National Instruments FieldPoint FP-DIO-550 User manual

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FieldPoint™Operating Instructions
FP-DIO-550 and cFP-DIO-550
Eight-Channel Digital Input,
Eight-Channel Digital Output Module
These operating instructions describe how to install and use the
National Instruments FP-DIO-550 and cFP-DIO-550 digital I/O
modules, referred to inclusively as the [c]FP-DIO-550. For
information about configuring and accessing the [c]FP-DIO-550
over a network, refer to the user manual for the FieldPoint network
module you are using.
Features
The [c]FP-DIO-550 is a FieldPoint digital I/O module with the
following features:
• Eight digital input channels compatible with sinking, sourcing,
and differential devices
• Eight sourcing digital output channels
• Up to 30 VDC digital input
• Up to 30 VDC, 250 mA digital output
• On/Off LED indicators
•250V
rms CAT II continuous channel-to-ground isolation,
verified by 2,300 Vrms , 5 s dielectric withstand test
• Hot swappable
Installing the FP-DIO-550
The FP-DIO-550 mounts on a FieldPoint terminal base (FP-TB-x),
which provides operating power to the module. Installing the
FP-DIO-550 onto a powered terminal base does not disrupt the
operation of the bank.
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To install the FP-DIO-550, refer to Figure 1 and complete the
following steps:
1. Slide the terminal base key to position X.
2. Align the FP-DIO-550 alignment slots with the guide rails on
the terminal base.
3. Press firmly to seat the FP-DIO-550 on the terminal base.
When the module is firmly seated, the terminal base latch locks
it into place.
Figure 1. Installing the FP-DIO-550
Installing the cFP-DIO-550
The cFP-DIO-550 mounts on a Compact FieldPoint backplane
(cFP-BP-x), which provides operating power to the module.
Installing the cFP-DIO-550 onto a powered backplane does not
disrupt the operation of the bank.
To install the cFP-DIO-550, refer to Figure 2 and complete the
following steps:
1. Align the captive screws on the cFP-DIO-550 with the holes
on the backplane. The alignment keys on the cFP-DIO-550
prevent backward insertion.
2. Press firmly to seat the cFP-DIO-550 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.
1 I/O Module
2TerminalBase
3 Alignment Slot
4Key
5Latch
6 Guide Rails
1
3
2
4
5
6
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© National Instruments Corp. 3 FP-DIO-550 and cFP-DIO-550
Figure 2. Installing the cFP-DIO-550
Wiring the [c]FP-DIO-550
The FP-TB-xterminal base has connections for each FP-DIO-550
input and output channel, and for an external power supply to
power field devices. The cFP-CB-xconnector block provides the
same connections for the cFP-DIO-550.
Each input channel has two input terminals, IN+ and IN–. Each
output channel has one output terminal, VOUT, and one COM
terminal. All eight output channels are referenced to the COM
terminals. The C and COM terminals are all internally connected.
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 each V terminal can never exceed 2 A.
1 cFP I/O Module
2 Captive Screws
3 cFP Controller Module
4 Screw Holes
5 cFP Backplane
2
2
1
3 5
4
4
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Install a 2 A maximum, fast-acting fuse between the external
power supply and the V terminals. The wiring diagrams in this
document show fuses where appropriate.
Table 1. Input Terminal Assignments
Channel
Terminal Numbers
IN+ IN–
In 0 1 2
In 1 3 4
In 2 5 6
In 3 7 8
In 4 17 18
In 5 19 20
In 6 21 22
In 7 23 24
Table 2. Output Terminal Assignments
Channel
Terminal Numbers
VOUT COM
Out 0 9 10
Out 1 11 12
Out 2 13 14
Out 3 15 16
Out 4 25 26
Out 5 27 28
Out 6 29 30
Out 7 31 32
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© National Instruments Corp. 5 FP-DIO-550 and cFP-DIO-550
Digital Input
The [c]FP-DIO-550 has eight current-limited input channels with
optical isolators. Each channel has two input terminals, IN+and
IN–. When the voltage across the IN+and IN–terminals is at least
11 V, signal current flows through the input and turns on the optical
isolator, and the channel is ON. The current-limiting circuitry
limits the amount of current flow to 7 mA.
