National Instruments FIeldPoint FP-AO-200 Operating Manual
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National Instruments FIeldPoint FP-AO-200 Operating Manual

National Instruments FIeldPoint FP-AO-200 Operating Manual

8 channel, 20 ma loop output module
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FP-AO-200
8 Channel, 20 mA Loop Output Module
Highlights
•
Eight 0-20/4-20 mA outputs
•
0.5 mA over-range ability
•
12-bit resolution DACs
•
Open current loop indicators
•
3,000 V input-to-output isolation
•
Double insulated for 250 V safe working voltage
•
Up to 1 kOhm load impedance (with 24 V loop supply)
•
Short circuit protection
•
-40° to +70° C operation
Overview
The FP-AO-200 is a FieldPoint analog output module with eight
0-20/4-20 mA current loop outputs. You can use the FP-AO-200 to
drive devices using process current loops of either the 0-20 mA or
4-20 mA standards. Hot plug and play operation, safety isolation,
onboard diagnostics such as open loop detection, and over-ranging
ability ensure that installation and maintenance are as trouble free
as possible.
These operating instructions describe the installation, features, and
characteristics of the FP-AO-200. For details on configuring and
accessing the FP-AO-200 over a network, refer to the user manual
for the particular FieldPoint network module you are using with the
FP-AO-200.
FieldPoint ™ is a trademark of National Instruments Corporation. Product and company names are
trademarks or trade names of their respective companies.
321634A-01
© Copyright 1997 National Instruments Corp. All rights reserved.
July 1997

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Summary of Contents for National Instruments FIeldPoint FP-AO-200

  • Page 1 FP-AO-200 over a network, refer to the user manual for the particular FieldPoint network module you are using with the FP-AO-200. FieldPoint ™ is a trademark of National Instruments Corporation. Product and company names are trademarks or trade names of their respective companies. 321634A-01 ©...

  • Page 2: Module Installation

    Module Installation The FP-AO-200 mounts on a FieldPoint terminal base (FP-TB-xx) unit. The hot plug and play operation of the FP-AO-200 allows you to install it onto a powered terminal base without disturbing the operation of other modules or terminal bases. The FP-AO-200 receives operating power from the terminal base.
  • Page 3 and a supply terminal, V (internally connected to the V terminal). As the figures show, connections to the C and COM terminals are not required but may be used to simplify wiring. You may use connections to the V terminals to route power from the V terminal to devices which require supplementary power.

  • Page 4: Current Output Circuit

    Current Output Circuit The output circuit of the FP-AO-200 is a sourcing current output, which means that it is designed to source current provided by an external loop supply to a device or load capable of sinking this current to the common voltage of the loop supply. The FP-AO-200 can operate with an external loop supply from 5 to 24 VDC;...

  • Page 5: Output Ranges

    Output Ranges You may configure the output range of each channel independently for either 0-20 mA or 4-20 mA operation. The factory default power-up setting for each channel is 0-20 mA, with output set to 0 mA. The FP-AO-200 has a built in over-range capability of 0.5 mA in each of these ranges, thus the actual full scale ranges available are 0-20.5 mA and 3.5-20.5 mA.

  • Page 6: Status Indicators

    Status Indicators Figure 4 shows the module label and status indicators. You can remove the insertable label to see wiring diagrams for the output channels. Figure 4. Status Indicators After the module has been inserted into a terminal base (and power is applied), the module runs an internal boot up sequence and self test.
  • Page 7 FP-AO-200 provides double insulation (compliant to IEC 1010-1) for working common mode voltages of 250 Vrms. Safety standards (such as those published by UL and IEC) require the use of double insulation between hazardous voltages and any human-accessible parts or circuits. You should never attempt to use any isolation product between human accessible parts (such as DIN rails or monitoring stations) and circuits which may be at hazardous potentials under normal conditions, unless the product is...

  • Page 8: Specifications

    Specifications These specifications are typical for -40° to +70° C unless otherwise noted. Output Characteristics Number of channels ......8 single-ended Resolution ........12 bits, 1 in 4,096 (~6 µA/bit) Isolation ..........3,000 Vrms, input to output Safety isolation, working voltage ..250 Vrms channel to earth ground, designed per IEC 1010 Current Output...
  • Page 9 Physical Indicators .......... Green POWER and READY indicators, 8 red open loop indicators Weight..........140 g (4.8 oz.) Power Requirements Power from network module .... 350 mW Environment Operating Temperature..... -40 °C to +70 °C Storage Temperature......-55 °C to + 100 °C Relative Humidity......

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