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
You can program the cutoff frequency of these filters for a range of frequencies, from 10 Hz to 25 kHz. Specifically, the available frequencies are fc = 100 kHz/n, where n = 4, 5, …,10,000. Optionally, you can control the cutoff frequency with an external clock. In either case, all eight channels operate with the same cutoff frequency. However, you can individually bypass each of the eight filters in a module under software control to leave the channel unfiltered. Calibration Each of these modules contains calibration hardware to null out error sources. With automatic input zeroing, softwareprogrammable analog switches ground the inputs of each of the instrumentation amplifiers for offset error calibration. By providing an external reference voltage, you can calibrate the system to your exact operating conditions. In addition, DC compensation circuits remove the offset errors of the filters, guaranteeing excellent DC accuracy regardless of whether lowpass filtering is enabled. An onboard EEPROM stores the calibration constants for each channel and each input range in a user-defined area. The EEPROM also stores a set of factory calibration constants in permanent memory, which you cannot modify. NI-DAQ transparently uses the calibration constants to correct for gain errors. SCXI 8-Channel Lowpass Filters SCXI 8-Channel Lowpass Filter Modules Table 2. Terminal Block Options for SCXI-1141, SCXI-1142, and SCXI-1143 Terminal Block Part Number Type Special Functions Page SCXI-1304 777687-04 Screw terminals AC coupling 328 front-mounting Signal ground referencing SCXI-1305 777687-05 BNC connectors BNC connectors 328 front-mounting AC coupling Signal ground referencing SCXI-1310 777687-10 Solder pins Low-cost connector- 328 shell assembly and-shell assembly NI SCXI-1141 ................................................................776572-41 NI SCXI-1142 ................................................................776572-42 NI SCXI-1143 ................................................................776572-43 For information on extended warranty and value-added services, see page 20. BUY ONLINE! Visit ni.com/info and enter scxi1141, scxi1142 and/or scxi1143. See page 276 for more information on a complete SCXI system. Ordering Information Pre-Filter Switched Cap. Filter Post-filter Elliptic (1141) Bessel (1142) Butterworth (1143) 0 0.5 1 1.5 2 0 –100 100 200 300 Frequency (Normalized) Phase Error (degrees) 0 2 4 6 8 10 0 0.2 0.4 0.6 0.8 1 1.2 1.4 Time (Seconds) Output Voltage (V) 0 0.2 0.4 0.6 0.8 1 –3.5 –3 –2.5 –2 –1.5 –1 –0.5 0 0.5 Frequency (Normalized) Gain (dB) + Inst. – Amp Pre-Filter Switched Cap. Filter Post-filter Filter Bypass Filter Bypass CH0 Rear Signal Connector SCXIbus Connector CH1 CH7 CH7 8-to-1 Mux Analog Switch Analog Switch + Inst. – Amp Input Protection Input Protection Front Signal Connector CH7 + CH7 – CH7 + CH7 – Internal 16-Pin Analog input Connector Calibration EEPROM Digital Inteface and Timing External Clock I/O Figure 3. Step Response Figure 4. Phase Error Figure 2. Frequency Response Figure 1. Block Diagram of the SCXI-1141, SCXI-1142, and SCXI-1143 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | Maximum for 25 °C unless otherwise noted Complete Accuracy Table Input Characteristics Input coupling DC............................................. (AC with SCXI-1304 or SCXI-1305) Maximum working voltage Overvoltage protection Inputs protected ............................................... CH Transfer Characteristics Nonlinearity Offset Error....................................................... See accuracy table Gain Error ......................................................... See accuracy table Amplifier Characteristics Input Impedance Input bias current SCXI-1140......................................................... ±50 pA SCXI-1141, SCXI-1142, SCXI-1143................... ±500 pA Input offset current SCXI-1140......................................................... ±10 pA SCXI-1141, SCXI-1142, SCXI-1143................... ±250 pA CMRR (DC to 60 Hz) Output range SCXI-1140......................................................... ±10 V SCXI-1141, SCXI-1142, SCXI-1143................... ±5 V Output impedance Dynamic Characteristics Input signal bandwidth Scan interval 1Includes effects of PCI-6070E with 1 m or 2 m SCXI cable assembly. 2Includes effects of PCI-6032E SCXI cable assembly. For a definition of specific terms, please visit ni.com/glossary National Instruments • Tel: (800) 433-3488 • Fax: (512) 683-9300 • info@ni.com • ni.com 313Data Acquisition and Signal Conditioning Specifications SCXI-114x Specifications SCXI Simultaneous-Sampling Analog Input and Lowpass Filter Specifications Module Signal + Common-mode SCXI-1140 Average of two inputs should remain within ±7 V of ground SCXI-1141, SCXI-1142, SCXI-1143 Each of two inputs should remain within ±5 V of ground Module Powered On Powered Off SCXI-1140, SCXI-1141, SCXI-1142, SCXI-1143 ±30 V ±15 V Module Normal Powered On Powered Off/Overload SCXI-1140 100 G in parallel with 20 pF 10 k SCXI-1141, SCXI-1142, SCXI-1143 10 G in parallel with 40 pF 2.4 k Percent of Reading* System Noise (peak, 3 sigma)* Temperature Drift Module Nominal Range* Typical Maximum Offset Single Point Average Percent of Reading/°C Offset (µV/°C) SCXI-1140 ±10 V ±0.03 ±0.075 ±3.90 mV 600 µV 60 µV ±0.0025 ±180 ±1 V ±0.06 ±0.125 ±0.55 mV 60 µV 6 µV ±0.0025 ±25 ±100 mV ±0.1 ±0.25 ±0.24 mV 15 µV 1.5 µV ±0.0045 ±12 ±50 mV ±0.5 ±1.1 ±0.22 mV 8 µV 0.8 µV ±0.01 ±11 ±20 mV ±0.5 ±1.1 ±0.22 mV 8 µV 0.8 µV ±0.01 ±11 SCXI-1141 ±5 V ±0.02 ±0.6 ±0.60 mV 1420 µV 235 µV ±0.002 ±10 SCXI-1142 ±2.5 V ±0.02 ±0.6 ±0.60 mV 708 µV 117 µV ±0.002 ±10 SCXI-1143 ±1 V ±0.02 ±0.6 ±0.60 mV 280 µV 46.9 µV ±0.002 ±10 ±500 mV ±0.02 ±0.6 ±0.60 mV 149 µV 23.5 µV ±0.002 ±10 ±250 mV ±0.02 ±0.6 ±0.60 mV 71 µV 11.7 µV ±0.002 ±10 ±100 mV ±0.02 ±0.6 ±0.60 mV 25 µV 4.69 µV ±0.002 ±10 ±50 mV ±0.02 ±0.6 ±0.60 mV 15 µV 2.33 µV ±0.002 ±10 *Absolute Accuracy (15 to 35 °C). To calculate the absolute accuracy for the SCXI-1100/1102/1102B/1102C/1104/1104C and or 1112 refer to page 194 or visit ni.com/accuracy Module Input Range Percent of Full Scale Range SCXI-1140 ±10 V to ±1 V ±0.01 ±100 V to ±50 V ±0.02 ±20 mV ±0.04 Module Input Range Percent of Full Scale Range SCXI-1140 ±10 V 90 dB ±1 V 104 dB ±100 to ±20 mV 110 dB SCXI-1141, SCXI-1142, SCXI-1143 ±5 V 60 dB Module Multiplexed Mode Parallel Mode SCXI-1140 100 100 SCXI-1141, SCXI-1142, SCXI-1143 500 500 Module Input Range Bandwidth (-3 dB) SCXI-1140 (switch selectable) ±10 V 2 MHz ±1 V 800 kHz ±100 mV 500 kHz ±50 mV 300 kHz ±20 mV 120 kHz SCXI-1141, SCXI-1142, SCXI-1143 ±5 V to ±50 mV Dependent on filter setting Scan Interval (Per Channel, Any Gain and Filter Setting) Module ±0.012%1 ±0.006%2 ±0.0015%2 SCXI-1141, SCXI-1142, SCXI-1143 3 µs 10 µs 20 µs
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