When the voltage across the IN+and IN–terminals is less than 5 V,
the channel is OFF. When the voltage is between 5 and 11 V, the
channel may be ON or OFF.
The input channels are floating, which means that they do not share
a common ground reference. Make sure that there is no more than
30 V difference between any two input terminals.
Figure 3 shows the input circuitry of a single channel.
Figure 3. [c]FP-DIO-550 Input Circuit
The devices you connect to the [c]FP-DIO-550 should have
OFF-state leakage currents of less than 300 μA to ensure that
they do not cause false ON readings.
Digital Input Filter
Each input channel has a filter that can prevent electrical noise
from causing false readings. In Measurement & Automation
Explorer (MAX), you can select a value from 0 to 65,535 μs for the
digital input filter on each channel. The filter rejects pulses that are
1 μs or more shorter than the length you select. If you select 0 μs,
the filter is disabled.
IN+
IN–
Status
Indicator
Optical
Isolation
[c]FP-DIO-550
Current
Limiter
VC
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Input Latching
In MAX, you can configure each input channel to operate in either
standard mode or latch mode. In standard mode, the channel
returns a value of TRUE when the input is high and FALSE when
the input is low. In latch mode, the channel latches to one value
when it detects a specific input signal state and retains that value
until you reset the channel. The two latch modes are Latch TRUE
on high and Latch FALSE on low. If the channel is in Latch TRUE
on high mode, it returns TRUE when it detects a high input signal
and continues to return TRUE until the channel is reset, regardless
of subsequent changes to the input signal. If the channel is in Latch
FALSE on low mode, it returns FALSE when it detects a low input
signal and continues to return FALSE until the channel is reset. To
unlatch and reset the channel, send the Reset Latch command.
Note If the input signal matches the value that the
channel is configured to detect when you put the
channel in one of the latch modes, the channel latches
immediately. Similarly, if you attempt to reset the
channel when the input signal is in the state that the
channel is set to detect, the channel will not reset.
You can use input latching to detect short signal pulses that
software polling might otherwise miss.
Connecting a Differential-Output Device
to the [c]FP-DIO-550
You can connect a differential-output device to an input channel of
the [c]FP-DIO-550. Connect the positive lead to the IN+ terminal
of the channel and connect the negative lead to the IN– terminal of
the channel. Refer to Figure 4.
Figure 4. Connecting a Differential-Output Device
to One Channel of the [c]FP-DIO-550
IN–
IN+
Input
Circuitry
Differential
Output
Device
VC
+
–
[c]FP-DIO-550
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© National Instruments Corp. 7 FP-DIO-550 and cFP-DIO-550
Connecting a Sinking-Output Device
to the [c]FP-DIO-550
You can connect an externally powered sinking-output device to an
input channel of the [c]FP-DIO-550. A sinking-output device
provides a path to ground. Connect the positive terminal of the
power supply to the IN+ terminal of the channel and connect the
output terminal of the device to the IN– terminal of the channel.
Refer to Figure 5.
Figure 5. Connecting an Externally Powered Sinking-Output Device
to One Channel of the [c]FP-DIO-550
Connecting a Sourcing-Output Device
to the [c]FP-DIO-550
You can connect an externally powered sourcing-output device to
an input channel of the [c]FP-DIO-550. A sourcing-output device
provides a path to a voltage source. Connect the output terminal
of the device to the IN+ terminal of the channel and connect the
negative terminal of the external power supply to the IN– terminal
of the channel. Refer to Figure 6.
Figure 6. Connecting an Externally Powered Sourcing-Output Device
to One Channel of the [c]FP-DIO-550
IN–
IN+
Input
Circuitry
Sinking-
Output
Device
(NPN)
VC
+
–
[c]FP-DIO-550
External
Power
Supply
(30 V Max)
IN–
IN+
Input
Circuitry
Sourcing-
Output
Device
(PNP)
VC
+
–
External
Power
Supply
(30 V Max)
[c]FP-DIO-550
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Digital Output Circuit
The [c]FP-DIO-550 digital output channels are optically isolated
from the rest of the FieldPoint bank. The channels are sourcing
outputs, which means that the output terminal provides a path to
a voltage supply.
