5B32-01-NI

5B32-01-NI FEATURES

5B32-01-NI PRODUCT OVERVIEW

The 5B Series represents an innovative generation of low cost,high performance plug-in signal conditioners. Designed forindustrial applications, these modules incorporate highlyreliable transformer-based isolation and automated surface-mount manufacturing technology. They are compact,economical components whose performance exceeds thatavailable from more expensive devices. Combining 1500 V rmscontinuous isolation, +0.05% calibrated accuracy, small size andlow cost, the 5B Series is an attractive alternative to expensivesignal conditioners and in-house designsAll modules are potted and identical in pin-out and size (2.27” x2.32” x 0.595”). They can be mixed and matched, permittingusers to address their exact needs, and may be “hot swappedwithout disturbing field wiring or power. The isolated inputmodules provide 0 to +5V or +5V outputs and accept J, K, T, E,R, S, N, or B type thermocouples.These modules feature complete signal conditioning functionsincluding 240 V rms input protection, filtering, chopperstabilized low drift +1 uV/oC amplification, 1500 V rmsisolation, and sensor excitation when required.All modules feature excellent common mode rejection andmeet industrial transient surge withstand specifications.

5B32-01-NI APPLICATIONS

Industrial signal conditioningIndustrial signal isolationIndustrial signal filtering

5B32-01-NI GENERAL DESCRIPTION

The 5B32 is a single-channel signal conditioning module thatamplifies, protects, filters and isolates its analog input. Themodule measures a process current input signal of 4-20 mA or0-20 mA by reading the voltage across an external precision20W resistor (supplied) and generating an output of 0 to +5 V.Extra current conversion resistor are available as accessories(See Model AC1362 in the Accessories section).Note that the 5B32 module circuitry can withstand 240 V rms atthe input screw-terminals, thereby shielding computer-sidecircuitry from field-side overvoltage conditions. In addition, all5B32 Series modules are mix-and-match and hot swappable, socan be inserted or removed from any socket in the samebackplane without powering down the system.A chopper-stabilized input amplifier provides low drift andstable gain. At the amplifier input, a stable, laser-trimmed zero-scale input offset is subtracted from the input signal to set thezero-scale value for the 4-20 mA range. For user convenience,the zero can be optionally factory-set to meet custom needs,This allows suppression of a zero-scale input value many timeslarger than the total span for precise expanded-scalemeasurements.Internal multi-pole lowpass filtering with a four-Hz cutoff (-3dB) enhances normal-mode (noise on signal) and common-mode (noise on signal return) rejection at 50/60 Hz, enablingaccurate measurement of small signals in high electrical noise.A series output switch eliminates the need for externalmultiplexing in many applications. The switch is turned on byan active-low enable input. If the switch is to be on at all times,the enable-input should be grounded to power common as it ison the 5B01 and 5B08 backplanes....

5B32-01-NI Description

5B32-01-NI GENERAL DESCRIPTION

The 5B32 is a single-channel signal conditioning module thatamplifies, protects, filters and isolates its analog input. Themodule measures a process current input signal of 4-20 mA or0-20 mA by reading the voltage across an external precision20W resistor (supplied) and generating an output of 0 to +5 V.Extra current conversion resistor are available as accessories(See Model AC1362 in the Accessories section).Note that the 5B32 module circuitry can withstand 240 V rms atthe input screw-terminals, thereby shielding computer-sidecircuitry from field-side overvoltage conditions. In addition, all5B32 Series modules are mix-and-match and hot swappable, socan be inserted or removed from any socket in the samebackplane without powering down the system.A chopper-stabilized input amplifier provides low drift andstable gain. At the amplifier input, a stable, laser-trimmed zero-scale input offset is subtracted from the input signal to set thezero-scale value for the 4-20 mA range. For user convenience,the zero can be optionally factory-set to meet custom needs,This allows suppression of a zero-scale input value many timeslarger than the total span for precise expanded-scalemeasurements.Internal multi-pole lowpass filtering with a four-Hz cutoff (-3dB) enhances normal-mode (noise on signal) and common-mode (noise on signal return) rejection at 50/60 Hz, enablingaccurate measurement of small signals in high electrical noise.A series output switch eliminates the need for externalmultiplexing in many applications. The switch is turned on byan active-low enable input. If the switch is to be on at all times,the enable-input should be grounded to power common as it ison the 5B01 and 5B08 backplanes....Figure 2