5B31

Isolated Voltage Input. Amplifies, Protects, Filters, & Isolates Analog Input Voltages. Protect the computer side from damage due to field-side overvoltage faults.

A Series output switch eliminates the need for externalmultiplexing in many applications.Module circuitry can withstand 240v rms at the input screwterminals.

All 5B30 & 5B31 series modules are mix-and-match and HotSwappable.

The 5B30 and 5B31 are single-channel signal conditioningmodules that amplify, protect, filter and isolate analog inputvoltages.

The 5B30 and 5B31 protect the computer side from damage due to field-side over voltage faults. All models withstand 240V rms at their input terminals without damage thereby shielding computer side circuitry from field-side over voltage conditions.In addition, 5B30 and 5B31 Series modules are mix-and-match and hot swappable, so can be inserted or removed from anysocket in the same backplane without disrupting system power.

A chopper-stabilized input amplifier provides low drift and stable gain. At the amplifier input, a stable, laser-trimmed zeroscale input voltage of 5B30 and 5B31 is subtracted from the input signal to set the zero scale value. For user convenience, the zero of 5B30 and 5B31 can be optionally factory-set to meet custom needs. This allows suppression of a zero-scale input value many times larger that the total span for precise expanded-scale measurements.

Internal multi-pole low-pass filtering of 5B30 and 5B31 with a four-Hz cutoff (-3dB) enhances normal-mode (noise on signal) and commonmode(nosie on signal return) rejection at 50/60 Hz, enabling accurate measurement of small signals in high electrical noise.

Signal isolation by transformer coupling uses a proprietary modulation technique for linear, stable and reliable performance. The differential input circuit of 5B30 and 5B31 on the field side is fully floating, eliminating the need for any input grounding. A demodulator on the computer side of the signal transformer recovers the original signal, which is then filtered and buffered to provide a low-noise, low-impedance output signal. The output common of 5B30 and 5B31 must be kept within +3 V of power common.

A series output switch of 5B30 and 5B31 eliminates the need for external multiplexing in many applications. The switch is turned on by an active-low enable input. If the switch of 5B30 and 5B31 is to be on at all times, the enable-input should be grounded to power common as it ison the 5B01 and 5B08 backplanes.