In the ON state, a transistor is turned on between the V terminal
and the VOUT terminal. In the OFF state, this transistor is turned off,
allowing only a small leakage current to flow.
Ensure that the load on any channel does not draw more than
250 mA.
Caution Do not short-circuit outputs to C or COM
terminals. Short circuits can damage the outputs. Check
all wiring carefully before applying power.
In the ON state, the maximum effective resistance between the
VOUT terminal and the V terminal is 200 mΩ. This resistance
causes a voltage drop between the external supply voltage and the
output voltage. Table 3 lists the minimum output voltages based on
the voltage provided by the external power supply.
Table 3. [c]FP-DIO-550 Output Voltages for 250 mA Current Flow
VVOUT
10 9.95
12 11.95
24 23.95
30 29.95
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© National Instruments Corp. 9 FP-DIO-550 and cFP-DIO-550
Figure 7. Digital Output Circuit
If the external power supply you are using does not provide one of
the voltages in Table 3, use the following equation to calculate the
actual voltage output.
ActualOutput = Vext – (I0×0.20 Ω)
where ActualOutput is the voltage sourced by VOUT
Vext is the voltage provided by the external power supply
I0is the current flow through the VOUT terminal
Output Pattern Matching
Pattern match mode enables you to configure output channels to
respond directly to specific patterns of states on the input channels.
In MAX, you can configure each output channel to turn on or off
if the input pattern occurs. Also, you can configure each output
channel to latch on or off until it is reset or to update continually
based on the input pattern.
VOUT
COM
C
[c]FP-DIO-550
Optocoupler Output
Protection
V
Load
2 A
Max –
+10–30 VDC
External
Power
Supply
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The following table shows the four pattern match modes.
Table 4. Pattern Match Modes and How They Affect Channel Behavior
To specify the input pattern you want to detect, you must enter the
pattern mask and pattern value in MAX. The mask identifies the
input channels included in the pattern, and the value specifies
which state the inputs must be in for a positive match. The mask
and the value are eight-bit binary numbers, and you must convert
them to decimal before entering them in MAX. The eight bits
correspond to the eight input channels. A 1 in bit position nin the
mask means that input channel nis part of the pattern. A 0 in bit
position nin the mask means that the channel is not part of the
pattern. A 1 in bit position nin the pattern value means that input
channel nmust be on for a successful match. A 0 in bit position n
in the pattern value means that input channel nmust be off for a
successful match.
For example, suppose you want output channel 2 to turn on when
the following condition is true and turn off when the condition is
not true: Input channel 7 is on, 5 is off, 2 is on, and 1 is off. The
other input channels do not matter in this pattern. The following
table shows the bits in this pattern mask.
Pattern Match Mode Behavior
Set High During Match The output turns on when the input
pattern is detected and turns off when the
pattern is not detected.
Set Low During Match The output turns off when the input
pattern is detected and turns on when the
pattern is not detected.
Latch High On Match The output latches on when the input
pattern is detected. The output stays on
until it is cleared from software at which
point it turns off until the input pattern is
present again.
Latch Low On Match The output latches off when the input
pattern is detected. The output stays off
until it is cleared from software at which
point it turns on until the input pattern is
present again.
Channel 7 6 5 4 3 2 1 0
Bit 1 0 1 0 0 1 1 0
Conversion ×128 ×64 ×32 ×16 ×8 ×4 ×2 ×1
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© National Instruments Corp. 11 FP-DIO-550 and cFP-DIO-550
In this example, the binary mask 10100110 converts to 166.
The following table shows the bits in the pattern value.
The binary value 10000100 converts to 132. To configure this
example, set output channel 2 mode to Set High During Match. Set
the Pattern Match Mask to 166. Set the Pattern Match Value to 132.
Protection for Inductive Loads
When an inductive load, such as a motor or relay, is connected
to an output, a large counter-electromotive force may occur at
switching time because of the energy stored in the inductive load.
This flyback voltage can damage the output and the power supply.
It is best to limit flyback voltages by installing a flyback diode
across an inductive load. Typically, you should mount the flyback
diode within 18 in. of the load. Figure 8 shows one channel
connected to an inductive load with a flyback diode.
Figure 8. Digital Output Circuit (External Power Supply Not Shown)
The [c]FP-DIO-550 contains flyback diodes to prevent excessively
high voltage from damaging the module. National Instruments still
recommends using an external protection circuit across any
inductive load.
Channel 7 6 5 4 3 2 1 0
Bit 1 0 0 0 0 1 0 0
Conversion ×128 ×64 ×32 ×16 ×8 ×4 ×2 ×1
VOUT
COM
C
[c]FP-DIO-550
Optocoupler Output
Protection
V
Flyback Diode
for Inductive Load
Load
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Status Indicators
The [c]FP-DIO-550 has two green status LEDs, POWER and
READY. After you insert the FP-DIO-550 into a terminal base or
the cFP-DIO-550 into a backplane and apply power to the
connected network module, the green POWER indicator lights
and the [c]FP-DIO-550 informs the network module of its
presence. When the network module recognizes the
[c]FP-DIO-550, it sends initial configuration information to the
[c]FP-DIO-550. After the [c]FP-DIO-550 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-DIO-550 to any circuits
that may contain hazardous voltages.
This section describes the isolation of the [c]FP-DIO-550 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 Measurement Category II continuous isolation, verified
by 2,300 Vrms , 5 s dielectric withstand test. The [c]FP-DIO-550
provides double insulation (compliant with IEC 61010-1) for
working voltages of 250 Vrms1. 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.
Never try to use any isolation product between human-accessible
parts (such as DIN rails or monitoring stations) and circuits that
can be at hazardous potentials under normal conditions, unless the
product is specifically designed for such an application, as is the
[c]FP-DIO-550.
1 Working voltage is defined as the signal voltage plus the common-mode voltage.
Common-mode voltage is the voltage of the module with respect to ground.
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© National Instruments Corp. 13 FP-DIO-550 and cFP-DIO-550
Even though the [c]FP-DIO-550 is designed to handle applications
with hazardous potentials, follow these guidelines to ensure a safe
total system:
• There is no isolation between channels on the [c]FP-DIO-550.
If a hazardous voltage is present on any channel, all channels
are considered hazardous. Make sure that all other devices and
circuits connected to the module are properly insulated from
human contact.
•Donot share the external supply voltages (the V and C
terminals) with other devices (including other FieldPoint
devices), unless those devices are isolated from human contact.
• For Compact FieldPoint, you must connect the protective earth
(PE) ground terminal on the cFP-BP-xbackplane to the system
safety ground. The backplane PE ground terminal has the
following symbol stamped beside it: . Connect the
backplane PE ground terminal to the system safety ground
using 14 AWG (1.6 mm) wire with a ring lug. Use the 5/16 in.
panhead screw shipped with the backplane to secure the ring
lug to the backplane PE ground terminal.
• As with any hazardous voltage wiring, make sure that all
wiring and connections meet applicable electrical codes and
commonsense practices. Mount terminal bases and backplanes
in an area, position, or cabinet that prevents accidental or
unauthorized access to wiring that carries hazardous voltages.
•Donot use the [c]FP-DIO-550 as the only isolating barrier
between human contact and working voltages higher than
250 Vrms .
• Operate the [c]FP-DIO-550 only at or below Pollution
Degree 2. Pollution Degree 2 means that only nonconductive
pollution occurs in most cases. Occasionally, however, a
temporary conductivity caused by condensation must be
expected.
• Operate the [c]FP-DIO-550 at or below Measurement
Category II. Measurement Category II is for measurements
performed on circuits directly connected to the low-voltage
installation. This category refers to local-level distribution,
such as that provided by a standard wall outlet.
