National Instruments FieldPoint FP-DI-330 Operating Instructions Manual
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National Instruments FieldPoint FP-DI-330 Operating Instructions Manual

National Instruments FieldPoint FP-DI-330 Operating Instructions Manual

8-channel, universal discrete input module
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OPERATING INSTRUCTIONS
FP-DI-330
8-Channel, Universal Discrete
Input Module
These operating instructions describe the installation, features, and
characteristics of the FP-DI-330. For details on configuring and
accessing the FP-DI-330 over a network, refer to the user manual
for the particular FieldPoint network module you are using with
the FP-DI-330.
Features
The FP-DI-330 is a FieldPoint discrete input module with the
following features:
•
Eight discrete input channels
•
Universal inputs work with any voltage from 5 V TTL level up
to 250 VDC/VAC
•
Compatible with sourcing, sinking, or power sensing
applications
•
On/Off LED indicators
•
Hot plug and play operation
•
3,000 V input to output isolation
•
Double insulated for 250 V safe working voltage
•
–40 to +70 °C operation
Installation
The FP-DI-330 mounts on a FieldPoint terminal base (FP-TB-xx)
unit. The hot plug and play operation of the FP-DI-330 allows you
to install it onto a powered terminal base without disturbing
FieldPoint ™ is a trademark of National Instruments Corporation. Product and company names
mentioned herein are trademarks or trade names of their respective companies.
321633B-01
© Copyright 1997, 1999 National Instruments Corp. All rights reserved. June 1999

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Summary of Contents for National Instruments FieldPoint FP-DI-330

  • Page 1 The hot plug and play operation of the FP-DI-330 allows you to install it onto a powered terminal base without disturbing FieldPoint ™ is a trademark of National Instruments Corporation. Product and company names mentioned herein are trademarks or trade names of their respective companies.

  • Page 2: Field Wiring

    the operation of other modules or terminal bases. The FP-DI-330 receives operating power from the terminal base. To install the FP-DI-330, refer to Figure 1 and follow these steps: 1. Slide the terminal base key to either position X (used for any module) or position 3 (used for the FP-DI-330 module.) 2.
  • Page 3 Transducers (5-250 Volts) Sinking (NPN, Open Collector) 3-Wire Devices Powered From FP-DI-330 Sourcing (PNP, Terminals Open Emitter) Sinking Devices Powered Externally Sourcing Sensing Power Load Applied to a Load Figure 2. Basic Field Connections (Five Channels Shown) © National Instruments Corp. FP-DI-330...
  • Page 4 Table 1 lists the terminal assignments for the signals associated with each channel. Table 1. Terminal Assignments Terminal Numbers Channel INa, INb 1, 2 3, 4 5, 6 7, 8 9, 10 11, 12 13, 14 15, 16 Universal Input Circuit The universal inputs of the FP-DI-330 consist of bi-directional optical isolators with current-limiting circuitry.

  • Page 5: Sensing Dc Voltages

    The delay for a transition from an OFF to an ON state is approximately 0.2 µs. Thus, a signal must be in the OFF state for at least 1 ms before the FP-DI-330 recognizes it as being OFF. © National Instruments Corp. FP-DI-330...

  • Page 6: Sensing Ac Voltages

    Sensing AC Voltages The FP-DI-330 senses a wide range of AC signals by registering a constant ON state while an AC voltage is present at an input. The threshold level for AC signals depends on the frequency of the signal. For sinusoidal signals with a frequency of 50 or 60 Hz, a signal of at least 15 Vrms results in a constant ON state.

  • Page 7: Isolation And Safety Guidelines

    The isolation of the FP-DI-330 is certified as double insulated for normal operating voltages of 250 Vrms. Do not use the FP-DI-330 as the sole isolating barrier between human contact and working voltages of more than 250 Vrms. © National Instruments Corp. FP-DI-330...

  • Page 8: Specifications

    Specifications These specifications are typical for –40 to +70 °C unless otherwise noted. Input Characteristics Number of channels......8 Compatibility ........TTL, CMOS, 24 VDC, 48 VDC, 120/240 VAC Maximum input voltage....250 VAC or 250 VDC Digital logic levels Logic Level Minimum Maximum...
  • Page 9 Emissions ........EN 55011:1991 Group I Class A at 10 meters Mechanical Dimensions Figure 5 shows the mechanical dimensions of the FP-DI-330. Dimensions are given in inches [millimeters]. 4.22 [107.19] 4.31 [109.5] 3.60 [91.44] Figure 5. Mechanical Dimensions © National Instruments Corp. FP-DI-330...

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