FOXBORO FBM237

Description

FOXBORO FBM237 is a channel isolation output interface module produced by Foxboro(now acquired by Schneider Electric),mainly used in industrial automation control systems.The following is a detailed introduction to the product:

1.Main features

Channel isolation:FBM237 provides 8 isolated 0 to 20mA DC analog output channels,each channel is electrically isolated to prevent interference and fault propagation between circuits.

Redundancy function:The module has redundancy function,which can improve the reliability and stability of the system.

Output processing:The output processing delay is 30 milliseconds,and the output range is 0 to 20.4mA DC per channel.The best heat dissipation at 24V DC is 3.5W(maximum 5W).

Design structure:FBM237 has a compact design and adopts a sturdy pressed aluminum housing to provide physical protection for electronic circuits.The cabinet is specially designed to provide installation protection for FBM in various environments,even meeting the protection requirements in harsh environments defined by ISA standard S71.04.

Signal conversion:FBM237 can perform signal conversion functions,converting electrical signals from field sensors into optional redundant fieldbus signals.

Setting options:Conversion time,fail-safe configuration(hold/return)and fail-safe return data of analog output(based on each channel)are provided.

High accuracy:Each channel uses a Sigma-Delta data conversion,scanned every 25 milliseconds,and a configurable moving average filter can remove any process noise and power line frequency interference.

FOXBORO FBM237

2.Physical and installation characteristics

Indicator:The light-emitting diode LED installed on the panel indicates the working status of the fieldbus component.

Pluggability:The component can be plugged/replaced at will without removing the terminal cable,power supply and communication cable of the field device.

Communication:Communication with the control station is through an optional redundant 10Mbps Ethernet fieldbus.The fieldbus communication component FCM is used to convert between the 2Mbps communication protocol used by FBM and the 10Mbps communication protocol used by Ethernet fieldbus.

Baseboard installation:FBM237 is installed on a DIN mounting baseboard,which can be installed with 8 fieldbus components.The baseplate can be mounted on a DIN rail or rack,and is equipped with redundant fieldbus connection sockets,independent DC sockets and I/O cable sockets.

FOXBORO FBM237

3.Electromagnetic compatibility and safety certification

Electromagnetic compatibility(EMC):Complies with the European EMC Directive 89/336/EEC,including the EN 50081-1 radiation standard and the EN 50082-2 immunity standard.It also meets multiple immunity standards of the IEC 61000-4 series.

Product safety:Complies with the European Low Voltage Directive 73/23/EEC.It has also obtained UL/UL-C,CENELEC and other certifications,is applicable to all EU indicators,including the explosive gas(ATEX)indicator 94/9/EC,and has a CE mark.

4.Environmental requirements

Operating temperature:-20 to+70℃(-4 to+158℉).

Relative humidity:5 to 95%(non-condensing).

Altitude:-300 to+3000m(-1000 to+10000ft)(operating),-300 to+12000m(-1000 to+40000ft)(storage).

V.Physical Specifications

Weight:Approximately 284g(10oz).

Dimensions:Height 102mm(4in)(including mounting plate 114mm/4.5in),width 45mm(1.75in),depth 104mm(4.11in).

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