NI SCC-RLY01 Bedienungsanleitung
USER GUIDE
SCC-RLY01 Relay Module
The SCC-RLY01 contains one single-pole double-throw (SPDT)
nonlatching relay capable of switching 5 A at 30 VDC when using an
SC-2345 or SC-2350, or 250 VAC when using an SCC-68. Any single
E/M Series DAQ device digital input/output (P0) line 0 to 7 can control the
SCC-RLY01.
The SCC-RLY01 uses positive logic. A digital high sets the relay, and
a digital low resets it. In the set state, the common (COM) contact is
connected to the normally open (NO) contact. In the reset state, the
common (COM) contact is connected to the normally closed (NC) contact.
Conventions
The following conventions are used in this guide:
<> Angle brackets that contain numbers separated by an ellipsis represent
a range of values associated with a bit or signal name—for example,
P0 <3..0>.
»The »symbol leads you through nested menu items and dialog box options
to a final action. The sequence File»Page Setup»Options directs you to
pull down the File menu, select the Page Setup item, and select Options
from the last dialog box.
This icon denotes a note, which alerts you to important information.
This icon denotes a caution, which advises you of precautions to take to
avoid injury, data loss, or a system crash. When this symbol is marked on
the product, refer to the Read Me First: Safety and Radio-Frequency
Interference document, shipped with the product, for precautions to take.
When symbol is marked on a product, it denotes a warning advising you to
take precautions to avoid electrical shock.
When symbol is marked on a product, it denotes a component that may be
hot. Touching this component may result in bodily injury.
SCC-RLY01 Relay Module User Guide 2 ni.com
bold Bold text denotes items that you must select or click in the software, such
as menu items and dialog box options. Bold text also denotes parameter
names.
italic Italic text denotes variables, emphasis, a cross-reference, or an introduction
to a key concept. Italic text also denotes text that is a placeholder for a word
or value that you must supply.
monospace Text in this font denotes text or characters that you should enter from the
keyboard, sections of code, programming examples, and syntax examples.
This font is also used for the proper names of disk drives, paths, directories,
programs, subprograms, subroutines, device names, functions, operations,
variables, filenames, and extensions.
SC-2345 SC-2345 refers to both the SC-2345 connector block and SC-2345 with
configurable connectors.
SCC SCC refers to any SCC Series signal-conditioning module.
What You Need to Get Started
To set up and use the SCC-RLY01, you need the following items:
❑Hardware
– SCC-68 orSC-2345 with one of the following:
• SCC-PWR01
• SCC-PWR02 and the PS01 power supply
• SCC-PWR03 (requires a 7 to 42 VDC power supply, not
included)
– One or more SCC-RLY01 modules
– 68-pin E/M Series DAQ device
– 68-pin cable
– Quick Reference Label
❑Software
– The latest version of NI-DAQmx
❑Documentation
–SCC-RLY01 Relay Module User Guide
–SC-2345/2350 User Manual or SCC-68 User Guide
–SCC Quick Start Guide
–Read Me First: Safety and Radio-Frequency Interference
©National Instruments Corporation 3 SCC-RLY01 Relay Module User Guide
– Documentation for your hardware
– Documentation for your software
❑Tools
– 1/8 in. flathead screwdriver
– Numbers 1 and 2 Phillips screwdrivers
– Wire insulation stripper
You can download NI documents from ni.com/manuals. To download
the latest version of NI-DAQ, click Download Software at ni.com.
Note Configuring the SCC system using Measurement & Automation Explorer (MAX) is
not supported on the Macintosh operating system.
Device Specific Information
Note For general SCC module installation and signal connection information, and
information about the SCC-68 or SC-2345 carrier, refer to the SCC Quick Start Guide,
available for download at ni.com/manuals.
Installing the Module
Caution Refer to the Read Me First: Safety and Radio-Frequency Interference document
before removing equipment covers or connecting/disconnecting any signal wires.
Plug the SCC-RLY01 into any DIO socket J(X+9), where Xis 0 to 7, on the
SC-2345 or into any of the four slots that correspond to P0.0 to P0.3, on the
SCC-68.
Connecting the Input Signals
Note The signal names have changed. Refer to ni.com/info and enter rdtntg
to confirm the signal names.
Each screw terminal is labeled by pin number <1..3>. Pin 1 is the
NC terminal, pin 2 is the COM terminal, and pin 3 is the NO terminal.
The SCC-RLY01 contains one SPDT relay controlled by the digital line of
an E/M Series DAQ device P0. line X. The value of Xis determined by the
number of the DIO socket, J(X+9) on the SC-2345 or SCC Mod (X+ 1) on
the SCC-68, where you plug in the SCC-RLY01. Figure 1 shows a circuit
diagram of the SCC-RLY01.
