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Specifications

Specifications


Products: MP-C, MP-V, RP-C, RP-V
Functionalities: Hardware
Product version: 2022, 2023, 2024
10/2/2023

SpaceLogic RS-485 Adapters

arrow1_rotationIntroduction arrow1_rotationIsolated RS-485 Adapter arrow1_rotationNon-isolated RS-485 Adapter arrow1_rotationRS-485 Power Adapter arrow1_rotationSpecifications
 
action_zoom_plus_stroke Isolated RS-485 Adapter, Non-isolated RS-485 Adapter, and RS-485 Power Adapter

Isolated RS-485 Adapter, Non-isolated RS-485 Adapter, and RS-485 Power Adapter

Introduction

The SpaceLogic™ RS-485 Adapters are RJ45 to screw terminal adapters offered as accessories for RP and MP controllers. The adapters facilitate the controllers' connection to and use in RS-485 based networks such as BACnet MS/TP, Modbus RTU, Sensor Bus, and Room Bus. The adapters provide screw termination for the wiring and help to avoid miswiring.

The RS-485 Adapters are available in three models:

  • Isolated RS-485 Adapter

  • Non-isolated RS-485 Adapter

  • RS-485 Power Adapter

For information on which adapter(s) can be used for a particular controller model, and to which RS-485 port it can be connected, see sections “Support and Use of…”.

Isolated RS-485 Adapter

The Isolated RS-485 Adapter has an isolated RS-485 transceiver, and it is used when connecting an RP or MP controller to a BACnet MS/TP network comprised of isolated controllers, such as MNB BACnet devices (zone controllers) and selected others. The adapter is intended for use with IP based RP and MP controllers that support reconfiguration from BACnet/IP to BACnet MS/TP communications. The adapter is frequently used in retrofit projects.

The adapter is also used when connecting an RP or MP controller to other isolated RS-485 devices such as some Modbus RTU network controllers. It is required that the controller model supports Modbus and that one of its RS-485 port(s) is configured for Modbus communications.

 
action_zoom_plus_stroke Isolated RS-485 Adapter

Isolated RS-485 Adapter

The adapter converts the controller RS-485 RJ45 port to screw terminals, which is required to be able to connect the controller to a BACnet MS/TP or Modbus RTU network and the RS-485 port screw terminals of an automation server.

 
action_zoom_plus_stroke Isolated RS-485 Adapter, connectors

Isolated RS-485 Adapter, connectors

The adapter is equipped with an RJ45 port and a 4-position removable screw terminal block.

To connect the adapter to the controller, it is recommended to use a Cat 5 (or higher) UTP cable with eight conductors and RJ45 connectors, a cross-sectional area of 22 to 26 AWG (0.34 to 0.14 mm 2 ), a maximum cable length of 0.3 m (12 in.), and a rating that meets the requirements of the target environment. The cable is not included and needs to be purchased separately.

The adapter has a protruding bracket on each long side with a mounting hole to facilitate installation of the device with two screws (not included). The device can also be fastened using cable ties or mounted in line with a cable run. The adapter is suitable for plenum use.

Non-isolated RS-485 Adapter

The Non-isolated RS-485 Adapter is used when connecting an RP or MP controller to a BACnet MS/TP network that includes non-isolated controllers, such as the b3 BACnet family of zone controllers. The adapter is intended for use with IP based RP and MP controllers that support reconfiguration from BACnet/IP to BACnet MS/TP communications. The adapter is frequently used in retrofit projects.

The adapter is also used when connecting an RP or MP controller to a Modbus RTU network that includes non-isolated Modbus devices. It is required that the controller model supports Modbus and that one of its RS-485 port(s) is configured for Modbus communications.

 
action_zoom_plus_stroke Non-isolated RS-485 Adapter

Non-isolated RS-485 Adapter

The adapter converts the controller RS-485 RJ45 port to screw terminals, which is required to be able to connect the controller to a BACnet MS/TP or Modbus RTU network and the RS-485 port screw terminals of an automation server.

 
action_zoom_plus_stroke Non-isolated RS-485 Adapter, connectors

Non-isolated RS-485 Adapter, connectors

The adapter is equipped with an RJ45 port and a 4-position removable screw terminal block.

To connect the adapter to the controller, it is recommended to use a Cat 5 (or higher) UTP cable with eight conductors and RJ45 connectors, a cross-sectional area of 22 to 26 AWG (0.34 to 0.14 mm 2 ), a maximum cable length of 0.3 m (12 in.), and a rating that meets the requirements of the target environment. The cable is not included and needs to be purchased separately.

