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Specifications

Specifications


Products: Twisted Pair Adapter
Functionalities: Hardware
Product version: 1.8, 1.9, 2.0, 2.1, 3.0, 3.1, 3.2, 3.3, 2022, 2023, 2024, 7.0, 7.1
12/18/2025

SpaceLogic Twisted Pair Adapter

arrow1_rotationIntroduction arrow1_rotationFeatures arrow1_rotationSpecifications arrow1_rotationConnectors, LEDs, Button, and Switch
 
action_zoom_plus_stroke Twisted Pair Adapter - Ethernet (TPA-E)
Figure: Twisted Pair Adapter - Ethernet (TPA-E)

Introduction

SpaceLogic™ Twisted Pair Adapter - Ethernet (TPA-E) connects SpaceLogic BACnet/IP controllers and automation servers to IP networks using existing twisted pair cabling. The adapter enables seamless integration of legacy serial and free topology networks into the EcoStruxure Building Management System (BMS), reducing installation costs and simplifying retrofit projects. Designed for scalability and easy installation, the adapter supports free network topologies and requires minimal configuration.

Features

Twisted Pair Adapter offers the following features:

  • Ethernet over twisted pair cable networks

  • OSI Layer 2 (L2) switching for IP communication

  • Self-recovering mesh network and multi-hop capability

  • Retrofit support for legacy protocols such as LonWorks FTT-10 to BACnet/IP or BACnet/SC

  • Free topology network support

  • IEEE 802.3 compliant Ethernet 10/100 Mbit interface (RJ45)

  • Scalable up to 64 nodes per twisted pair network and cable lengths up to 1200 m (3900 ft)

  • BACnet/IP and BACnet/SC support

  • Standard 24 VAC or 24 VDC power supply

  • DIN rail or wall installation

  • Polarity-insensitive connection to twisted pair cables

  • Removable screw terminal blocks

  • Consistent hardware design with SpaceLogic devices

  • Configurable Master/Terminal operating mode

  • LED status indicators and restart button

  • Secure boot

  • Transparent to EcoStruxure Building Operation software

  • Twisted Pair Adapter Engineering Tool for monitoring and firmware upgrade

IP network communication

The adapter features OSI Layer 2 (L2) switching, enabling efficient data forwarding using MAC addresses. Designed for plug-and-play operation, the adapter requires no configuration.

Self-recovering mesh network and multi-hop capability

The adapter supports a self-recovering mesh network that adapts to changes in network topology and extends communication range through multi-hop capability.

Retrofit projects

The adapter enables integration of the IP-based SpaceLogic controllers into networks originally designed for serial or free topology protocols. By reusing existing twisted pair cabling, the adapter minimizes the need for new wiring and infrastructure changes.

 
action_zoom_plus_stroke Example with transition from serial communication to Ethernet/IP over twisted pair network
Figure: Example with transition from serial communication to Ethernet/IP over twisted pair network
Free topology network support

The adapter supports free topology networks, allowing twisted pair cable networks to be arranged in bus, star, ring, daisy-chain, or hybrid configurations.

 
action_zoom_plus_stroke Free topology network support
Figure: Free topology network support
Scalable network

The adapter is designed for scalability, supporting up to 64 nodes (adapters) per twisted pair network and cable lengths up to 1200 m (3900 ft).

Support for IP-based protocols

The adapter is protocol-agnostic and supports BACnet/IP and BACnet/SC (Secure Connect) used in EcoStruxure BMS networks.

Power supply

The adapter uses a standard 24 VAC or 24 VDC power supply, which can be the same as the one used for the SpaceLogic BACnet/IP controller or automation server. The adapter does not supply power to the twisted pair network.

 
action_zoom_plus_stroke Example with AS-P-3 server and RP-C 24 V controller model
Figure: Example with AS-P-3 server and RP-C 24 V controller model

For RP-C 230 V controller models, the 24 VAC output can power the adapter.

 
action_zoom_plus_stroke Example with AS-P-3 server and RP-C 230 V controller model
Figure: Example with AS-P-3 server and RP-C 230 V controller model
DIN rail installation

The device can be easily mounted on a DIN rail using a spring latch or installed or on a wall or flat surface. It measures 1.5 units in width (27 mm or 1.1 inches). You install it next to the SpaceLogic BACnet/IP controller or automation server.

 
action_zoom_plus_stroke Installing the device on a DIN rail
Figure: Installing the device on a DIN rail
Consistent hardware design

The adapter features a hardware design that aligns visually and mechanically with other SpaceLogic devices for uniform installations.