SCC-RLY01 Relay Module User Guide 4 ni.com
Figure 1. SCC-RLY01 Circuit Diagram
Caution When connecting signals >60 VDC to the SCC-RLY01 module in the SCC-68,
you must use the high-voltage backshell. Figure 2 shows the high-voltage backshell.
Figure 2. High-Voltage Backshell
For information about how to configure the SCC-RLY01 module with
NI-DAQmx, refer to the SCC Quick Start Guide.
Specifications
These ratings are typical at 25 °C unless otherwise stated.
Electrical
Contact type............................................SPDT (Form C), nonlatching
Nominal switching capacity
SCC-68 ............................................5 A at 250 VAC
5 A at 30 VDC
SC-2345...........................................5 A at 30 VAC
5 A at 30 VDC
SCC-RLY01
E/M Series
NO
NC
COM
+5 V
P0.(X
)
D GND
1
2
3
390 Ω, 1/4 W
©National Instruments Corporation 5 SCC-RLY01 Relay Module User Guide
Caution The SCC-RLY01 module is derated to 30 V maximum switching voltage in the
SC-2345 carrier regardless of any other voltage markings found on the SCC-RLY01
module case.
Signal bandwidth.................................... DC to 400 Hz
Contact resistance .................................. 30 mΩmax
Switching time
Operate time (NC to NO)................ 5 ms (10 ms max)
Release time (NO to NC)................ 4 ms (5 ms max)1
Maximum operating speed..................... 30 cps at rated load
Contact lifetime...................................... 5 ×107operations at 180 cpm
(minimum)
Power Requirement
Digital power.......................................... 300 mW max
+5 V........................................................ 60 mA max
Physical
Figure 3. SCC-RLY01 Dimensions
Weight.................................................... 37 g (1.3 oz)
1 Excluding contact bounce time
1.87 cm
(0.74 in.) 7.93 cm
(3.12 in.)
3.55 cm
(1.4 in.)
SCC-RLY01 Relay Module User Guide 6 ni.com
I/O connectors.........................................One 20-pin right-angle
male connector
One 3-pin screw-terminal block
Field-wiring diameter .............................28 to 16 AWG
Maximum Working Voltage
Maximum working voltage refers to the signal voltage plus the
common-mode voltage.
When used with an SCC-2345
Channel-to-earth (inputs).................±60 VDC, Measurement
Category I
Caution Do not use for connection to signals in Measurement Category II, III, or IV. Do
not connect to MAINS.
When used with an SCC-68
Channel-to-earth (inputs).................±300 VDC, Measurement
Category II1
Caution Do not use for connection to signals in Measurement Category III, or IV.
Isolation Voltage
Channel-to-channel, channel-to-earth isolation
Continuous.......................................60 VDC,
Measurement Category I
Withstand.........................................2300 Vrms verified by a 5 s
dielectric withstand test
Environmental
Operating temperature ............................0 to 50 °C
Storage temperature ................................–20 to 65 °C
Humidity.................................................10 to 90% RH, noncondensing
1 For voltages >60 VDC, you must use the high-voltage backshell.
©National Instruments Corporation 7 SCC-RLY01 Relay Module User Guide
Maximum altitude .................................. 2,000 m
Pollution Degree (indoor use only) ........ 2
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; Minimum Immunity
• EN 55011 Emissions; Group 1, Class A
• CE, C-Tick, ICES, and FCC Part 15 Emissions; Class A
Note For EMC compliance, operate this device according to product documentation.
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.
SCC-RLY01 Relay Module User Guide 8 ni.com
SCC-RLY01 Module Pin Assignments
Figure 4 shows the I/O connector pins on the bottom of the module.
Figure 4. SCC Module Bottom View
Table 1 lists the signal connection corresponding to each pin. GND is the
reference for the +5 V supply.
1Pin1 2Pin2 3PWBKey 4Pin19 5 Pin 20
Table 1. SCC-RLY01 Pin Signal Connections
Pin Number Signal
1 —
2—
3 —
4 —
5 —
6 —
7P0.(X)
8 —
9+5 V
10 GND
11 —
12 —
5
4
2
1
3
National Instruments, NI, ni.com, and LabVIEW are trademarks of National Instruments Corporation.
Refer to the Terms of Use section on ni.com/legal for more information about National
Instruments trademarks. Other product and company names mentioned herein are trademarks or trade
names of their respective companies. For patents covering National Instruments products, refer to the
appropriate location: Help»Patents in your software, the patents.txt file on your CD, or
ni.com/patents.
© 2001–2006 National Instruments Corporation. All rights reserved. 371079C-01 May06
13 —
14 —
15 —
16 —
17 —
18 —
19 —
20 —
Table 1. SCC-RLY01 Pin Signal Connections (Continued)
Pin Number Signal
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