BRT Systems LDSBus LA010101A User manual

Copyright © BRT Systems Pte Ltd 1
LDSBus HVT - Junction Datasheet
Version 1.1
Document Reference No.: BRTSYS_000002 Clearance No.: BRTSYS#003
LDSBus HVT - Junction
Datasheet
Neither the whole nor any part of the information contained in, or the product described in this manual, may be adapted, or reproduced
in any material or electronic form without the prior written consent of the copyright holder. This product and its documentation are
supplied on an as-is basis and no warranty as to their suitability for any particular purpose is either made or implied. BRT Systems Pte
Ltd will not accept any claim for damages howsoever arising as a result of use or failure of this product. Your statutory rights are not
affected. This product or any variant of it is not intended for use in any medical appliance, device, or system in which the failure of the
product might reasonably be expected to result in personal injury. This document provides preliminary information that may be subject
to change without notice. No freedom to use patents or other intellectual property rights is implied by the publication of this document.
BRT Systems Pte Ltd, 178 Paya Lebar Road, #07-03, Singapore 409030. Singapore Registered Company Number: 202220043R
1Introduction
The LDSBus HVT-Junction connects LDSBus
Devices (Sensors /Actuators) to the LDSBus. It
serves as a data and power interface between
the LDSBus host and the LDSBus devices. Each
LDSBus HVT-Junction can connect up to four
LDSBus Devices. Additional LDSBus HVT-
Junctions may be daisy chained to add more
LDSBus devices to the bus.
1.1 Features
•Connects LDSBus devices to LDSBus Host
and supports daisy chain connections through
the RJ45 LDSBus ports
•Supports four LDSBus device connections
through the RJ11/RJ12 LDSU ports
•Built-in DC-DC converter for stepping down
the LDSBus +24VDC supply to +5VDC for
LDSU ports
•Built-in Voltage protection for RJ45 ports
•Built-in Overcurrent protection
•Flush mount and DIN Rail mounting options
•Operating temperature range : 0oC to +70oC

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LDSBus HVT - Junction Datasheet
Version 1.1
Document Reference No.: BRTSYS_000002 Clearance No.: BRTSYS#003
2Part Numbers
Part#
Naming
LA010101A
LDSBus HVT-Junction
LA120101A
LDSBus DIN Rail Mount Set

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LDSBus HVT - Junction Datasheet
Version 1.1
Document Reference No.: BRTSYS_000002 Clearance No.: BRTSYS#003
Table of Contents
1Introduction.................................................................... 1
1.1 Features.................................................................................... 1
2Part Numbers .................................................................. 2
3Product Specifications..................................................... 4
4Hardware Features.......................................................... 5
5Connection Diagram........................................................ 6
6Mounting Options ............................................................ 7
6.1 Flush Mount .............................................................................. 7
6.2 DIN Rail Mount.......................................................................... 7
7Mechanical Dimension..................................................... 8
8Contact Information........................................................ 9
Appendix A - References .................................................... 10
Document References ..................................................................... 10
Acronyms and Abbreviations ........................................................... 10
Appendix B - List of Figures and Tables ............................. 11
List of Figures ................................................................................. 11
List of Tables ................................................................................... 11
Appendix C –Revision History ........................................... 12

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LDSBus HVT - Junction Datasheet
Version 1.1
Document Reference No.: BRTSYS_000002 Clearance No.: BRTSYS#003
3Product Specifications
Features
Interface
RS485
LED Indicator
Red LED (Power On)
Mounting
Flush Mount
DIN Rail Mount
Power
Input Voltage
24V DC Bus Power
Input Max. Current
200mA
Output Voltage
5V DC (LDSU Ports)
Output Max. Current
800mA
Physical
Characteristics
Color
White
Housing
Polycarbonate
Dimensions
L117.6mm x W42.9mm x H29.7mm
Environmental
Limits
Operating Temperature
0 to 70°C
Storage Temperature
-20 to 85°C
Ambient Relative Humidity
5 to 95% (non-condensing)
Package
Contents
Device
1x LDSBus HVT-Junction
Installation (Optional)
1x DIN Rail Bracket Set
Table 1 - LDSBus HVT Junction Specifications

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LDSBus HVT - Junction Datasheet
Version 1.1
Document Reference No.: BRTSYS_000002 Clearance No.: BRTSYS#003
4Hardware Features
Figure 1 - LDSBus HVT-Junction Flush Mount / DIN Rail Plate –Hardware Features
LDSU
LDSBus
Power Status
Indicator
Flush Mounting Slot
DIN Rail Plate

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LDSBus HVT - Junction Datasheet
Version 1.1
Document Reference No.: BRTSYS_000002 Clearance No.: BRTSYS#003
5Connection Diagram
Figure 2 illustrates the connection of the LDSBus HVT-Junction (LDSBus Device) in an LDSBus system.
Setup Instructions:
1. Connect the first LDSBus HVT-Junction to any of the LDSBus Host Systems using a RJ45 (CAT5e)
cable.
2. Connect the configured LDSBus Device(s) to the LDSBus HVT-Junction as shown in Figure 2.
3. If there is more than one LDSBus HVT-Junction, chain them together as shown in Figure 2.
Please visit http://bit.ly/ldsbus-resources to view the full application, setup and installation guides.
Figure 2 - LDS Bus –HVT Junction in LDSBus System –Connection Diagram