Polarity-insensitive network connection

The adapter interface to the twisted pair cable network is isolated and polarity-insensitive for error-resistant installation.

Removable screw terminal blocks

The device has removable screw terminal blocks for power input and connection to the twisted pair cable network.

Configurable operating mode

The operating modes are controlled by the M/T slide switch on the front of the adapter:

  • Master – For connection to an automation server (only one Master per network).

  • Terminal – For connection to a SpaceLogic BACnet/IP controller.

 
action_zoom_plus_stroke Master and Terminal operating modes
Figure: Master and Terminal operating modes
LED status indicators

The device has three LEDs on the front:

  • NET Link LED shows the status of the device's twisted pair cable network connection.

  • Ethernet LED displays the status of the Ethernet link and data activity.

  • Master LED indicates if the device is in Master mode or Terminal mode.

Restart button

The device has an INIT button on the front that allows you to restart the device.

Secure boot

The adapter uses Secure Boot to help ensure the device starts only with Schneider Electric trusted software.

Transparent to EcoStruxure Building Operation software

The adapter functions as part of the network infrastructure and does not appear in the user interface.

Twisted Pair Adapter Engineering Tool

Twisted Pair Adapter Engineering Tool is a standalone tool that allows monitoring of adapter status and link quality. The tool also enables firmware upgrades of connected adapters.

 
action_zoom_plus_stroke Twisted Pair Adapter Engineering Tool
Figure: Twisted Pair Adapter Engineering Tool

Table: Part Numbers

Product

Part number

SpaceLogic TPA-E
SXWTPAE10001

Specifications

AC input
Nominal voltage
24 VAC
Operating voltage range
±30 %
Frequency
50/60 Hz
Maximum power consumption
3 VA
Power input protection
MOV suppression and internal fuse
DC input
Nominal voltage
24 to 30 VDC
Operating voltage range
21 to 33 VDC
Maximum power consumption
1.5 W
Power input protection
MOV suppression and internal fuse
Environment
Ambient temperature, operating
-25 to +60 °C (-13 to +140 °F)
Ambient temperature, storage
-30 to +75 °C (-22 to +167 °F)
Humidity
Maximum 95 % RH non-condensing
Material
Ingress protection rating
IP 20
Plastic flame rating
UL94 V-0
Plenum rating
UL 2043 (Approved for plenum installations)
Mechanical
Dimensions
27 W x 110 H x 64 D mm (1.1 W x 4.3 H x 2.5 D in.)
 
action_zoom_plus_stroke
Weight
98 g (3.5 oz)
Installation
DIN rail or flat surface
  
Approved for plenum installation (UL 2043)
Agency compliances
Emission
RCM; BS/EN IEC 61000-6-3; BS/EN IEC 63044-5-2; FCC Part 15, Sub-part B, Class B; CAN ICES-003(B)
Immunity
BS/EN IEC 61000-6-2; BS/EN IEC 63044-5-2; BS/EN IEC 63044-5-3
Safety standards
BS/EN IEC 60730-1; BS/EN IEC 60730-2-11; BS/EN IEC 63044-3; UL 916 C-UL US Listed a
Product
BS/EN IEC 63044-1
Fire performance in air-handling spaces a
UL 2043
Communication ports
Ethernet
10/100BASE-TX (RJ45), IEEE 802.3 compliant
NET a
2-position removable screw terminal block, polarity insensitive
  
MOV suppression
Communications
Data communication
Transmission media
Twisted pair cable network
Maximum number of nodes per network
64
Maximum cable length
1200 m (3900 ft)
Recommended cable type
Twisted pair, single pair, 20 AWG (0.52 mm²) or greater cross-sectional area
Transmission rate
10 or 100 Mbit/s a
Management interface
Management IP address
192.168.0.249
Hardware
Connectors
RJ45 port for Ethernet 10/100BASE-TX, IEEE 802.3 compliant
  
4-position removable screw terminal block for power input
  
2-position removable screw terminal block for NET (twisted pair cable network)
Status indicator LEDs
NET link
  
Ethernet link/activity
  
Master mode
Button
Initialize (INIT)
Switch
Master/Terminal mode
  
2-pole slide switch

Connectors, LEDs, Button, and Switch

 
action_zoom_plus_stroke Twisted Pair Adapter connectors, LEDs, button, and switch
Figure: Twisted Pair Adapter connectors, LEDs, button, and switch