FOXBORO FBM218 P0922VW HART Communication Redundant Output Interface Module

The FBM218 is a robust and reliable redundant output interface module designed to support a mix of standard 4 to 20 mA and HART digital communication signals. It offers eight channel-isolated output channels that enable highly flexible integration into industrial systems, supporting a variety of HART field devices with redundancy at the Fieldbus Module (FBM) level.

Key Features

Output Channels:
- 8 isolated output channels supporting:
  - Standard 4 to 20 mA analog output signals.
  - Digital HART Frequency Shift Keying (FSK) signals superimposed on the 4 to 20 mA output.
Redundancy:
- Module pair provides redundancy at the FBM level for continuous operation. One module acts as the Master, and the other as the Tracker.
HART Communication:
- Dedicated FSK modem per output channel for bi-directional communication with HART field devices.
- Supports HART universal, common practice, and device-specific commands (without burst communication mode).
Galvanic Isolation:
- Channel-to-channel isolation and isolation from ground and module logic to ensure safe and noise-immune operation.
High Accuracy:
- Analog accuracy of ±0.05% of span between 4 mA and 20 mA.
- 13-bit resolution for fine output control.
- Maximum Rate of Change: 20 mA in 60 milliseconds.
Compact and Rugged Design:
- Enclosure suitable for Class G3 (harsh) environments, adhering to ISA Standard S71.04.
Termination Assemblies (TAs):
- Local or remote field wiring connections supported through flexible TAs.

Functional Specifications

Specification	Details
Field Device Channels	8 isolated output channels, configurable for analog or HART signal outputs
Supported HART Versions	Compliant with HART v5, v6, or v7 protocols
Communication Mode	Point-to-point, master/slave, asynchronous, half-duplex, 1200 baud
Error Checking	Parity on each byte and 32-bit CRC error checking on messages
Output Accuracy	±0.05% of span (between 4 mA and 20 mA)
Output Load	750 Ω maximum
Maximum Rate of Change	20 mA in 60 milliseconds
Output Resolution	13 bits
Maximum Distance (FBM218 to Device)	Up to 3030 meters (10,000 ft), compliant with HART FSK physical layer specification
Loop Power Supply Protection	Galvanically isolated, current-limited, and voltage-regulated
Fieldbus Communication	Redundant 2 Mbps HDLC communication to associated FCM or FCP
Power Supply	24 V DC ±5% (redundant), 7 W maximum power consumption
Heat Dissipation	5 W maximum

Environmental Specifications

Operating Conditions	Module	Termination Assembly
Temperature	-20 to +70°C (-4 to +158°F)	PVC: -20 to +50°C (-4 to +122°F)
Humidity	5% to 95% (non-condensing)	5% to 95% (non-condensing)
Altitude	-300 to +3000 m (-1,000 to +10,000 ft)	-300 to +3000 m (-1,000 to +10,000 ft)

Storage Conditions	Module	Termination Assembly
Temperature	-40 to +70°C (-40 to +158°F)	-40 to +70°C (-40 to +158°F)
Humidity	5% to 95% (non-condensing)	5% to 95% (non-condensing)
Altitude	-300 to +12,000 m (-1,000 to +40,000 ft)	-300 to +12,000 m (-1,000 to +40,000 ft)

Mounting and Physical Specifications

Mounting	Details
Module Mounting	Mounts on a baseplate; can be mounted on a DIN rail (horizontally or vertically) or a 19-inch rack.
Termination Assembly Mounting	Mounts on DIN rail (32 mm or 35 mm).

Dimensions	Module	Termination Assembly
Height	102 mm (4 in)	–
Width	45 mm (1.75 in)	–
Depth	104 mm (4.11 in)	–
Weight	284 g (10 oz)	Compression: 181 g (0.40 lb) Ring Lug: 249 g (0.55 lb)

Part Numbers and Accessories

Part Number	Description
P0922VW	FBM218 Module
P0916QD	Redundant Adapter
Termination Assemblies	See “Functional Specifications – Termination Assemblies” for details
Termination Cables	Up to 30 m (98 ft), materials: Polyurethane or Low Smoke Zero Halogen (LSZH)

Field Termination Connections

Connection Type	Wiring Sizes
Compression-type	0.2 to 4 mm² / 24 to 12 AWG
Stranded with Ferrules	0.2 to 2.5 mm² with or without collar
Ring Lug	#6 size connectors (0.375 in) for 0.5 to 4 mm² / 22 AWG to 12 AWG