User's Manual

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FieldPoint

™

Operating Instructions

FP-AI-112 and cFP-AI-112

16-Channel, 16-Bit Analog Input Modules

These operating instructions describe how to install and use the

FP-AI-112 and cFP-AI-112 analog input modules (referred

to inclusively as the [c]FP-AI-112). For information about

configuring and accessing the [c]FP-AI-112 over a network, refer

to the user manual for the FieldPoint network module you are

using.

Features

The [c]FP-AI-112 is a FieldPoint analog input module with the

following features:

• 16 analog voltage input channels

• Eight voltage input ranges: 0–1 V, 0–5 V, 0–10 V, ±60 mV,

±300 mV, ±1V, ±5V, and ±10 V

• 16-bit resolution

• 50 and 60 Hz filter settings

• 250 V

rms

CAT II continuous channel-to-ground isolation,

verified by 2,300 V

rms

,1 minute dielectric withstand test

• –40 to 70 °C operation

• Hot swappable

Installing the FP-AI-112

The FP-AI-112 mounts on a FieldPoint terminal base (FP-TB-x),

which provides operating power to the module. Installing the

FP-AI-112 onto a powered terminal base does not disrupt the

operation of the FieldPoint bank.

Summary of content (16 pages)

PAGE 1
FieldPoint™ Operating Instructions FP-AI-112 and cFP-AI-112 16-Channel, 16-Bit Analog Input Modules These operating instructions describe how to install and use the FP-AI-112 and cFP-AI-112 analog input modules (referred to inclusively as the [c]FP-AI-112). For information about configuring and accessing the [c]FP-AI-112 over a network, refer to the user manual for the FieldPoint network module you are using.
PAGE 2
To install the FP-AI-112, refer to Figure 1 and complete the following steps: 1. Slide the terminal base key to either position X (used for any module) or position 1 (used for the FP-AI-112). 2. Align the FP-AI-112 alignment slots with the guide rails on the terminal base. 3. Press firmly to seat the FP-AI-112 on the terminal base. When the FP-AI-112 is firmly seated, the latch on the terminal base locks it into place.
PAGE 3
. Using a number 2 Phillips screwdriver with a shank of at least 64 mm (2.5 in.) length, tighten the captive screws to 1.1 N ⋅ m (10 lb ⋅ in.) of torque. The nylon coating on the screws prevents them from loosening. 4 3 5 2 4 2 1 1 cFP-AI-112 2 Captive Screws 3 cFP Controller Module 4 Screw Holes 5 cFP Backplane Figure 2.
PAGE 4
You can use an external power supply to power field devices. Connect the positive lead of the external power supply to both V terminals and the negative lead to both C terminals. Ensure that the current through both V terminals can never exceed 2 A. Install 2 A maximum, fast-acting fuses between the external power supply and the V terminals. The wiring diagrams in this document show fuses where appropriate. Table 1 lists the terminal assignments for the signals associated with each channel.
PAGE 5
Cascading power between two modules defeats isolation between those modules. Cascading power from the network module defeats all isolation between modules in the FieldPoint bank. Caution Measuring Voltage with the [c]FP-AI-112 Figure 3 shows how to connect a voltage source without an external power supply to one channel of the [c]FP-AI-112. C V VSUP VIN Voltage Source Input Circuitry + – >100 MΩ Input Impedance COM [c]FP-AI-112 Figure 3.
PAGE 6
Input Ranges The input ranges for voltage signals are 0–1 V, 0–5 V, 0–10 V, ±60 mV, ±300 mV, ±1 V, ±5 V, and ±10 V. To prevent inaccurate readings, choose an input range such that the signal you are measuring does not exceed either end of the range. Signals that greatly exceed the configured range can adversely affect measurements on other channels. Measurements on a channel may be invalid for up to one update period after you change the input range.
PAGE 7
(number of input ranges with 60 Hz filter) × 0.10 s + (number of channels with 500 Hz filter) × 0.007 s + (number of input ranges with 500 Hz filter) × 0.012 s + 0.16 s = Update Period For the fastest performance, configure all unused channels for the 500 Hz filter setting and for an input range in use on one or more other channels with the 500 Hz filter setting.
