National Instruments 9477 User manual

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OPERATING INSTRUCTIONS AND SPECIFICATIONS
NI 9477
32-Channel, 0–60 V, Sinking Digital Output Module
ni.com/manuals
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NI 9477 Operating Instructions and Specifications 2 ni.com
This document describes how to use the National Instruments 9477
and includes specifications and pin assignments for the NI 9477.
Visit ni.com/info and enter rdsoftwareversion to determine
which software youneed for the modules youare using. For
information about installing, configuring, and programming the
system, refer to the system documentation. Visit ni.com/info
and enter cseriesdoc for information about C Series
documentation.
Note The safety guidelines and specifications in this
document are specific to the NI 9477. The other
components in the system might not meet the same safety
ratings and specifications. Refer to the documentation for
each component in the system to determine the safety
ratings and specifications for the entire system. Visit
ni.com/info and enter cseriesdoc for information
about C Series documentation.
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© National Instruments Corp. 3 NI 9477 Operating Instructions and Specifications
Safety Guidelines
Operate the NI 9477 only as described in these operating
instructions.
Hot Surface This icon denotes that the component may be
hot. Touching this component may result in bodily injury.
Safety Guidelines for Hazardous Locations
The NI 9477 is suitable for use in Class I, Division 2, Groups A, B,
C, D, T4 hazardous locations; Class I, Zone 2, AEx nC IIC T4, and
Ex nC IIC T4 hazardous locations; and nonhazardous locations
only. Follow these guidelines if youare installing the NI 9477 in a
potentially explosive environment. Not following these guidelines
may result in serious injury or death.
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.
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NI 9477 Operating Instructions and Specifications 4 ni.com
Caution Substitution of components may impair
suitability for Class I, Division 2.
Caution For Zone 2 applications, install the 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
pin. The device must prevent the external power supply
voltage from exceeding 80 V if there is a transient
overvoltage condition.
Special Conditions for Hazardous Locations Use in Europe
This equipment has been evaluated as Ex nC IIC T4 equipment
under DEMKO Certificate No. 03 ATEX 0324020X. Each module
is marked II 3G and is suitable for use in Zone 2 hazardous
locations, in ambient temperatures of –40 °C ≤Ta ≤70 °C. If you
are using the NI 9477 in Gas Group IIC hazardous locations, you
must use the device in an NI chassis that has been evaluated as
Ex nC IIC T4, EEx nC IIC T4, Ex nA IIC T4, or Ex nL IIC T4
equipment.
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© National Instruments Corp. 5 NI 9477 Operating Instructions and Specifications
Special Conditions for Marine Applications
Some modules are Lloyd’s Register (LR) Type Approved for
marine applications. To verify Lloyd’s Register certification,
visit ni.com/certification and search for the LR certificate,
or look for the Lloyd’s Register mark on the module.
Caution To meet radio frequency emission requirements
for marine applications, use shielded cables and install
the system in a metal enclosure. Suppression ferrites
must be installed on power supply inputs near power
entries to modules and controllers. Power supply and
module cables must be separated on opposite sides of the
enclosure and must enter and exit through opposing
enclosure walls.
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NI 9477 Operating Instructions and Specifications 6 ni.com
Connecting the NI 9477
The NI 9477 has a 37-pin DSUB connector that provides
connections for 32 digital output channels.
Figure 1. NI 9477 Pin Assignments
DO16
DO17
DO18
DO19
DO20
DO21
DO22
DO23
COM
COM
DO24
DO25
DO26
DO27
DO28
DO29
DO30
DO31
DO0
DO1
DO2
DO3
DO4
DO5
DO6
DO7
COM
COM
DO8
DO9
DO10
DO11
DO12
DO13
DO14
DO15
NC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
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© National Instruments Corp. 7 NI 9477 Operating Instructions and Specifications
Each channel of the NI 9477 has a DO pin to which youcan
connect a digital input device, and the module also has four COM
pins. The NI 9477 has current sinking outputs, meaning the DO pin
is driven to COM when the channel is turned on.
Yo ucan directly connect the NI 9477 to a variety of industrial
devices such as solenoids, motors, actuators, relays, and lamps.
Make sure the devices youconnect to the NI 9477 are compatible
with the output specifications of the module. Refer to the
Specifications section for more information about the output
specifications.
Note National Instruments recommends youuse cables
and connectors that are suitably rated for the 20 A module
output current limit. Refer to the Specifications section
for information about output current limits.
Connect the device to DO and the positive lead of the external
power supply, and connect the negative lead of the power supply to
the four COM pins, as shown in Figure 2.
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NI 9477 Operating Instructions and Specifications 8 ni.com
Figure 2. Connecting a Device to the NI 9477
Increasing Current Drive
Each channel has a continuous output current of 1 A. If youwant
to increase the output current to a device, youcan connect any
number of channels together in parallel. For example, if youwant
to drive 4 A of current, connect DO<0..3> in parallel as shown
in Figure 3. Youmust turn all parallel channels on and off
simultaneously so that the current on any single channel cannot
exceed the 1 A rating.
Device
+
–
NI 9477
COM
DO
External
Power
Supply
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© National Instruments Corp. 9 NI 9477 Operating Instructions and Specifications
Note Yo umust keep the module within the 20 A module
output current limit. Driving 1 A on more than 20 channels
would overload the module. Refer to the Specifications
section for information about output current limits.
Figure 3. Increasing the Current to a Device Connected to the NI 9477
NI 9477
DO3
DO1
DO0
DO2
4 A
+
_
COM
1 A
1 A
1 A
1 A
External
Power
Supply
Device
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NI 9477 Operating Instructions and Specifications 10 ni.com
Protecting the Module from Flyback Voltages
If the module is switching an inductive or energy-storing device
such as a solenoid, motor, or relay, and the device does not have
flyback protection, install an external flyback diode as shown in
Figure 4.
Figure 4. Connecting a Flyback Diode to the NI 9477
Inductive
Device
+
–
NI 9477
COM
DO External
Power
Supply
Flyback
Diode
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© National Instruments Corp. 11 NI 9477 Operating Instructions and Specifications
Sleep Mode
This module supports a low-power sleep mode. Support for sleep
mode at the system level depends on the chassis that the module is
plugged into. Refer to the chassis manual for information about
support for sleep mode. If the chassis supports sleep mode, refer to
the software help for information about enabling sleep mode. Visit
ni.com/info and enter cseriesdoc for information about
C Series documentation.
Typically, when a system is in sleep mode, youcannot
communicate with the modules. In sleep mode, the system
consumes minimal power and may dissipate less heat than it does
in normal mode. Refer to the Specifications section for more
information about power consumption and thermal dissipation.
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NI 9477 Operating Instructions and Specifications 12 ni.com
Specifications
The following specifications are typical for the range –40 to 70 °C
unless otherwise noted. All voltages are relative to COM unless
otherwise noted.
Output Characteristics
Number of channels.......................... 32 digital output channels
Output type ....................................... Sinking
Power-on output state ....................... Channels off
Output voltage (V0)........................... I0
· R0
External power supply
voltage range..................................... 0 –60 VDC
Continuous output current (I0)
Per channel ................................... 1 A max, on up to 20 channels
Module
(sum of all channels) .................. 20 A max
Output impedance (R0) ..................... 0.065 Ωmax
Reversed-voltage protection ............. None
Short-circuit protection ..................... None
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© National Instruments Corp. 13 NI 9477 Operating Instructions and Specifications
Maximum update rate ....................... 8 μs max
Propagation delay ............................. 1 μs max
MTBF ............................................... 717,920 hours at 25 °C;
Bellcore Issue 2, Method 1,
Case 3, Limited Part Stress
Method
Note Contact NI for Bellcore MTBF specifications
at other temperatures or for MIL-HDBK-217F
specifications.
Power Requirements
Power consumption from chassis
Active mode ............................... 650 mW max
Sleep mode ................................. 25 μW max
Thermal dissipation at 70 °C
Active mode ............................... 1.5 W max
Sleep mode ................................. 25 μW max
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NI 9477 Operating Instructions and Specifications 14 ni.com
Physical Characteristics
If youneed to clean the module, wipe it with a dry towel.
Note For two-dimensional drawings and
three-dimensional models of the C Series module and
connectors, visit ni.com/dimensionsand search by
module number.
