National Instruments NI 9482 User manual

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USER MANUAL AND SPECIFICATIONS
NI 9482
4-Channel SPST Electromechanical Relay Module
ni.com/manuals
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2|ni.com |NI 9482
This document describes how to use the National Instruments 9482
and includes specifications and pin assignments for the NI 9482.
Note The safety guidelines and specifications in this
document are specific to the NI 9482. 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.
Related Information
Services
ni.com/services
NI CompactDAQ &
NI CompactRIO Documentation
ni.com/info cseriesdoc
ni.com/info softwareversion
Chassis Compatibility
ni.com/info compatibility
Software Support
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NI 9482 |© National Instruments |3
Safety Guidelines
Operate the NI 9482 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.
Warning This icon denotes a warning advising you to
take precautions to avoid electrical shock.
Caution Do not operate the NI 9482 in a manner not
specified in this user manual. Product misuse can result
in a hazard. You can compromise the safety protection
built into the product if the product is damaged in any
way. If the product is damaged, return it to National
Instruments for repair.
Safety Guidelines for Hazardous Voltages
If hazardous voltages are connected to the module, take the
following precautions. A hazardous voltage is a voltage greater
than 42.4 Vpk or 60 VDC to earth ground.
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4|ni.com |NI 9482
Caution Ensure that hazardous voltage wiring is
performed only by qualified personnel adhering to local
electrical standards.
Caution Do not mix hazardous voltage circuits and
human-accessible circuits on the same module.
Caution Make sure that devices and circuits connected
to the module are properly insulated from human contact.
Caution When module terminals are hazardous voltage
LIVE (>42.4Vpk/60 VDC), you must ensure that devices
and circuits connected to the module are properly
insulated from human contact. You must use the NI 9927
connector backshell kit to ensure that the terminals are
not accessible.
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NI 9482 |© National Instruments |5
Figure 1. NI 9927
Electromagnetic Compatibility Guidelines
This product was tested and complies with the regulatory
requirements and limits for electromagnetic compatibility (EMC)
as stated in the product specifications. These requirements and
limits are designed to provide reasonable protection against
harmful interference when the product is operated in its intended
operational electromagnetic environment.
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6|ni.com |NI 9482
This product is intended for use in industrial locations. There is no
guarantee that harmful interference will not occur in a particular
installation, when the product is connected to a test object, or if the
product is used in residential areas. To minimize the potential for
the product to cause interference to radio and television reception
or to experience unacceptable performance degradation, install and
use this product in strict accordance with the instructions in the
product documentation.
Furthermore, any changes or modifications to the product not
expressly approved by National Instruments could void your
authority to operate it under your local regulatory rules.
Caution To ensure the specified EMC performance,
operate this product only with shielded cables and
accessories.
Caution The I/O port pins of this product can be
damaged if subjected to Electrostatic Discharge (ESD). To
prevent damage, industry-standard ESD prevention
measures must be employed during installation,
maintenance, and operation.
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NI 9482 |© National Instruments |7
Caution The I/O port of this product is rated for
Measurement Category II; however, it is neither designed
nor tested for compliance with the transient immunity
requirements for Electrical Fast Transients or lightning
Surge, which are normally applied to ports intended for
connection to the electrical distribution system. For
applications where connection to the electrical distribution
system is desired, ensure that the I/O port is provided with
appropriate transient protection.
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8|ni.com |NI 9482
Connecting the NI 9482
The NI 9482 provides connections for four electromechanical
relay channels.
Figure 2. NI 9482 Pinout
03
0
1
2
3
4
5
6
7
8
9
CH0a
CH0b
CH1a
CH1b
CH2a
CH2b
CH3a
CH3b
NC
NC
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NI 9482 |© National Instruments |9
Connector
The NI 9482 has a 10-terminal, detachable screw-terminal
connector.
Signals
Each channel has two interchangeable pins, CHa and CHb, to
which you can connect a load.
Note You must use 2-wire ferrules to create a secure
connection when connecting more than one wire to a
single terminal on the NI 9482.
LEDs
Each channel has an LED that indicates the state of the channel.
A channel LED is lit when the channel is on and dark when the
channel is off. The LEDs are disabled when the chassis is in sleep
mode.
Related Information
Sleep Mode on page 12
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10 |ni.com |NI 9482
Connecting a Load
You can connect loads to the NI 9482. Connect the positive lead of
the load to CHa or CHb, the ground of the load to the power supply,
and the remaining CHa or CHb to the other lead of the power
supply.
Figure 3. Connecting a Load
When the channel is turned on, the terminal connected to the load
drives current or applies voltage to the load. When the channel is
off, the terminal does not drive current or apply voltage to the load.
NI 9482
+
–
CHa
CHbAC
or
Load
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NI 9482 |© National Instruments |11
Wiring for High-Vibration Applications
If an application using the NI 9482 is subject to high vibration,
National Instruments recommends that you either use ferrules to
terminate wires to the detachable screw-terminal connector or use
the NI 9927 backshell kit to protect the connections.