PAGE 8
Isolation and Safety Guidelines Read the following information before attempting to connect the [c]FP-AI-112 to any circuits that may contain hazardous voltages. Caution This section describes the isolation of the [c]FP-AI-112 and its compliance with international safety standards. The field wiring connections are isolated from the backplane and the inter-module communication bus.
PAGE 9
using 14 AWG (1.6 mm) wire with a ring lug. Use the 5/16 in. panhead screw shipped with the backplane to secure the ring lug to the backplane PE ground terminal. • As with any hazardous voltage wiring, make sure that all wiring and connections meet applicable electrical codes and commonsense practices. Mount terminal bases and backplanes in an area, position, or cabinet that prevents accidental or unauthorized access to wiring that carries hazardous voltages.
PAGE 10
Effective resolution by input range and filter setting Nominal Input Range With Overranging Effective Resolution* at 50 or 60 Hz Effective Resolution* at 500 Hz ±60 mV ±65 mV 3 µV 25 µV ±300 mV ±325 mV 16 µV 100 µV ±1 V ±1.04 V 40 µV 300 µV ±5 V ±5.2 V 190 µV 1500 µV ±10 V ±10.4 V 380 µV 3000 µV 0–1 V 0–1.04 V 20 µV 300 µV 0–5 V 0–5.2 V 95 µV 1500 µV 0–10 V 0–10.4 V 190 µV 3000 µV * Includes quantization errors and typical rms noise.
PAGE 11
Typical and warranted accuracy by input range and temperature range Nominal Input Range Typical Accuracy at 15 to 35 °C (% of Reading; % of Full Scale) Warranted Accuracy at 15 to 35 °C (% of Reading; % of Full Scale) ±60 mV ±0.03%; ±0.05% ±0.05%; ±0.3% ±300 mV ±0.03%; ±0.015% ±0.05%; ±0.1% ±1 V ±0.03%; ±0.008% ±0.05%; ±0.04% ±5 V ±0.03%; ±0.005% ±0.05%; ±0.02% ±10 V ±0.03%; ±0.005% ±0.05%; ±0.02% 0–1 V ±0.03%; ±0.005% ±0.05%; ±0.03% 0–5 V ±0.03%; ±0.003% ±0.05%; ±0.01% 0–10 V ±0.
PAGE 12
Physical Characteristics Indicators .......................................... Green POWER and READY indicators Weight FP-AI-112................................... 142 g (5.0 oz) cFP-AI-112................................. 113 g (4.0 oz) Power Requirements Power from network module ............ 350 mW Isolation Voltage Channel-to-ground isolation Continuous ................................. 250 Vrms, Installation Category II Dielectric withstand....................
PAGE 13
Shock and Vibration These specifications apply only to the cFP-AI-112. NI recommends Compact FieldPoint if your application is subject to shock and vibration. Operating vibration, random (IEC 60068-2-64).............................. 10–500 Hz, 5 grms Operating vibration, sinusoidal (IEC 60068-2-6)................................ 10–500 Hz, 5 g Operating shock (IEC 60068-2-27)..............................
PAGE 14
CE Compliance This product meets the essential requirements of applicable European Directives, as amended for CE marking, as follows: Low-Voltage Directive (safety)......... 73/23/EEC Electromagnetic Compatibility Directive (EMC) ............................... 89/336/EEC 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.
PAGE 15
Where to Go for Support For more information about setting up the FieldPoint system, refer to these National Instruments documents: • FieldPoint network module user manual • Other FieldPoint I/O module operating instructions • FieldPoint terminal base and connector block operating instructions Go to ni.com/support for the most current manuals, examples, and troubleshooting information. National Instruments corporate headquarters is located at 11500 North Mopac Expressway, Austin, Texas, 78759-3504.
PAGE 16
FieldPoint™, National Instruments™, NI™, and ni.com™ are trademarks of National Instruments Corporation. Product and company names mentioned herein are trademarks or trade names of their respective companies. For patents covering National Instruments products, refer to the appropriate location: Help»Patents in your software, the patents.txt file on your CD, or ni.com/patents. © 2004 National Instruments Corp. All rights reserved.