Description

ABB CI855 MasterBus 300 Communication Interface

The ABB CI855, also cataloged as the CI855 MasterBus 300 Communication Interface, provides MB 300 communication between AC 800M controllers and existing MasterBus 300 based controllers within System 800xA installations. The interface connects to the CEX-Bus through the TP853 baseplate and supports redundant Ethernet line connections.

Hardware Specifications

Parameter	Specification
Model	CI855
Brand	ABB
Product Type	MasterBus 300 Communication Interface
Article Number	3BSE018106R1
Communication Protocol	ABB MasterBus 300
Master or Slave	Master
Transmission Speed	10 Mbit/s, 200 datasets/s
Line Redundancy	Yes
Module Redundancy	No
Hot Swap	Yes
Used Together with HI Controller	Yes
Maximum Units on CEX-Bus	12
Baseplate	TP853
Connector	RJ-45 female, 8-pin
Ethernet Ports	2
Network Redundancy	Supported through two Ethernet ports
Power Consumption	Typical 150 mA at 24 V
Operating Temperature	0 deg C to +55 deg C
Storage Temperature	-40 deg C to +70 deg C
Corrosion Protection	G3 compliant to ISA 71.04
Protection Class	IP20 according to EN 60529 and IEC 529
CE Marking	Yes
Marine Certificates	BV, DNV-GL, LR
RoHS Compliance	EU RoHS, UAE RoHS, CN RoHS
WEEE Compliance	Directive 2012/19/EU
Width	59 mm
Height	185 mm
Depth	127.5 mm
Weight Including Base	700 g
Origin	ABB manufacturing origin not specified in the supplied data

MasterBus 300 Communication and Industrial Network Integration

The CI855 implements ABB MasterBus 300 communication within the AC 800M controller environment. It connects through the CEX-Bus and uses the TP853 baseplate for physical installation and Ethernet network connections.

The interface operates as an MB 300 master and supports a transmission speed of 10 Mbit/s with up to 200 datasets/s. Furthermore, line redundancy supports redundant network communication, while module redundancy is not specified for the CI855.

The interface allows peer-to-peer communication between System 800xA plant sections using AC 800M controllers and existing MB 300 based controller sections. Supported legacy controller platforms include Advant Controller 410, Advant Controller 450, and MasterPiece 200/1.

For ABB industrial control architectures, the CEX-Bus provides the local communication path between the AC 800M controller and the CI855 interface. The specified maximum is 12 units on the CEX-Bus.

Frequently Asked Questions (FAQ)

Q: Does the CI855 support hot swapping?
A: Yes. The supplied specifications identify the CI855 as supporting hot swap operation. Site procedures should still follow the applicable AC 800M and System 800xA maintenance requirements.

Q: Does the CI855 provide module redundancy?
A: No. The supplied data specifies line redundancy as supported, while module redundancy is specified as not supported.

Q: How does the CI855 connect to the MB 300 network?
A: The CI855 uses the TP853 baseplate, which provides two RJ-45 Ethernet connectors. The two ports support network redundancy within the MB 300 communication arrangement.

Field Installation Guidelines

• Mount the TP853 baseplate on a suitable DIN rail with adequate mechanical clearance.
• Install the CI855 onto the baseplate according to the AC 800M hardware installation procedure.
• Connect the CEX-Bus interface through the designated baseplate connection.
• Use the specified RJ-45 Ethernet interfaces for MB 300 network connections.
• Route communication cables separately from high-voltage and high-current power wiring where practical.
• Maintain appropriate cable bend radius and prevent excessive mechanical loading on RJ-45 connectors.
• Apply the site grounding and shielding practices specified for the System 800xA installation.
• Verify the redundant network topology before placing the CI855 into service.
• Confirm the CEX-Bus unit count remains within the specified maximum of 12 units.
• Check ambient temperature and enclosure conditions against the specified 0 deg C to +55 deg C operating range.
• For corrosive environments, verify that the installation conditions remain within the stated G3 corrosion classification.
• Perform communication diagnostics after installation before connecting the interface to operational MB 300 controller sections.

Specifications

• Brand: ABB

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems