NI CFP-AI-118

Analog Input Module for Compact FieldPoint
NI cFP-AI-118
• 8 analog voltage differential
input channels
• 8 voltage input ranges – ±1, ±5, ±10,
±15, 0 to 1, 0 to 5, 0 to 10, and 0 to 15 V
• 16-bit resolution
• Simultaneous sampling on all channels
• 10 Hz digital sync filter configurable
per channel
• 100 Vrms Category I continuous
channel-to-channel isolation, verified by
750 Vrms, 5 s dielectric withstand test
• 250 Vrms Category II continuous channelto-ground isolation, verified by a
2,300 Vrms, 5 s dielectric withstand test
• Hot-swappable
• -40 to 70 °C operation
Overview
The National Instruments cFP-AI-118 Compact FieldPoint module can
measure eight analog inputs at 16-bit resolution at a 10 kS/s per-channel
sampling rate with multiple voltage ranges. In addition to high resolution
and simultaneous sampling, the NI cFP-AI-118 features 750 Vrms channelto-channel isolation and 2,300 Vrms channel-to-backplane isolation,
verified by a 5 s dielectric withstand test. This module also was designed
using a new architecture in which the controller obtains access to the
module memory immediately, significantly reducing jitter. This feature
makes this module ideal for industrial environments where sensors and
actuators work at different voltage levels, and ground loops are common.
Ordering Information
NI cFP-AI-118 ......................................................................777318-118
Recommended Compact FieldPoint System Products
NI cFP-2120 ..................................................................777317-2120
NI cFP-BP-4........................................................................778617-04
NI cFP-CB-1........................................................................778618-01
NI PS-5 power supply........................................................778805-90
NI Developer Suite Professional Control Edition..............777906-03
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For complete product specifications, pricing, and accessory
information, call 800 813 3693 (U.S.) or go to ni.com/compactfieldpoint.
Analog Input Module for Compact FieldPoint
Accuracy by Input Range and Temperature Range
Specifications
Typical for -40 to 70 °C temperature range and for operation with
the 10 Hz filter enabled unless otherwise noted.
Input Characteristics
Number of channels............................ 8 differential
Maximum signal input range.............. ±15 V (±15.75 V with overranging)
Maximum voltage
(V+ or V- to earth) ............................... 250 Vrms, Measurement
Category II
ADC resolution.................................... 16 bits (refer to table)
Type of ADC ........................................ Delta-sigma
Effective Resolution by Input Range and Filter Setting
Nominal Input
Range (V)
±1
±5
±10
±15
0 to 1
0 to 5
0 to 10
0 to 15
1Includes
With Overranging (V)
±1.05
±5.25
±10.5
±15.75
0 to 1.05
0 to 5.25
0 to 10.5
0 to 15.75
Effective Resolution1
(No Filtering) (µV)
100
160
320
480
100
100
160
240
Effective Resolution1 with
10 Hz Filter (µV)
32
160
320
480
16
80
160
240
quantization errors and typical RMS noise.
All-channel sample rate
With 10 Hz filter ............................. 3.45 kHz1
Without filtering ............................. 10.42 kHz1
Input bandwidth (-3 dB) ...................... 3 kHz minimum
Common-mode rejection at 60 Hz, with 50 Ω source impedance and no
filtering
Channel to channel.........................
Channel to ground ..........................
Crosstalk attenuation..........................
RMS noise...........................................
Peak-to-peak noise .............................
Settling time to 1 LSB
Full-scale step (-15 to 15 V) ...........
1% step...........................................
Semaphore acquisition jitter ..............
Monotonicity .......................................
110 db
110 db
>100 dB
100 µV
700 µV
2.1 ms
1.6 ms
None
Warranted over the operating
temperature range
Input resistance .................................. 1 MΩ
Input capacitance................................ <50 pF
Overvoltage protection ....................... ±250 V
1The
all-channel update rate refers to the time the module takes to sample all channels.
The overall system update rate is affected by other factors, such as the aggregate
module update rate and software loop rate. To calculate the system update rate, visit
ni.com/info and enter “systemrate.”
