The Field Communication Unit (FCU) is a data concentrator that continuously polls data from field devices such as radar and servo tank gauges from different vendors, data acquisition units, I/O Modules, other FCU:s, Enraf® CIU:s etc and stores data in a buffer memory.
The FCU can service requests from a wide range of hosts / DCS systems such as Rosemount TankMaster, Enraf® Entis, Yokogawa®, ABB®, Honeywell®, Foxboro®, among others (it is possible to connect any system using Modbus protocol).
The FCU 2165 has 10 ports and the FCU 2175 can be ordered with 8, 16, 24 or 32 ports. Each of the ports can be configured either as a master or slave connection, providing ultimate configuration flexibility.
The number of devices per port varies between different manufacturers and may also have physical limitations. Maximum 256 devices can be supported by one FCU 2165/2175.
Technical Data
Explosion protection:
None.
Ambient operating temperature:
-20 to +70 °C (-4 to +158 °F).
Power supply:
115 or 230 VAC, +10% to -15%, 50-60 Hz.
Power consumtion:
25 W (FCU 2165), 60 W (FCU 2175).
Ingress protection:
IP 65 (FCU 2165), IP 21 (FCU 2175).
Field bus / Host ports:
TRL/2 Bus, Enraf® BPM, Whessoe® Current Loop, RS232, RS422, RS485.
Baud rate:
Programmable up to 38400.
Total number of gauges per field bus port:
Dependent of vendor, see the FCU2165/2175 Product Sheet.
Number of tanks / gauges per FCU: Up to 256 (Host dependant, see the FCU2165/2175 Product Sheet).
Dimensions FCU 2165: 111x313x404 mm (4.37x12.32x15.91 in.)
Configuration Possibilities
As a master (field bus) port the FCU can talk to a wide range of different tank gauges such as: Rosemount TankRadar®, Enraf® Servo and Radar,
Whessoe® Servo Level/Temperature Transmitter and Motherwell®.
As a slave port the FCU can service requests from a wide range of hosts using various protocols: Rosemount TankMaster®, Modbus RTU and Enraf® Entis.