National Instruments FieldPoint FP-DI-330 Bedienungsanleitung

FieldPoint™Operating Instructions

FP-DI-330 and cFP-DI-330

Eight-Channel Universal Digital Input Module

These operating instructions describe how to install and use the

National Instruments FP-DI-330 and cFP-DI-330 digital input

modules (referred to inclusively as the [c]FP-DI-330). For

information about configuring and accessing the [c]FP-DI-330

over a network, refer to the user manual for the FieldPoint network

module you are using.

Features

The [c]FP-DI-330 is a FieldPoint digital input module with the

following features:

• Eight digital input channels

• Universal inputs that work with any voltage from 5 V TTL

level up to 250 VDC/VAC

• Compatibility with sourcing, sinking, or power-sensing

applications

• On/Off LED indicators

• 250 Vrms CAT II continuous channel-to-ground isolation,

verified by 2,300 Vrms, 1 minute dielectric withstand test

• –40 to 70 °C operation

• Hot swappable

Installing the FP-DI-330

The FP-DI-330 mounts on a FieldPoint terminal base (FP-TB-x),

which provides operating power to the module. Installing the

FP-DI-330 onto a powered terminal base does not disrupt the

operation of the bank.

FP-DI-330 and cFP-DI-330 2 ni.com

To install the FP-DI-330, refer to Figure 1 and complete the

following steps:

1. Slide the terminal base key to position X.

2. Align the FP-DI-330 alignment slots with the guide rails on the

terminal base.

3. Press firmly to seat the FP-DI-330 on the terminal base. When

the module is firmly seated, the terminal base latch locks it into

place.

Figure 1. Installing the FP-DI-330

Installing the cFP-DI-330

The cFP-DI-330 mounts on a Compact FieldPoint backplane

(cFP-BP-x), which provides operating power to the module.

Installing the cFP-DI-330 onto a powered backplane does not

disrupt the operation of the bank.

To install the cFP-DI-330, refer to Figure 2 and complete the

following steps:

1. Align the captive screws on the cFP-DI-330 with the holes on

the backplane. The alignment keys on the cFP-DI-330 prevent

backward insertion.

2. Press firmly to seat the cFP-DI-330 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

1 I/O Module

2 Terminal Base

3 Alignment Slot

4Key

5 Latch

6 Guide Rails

(10 lb ⋅in.) of torque. The nylon coating on the screws prevents

them from loosening.

Figure 2. Installing the cFP-DI-330

Wiring the [c]FP-DI-330

The FP-TB-xterminal base has connections for each FP-DI-330

input channel and for an external supply to power field devices.

The cFP-CB-xconnector block provides the same connections

for the cFP-DI-330. You can wire each channel to a switch,

a sourcing-output device, a sinking-output device, or a load.

Each channel has two input terminals, INaand INb; a supply

terminal, VSUP; and a common terminal, COM. All eight COM

terminals are internally connected to each other and to the

C terminals. All eight VSUP terminals are internally connected to

each other and to the V terminals.

1 cFP I/O Module

2 Captive Screws

3 cFP Controller Module

4 Screw Holes

5 cFP Backplane

3 5

FP-DI-330 and cFP-DI-330 4 ni.com

You can use a 5–250 VDC 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. The terminal assignments are the same for the

FP-TB-xterminal bases and the cFP-CB-xconnector blocks.

If you are using the cFP-DI-330 in a hazardous voltage

application, you must use the cFP-CB-1 connector block or a

suitable hazardous voltage cable. A hazardous voltage is a voltage

greater than 42.4 Vpeak or 60 VDC.

Caution Ensure that hazardous voltage wiring is

performed only by qualified personnel adhering to local

electrical standards.

Caution Do not mix circuits with hazardous voltages and

human-accessible circuits on the same module.

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.

Table 1. Terminal Assignments

Channel

Terminal Numbers

INaINbVSUP COM

01217 18

13419 20

25621 22

37823 24

4 9 10 25 26

511 12 27 28

613 14 29 30

715 16 31 32

Connecting Devices to the [c]FP-DI-330

Figure 3 shows how to connect several types of devices to channels

of the [c]FP-DI-330. Devices connected to VSUP and COM share a

common potential.

Figure 3. Connecting Devices to the [c]FP-DI-330

–

Sinking-

Output

Device

(NPN)

[c]FP-DI-330

VSUP

COM

Input

Circuitry

INb(Ch 1)

INa(Ch 1)

–

Sourcing-

Output

Device

(PNP)

VSUP

COM

Input

Circuitry

INb(Ch 2)

INa(Ch 2)

Sinking-

Output

Device

(NPN)

VSUP

COM

Input

Circuitry

INb(Ch 3)

INa(Ch 3)

Sourcing-

Output

Device

(PNP)

VSUP

COM

Input

Circuitry

INb(Ch 4)

INa(Ch 4)

Switch

VSUP

COM

Input

Circuitry

INb(Ch

)

INa(Ch

)

5–250 V

External

Power Supply

–

2 A

Max

To Next Channel

FP-DI-330 and cFP-DI-330 6 ni.com

Connecting a Switch to the [c]FP-DI-330

You can connect limit or control switches to the [c]FP-DI-330.

Connect a power supply to the V and C terminals of the

[c]FP-DI-330. Connect the INaand the VSUP terminals to the

switch.

Figure 4. Wiring the [c]FP-DI-330 to a Switch

Connecting a Sourcing-Output Device

to the [c]FP-DI-330

To connect a sourcing-output device to the [c]FP-DI-330, connect

a power supply to the V and C terminals of the [c]FP-DI-330.

Connect the VSUP, INa, INb, and COM terminals to the

sourcing-output device.