Nominal Input
Range (V)
±1
±5
±10
±15
0 to 1
0 to 5
0 to 10
0 to 15
Typical Accuracy at 15 to 35 °C
(% of Reading; % of Full Scale)
±0.037; ±0.006
±0.037; ±0.003
±0.037; ±0.003
±0.037; ±0.003
±0.037; ±0.006
±0.037; ±0.003
±0.037; ±0.003
±0.037; ±0.003
Warranted Accuracy at 15 to 35 °C
(% of Reading; % of Full Scale)
±0.086; ±0.036
±0.066; ±0.009
±0.064; ±0.005
±0.063; ±0.004
±0.111; ±0.036
±0.071; ±0.009
±0.066; ±0.005
±0.065; ±0.004
Gain error drift .................................... 7.4 ppm/°C
Offset error drift.................................. 3 µV/°C
Isolation Voltage
Isolation voltage is verified by a dielectric withstand test.
Channel-to-channel isolation
Continuous...................................... 100 Vrms
Withstand ....................................... 750 Vrms, 5 s max
Channel-to-backplane isolation
Continuous...................................... 250 Vrms
Withstand ....................................... 2,300 Vrms, 5 s max
Channel-to-ground isolation
Continuous...................................... 250 Vrms
Withstand ....................................... 2,300 Vrms, 5 s max
Physical Characteristics
LED indicators
Power (green)
Ready (green)
Dimensions.......................................... 127.1 by 73.3 by 23.9 mm
(5.00 by 2.89 by 0.94 in.)
Weight................................................. 117 g (4.1 oz)
Warm-up time ..................................... 30 minutes
Power Requirements
Power from network module .............. 1.125 W
Environment
Operating temperature .......................
Storage temperature...........................
Relative humidity ................................
Maximum altitude...............................
-40 to 70 °C
-40 to 85 °C
10 to 90%, noncondensing
2,000 m; at higher altitudes the
isolation voltage ratings must
be lowered
Pollution degree.................................. 2
Shock and Vibration
Operating vibration, random
(IEC 60068-2-64) ............................. 10 to 500 Hz, 5 grms
Operating vibration, sinusoidal
(IEC 60068-2-6) ............................... 10 to 500 Hz, 5 g
Operating shock
(IEC 60068-2-27) ............................. 50 g, 3 ms half sine, 18 shocks
at 6 orientations; 30 g, 11 ms
half sine, 18 shocks at
6 orientations
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2
Analog Input Module for Compact FieldPoint
Safety and Compliance
CE Compliance
Safety
This product meets the essential requirements of applicable European
Directives, as amended for CE marking, as follows:
This product is designed to meet the requirements of the following
standards of safety for electrical equipment for measurement, control,
and laboratory use:
• IEC 61010-1, EN 61010-1
• UL 61010-1, CSA 61010-1
Note: For UL and other safety certifications, refer to the product label or
visit ni.com/certification, search by model number or product line, and
click the appropriate link in the Certification column.
Electromagnetic Compatibility
This product is designed to meet the requirements of the following
standards of EMC for electrical equipment for measurement, control,
and laboratory use:
• 2006/95/EC; Low-Voltage Directive (safety)
• 2004/108/EC; Electromagnetic Compatibility Directive (EMC)
Note: Refer to the Declaration of Conformity (DoC) for this product for
any additional regulatory compliance information. To obtain the DoC for
this product, visit ni.com/certification, search by model number or
product line, and click the appropriate link in the Certification column.
Waste Electrical and Electronic Equipment (WEEE)
EU Customers: At the end of their life cycle, all products must be
sent to a WEEE recycling center. For more information about WEEE
recycling centers and National Instruments WEEE initiatives,
visit ni.com/environment/weee.htm.
• EN 61326 EMC requirements; Minimum Immunity
• EN 55011 Emissions; Group 1, Class A
• CE, C-Tick, ICES, and FCC Part 15 Emissions; Class A
Note: For EMC compliance, operate this device according to
product documentation.
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Calibration Services
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high-accuracy measurements. We provide manual calibration
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*351560A-01*
351560A-01
2007-9281-161-101-D
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