National Instruments FP-DO-403, cFP-DO-403 User Manual

FIELDPOINT™ OPERATING INSTRUCTIONS
AND SPECIFICATIONS

FP-DO-403 and cFP-DO-403

16-Channel, 5 to 30 V Sinking Digital Output Module

These operating instructions describe how to install and use the
National Instruments FP-DO-403 and cFP-DO-403 digital output
modules, referred to inclusively as the [c]FP-DO-403. For
information about configuring and accessing the [c]FP-DO-403
over a network, refer to the user manual for the FieldPoint network
module you are using.

Features

The [c]FP-DO-403 is a FieldPoint digital output module with the
following features:

• 16 sinking digital output channels

• Outputs that sink 2 A per channel, 16 A

• Compatible with voltages from 5 to 30 VDC

• 250 V
verified by 2,300 V

• –40 to 70 °C operation

• ON/OFF LED indicators

• Hot swappable

CAT II continuous channel-to-ground isolation,

rms

, 5 s dielectric withstand test

rms

2

per module

Installing the FP-DO-403

The FP-DO-403 mounts on a FieldPoint terminal base (FP-TB-x),
which provides operating power to the module. Installing the
FP-DO-403 onto a powered terminal base does not disrupt the
operation of the bank.

To install the FP-DO-403, refer to Figure 1 and complete the
following steps:

1. Slide the terminal base key to either position X, used for any
module, or position 6, used for the FP-DO-403 module.

2. Align the FP-DO-403 alignment slots with the guide rails on
the terminal base.

3. Press firmly to seat the FP-DO-403 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

Figure 1. Installing the FP-DO-403

5 Latch
6 Guide Rails

2

Installing the cFP-DO-403

The cFP-DO-403 mounts on a Compact FieldPoint backplane
(cFP-BP-x), which provides operating power to the module.
Installing the cFP-DO-403 onto a powered backplane does not
disrupt the operation of the bank.

To install the cFP-DO-403, refer to Figure 2 and complete the
following steps:

1. Align the captive screws on the cFP-DO-403 with the screw
holes on the backplane. The alignment keys on the
cFP-DO-403 prevent backward insertion.

2. Press firmly to seat the cFP-DO-403 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
(10 lb ⋅ in.) of torque. The nylon coating on the screws prevents
them from loosening.

[c]FP-DO-403 2 ni.com

3 5

2

2

1

4

4

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

4 Screw Holes
5 cFP Backplane

Figure 2. Installing the cFP-DO-403

Wiring the [c]FP-DO-403

The FP-TB-x terminal base has connections for each FP-DO-403
output channel and for an external supply to power field devices.
The cFP-CB-x connector block provides the same connections for
the cFP-DO-403.

Each channel has one output terminal, V
share eight V

terminals and eight COM terminals. All of the

SUP

channels are referenced to the COM terminals. The V and V
terminals are all internally connected, as are the C and COM
terminals.

Use a 5–30 VDC external power supply for the output channels.
The power supply must provide enough current to power all of the

© National Instruments Corp. 3 [c]FP-DO-403

. The output channels

OUT

SUP

loads on the output channels, up to 2 A per channel.1 Connect
the external power supply to multiple V and V

terminals and

SUP

to multiple C and COM terminals as needed to ensure that the
maximum current through any terminal is 2 A or less.

Install a 2 A maximum, fast-acting fuse (F2A 250V) between the
external power supply and the V

terminal on each channel.

SUP

Install a 2 A maximum, fast-acting fuse suitable for the load at the
V

terminal. Figure 3 shows fuses where appropriate.

OUT

Table 1 lists the terminal assignments for the signals associated
with each channel. Terminal assignments and wiring diagrams are
also listed on the side panel of the cFP-DO-403 and under the
slide-in card on the front of the FP-DO-403 module.

Table 1. Terminal Assignments

Terminal Numbers

Channel

V

OUTVSUP

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

COM V

Channel

Terminal Numbers

OUTVSUP

COM

National Instruments recommends that you wire the external
power supply to multiple V

and COM terminals. Figure 3

SUP

shows how to connect two output channels to loads.

Wiring for Low-Current Applications

If your application requires 2 A or less combined current through
all channels of the [c]FP-DO-403, you can wire your application
as shown in Figure 3. Install a 2 A maximum, fast-acting fuse
(F2A 250V) between the external power supply and the V terminal
as shown.

1

Refer to the Digital Output Circuit and Specifications sections for the maximum
output current level on all channels.

[c]FP-DO-403 4 ni.com

2 A Max

User-Supplied

Fuse

V

V

[c]FP-DO-403

SUP

V

OUT

V

OUT

COM

C

Load

Load

5–30 VDC

External Power

Supply

+

–

Figure 3. Wiring for Low-Current Applications

Wiring for High-Current Applications

If your application requires more than 2 A combined current
through all channels of the [c]FP-DO-403, wire your application
as shown in Figure 4. Install a 2 A maximum, fast-acting fuse
(F2A 250V) in series with each load as shown.

2 A Max

User-Supplied

Fuse

V

2 A Max

User-Supplied

Fuse

Load

2 A Max

User-Supplied

Fuse

Load

5–30 VDC

External Power

Supply

+

–

[c]FP-DO-403

V

SUP

V

OUT

V

OUT

COM

C

Figure 4. Wiring for High-Current Applications

© National Instruments Corp. 5 [c]FP-DO-403