The adapter has a protruding bracket on each long side with a mounting hole to facilitate installation of the device with two screws (not included). The device can also be fastened using cable ties or mounted in line with a cable run. The adapter is suitable for plenum use.

RS-485 Power Adapter

The RS-485 Power Adapter is used with RP and MP controllers to support the connection of various types of devices to an RS-485 based network such as Modbus RTU, Sensor Bus, or Room Bus. The adapter is a flexible device that can be used for several different applications, which mainly fall into the following categories:

  • Convert a controller RS-485 RJ45 port to screw terminals

  • Enable injection of 24 VDC from an external power supply to an RS-485 bus

 
action_zoom_plus_stroke RS-485 Power Adapter

RS-485 Power Adapter

The adapter can be used to convert the controller RS-485 RJ45 port to screw terminals, which is required to be able to connect the controller to a Modbus RTU network and the RS-485 port screw terminals of an automation server. The adapter should not be used to connect an MP or RP controller to a BACnet MS/TP network, as it can cause ground loops and poses a risk of miswiring of 24 VDC and bias terminals.

The adapter can be used for injecting 24 VDC from an external 24 VDC power supply to Sensor Bus or Room Bus. This is useful, for example, in applications where you want to extend the bus by connecting (daisy-chaining) additional devices, which the controller would otherwise not be able to power. The external power supply is connected to the bus via the adapter.

 
action_zoom_plus_stroke RS-485 Power Adapter, connectors and switch

RS-485 Power Adapter, connectors and switch

The adapter is equipped with dual RJ45 ports, a 4-position removable screw terminal block, and a 2-pole slide switch.

The RJ45 ports are marked IN PORT and OUT PORT. You use the IN PORT to connect the adapter to the controller when you want to convert the controller RS-485 RJ45 port to screw terminals for connection to a Modbus RTU network. You use both ports to connect the adapter to Sensor Bus or Room Bus (IN PORT toward the controller) when you want to connect an external 24 VDC power supply to the bus.

The screw terminal block allows connection either to a Modbus RTU network or to an external 24 VDC power supply.

The switch allows the choice to inject 24 VDC via the adapter to the RS-485 bus either from an external 24 VDC power supply or from the RP or MP controller RS-485 port. The switch positions are marked EXT and INT. You move the switch to EXT (External) to use an external 24 VDC power supply to power devices on Sensor Bus or Room Bus. You move the switch to INT (Internal) to use the RP or MP controller to supply 24 VDC (3 W or 2 W) to devices on a Modbus RTU network. If the Modbus devices do not need power supply from the controller, the 24 VDC terminal on the adapter is left unconnected.

To connect the adapter to the controller and/or the bus, it is recommended to use Cat 5 (or higher) UTP cable(s) with eight conductors and RJ45 connectors, a cross-sectional area of 22 to 26 AWG (0.34 to 0.14 mm 2 ), and a rating that meets the requirements of the target environment. The cable(s) are not included and need to be purchased separately.

The total length of the bus, from the controller to the end of the bus, should not exceed the following limits:

  • Sensor Bus: 61 m (200 ft)

  • Room Bus and Modbus: 72 m (236 ft)

The adapter has a protruding bracket on each long side with a mounting hole to facilitate installation of the device with two screws (not included). The device can also be fastened using cable ties or mounted in line with a cable run. The adapter has two anchor points that can be used to fasten cable ties or other accessories for bundling wires. The adapter is suitable for plenum use.

Table: Part Numbers

Product

Part number

Isolated RS-485 adapter
SXWISORS48510001
Non-isolated RS-485 adapter
SXWNISORS48510001
RS-485 power adapter
SXWNISORS485P10001

Specifications

Electrical
Isolated RS-485 Adapter
DC input supply voltage
24 VDC (powered by the BACnet/IP controller)
Maximum power consumption
0.4 W
Non-isolated RS-485 Adapter
DC input supply voltage
0 V
Maximum power consumption
0 W
RS-485 Power Adapter – Required external power supply ratings
Output
Regulated 24 VDC
  
Isolated (non-grounded) terminals
Safety class and certification
IEC protection class II
  
Safety agency certification applicable to the country or area where used
Output power
Minimum 3 W (125 mA)
  
Maximum 100 W or 100 VA
Maximum out port bus load
3 W
Environment
All device models
Ambient temperature, operating
0 to 50 °C (32 to 122 °F)
Ambient temperature, storage
-40 to +70 °C (-40 to +158 °F)
Humidity
Maximum 95 % RH non-condensing
Material
All device models
Plastic flame rating
UL94 V-0
Plenum rating
UL 2043
Ingress protection rating
IP 20
Mechanical
Isolated RS-485 Adapter
Dimensions
See drawing below
 
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Weight
80 g (2.82 oz)
Installation on RP-C Advanced, RP-C Pro, or RP-V Advanced
Connection to RS-485 Com B
  
via Cat 5 UTP cable (not included) a
Installation on MP-V
Connection to RS-485 Com A
  
via Cat 5 UTP cable (not included) a
Installation on MP-C Pro or RP-C Pro Plus
Not supported
Installation options
The adapter can be fastened using screws or cable ties or mounted in line with a cable run. a
  
Approved for plenum installation (UL 2043)
Maximum Cat 5 UTP cable length
0.3 m (12 inches)
Non-isolated RS-485 Adapter
Dimensions
See drawing below
 
action_zoom_plus_stroke
Weight
40 g (1.41 oz)
Installation on RP-C Advanced, RP-C Pro, or RP-V Advanced
Connection to RS-485 Com A or Com B
  
via Cat 5 UTP cable (not included) a
Installation on MP-V, MP-C Pro, EasyLogic RP-C, or EasyLogic RP-V
Connection to RS-485 Com A
  
via Cat 5 UTP cable (not included) a
Installation on RP-C Pro Plus
Connection to RS-485 Com A, Com B, or Com C
  
via Cat 5 UTP cable (not included) a
Installation options
The adapter can be fastened using screws or cable ties or mounted in line with a cable run. a
  
Approved for plenum installation (UL 2043)
Maximum Cat 5 UTP cable length
0.3 m (12 inches)
RS-485 Power Adapter
Dimensions
See drawing below
 
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Weight
24 g (0.84 oz)
Installation
Connection to RS-485 bus via Cat 5 UTP cable (not included) a
Installation options
The adapter can be fastened using screws or cable ties or mounted in line with a cable run. a
  
Approved for plenum installation (UL 2043)
Agency compliances
All device models
Emission
RCM; BS/EN 61000-6-3; BS/EN IEC 63044-5-2; FCC Part 15, Sub-part B, Class B
Immunity
BS/EN 61000-6-2; BS/EN IEC 63044-5-3
Safety standards
BS/EN 60730-1; BS/EN 60730-2-11; BS/EN IEC 63044-3; UL 916 C-UL US Listed a
Fire performance in air-handling spaces a
UL 2043
Hardware
Isolated RS-485 Adapter
Connectors
RS-485, 4-pole removable screw terminal block
  
RS-485, RJ45 port
Non-isolated RS-485 Adapter
Connectors
RS-485, 4-pole removable screw terminal block
  
RS-485, RJ45 port
RS-485 Power Adapter
Connectors
RS-485, 4-pole removable screw terminal block
  
RS-485, dual RJ45 ports
Transceiver type
Failsafe
  
Isolated
External biasing
Determined by external network
Total Unit Load (UL) per device
0.18 UL
Switch
2-pole slide switch

Table: Support and Use of RS-485 Adapters for Connection to a BACnet MS/TP Network

BACnet/IP Controller - Reconfigured for MS/TP a

Isolated RS-485 Adapter

(RS-485 port on controller b )

Non-isolated RS-485 Adapter

(RS-485 port on controller b )

RS-485 Power Adapter

(RS-485 port on controller b )

RP-C Advanced

(Controllers with BACnet MS/TP support) c

yes d

(Com B)

yes d

(Com A or Com B)

no e

RP-C Pro

yes

(Com B)

yes

(Com A or Com B)

no e

RP-C Pro Plus

no

yes

(Com A, Com B, or Com C)

no e

MP-V

(Controllers with BACnet MS/TP support) f

yes g

(Com A)

yes g

(Com A)

no e

MP-C Pro

no

no

no

  1. For RP-C Advanced, RP-C Pro, and MP-V, the BACnet MS/TP support requires EcoStruxure Building Operation version 4.0.2 or later. For RP-C Pro Plus, version 5.0.1 or later is required. For MP-C Pro, BACnet MS/TP is not supported.
  2. RS-485 port(s) on the controller supporting connection to the adapter.
  3. Controllers with part numbers: SXWRCF12A10002, SXWRCF12B10002, SXWRCF12C10002, and SXWRCF16A10003.
  4. Not supported by controllers with part numbers: SXWRCF12A10001, SXWRCF12B10001, SXWRCF12C10001, and SXWRCF16A10002.
  5. The RS-485 Power Adapter should not be used to connect an MP or RP controller to a BACnet MS/TP network as it can cause ground loops and poses a risk of miswiring of 24 VDC and bias terminals.
  6. Controllers with part numbers: SXWMPV7AX10002 and SXWMPV9AX10002.
  7. Not supported by controllers with part numbers: SXWMPV7AX10001 and SXWMPV9AX10001.