Figure 5. Wiring the [c]FP-DI-330 to a Sourcing-Output Device

Switch

[c]FP-DI-330

SUP

COM

Input

Circuitry

5–250 V

External

Power Supply

–

2 A

Max

Sourcing-

Output

Device

(PNP)

[c]FP-DI-330

VSUP

COM

Input

Circuitry

INb

INa

5–250 V

External

Power Supply

–

2 A

Max

If the sourcing-output device is connected to a power supply,

connect the power supply to the INbterminal of the [c]FP-DI-330.

Figure 6. Wiring the [c]FP-DI-330 to an Externally Powered

Sourcing-Output Device

Connecting a Sinking-Output Device

to the [c]FP-DI-330

To connect a sinking-output device to the [c]FP-DI-330, connect

a power supply to the V and C terminals of the [c]FP-DI-330.

Connect the VSUP, INa, INb, and COM terminals to the

sinking-output device.

Figure 7. Wiring the [c]FP-DI-330 to a Sinking-Output Device

–

Sourcing-

Output

Device

(PNP)

[c]FP-DI-330

VSUP

COM

Input

Circuitry

INb

INa

Sinking-

Output

Device

(NPN)

[c]FP-DI-330

VSUP

COM

Input

Circuitry

INb

INa

5–250 V

External

Power Supply

–

2 A

Max

FP-DI-330 and cFP-DI-330 8 ni.com

If the sinking-output device is connected to a power supply,

connect the power supply to the INaterminal of the [c]FP-DI-330.

Figure 8. Wiring the [c]FP-DI-330 to an Externally Powered

Sinking-Output Device

Connecting a Load to the [c]FP-DI-330

If you want to use the [c]FP-DI-330 to sense the power that is

applied to a load, connect the INaand INbterminals to the load.

Figure 9. Wiring the [c]FP-DI-330 to a Load

Universal Input Circuit

The [c]FP-DI-330 has eight current-limited universal input

channels with bi-directional optical isolators. Each channel has

two interchangeable signal inputs, INaand INb. When you apply

a voltage across the INaand INbterminals, signal current flows

through the input circuitry and turns on the optical isolator,

registering as an ON condition. The current-limiting circuitry

limits the amount of current flow to 1.5 mA.

–

Sinking-

Output

Device

(NPN)

[c]FP-DI-330

VSUP

COM

Input

Circuitry

INb

INa

Load

[c]FP-DI-330

SUP

COM

Input

Circuitry

–

Figure 10 shows the input circuitry for a single channel.

Figure 10. [c]FP-DI-330 Input Circuit

Sensing DC Voltages

When an external device applies a positive or negative DC voltage

with a magnitude of at least 4 V across the INaand INbterminals,

the [c]FP-DI-330 registers an ON condition. The [c]FP-DI-330

limits the current drawn by the input circuit to approximately

1.5 mA for voltages up to 250 V.

When an external device applies a voltage with a magnitude of less

than 1 V to the INaand INbterminals, the [c]FP-DI-330 registers

an OFF condition. When the external device applies a voltage

between –4 and –1 V or between 1 and 4 V, the [c]FP-DI-330 may

or may not register an ON condition.

Ensure that the devices you connect to the [c]FP-DI-330 have

OFF-state leakage currents lower than 350 µA. Higher leakage

currents can cause false ON readings.

The filter on the [c]FP-DI-330 inputs cause a delay of

approximately 1.2 ms between the time a voltage changes from the

ON state to the OFF state and the time the [c]FP-DI-330 recognizes

the change. The delay for a transition from an OFF to an ON state

is approximately 0.2 µs.

Sensing AC Voltages

The [c]FP-DI-330 senses a wide range of AC signals. The

minimum ON-state voltage for an AC signal depends on the

frequency of the signal. When an external device applies a voltage

between 1 V and the minimum ON-state voltage across the input

terminals, the channel may or may not register an ON condition.

INa

VSUP

COM

INb

Status

Indicators

Optical

Isolation

[c]FP-DI-330

Current

Limiter AC Smoothing

Filter

FP-DI-330 and cFP-DI-330 10 ni.com

The AC smoothing filter shown in Figure 10 ensures that the

channel remains ON if the signal frequency is higher than 50 Hz

and the signal voltage is higher than the minimum ON state. Refer

to the Specifications section for more information about minimum

ON-state voltages and digital logic levels.

Status Indicators

Figure 11 shows the status indicator LEDs on the [c]FP-DI-330.

Figure 11. Status Indicators

The [c]FP-DI-330 has two green status LEDs, POWER and

READY. After you insert the [c]FP-DI-330 into a terminal base

or backplane and apply power to the connected network module,

the green POWER indicator lights and the [c]FP-DI-330 informs

the network module of its presence. When the network module

recognizes the [c]FP-DI-330, it sends initial configuration

information to the [c]FP-DI-330. After the [c]FP-DI-330 receives

this initial information, the green READY indicator lights and the

module is in normal operating mode.

In addition to the green POWER and READY indicators, each

channel has a numbered green status indicator that lights when the

channel is in the ON state.

Isolation and Safety Guidelines

Caution Read the following information before

attempting to connect the [c]FP-DI-330 to any circuits

that may contain hazardous voltages.

This section describes the isolation of the [c]FP-DI-330 and its

compliance with international safety standards. The field wiring

connections are isolated from the backplane and the inter-module

communication bus. The isolation barriers in the module provide

250 Vrms Installation Category II continuous isolation, verified by

2,300 Vrms, 1 minute dielectric withstand test. The [c]FP-DI-330

provides double insulation (compliant with IEC 61010-1) for

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