The Foxboro FBM202 P0916AC is a DIN rail-mounted passive termination assembly designed to interface eight isolated thermocouple/mV analog input signals with an FBM202 module within the Foxboro I/A Series and Foxboro Evo DCS platforms. The P0916AC termination assembly incorporates a 4-wire 100 ohm platinum RTD (IEC 751, Class B) to provide cold-junction reference temperature compensation for accurate thermocouple measurements. Each input channel on the associated FBM202 module provides galvanic isolation from other channels and ground, supporting standard thermocouple types B, E, J, K, N, R, S, T, and millivolt input signals. Signal processing involves per-channel Sigma-Delta A/D conversion, upscale thermocouple burnout detection, and configurable integration periods. The P0916AC termination assembly connects to the baseplate-mounted FBM202 module via a removable Type 2 termination cable, conveying field signals to the module and communicating via the redundant 2 Mbps module Fieldbus to Fieldbus Communication Modules or Control Processors.
Features
Eight-channel field I/O feedthrough connection with channel-to-channel galvanic isolation
Integrated 4-wire 100 ohm platinum RTD (IEC 751, Class B) for reference junction compensation
Compression screw terminal connections accepting 0.2 to 4 mm2 (24 to 12 AWG) field wiring
Polyvinyl chloride (PVC) housing construction rated for -20 to +50 degC operating temperatures
Passive feedthrough interface supporting Type 2 termination cables up to 30 m in length
DIN rail mounting design compatible with 32 mm and 35 mm DIN rails
High-accuracy performance utilizing per-channel Sigma-Delta A/D conversion on the FBM202
Applications
Thermocouple signal interfacing for DCS temperature loops
Process temperature monitoring with cold junction compensation
Millivolt input processing for industrial automation systems
Replacement and upgrade of Foxboro 100 Series FBM02 field wiring setups
Ordering Information
Part Number
Description
Material
Connection Type
P0916AC
Eight-channel thermocouple/mV passive feedthrough TA with RTD
PVC
Compression
P0916AD
Eight-channel thermocouple/mV passive feedthrough TA with RTD
PVC
Ring Lug
P0916XH
Eight-channel thermocouple/mV passive feedthrough TA with RTD
PA
Compression
P0917JL
Eight-channel thermocouple/mV passive feedthrough TA with RTD
PA
Ring Lug
P0928CN
Baseplate-mounted TA for two sets of eight thermocouple/mV channels
PC/ABS
Compression
Technical Specifications
Category
Specification
Parameter / Value
General
Manufacturer
Foxboro by Schneider Electric
Part Number
P0916AC
Compatible Module
FBM202 (P0926EQ)
Input Specifications
Channels
8 isolated thermocouple/mV input channels
Input Range
-10.5 to +69.5 mV dc (0 to 64000 raw counts); Full range: 71.419 mV (65535 raw counts)
Thermocouple Types
B, E, J, K, N, R, S, T and other millivolt signals
Differential Input Impedance
10 Mohm
Burnout Detection
Full upscale value
Common Mode Voltage
Up to 30 V ac or 60 V dc
Accuracy & Performance
Millivolt Input Accuracy
+0.03% of span (+-27 uV) at 25 degC
RTD Channel Accuracy
+0.03% of span
RTD Reference Junction Conformity
+-0.25 degC
Thermocouple Conformity
+0.25 degC
Accuracy Temperature Coefficient
+-50 ppm/degC
RTD Reference Junction Measurement Accuracy
+-0.50 degC (using RTD internal to Foxboro TAs)
Reference Junction Type
4-wire 100 ohm platinum RTD (IEC 751, Class B)
Electrical Isolation
Channel Isolation
Galvanic isolation per channel; withstands 600 V ac for 1 minute between channel and ground or channel to channel
Environmental
Operating Temperature (PVC TA)
-20 to +50 degC (-4 to +122 degF)
Storage Temperature
-40 to +70 degC (-40 to +158 degF)
Relative Humidity
5 to 95% (noncondensing)
Altitude
-300 to +3,000 m (-1,000 to +10,000 ft) operating
Contamination
Class G3 (Harsh) per ISA Standard S71.04
Mechanical
TA Material
Polyvinyl Chloride (PVC)
Termination Type
Compression screw terminals
Compression Accepted Wiring Sizes
Solid/Stranded: 0.2 to 4 mm2 / 24 to 12 AWG; Stranded with Ferrules: 0.2 to 2.5 mm2
Weight (Compression TA)
159 g (0.35 lb) approximate
Dimensions (Compression TA)
125 mm x 76 mm x 72 mm (4.93 in x 2.99 in x 2.83 in)
Connections/Interfaces
Connector Pin / Terminal
Function
Field Termination Compression Screw
Direct connection for 8 two-wire thermocouple/mV analog input field signals
Internal RTD Connection
Connections to the integral 4-wire 100 ohm platinum RTD for reference junction compensation
Cable Interface
25-pin D-subminiature connector linking to the FBM baseplate via Type 2 cable
Installation Guidelines
DIN Rail Mounting: Mount the P0916AC termination assembly on standard 32 mm or 35 mm DIN rails.
Cable Connection: Connect the 25-pin D-subminiature end of the Type 2 termination cable to the TA and the 37-pin D-subminiature end to the FBM202 baseplate slot.
Field Wiring: Insert field wiring into compression screw terminals accepting 0.2 to 4 mm2 (24 to 12 AWG) solid or stranded conductors.
Hazardous Area Limits: Ensure field wiring voltages do not exceed 30 V ac or 60 V dc to prevent electrical safety code violations and shock hazards.
Environmental Enclosure: Install in appropriate enclosures when operating in Class G3 harsh environments to comply with environmental ratings.
Compliance and Certifications
UL/UL-C: UL/UL-C listed as suitable for use in Class I, Groups A-D, Division 2, temperature code T4 hazardous locations.
ATEX / CENELEC: CENELEC (DEMKO) certified EEx nA IIC T4 for use in Zone 2 potentially explosive atmospheres.
FAQ
What is the Foxboro P0916AC used for?
The Foxboro P0916AC is a DIN rail-mounted compression termination assembly used to interface eight thermocouple or millivolt input signals to a Foxboro FBM202 module in I/A Series and Foxboro Evo DCS systems.
Which module is compatible with the P0916AC termination assembly?
The P0916AC termination assembly is specifically designed to connect with the Foxboro FBM202 Thermocouple/mV Input Module.
How does the device handle reference junction compensation?
The device includes an integral 4-wire 100 ohm platinum RTD (IEC 751, Class B) directly on the termination assembly for cold-junction temperature compensation.
What wire sizes are supported by the module terminals?
The compression terminals on the P0916AC accept solid or stranded conductors from 0.2 to 4 mm2 (24 to 12 AWG), and stranded conductors with ferrules from 0.2 to 2.5 mm2.
What hazardous area certifications apply to the P0916AC?
The P0916AC is UL/UL-C listed for Class I, Division 2, Groups A-D (T4) and CENELEC (DEMKO) certified as EEx nA IIC T4 for Zone 2 locations.
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