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

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 V
verified by 2,300 V

• –40 to 70 °C operation

• Hot swappable

CAT II continuous channel-to-ground isolation,

rms

, 1 minute dielectric withstand test

rms

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.

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.

4

5

3

6

1

1 I/O Module
2 Terminal Base
3 Alignment Slot

4Key
5 Latch
6 Guide Rails

Figure 1. Installing the FP-DI-330

2

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

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

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

3 5

2

2

1

1 cFP I/O Module
2 Captive Screws
3 cFP Controller Module

Figure 2. Installing the cFP-DI-330

4

4

4 Screw Holes
5 cFP Backplane

Wiring the [c]FP-DI-330

The FP-TB-x terminal base has connections for each FP-DI-330
input channel and for an external supply to power field devices.
The cFP-CB-x connector 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, IN
terminal, V

; and a common terminal, COM. All eight COM

SUP

terminals are internally connected to each other and to the
C terminals. All eight V

terminals are internally connected to

SUP

each other and to the V terminals.

and INb; a supply

a

© National Instruments Corp. 3 FP-DI-330 and cFP-DI-330

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-x terminal bases and the cFP-CB-x connector blocks.

Table 1. Terminal Assignments

Terminal Numbers

Channel

0 1 2 17 18

1 3 4 19 20

2 5 6 21 22

3 7 8 23 24

4 9 10 25 26

5 11 12 27 28

6 13 14 29 30

7 15 16 31 32

IN

a

IN

b

V

SUP

COM

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 V

Caution Ensure that hazardous voltage wiring is

or 60 VDC.

peak

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.

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

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 V
common potential.

2 A

Max

V

SUP

IN

(Ch 1)

IN

IN

IN

IN

IN

IN

IN

a

(Ch 1)

b

COM

V

(Ch 2)

a

(Ch 2)

b

COM

V

(Ch 3)

a

(Ch 3)

b

COM

V

(Ch 4)

a

(Ch 4)

b

COM

SUP

SUP

SUP

Input

Circuitry

Input

Circuitry

Input

Circuitry

Input

Circuitry

Sinking-

+

Output

Device

–

(NPN)

Sourcing-

Output

+

Device

(PNP)

–

Sinking-

Output
Device
(NPN)

Sourcing-

Output
Device
(PNP)

and COM share a

SUP

+

–

VC

Power Supply

5–250 V

External

V

SUP

(Ch n)

IN

Switch

IN

a

(Ch n)

b

COM

Input

Circuitry

To Next Channel

[c]FP-DI-330

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

© National Instruments Corp. 5 FP-DI-330 and cFP-DI-330