Figure 4. Wiring a Screw-Terminal Connector with a Ferrule
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12 |ni.com |NI 9482
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.
Typically, when a system is in sleep mode, you cannot
communicate with the modules. In sleep mode, the system
consumes minimal power and may dissipate less heat than it does
in normal mode.
Related Information
Power Requirements on page 14
Specifications
The following specifications are typical for the range -40 °C to 70 °C
unless otherwise noted.
Caution Using the NI 9482 in a manner not described in
this document may impair the protection the NI 9482
provides.
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NI 9482 |© National Instruments |13
Output Characteristics
Number of channels.......................... 4 electromechanical relay
channels
Relay type ......................................... Single pole single throw
(SPST)
Power-on output state ....................... Channels off
Switching capacity (resistive load)
Switching voltage ....................... 60 VDC max, 250 Vrms max
Switching current, per channel
One channel on .................... 2.5 A max at 30 VDC,
1 A max at 60 VDC,
2.5 A max at 250 Vrms
Two channels on .................. 2 A max at 30 VDC,
1 A max at 60 VDC,
2 A max at 250 Vrms
All channels on .................... 1.5 A max at 30 VDC,
1 A max at 60 VDC,
1.5 A max at 250 Vrms
Resistance per channel,
channel on ......................................... 0.2 Ω
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14 |ni.com |NI 9482
Switching rate ................................... 1 operation per second
Relay release time............................. 10 ms max
Relay operate time ............................ 15 ms max
Relay bounce time ............................ 3 ms
Off state leakage ............................... 10 μAmax
Life expectancy
Mechanical (no load).................. 20,000,000 operations
Electrical (connecting to load) ... 100,000 operations
MTBF ............................................... Contact NI for Bellcore
MTBF or MIL-HDBK-217F
specifications
Power Requirements
Power consumption from chassis
Active mode ............................... 580 mW max
Sleep mode ................................. 10 mW max
Thermal dissipation (at 70 °C)
Active mode ............................... 1.5 W max
Sleep mode ................................. 10 mW max
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NI 9482 |© National Instruments |15
Physical Characteristics
If you need to clean the module, wipe it with a dry towel.
Tip For two-dimensional drawings and
three-dimensional models of the C Series module and
connector, visit ni.com/dimensionsand search by the
module number.
Screw-terminal wiring ...................... 0.511 mm diameter
(24 AWG) to 2.053 mm
diameter (12 AWG) copper
conductor wire with 10 mm
(0.39 in.) of insulation
stripped from the end
Torque for screw terminals ............... 0.5 N · m to 0.6 N · m
(4.4 lb · in. to 5.3 lb · in.)
Ferrules ............................................. 0.25 mm2to 2.5 mm2
Weight............................................... 150 g (5.3 oz)
Safety Voltages
Connect only voltages that are within the following limits.
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16 |ni.com |NI 9482
CHa-to-CHb...................................... 250 Vrms max,
Measurement Category II
Isolation
Channel-to-channel
Continuous ........................... 250 Vrms
Withstand ............................. 1,400 Vrms, verified by a 5 s
dielectric withstand test
Channel-to-earth ground
Continuous ........................... 250 Vrms
Withstand ............................. 2,300 Vrms, verified by a 5 s
dielectric withstand test
Measurement Category II is for measurements performed on
circuits directly connected to the electrical distribution system.
This category refers to local-level electrical distribution, such as
that provided by a standard wall outlet, for example, 115 V for U.S.
or 230 V for Europe.
Caution Do not connect the NI 9482 to signals or use
for measurements within Measurement Categories III
or IV.
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NI 9482 |© National Instruments |17
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.
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; Basic 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
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18 |ni.com |NI 9482
Note In the United States (per FCC 47 CFR), Class A
equipment is intended for use in commercial,
light-industrial, and heavy-industrial locations. In
Europe, Canada, Australia and New Zealand (per
CISPR 11) Class A equipment is intended for use only in
heavy-industrial locations.
Note Group 1 equipment (per CISPR 11) is any
industrial, scientific, or medical equipment that does not
intentionally generates radio frequency energy for the
treatment of material or inspection/analysis purposes.
Note For EMC declarations and certifications, refer to
the Online Product Certification section.
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)
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NI 9482 |© National Instruments |19
Online Product Certification
To obtain product certifications and the Declaration of Conformity
(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, you must panel mount the system.
Operating vibration,
sinusoidal (IEC 60068-2-6) .............. 5 g, 40 Hz to 500 Hz;
0.062 in. double amplitude,
10 Hz to 40 Hz
Note The shock and vibration rating for the NI 9482 is
limited, in comparison to other NI CompactDAQ and
CompactRIO devices, due to the mechanical relays on the
module.
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