Weight............................................... 145 g (5.1 oz)
Safety
Maximum Voltage1
Connect only voltages that are within the following limits:
Channel-to-COM .............................. 60 VDC, Measurement
Category I
Measurement Category I is for measurements performed on
circuits not directly connected to the electrical distribution system
referred to as MAINS voltage. MAINS is a hazardous live electrical
supply system that powers equipment. This category is for
1 The maximum voltage that can be applied or output between a channel and COM
without creating a safety hazard.
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© National Instruments Corp. 15 NI 9477 Operating Instructions and Specifications
measurements of voltages from specially protected secondary
circuits. Such voltage measurements include signal levels, special
equipment, limited-energy parts of equipment, circuits powered by
regulated low-voltage sources, and electronics.
Caution Do not connect the NI 9477 to signals or use
for measurements within Measurement Categories II,
III, or IV.
Isolation Voltages
Channel-to-channel........................... None
Channel-to-earth ground
Continuous ................................. 60 VDC, Measurement
Category I
Withstand.................................... 1,000 Vrms, verified by a 5 s
dielectric withstand test
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NI 9477 Operating Instructions and Specifications 16 ni.com
Hazardous Locations
U.S. (UL) .......................................... Class I, Division 2,
Groups A, B, C, D, T4;
Class I, Zone 2,
AEx nC IIC T4
Canada (C-UL) ................................. Class I, Division 2,
Groups A, B, C, D, T4;
Class I, Zone 2,
Ex nC IIC T4
Europe (DEMKO)............................. Ex nC IIC T4
Safety Standards
This product meets 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, CSA 61010-1
Note For UL and other safety certifications, refer to the
product label or the Online Product Certification section.
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© National Instruments Corp. 17 NI 9477 Operating Instructions and Specifications
Electromagnetic Compatibility
This product meets the requirements of the following EMC
standards for electrical equipment for measurement, control, and
laboratory use:
• EN 61326 (IEC 61326): Class A emissions; Industrial
immunity
• EN 55011 (CISPR 11): Group 1, Class A emissions
• AS/NZS CISPR 11: Group 1, Class A emissions
• FCC 47 CFR Part 15B: Class A emissions
• ICES-001: Class A emissions
Note For the standards applied to assess the EMC of this
product, refer to the Online Product Certification section.
Note For EMC compliance, operate this device with
shielded cables.
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NI 9477 Operating Instructions and Specifications 18 ni.com
CE Compliance
This product meets the essential requirements of applicable
European Directives as follows:
• 2006/95/EC; Low-Voltage Directive (safety)
• 2004/108/EC; Electromagnetic Compatibility Directive (EMC)
Online Product Certification
Refer to the product Declaration of Conformity (DoC) for
additional regulatory compliance information. To obtain product
certifications and the DoC for this product, visit ni.com/
certification, search by module number or product line, and
click the appropriate link in the Certification column.
Shock and Vibration
To meet these specifications, youmust panel mount the system.
Operating vibration
Random (IEC 60068-2-64)......... 5 grms, 10 to 500 Hz
Sinusoidal (IEC 60068-2-6) ....... 5 g, 10 to 500 Hz
Operating shock
(IEC 60068-2-27).............................. 30 g, 11 ms half sine,
50 g, 3 ms half sine,
18 shocks at 6 orientations
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© National Instruments Corp. 19 NI 9477 Operating Instructions and Specifications
Environmental
National Instruments C Series modules are intended for indoor use
only but may be used outdoors if installed in a suitable enclosure.
Refer to the manual for the chassis youare using for more
information about meeting these specifications.
Operating temperature
(IEC 60068-2-1, IEC 60068-2-2) ..... –40 to 70 °C
Storage temperature
(IEC 60068-2-1, IEC 60068-2-2) ..... –40 to 85 °C
Ingress protection.............................. IP 40
Operating humidity
(IEC 60068-2-56).............................. 10 to 90% RH,
noncondensing
Storage humidity
(IEC 60068-2-56).............................. 5 to 95% RH,
noncondensing
Maximum altitude............................. 2,000 m
Pollution Degree ............................... 2
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