National Instruments FieldPoint FP-DI-301 Bedienungsanleitung

FieldPoint ™is a trademark of National Instruments Corporation. Product and company names

mentioned herein are trademarks or trade names of their respective companies.

OPERATING INSTRUCTIONS

FP-DI-301

8-Channel, 24 V Discrete Input Module

These operating instructions describe the installation, features, and

characteristics of the FP-DI-301. For details on configuring and

accessing the FP-DI-301 over a network, refer to the user manual

for the particular FieldPoint network module you are using with

the FP-DI-301.

Features

The FP-DI-301 is a FieldPoint discrete input module with the

following features:

• 16 discrete input channels

• Sinking inputs, compatible with 24 VDC sourcing outputs

• 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-301 mounts on a FieldPoint terminal base (FP-TB-xx)

unit. The hot plug and play operation of the FP-DI-301 allows you

to install it onto a powered terminal base without disturbing

the operation of other modules or terminal bases. The FP-DI-301

receives operating power from the terminal base.

FP-DI-301 2 www.natinst.com

To install the FP-DI-301, refer to Figure 1 and follow these steps:

1. Slide the terminal base key to either position X (used for any

module) or position 5 (used for the FP-DI-301 module).

2. Align the FP-DI-301 alignmentslots with theguide rails on the

terminal base.

3. Press firmly to seat the FP-DI-301 on the terminal base. The

terminal base latch locks the FP-DI-301 into place when it is

firmly seated.

Figure 1. Module Installation Diagram

Field Wiring

The terminal base provides connections for each of the 16 input

channels and an external supply to power field devices. Each

channel can be wired for use with a sourcing output device.

Figures 2a and 2b show examples of these basic wiring

connections. The connection of an external supply to power field

devices is made to the V and C terminals of theterminal base. Each

channel has one input terminal, Vin. In addition, there are eight

common terminals, COM (internally connected to the C terminal)

and eight supply terminals, Vsup (internally connected to the

V terminal).

Alignment

Slot

Key

Latch

Guide Rails

Terminal BaseI/O Module

Figure 2. Basic Field Connections to Sourcing Output Devices

Table 1 lists the terminal assignments for the signals associated

with each channel.

Table 1. Terminal Assignments

Channel

Terminal Numbers

Channel

Terminal Numbers

Vin Vsup COM Vin Vsup COM

0 1 17 18 8 9 25 26

1 2 17 18 9 10 25 26

2 3 19 20 10 11 27 28

3 4 19 20 11 12 27 28

4 5 21 22 12 13 29 30

5 6 21 22 13 14 29 30

6 7 23 24 14 15 31 32

7 8 23 24 15 16 31 32

–

a. Three-Wire Sourcing Outputs

Powered from FP-DI-301

Vin

COM

b. Externally Powered

Sourcing Outputs

Vsup

Input

Circuitry

Vin

COM

Vsup

Input

Circuitry

C+

–

Vin

Input

Circuitry

Vin

Input

Circuitry

FP-DI-301 4 www.natinst.com

Discrete Input Circuit

The inputs of the FP-DI-301 consist of optical isolators with

current-limiting resistors. Each channel has one signal input, Vin,

which is referenced to the common, COM. When a voltage above

the threshold voltage is applied to the Vin input of a channel, signal

current flows through the input and turns on the optical isolator,

registering as an ON condition. The threshold voltage is typically

10 V, but may be as low as 5 V or as high as 15 V.

The FP-DI-301 has sinking inputs, which means that the inputs

sink current from the Vin terminal to the common COM terminal.

This makes the inputs compatible with sourcing output devices

capable of sourcing or driving current from a positive supply

voltagetocommon.TheFP-DO-400 andFP-DO-401are examples

for sourcing output devices.

Figure 2 shows connections to sourcing output devices. These

devices should have OFF state leakage currents of less than 1 mA

to ensure that they do not provide false ON state readings to the

FP-DI-301.

Status Indicators

Figure 3 shows the module label and status indicators. You can

remove the insertable label to see wiring diagrams for the input

channels.

Figure 3. Status Indicators

After the module has been inserted into a terminal base (and

power is applied), the green POWER indicator turns on and the

FP-DI-301 informs the network module of its presence. When

the network module recognizes the FP-DI-301, it sends initial

configuration information to the FP-DI-301. After receiving, this

READY indicator turns on and the FP-DI-301 is in its normal

operating mode. In addition to the green POWER and READY

indicators, each channel has a numbered green status indicator

which lights when the channel is in the ON state.

Isolation and Safety Guidelines

Caution Read the following information before

attempting to connect ANY circuits which may contain

hazardous voltages to the FP-DI-301.

This section describes the isolation of the FP-DI-301 and its

compliance with international safety standards. The field wiring

connections of the FP-DI-301 are isolated from the backplane

providedbytheterminalbase withan opticaland galvanicisolation

barrier designed and tested to provide protection against fault

voltages of up to 3000 Vrms. In addition, the FP-DI-301 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 specifically designed (as

the FP-DI-301 is) for such an application.

Even when a product like the FP-DI-301 is used in applications

with hazardous potentials, follow these guidelines to ensure a safe

total system.

• The safety isolation of the FP-DI-301 is from input to output,

not between channels on the same module. If any of the

channels on a module are wired at a hazardous potential,

ensure that all other devices or circuits connected to that

module are properly insulated from human contact.

•Donot share the external supply voltages (V and C on the

terminal base) with other devices (including other FieldPoint

devices) unless those devices are also isolated from human

contact.

• As with any hazardous voltage wiring, ensure that all wiring

and connections meet with applicable electrical codes or

common sense practices. Mount terminal bases in an area,

FP-DI-301 6 www.natinst.com

position, or cabinet that prevents accidental or unauthorized

access to wiring with hazardous voltages.

• The isolation of the FP-DI-301 is certified as double insulated

for normal operating voltages of 250 Vrms. Do not use the

FP-DI-301 as the sole isolating barrier between human contact

and working voltages of more than 250 Vrms.

Specifications

These specifications are typical for the range –40 to +70 °C unless

otherwise noted.

Input Characteristics

Number of channels..........................16

Input type..........................................24 VDC sinking inputs

Maximum input voltage....................30 VDC

Input threshold level .........................10 VDC typical

5 VDC minimum

15 VDC maximum

Input impedance................................5 kOhm

Input delay times...............................1 ms

Isolation ............................................3,000 Vrms

Safety isolation, working voltage .....250 Vrms, designed per IEC

1010 as double insulated

Physical

Indicators ..........................................Green POWER and

READYindicators,16 green

input state indicators

Weight...............................................130 g (4.5 oz.)

Power Requirements

Power from network module ............325 mW

Environment

Operating temperature......................–40 to +70 °C

Storage temperature..........................–55 to +100 °C

Relative humidity..............................5% to 90% non-condensing

CE Mark Compliance

This product meets applicable EU directive(s) as follows:

Safety isolation .................................EN 61010 (double insulation

for 250 Vrms working

isolation, installation

category II)

EMC directive

Immunity....................................EN 50082-1:1994

Emissions ...................................EN 55011:1991 Group I

Class A at 10 meters

Mechanical Dimensions

Figure 4 shows the mechanical dimensions of the FP-DI-301

installed onto a terminal base. Dimensions are given in inches

[millimeters].

Figure 4. Mechanical Dimensions

4.31

[109.5]

3.60 [91.44]

4.22 [107.19]

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