Table: Support and Use of RS-485 Adapters for Connection to a Modbus RTU Network

Controller - Configured for Modbus

Isolated RS-485 Adapter

(RS-485 port on controller a )

Non-isolated RS-485 Adapter

(RS-485 port on controller a )

RS-485 Power Adapter

(RS-485 port on controller a )

RP-C Advanced

(Controllers with BACnet MS/TP support) b

yes c

(Com B)

yes c

(Com A or Com B)

yes

(Com A or Com B)

RP-C Pro

yes

(Com B)

yes

(Com A or Com B)

yes

(Com A or Com B)

RP-C Pro Plus

no

yes

(Com A, Com B, or Com C d )

yes

(Com A, Com B, or Com C c )

RP-V Advanced

yes

(Com B)

yes

(Com A or Com B)

yes

(Com A or Com B)

MP-V

(Controllers with BACnet MS/TP support) e

yes f g

(Com A)

yes fg

(Com A)

yes fg

(Com A)

MP-C Pro

no

yes f

(Com A)

yes f

(Com A)

EasyLogic RP-C

no

yes

(Com A)

yes

(Com A)

EasyLogic RP-V

no

yes

(Com A)

yes

(Com A)

EasyLogic MP-C

no

no

no

  1. RS-485 port(s) on the controller supporting connection to the adapter. A separate Cat 5 UTP cable is required to connect the adapter to the controller. The cable is not included and needs to be purchased separately. Maximum cable length: 0.3 m (12 inches).
  2. Controllers with part numbers: SXWRCF12A10002, SXWRCF12B10002, SXWRCF12C10002, and SXWRCF16A10003.
  3. Not supported by controllers with part numbers: SXWRCF12A10001, SXWRCF12B10001, SXWRCF12C10001, and SXWRCF16A10002.
  4. The RS-485 Com C port is by default configured for Modbus.
  5. Controllers with part numbers: SXWMPV7AX10002 and SXWMPV9AX10002.
  6. For MP-V and MP-C Pro, the Modbus support requires EcoStruxure Building Operation version 5.0.1 or later.
  7. Not supported by controllers with part numbers: SXWMPV7AX10001 and SXWMPV9AX10001.

Table: Support and Use of RS-485 Power Adapter for Power Injection on Sensor Bus

Controller

RS-485 Power Adapter

(RS-485 port on controller a )

RP-C Advanced

yes

(Com A b or Com B)

RP-C Pro

yes

(Com A b or Com B)

RP-C Pro Plus

yes

(Com A b , Com B, or Com C)

RP-V Advanced

yes

(Com A b or Com B)

MP-V

yes

(Com A b )

MP-C Pro

yes

(Com A b )

EasyLogic RP-C

yes

(Com A b )

EasyLogic RP-V

yes

(Com A b )

EasyLogic MP-C

no

  1. RS-485 port(s) on the controller supporting connection to Sensor Bus.
  2. The RS-485 Com A port is by default configured for Sensor Bus.

Table: Support and Use of RS-485 Power Adapter for Power Injection on Room Bus

Controller

RS-485 Power Adapter

(RS-485 port on controller a )

RP-C Advanced

yes

(Com A or Com B b )

RP-C Pro

yes

(Com A or Com B b )

RP-C Pro Plus

yes

(Com A, Com B b , or Com C)

RP-V Advanced

yes

(Com A or Com B b )

MP-V

no

MP-C Pro

no

EasyLogic RP-C

no

EasyLogic RP-V

no

EasyLogic MP-C

no

  1. RS-485 port(s) on the controller supporting connection to Room Bus.
  2. The RS-485 Com B port is by default configured for Room Bus.
  • SpaceLogic™ RS-485 Adapter
  • SpaceLogic™ RS-485 Power Adapter
  • RS-485 Adapters
  • RS-485 Communications