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Safety Guidelines for Hazardous Locations
The [c]FP-DIO-550 is suitable for use in Class I, Division 2,
Groups A, B, C, D, T4 hazardous locations; Class I, Zone 2,
AEx nA IIC T4 and Ex nA IIC T4 hazardous locations; and
nonhazardous locations only. Follow these guidelines if you are
installing the [c]FP-DIO-550 in a potentially explosive
environment. Failing to follow these guidelines may result in
serious injury or death.
Caution Make sure that all products you use in hazardous
locations are certified for such use. Refer to the product
label or visit ni.com/certification, search by model
number or product line, and click the appropriate link in
the Certification column.
Caution Do not disconnect I/O-side wires or connectors
unless power has been switched off or the area is known
to be nonhazardous.
Caution Do not remove modules unless power has been
switched off or the area is known to be nonhazardous.
Caution Substitution of components may impair
suitability for Class I, Division 2.
Caution For Zone 2 applications, install the FieldPoint
system in an enclosure rated to at least IP 54 as defined
by IEC 60529 and EN 60529.
Caution For Zone 2 applications, install a protection
device across the external power supply and the COM
terminal. The device must prevent the external power
supply voltage from exceeding 42 V if there is a transient
overvoltage condition.
Special Conditions for Hazardous Locations Use in Europe
The [c]FP-DIO-550 has been evaluated as EEx nC IIC T4
equipment under DEMKO Certificate No. 03 ATEX 0251502X.
Each module is marked II 3G and is suitable for use in Zone 2
hazardous locations.
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© National Instruments Corp. 15 FP-DIO-550 and cFP-DIO-550
Specifications
These specifications are typical for – 40 to 50 °C unless otherwise
noted. Specifications are subject to change without notice.
Input Characteristics
Number of channels..........................8
Input type .......................................... Sinking, sourcing, or
differential
Maximum input voltage.................... 30 VDC
Digital logic levels
OFF state ....................................≤5 VDC
ON state...................................... 11–30 VDC
Input current...................................... 7 mA max
Input delay time ................................100 μs max
Maximum reverse voltage................. 30 VDC
Output Characteristics
Number of channels..........................8
Output type ....................................... Sourcing
Supply voltage range (Vext)............... 10–30 V
Output voltage .................................. Vext – (I0R0)
Output impedance (R0) ..................... 200 mΩmax
Continuous output current (I0).......... 250 mA max
Output protection.............................. Short circuit
Physical Characteristics
Indicators .......................................... Green POWER and
READY indicators,
16 green ON/OFF indicators
Weight
FP-DIO-550................................ 141 g (5.0 oz)
cFP-DIO-550.............................. 111 g (4.0 oz)
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Power Requirements
Power from network module ............ 600 mW
Isolation Voltage
Channel-to-ground isolation
Continuous ................................. 250 Vrms, Measurement
Category II
Dielectric withstand.................... 2,300 Vrms, 5 s
Channel-to-channel isolation ............ None
Environmental
FieldPoint modules are intended for indoor use only. For outdoor
use, they must be mounted inside a sealed enclosure.
Operating temperature
Input voltage ≤25 V....................–40 to 70 °C
Input voltage ≤30 V....................–40 to 50 °C
Storage temperature..........................–45 to 85 °C
Humidity ........................................... 10 to 90% RH,
noncondensing
Maximum altitude............................. 2,000 m; at higher altitudes
the isolation voltage ratings
must be lowered
Pollution Degree ............................... 2
Shock and Vibration
These specifications apply only to the cFP-DIO-550.
NI recommends Compact FieldPoint if your application is
subject to shock and vibration.
