Product Details
Product Description
Product Description
Focus on DCS, PLC, robot control system and large servo system.
Main products: various modules / cards, controllers, touch screens, servo drivers.
Advantages: supply of imported original products, professional production parts,
Fast delivery, accurate delivery time,
The main brands include ABB Bailey, Ge / fuanc, Foxboro, Invensys Triconex, Bently, A-B Rockwell, Emerson, ovation, Motorola, xyvom, Honeywell, Rexroth, KUKA, Ni, Deif, Yokogawa, Woodward, Ryan, Schneider, Yaskawa, Moog, prosoft and other brands
GDD471A001 2UBA002322R0001 |
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. For applications which require CE certification, the baseplate and power supplies must be installed in a metal rack. Open wall mounting in that case is not allowed. TERMINATION ASSEMBLIES Field I/O signals connect to the FBM subsystem via DIN rail mounted TAs. The TAs used with the FBM212 are described in “TERMINATION ASSEMBLIES AND CABLES” on page 6. PSS 21H-2Z12 B4 Page 3 FUNCTIONAL SPECIFICATIONS Input 14 group isolated differential thermocouple/mV input channels and one reference junction temperature compensation channel. Input Range -10.5 to +69.5 mV dc (-10.5 to +69.5 mV dc equals 0 to 64000 raw counts. Inputs of 71.419 mV dc equals 65535 raw counts (full range of module)). Reference Junction 3-wire 100 ohm platinum RTD (IEC 751, Class B) is internally provided at the termination assembly. Channel 15 is the cold junction compensation channel. The RTD is in the TA and is not customer accessible. Accuracy MILLIVOLT INPUT ±0.03% of span (±27 µV) at 25°C RTD CHANNEL ±0.03% of span RTD REFERENCE JUNCTION CONFORMITY ±0.25°C THERMOCOUPLE CONFORMITY ±0.25°C ACCURACY TEMPERATURE COEFFICIENT ±50 ppm/°C RTD REFERENCE JUNCTION MEASUREMENT ACCURACY(B) ±0.50°C (When using the RTD internal to the Foxboro supplied termination blocks) DIFFERENTIAL INPUT IMPEDANCE 10 MΩ COMMON MODE VOLTAGE ±2.5 V dc or peak ac between channels Input Signal A/D Conversion Each channel performs A/D signal conversion using a multiplexed Sigma-Delta converter. Input Conversion Time Software configurable Input Open Circuit Voltage 2.5 V dc (mV channels) Typical Thermocouple Types B, E, J, K, N, R, S, T, and other millivolt signals. The thermocouples cannot be grounded. For grounded thermocouple applications, the FBM202 and its associated termination assembly must be used. Input Channel Isolation Each channel has a differential input to allow voltage differences between channels without introducing errors. The channels are not galvanically isolated from each other, but are galvanically isolated from ground and module logic. The module withstands, without damage, a potential of 600 V ac applied for one minute between the differentially isolated channels and earth (ground). CAUTION This does not imply that these channels are intended for permanent connection to voltages of these levels. Exceeding the limits for input voltages, as stated elsewhere in this specification, violates electrical safety codes and may expose users to electric shock. Communication Communicates withGDB021BE GDB021BE01 HIEE300766R0001 |
The FBM212 Thermocouple/mV Differential Input Interface Module contains 14 differentially isolated thermocouple input channels, and one differentially isolated RTD reference junction temperature compensation channel. FEATURES Key features of the FBM212 are: Fourteen channels for input of thermocouple signals One isolated RTD reference junction compensation channel (for terminal temperature sensing) Each channel has a differential input Compact, rugged design suitable for enclosure in Class G3 (harsh) environments Execution of an analog input application program that provides conversion time and configurable options for Rate of Change Limits High accuracy achieved by sigma-delta data conversions for each channel Termination Assemblies (TAs) for locally or remotely connecting field wiring to the FBM212. PSS 21H-2Z12 B4 Page 2 OVERVIEW The Differential Thermocouple/mV Input Interface Module (FBM212) contains 14 differentially isolated thermocouple input channels, and one differentially isolated RTD reference junction temperature compensation channel (for terminal temperature sensing). Each thermocouple/mV channel accepts standard thermocouples for various temperature ranges, and each provides thermocouple burnout detection (up-scale). Each channel has a differential input to allow voltage differences between channels without introducing errors. The module performs the signal conversion required to interface the electrical input signals from the field sensors to the optionally redundant Fieldbus. It executes an analog input application program, which provides configurable options for Conversion Time and Rate of Change Limits. HIGH ACCURACY For high accuracy, the module incorporates a multiplexed Sigma-Delta converter, which can provide new analog input readings every 500 ms, and a configurable integration period to remove any process noise and power line frequencies. Each update time period, the FBM converts each analog input to a digital value, averages these values over the time period and provides the averaged value to the controller. Compact Design FBM212 has a compact design, with 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 LEDs incorporated into the front of the module provide visual status indications. 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 redundant 2 Mbps module Fieldbus used by the FBMs. The FBM212 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 pat