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LDSBus HVT - Junction Datasheet
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Document Reference No.: BRTSYS_000002 Clearance No.: BRTSYS#003
6Mounting Options
6.1 Flush Mount
The LDSBus HVT Junction can be flush mounted directly on a wall or any flat surface using 2 M3.5*16mm
(thread) screws.
Figure 3 - LDSBus HVT-Junction - Flush Mounting
6.2 DIN Rail Mount
The LDSBus HVT Junction can be mounted on a DIN Rail using the LDSBus DIN Rail Mount set. This set is
optional and includes the bracket and mounting screws.
Figure 4 - LDSBus HVT-Junction - DIN Rail Mount
2xM3.5*16mm
DIN Rail Mount

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LDSBus HVT - Junction Datasheet
Version 1.1
Document Reference No.: BRTSYS_000002 Clearance No.: BRTSYS#003
7Mechanical Dimension
Figure 5 - LDSBus HVT-Junction Dimension –Top View
Figure 6 - LDSBus HVT-Junction Dimension –Side View
Figure 7 - LDSBus HVT-Junction Dimension –Bottom View
Note: All dimensions are in millimetres.
10.0
60.0
29.7
117.6
105.0
42.9

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LDSBus HVT - Junction Datasheet
Version 1.1
Document Reference No.: BRTSYS_000002 Clearance No.: BRTSYS#003
8Contact Information
Head Quarters –Singapore
BRT Systems Pte Ltd
178 Paya Lebar Road, #07-03
Singapore 409030
Tel: [phone]
Fax: [phone]
E-mail (Sales)
[email protected]
E-mail (Support)
[e-mail]
Web Site
http://brtsys.com/
Distributor and Sales Representatives
Please visit the Sales Network page of the BRT Systems Web site for the contact details of our distributor(s) and sales
representative(s) in your country.
System and equipment manufacturers and designers are responsible to ensure that their systems, and any BRT Systems Pte Ltd (BRTSYS) devices
incorporated in their systems, meet all applicable safety, regulatory and system-level performance requirements. All application-related information in this
document (including application descriptions, suggested BRT Systems devices, and other materials) is provided for reference only. While BRT Systems has
taken care to assure it is accurate, this information is subject to customer confirmation, and BRT Systems disclaims all liability for system designs and for any
applications assistance provided by BRT Systems. Use of BRT Systems devices in life support and/or safety applications is entirely at the user’s risk, and the
user agrees to defend, indemnify and hold harmless BRT Systems from any and all damages, claims, suits, or expense resulting from such use. This
document is subject to change without notice. No freedom to use patents or other intellectual property rights is implied by the publication of this document.
Neither the whole nor any part of the information contained in, or the product described in this document, may be adapted, or reproduced in any material or
electronic form without the prior written consent of the copyright holder. BRT Systems Pte Ltd, 178 Paya Lebar Road, #07-03, Singapore 409030. Singapore
Registered Company Number: 202220043R.

Copyright © BRT Systems Pte Ltd 10
LDSBus HVT - Junction Datasheet
Version 1.1
Document Reference No.: BRTSYS_000002 Clearance No.: BRTSYS#003
Appendix A - References
Document References
BRTSYS_AN_001_LDSBus_Configuration_Utility_User_Guide
BRTSYS_API_001_LDSBus_Python_SDK_Guide
HVT Junction Quick Start Guide
Acronyms and Abbreviations
Terms
Description
DC
Direct Current
LED
Light Emitting Diode
IoT
Internet of Things
HVT-Junction
High Voltage T-Junction

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LDSBus HVT - Junction Datasheet
Version 1.1
Document Reference No.: BRTSYS_000002 Clearance No.: BRTSYS#003
Appendix B - List of Figures and Tables
List of Figures
Figure 1 - LDSBus HVT-Junction Flush Mount / DIN Rail Plate –Hardware Features .............................. 5
Figure 2 - LDS Bus –HVT Junction in LDSBus System –Connection Diagram....................................... 6
Figure 3 - LDSBus HVT-Junction - Flush Mounting ............................................................................ 7
Figure 4 - LDSBus HVT-Junction - DIN Rail Mount............................................................................. 7
Figure 5 - LDSBus HVT-Junction Dimension –Top View ..................................................................... 8
Figure 6 - LDSBus HVT-Junction Dimension –Side View .................................................................... 8
Figure 7 - LDSBus HVT-Junction Dimension –Bottom View ................................................................ 8
List of Tables
Table 1 - LDSBus HVT Junction Specifications .................................................................................. 4

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LDSBus HVT - Junction Datasheet
Version 1.1
Document Reference No.: BRTSYS_000002 Clearance No.: BRTSYS#003
Appendix C –Revision History
Document Title: LDSBus HVT - Junction Datasheet
Document Reference No.: BRTSYS_000002
Clearance No.: BRTSYS#003
Product Page: https://brtsys.com/ldsbus/
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Revision
Changes
Date
Version 1.0
Initial Release
27-10-2021
Version 1.1
Updated release under BRT Systems
14-09-2022