Operating vibration, random
(IEC 60068-2-64).............................. 10 –500 Hz, 5 grms
Operating vibration, sinusoidal
(IEC 60068-2-6)................................ 10–500 Hz, 5 g
Operating shock
(IEC 60068-2-27).............................. 50 g, 3 ms half sine,
18 shocks at 6 orientations;
30 g, 11 ms half sine,
18 shocks at 6 orientations
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© National Instruments Corp. 17 FP-DIO-550 and cFP-DIO-550
Safety
This product is designed to meet the requirements of the following
standards of safety for electrical equipment for measurement,
control, and laboratory use:
• IEC 61010-1, EN-61010-1
• UL 61010-1, CAN/CSA-C22.2 No. 61010-1
Note For UL and other safety certifications, refer to the
product label or visit ni.com/certification, search
by model number or product line, and click the
appropriate link in the Certification column.
Electromagnetic Compatibility
This product is designed to meet the requirements of the following
standards of EMC for electrical equipment for measurement,
control, and laboratory use:
• EN 61326 EMC requirements; Industrial Immunity
• EN 55011 Emissions; Group 1, Class A
• CE, C-Tick, ICES, and FCC Part 15 Emissions; Class A
CE Compliance
This product meets the essential requirements of applicable
European Directives, as amended for CE marking, as follows:
• 73/23/EEC; Low-Voltage Directive (safety)
• 89/336/EEC; Electromagnetic Compatibility Directive (EMC)
Note Refer to the Declaration of Conformity (DoC) for
this product for any additional regulatory compliance
information. To obtain the DoC for this product, visit
ni.com/certification, search by model number or
product line, and click the appropriate link in the
Certification column.
Waste Electrical and Electronic Equipment (WEEE)
EU Customers At the end of their life cycle, all products
must be sent to a WEEE recycling center. For more
information about WEEE recycling centers and National
Instruments WEEE initiatives, visit ni.com/
environment/weee.htm.
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FP-DIO-550 and cFP-DIO-550 18 ni.com
Mechanical Dimensions
Figure 9 shows the mechanical dimensions of the FP-DIO-550
installed on a terminal base. If you are using the cFP-DIO-550,
refer to your Compact FieldPoint controller user manual for the
dimensions and cabling clearance requirements of the Compact
FieldPoint system.
Figure 9. FP-DIO-550 Mechanical Dimensions
Where to Go for Support
For more information about setting up the FieldPoint system, refer
to these National Instruments documents:
• FieldPoint network module user manual
• Other FieldPoint I/O module operating instructions
• FieldPoint terminal base and connector block operating
instructions
Go to ni.com/support for the most current manuals, examples,
and troubleshooting information.
National Instruments corporate headquarters is located at 11500
North Mopac Expressway, Austin, Texas, 78759-3504. National
Instruments also has offices located around the world to help
address your support needs. For telephone support in the United
States, create your service request at ni.com/support and follow
the calling instructions or dial 512 795 8248. For telephone support
outside the United States, contact your local branch office:
Australia 1800 300 800, Austria 43 0 662 45 79 90 0,
Belgium32027570020,Brazil551132623599,
Canada 800 433 3488, China 86 21 6555 7838,
Czech Republic 420 224 235 774, Denmark 45 45 76 26 00,
Finland 385 0 9 725 725 11, France 33 0 1 48 14 24 24,
109.5 mm
(4.31 in.)
91.44 mm
(3.60 in.)
107.19 mm
(4.22 in.)
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© National Instruments Corp. 19 FP-DIO-550 and cFP-DIO-550
Germany 49 0 89 741 31 30, India 91 80 41190000,
Israel972036393737,Italy3902413091,
Japan 81 3 5472 2970, Korea 82 02 3451 3400,
Lebanon 961 0 1 33 28 28, Malaysia 1800 887710,
Mexico 01 800 010 0793, Netherlands 31 0 348 433 466,
NewZealand0800553322,Norway47066907660,
Poland 48 22 3390150, Portugal 351 210 311 210,
Russia 7 095 783 68 51, Singapore 1800 226 5886,
Slovenia 386 3 425 4200, South Africa 27 0 11 805 8197,
Spain34916400085,Sweden460858789500,
Switzerland 41 56 200 51 51, Taiwan 886 02 2377 2222,
Thailand 662 278 6777, United Kingdom 44 0 1635 523545
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