National Instruments FIELDPOINT cFP-AI-118 Operating Instructions Manual

Artisan Technology Group is your source for quality
new and certied-used/pre-owned equipment
FAST SHIPPING AND
DELIVERY
TENS OF THOUSANDS OF IN-STOCK ITEMS
• EQUIPMENT DEMOS
HUNDREDS OF MANUFACTURERS
SUPPORTED
• LEASING/MONTHLY RENTALS
• ITAR CERTIFIED SECURE ASSET SOLUTIONS
SERVICE CENTER REPAIRS
Experienced engineers and technicians on staff at our full-service, in-house repair center
Instra
Remotely inspect equipment before purchasing with our interactive website at www.instraview.com
Contact us: (888) 88-SOURCE | sales@artisantg.com | www.artisantg.com
SM
REMOTE INSPECTION
View
WE BUY USED EQUIPMENT
Sell your excess, underutilized, and idle used equipment We also offer credit for buy-backs and trade-ins
www.artisantg.com/WeBuyEquipment
LOOKING FOR MORE INFORMATION?
Visit us on the web at www.artisantg.com for more information on price quotations, drivers, technical
specications, manuals, and documentation
FIELDPOINT™ OPERATING INSTRUCTIONS
ni.com/manuals
cFP-AI-118
8-Channel, 16-Bit Analog Input Module
These operating instructions describe how to install and use the cFP-AI-118 analog input module. For information about configuring and accessing the cFP-AI-118 over a network, refer to the user manual for the FieldPoint network module you are using.
Features
The cFP-AI-118 is a FieldPoint analog input module with the following features:
Eight differential analog voltage input channels
Eight voltage input ranges: 0–1 V, 0–5 V, 0–10 V, 0–15 V, 1V, 5V, 10 V, and 15 V
16-bit resolution
Simultaneous sampling on all channels
10 Hz digital sinc filter configurable per channel
•750 V withstand test
•250V verified by 2,300 V
–40 °C to 70 °C operation
Hot-swappable
channel-to-channel isolation, verified by 5 s dielectric
rms
CAT II continuous channel-to-ground isolation,
rms
, 5 s dielectric withstand test
rms
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Installing the cFP-AI-118
The cFP-AI-118 mounts on a Compact FieldPoint backplane (cFP-BP-x), which provides operating power to the module. Installing the cFP-AI-118 onto a powered backplane does not disrupt the operation of the FieldPoint bank.
To install the cFP-AI-118, refer to Figure 1 and complete the
2
2
1
3 5
4
4
following steps:
1. Align the captive screws on the cFP-AI-118 with the holes on the backplane. The alignment keys on the cFP-AI-118 prevent backward insertion.
2. Press firmly to seat the cFP-AI-118 on the backplane.
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.
1cFP-AI-118 2 Captive Screws 3 cFP Controller Module
Figure 1. Installing the cFP-AI-118
cFP-AI-118 2 ni.com
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
4 Screw Holes 5 cFP Backplane
Wiring the cFP-AI-118
The cFP-CB-1 has connections for each of the eight input channels. Each channel has two input terminals, V and V–.
Table 1 lists the terminal assignments for each channel.
Table 1. Terminal Assignments
Terminal Numbers
Channel
0 1 18
1 3 20
2 5 22
3 7 24
4 9 26
5 11 28
6 13 30
7 15 32
NI does not recommend using the V and C terminals with the cFP-AI-118.
Caution 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.
V+ V–
© National Instruments Corp. 3 cFP-AI-118
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Measuring Voltage with the cFP-AI-118
V+
V–
cFP-AI-118
Voltage
Source
+
Amplifier
1 MΩ Input Impedance
1
2
Figure 2 shows how to connect a voltage source to one channel of the cFP-AI-118.
Figure 2. Voltage Source without External Power Supply
Installing the Ferrite on Signal Wires
In order to suppress radiated emissions from the Compact FieldPoint system, you must install the ferrite shipped with the cFP-AI-118. Install the ferrite 2–3 in. from the ends of the I/O signal wires, as shown in Figure 3.
1Ferrite 2cFP-CB-x Connector Block
Figure 3. Installing the Ferrite on Signal Wires
cFP-AI-118 4 ni.com
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Install a tie wrap or other device to secure the ferrite in place, as shown in Figure 4.
1
2
1Ferrite 2Tie Wrap 3cFP-CB-x Connector Block
Figure 4. Ferrite Installed on Signal Wires and Secured with Tie Wrap
Figures 3 and 4 show signal wires connected to a
Note
3
cFP-CB-x connector block, but the ferrite is required with any connection method.
Input Ranges
The input ranges for voltage signals are 0 –1 V, 0–5 V, 0–10 V, 0–15 V, 1V, 5V, 10 V, and 15 V. FieldPoint software shows these input ranges with overranging. To prevent inaccurate readings, choose an input range such that the signal you are measuring does not exceed either end of the range.
Measurements on a channel may be invalid for up to two update periods after you change the input range.
Overranging
The cFP-AI-118 has an overranging feature that measures 5% beyond the nominal values of each range. For example, the actual measurement limit of the 15 V range is 15.75 V. The
© National Instruments Corp. 5 cFP-AI-118
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Loading...
+ 12 hidden pages