The FBM215 drives HART field instruments with both analog current signals and digital HART communication. Each of the eight output channels is galvanically isolated from others and from ground. This design prevents cross-channel interference and protects against ground loops.
Moreover, the FBM215 supports HART instruments compliant with Versions 5, 6, or 7. Communication is point-to-point in master/slave mode at 1200 baud. Error checking includes parity on each byte plus one CRC check byte on each message. The module processes up to 2 messages per second.
The FBM215 delivers analog accuracy of ±0.05% of span between 4 mA and 20 mA. This includes linearity errors. Resolution is 13 bits, providing fine control over output values. Maximum output load is 750 Ω. The module can change output at a maximum rate of 20 mA in 60 milliseconds.
Each channel is individually galvanically isolated using optical and transformer isolation. The FBM215 withstands, without damage, a potential of 600 V AC applied for one minute between isolated channels and earth ground. This makes it suitable for demanding industrial environments.
Maximum distance from the FBM215 to field device meets HART FSK physical layer specification HCF_SPEC-54. This allows up to 3030 meters (10000 feet) of cable length. However, the distance decreases when operating through an intrinsic safety barrier.
All analog outputs are limited by design to about 25 mA. If the output FET shorts, the output current could increase up to 100 mA. In normal operation, the FBM215 outputs a constant current into a 0 to 750 Ω load. Each channel is current limited and voltage regulated.
Loop power supply protection ensures reliable operation. The module's design prioritizes safety and equipment protection. For critical applications, consider redundant module configurations.
Power input accepts 24 V DC with +5% tolerance. Maximum consumption is 7 W, while heat dissipation is only 5 W maximum. This makes the FBM215 efficient for continuous operation.
Calibration of the module and termination assembly (TA) is not required. This saves significant maintenance time and reduces downtime. Simply install, configure, and commission the module.
Operating temperature for the FBM215 module ranges from -20°C to +60°C (-4°F to +140°F). The termination assembly handles -20°C to +70°C (-4°F to +158°F). Storage temperature extends from -40°C to +70°C (-40°F to +158°F). Relative humidity is 5% to 95% non-condensing.
The FBM215 is suitable for Class G3 harsh environments as defined in ISA Standard S71.04. Vibration tolerance is 0.75g from 5 to 500 Hz. Altitude ranges from -300 to +3,000 meters for operation.
For regulatory compliance, the module meets European EMC Directive 2014/30/EU. It also complies with EN61326-1:2013 Class A emissions and industrial immunity levels. Product safety includes UL/UL-C listing for Class I, Groups A-D, Division 2, temperature code T4. DEMKO certification supports Ex nA IIC T4 for Zone 2 installations.
Mount the FBM215 in the appropriate Foxboro 200 Series chassis. Connect the termination assembly according to HART FSK physical layer specifications. Use shielded twisted-pair cables for field wiring. Keep cable lengths within the 3030-meter limit for standard installations.
For installations with intrinsic safety barriers, calculate the maximum distance carefully. The distance depends on compliance voltage (19 V DC at 20.4 mA), wire resistance, load resistance, and voltage drop at the field device.
Configure each channel individually in software. Download the appropriate I/O driver from the Foxboro library. Commission each output channel and verify both analog and HART communication.
FBM215 HART Output Interface Module (1 unit)
Termination assembly with mounting hardware
Screw terminal blocks for field wiring (8 channels)
Grounding lug and identification labels
Quick installation guide
Note: No certificates or warranty documents are included in this package.
We ship all orders via Fedex, UPS, or DHL. Tracking numbers are provided within 24 hours after dispatch.
1. Does the FBM215 require periodic calibration?
No, the FBM215 does not require calibration of the module or termination assembly. This feature reduces maintenance costs and eliminates calibration downtime.
2. What happens if the output FET fails shorted?
If the output FET shorts, output current could increase up to 100 mA. Under normal operation, the FBM215 limits output to about 25 mA. For safety-critical applications, use redundant module configurations.
3. Can the FBM215 drive loads higher than 750 Ω?
The FBM215 specifies a maximum output load of 750 Ω. Exceeding this value may cause incorrect operation or reduced accuracy. Always verify your loop resistance before commissioning.
4. What is the maximum communication distance to a HART device?
Standard distance reaches 3030 meters (10,000 feet) when meeting HART FSK specification HCF_SPEC-54. However, this distance decreases with intrinsic safety barriers. Calculate based on compliance voltage and total loop resistance.
5. Which software versions support the FBM215?
The FBM215 requires I/A Series software v8.2 to v8.8. It also works with Foxboro Evo Control Core Services v9.0 or later. Always check your system compatibility before ordering.
| Brand Name | Foxboro |
| Model No. | FBM215 |
| Product Type | Output Interface Module |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
