0

Parameter Data

Valid parameter length: 4 bytes

Bit no.	Bit 7	Bit 6	Bit 5	Bit 4	Bit 3	Bit 2	Bit 1	Bit 0
Byte 0	Fault action (ch0 – ch7) 0: Fault value 1: Hold last state
Byte 1	Fault value (ch0 – ch7) 0: Off 1: On
Byte 2	Input filter value: 0 – 10 (unit: ms)
Byte 3	Reserved

Hardware Setup

CAUTION

• Always read this chapter before installing the module!
• Hot surface! The surface of the housing can become hot during operation. If the device is used in high ambient temperatures, always let the device cool down before touching it.
• Working on energized devices can damage the equipment! Always turn off the power supply before working on the device.

Space Requirements
The following drawings show the space requirements when installing the G-series modules. The spacing creates space for ventilation and prevents conducted electromagnetic interference from influencing the operation. The installation position is valid vertically and horizontally. The drawings are illustrative and may be out of proportion.

CAUTION
NOT following the space requirements may result in damaging the product.

Mount Module to DIN Rail
The following chapters describe how to mount the module to the DIN rail.

CAUTION
The module must be fixed to the DIN rail with the locking levers.

Mount GL-9XXX or GT-XXXX Module
The following instructions apply to these module types:

• GL-9XXX
• GT-1XXX
• GT-2XXX
• GT-3XXX
• GT-4XXX
• GT-5XXX
• GT-7XXX

GN-9XXX modules have three locking levers, one at the bottom and two on the side. For mounting instructions, refer to Mount GN-9XXX Module.

Mount GN-9XXX Module
To mount or dismount a network adapter or programmable IO module with the product name GN-9XXX, for example GN-9251 or GN-9371, see the following instructions:

Mount Removable Terminal Block
To mount or dismount a removable terminal block (RTB), see the instructions below.

Connect Cables to Removable Terminal Block
To connect/disconnect cables to/from the removable terminal block (RTB), see the instructions below.

WARNING
Always use the recommended supply voltage and frequency to prevent damage to the equipment and ensure optimal performance.

Field Power and Data Pins
Communication between the G-series network adapter and the expansion module, as well as the system /field power supply of the bus modules, is carried out via the internal bus. It is comprised of 2 Field Power Pins and 6 Data Pins.

WARNING
Do not touch the data and field power pins! Touching can result in soiling and damage by ESD noise.

Pin no.	Name	Description
P1	System VCC	System supply voltage (5 VDC)
P2	System GND	System ground
P3	Token output	Token output port of the processor module
P4	Serial output	Transmitter output port of the processor module
P5	Serial input	The receiver input port of the processor module
P6	Reserved	Reserved for bypass token
P7	Field GND	Field ground
P8	Field VCC	Field supply voltage (24 VDC)

Beijer Electronics, Doc ID: 137670

Documents / Resources

Beijer GT-1428 Digital Input Output Module [pdf] User Manual GT-1428, GT-1428 Digital Input Output Module, GT-1428, Digital Input Output Module, Input Output Module, Output Module, Module

References

• User Manual