FOXBORO FBM239 Discrete 16DI/16DO Module

FOXBORO FBM239 Discrete 16DI/16DO Module

DESCRIPTION

The FBM239 Discrete 16DI/16DO Module provides 16 digital inputs with sixteen digital output channels. Associated Termination Assemblies (TAs) and Termination Assembly Adapters (TAAs) provide for discrete nominal inputs of 30 V dc, 60 V dc, 120 V ac/125 V dc or 240 V ac and nominal outputs of 60 V dc, 120 V ac/125 V dc or 240 V ac. The module performs signal conversion required to interface the electrical input signals from the field sensors to the Module Fieldbus.

Depending on the type of I/O signal required, the TAs or TAAs support current limiting devices, high voltage attenuation circuits, optical isolation and external power source connections.

FEATURES

Key features of the FBM239 are:

 Sixteen digital input channels, used for either contact sensing, or DC voltage monitoring 

 Sixteen digital output channels, used for either DC output switching with an external source (e.g. to control powering of various external loads), or DC output switching with an internal source only (e.g. to power external solid state relays or other similar devices) 

 Rugged design suitable for enclosure in Class G3 (harsh) environments 

 Supports discrete input signals at voltages of: 

• 30 V dc/60 V dc 

• 120 V ac/125 V dc 

• 240 V AC 

 Supports output switching at voltages of: 

• 60 V DC 

• 120 V AC/125 V DC 

• 240 V AC 

 Executes the programs for Digital I/O (ECB5), and Ladder Logic (ECB8) 

 Various Termination Assemblies (TAs) provide for per-channel isolation and 100 Series I/O upgrade, and contain: 

• High voltage attenuation and optical isolation for inputs 

• External power connection for device excitation 

• Output current limiting.

STANDARD DESIGN

FBM239 has a rugged extruded aluminum exterior for physical protection of the circuits. Enclosures specially designed for mounting the FBMs provide various levels of environmental protection, up to harsh environments, per ISA Standard S71.04.

VISUAL INDICATORS

Light-emitting diodes (LEDs) incorporated into the front of the module provide visual indication of the Fieldbus Module operational status, as well as the discrete states of the individual input/output points.

EASY REMOVAL/REPLACEMENT

The module can be removed/replaced without removing field device termination cabling, power, or communication cabling.

FIELDBUS COMMUNICATION

A Fieldbus Communications Module or a Control Processor interfaces to the 2 Mbps module Fieldbus used by the FBMs. The FBM239 accepts communication from either path (A or B) of the 2 Mbps Fieldbus —should one path fail or be switched at the system level, the module continues communication over the active path

MODULAR BASEPLATE MOUNTING

The module mounts on a DIN rail mounted baseplate, which accommodates up to four or eight Fieldbus Modules. The Modular baseplate is either DIN rail mounted or rack mounted, and includes signal connectors for redundant Fieldbus, redundant independent DC power, and termination cables.

FUNCTIONAL SPECIFICATIONS

Input/Output Channels：16 group isolated digital input channels and 16 group isolated digital output channels

Filter/Debounce Time：Configurable (No Filtering, 4, 8, 16 or 32 ms)

INPUT：30 V DC maximum applied voltage

ON-STATE VOLTAGE：15 to 30 V DC

OFF-STATE VOLTAGE：0 to 5 V DC

CONTACT SUPPLY：24 V DC nominal (supplied by FBM through the TA)

CONTACT CURRENT：1.8 mA DC nominal

APPLIED VOLTAGE (EXTERNAL)：60 V dc maximum

INPUT VOLTAGE RANGE：24 V dc +5%, -10%

MODULE CONSUMPTION：2.65 W (maximum) at 24 V dc