National Instruments Switch SCC RLY01 User Manual

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.  
 
 
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 X is 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 X is 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.  
© National Instruments Corporation  
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SCC-RLY01 Relay Module User Guide  
 
E/M Series  
SCC-RLY01  
NO  
+5 V  
3
2
1
390 Ω, 1/4 W  
P0.(X )  
COM  
NC  
D GND  
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 Relay Module User Guide  
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ni.com  
 
   
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 mΩ max  
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 × 107 operations at 180 cpm  
(minimum)  
Power Requirement  
Digital power.......................................... 300 mW max  
+5 V........................................................ 60 mA max  
Physical  
1.87 cm  
(0.74 in.)  
7.93 cm  
(3.12 in.)  
3.55 cm  
(1.4 in.)  
Figure 3. SCC-RLY01 Dimensions  
Weight.................................................... 37 g (1.3 oz)  
1
Excluding contact bounce time  
© National Instruments Corporation  
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SCC-RLY01 Relay Module User Guide  
 
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 type test  
Environmental  
Operating temperature ............................0 to 50 °C  
Storage temperature................................–20 to 65 °C  
Humidity.................................................10 to 90% RH, noncondensing  
Maximum altitude...................................2,000 m  
Pollution Degree (indoor use only) ........2  
1
For voltages >60 VDC, you must use the high-voltage backshell.  
SCC-RLY01 Relay Module User Guide  
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ni.com  
 
Safety  
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  
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 product according to the documentation.  
Note For EMC compliance, operate this device with shielded cables.  
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 model  
number or product line, and click the appropriate link in the Certification  
column.  
© National Instruments Corporation  
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SCC-RLY01 Relay Module User Guide  
 
 
Environmental Management  
NI is committed to designing and manufacturing products in an  
environmentally responsible manner. NI recognizes that eliminating  
certain hazardous substances from our products is beneficial to the  
environment and to NI customers.  
For additional environmental information, refer to the NI and the  
Environment Web page at ni.com/environment. This page contains the  
environmental regulations and directives with which NI complies, as well  
as other environmental information not included in this document.  
Waste Electrical and Electronic Equipment (WEEE)  
EU Customers At the end of the 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.  
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(For information about China RoHS compliance, go to  
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SCC-RLY01 Module Pin Assignments  
Figure 4 shows the I/O connector pins on the bottom of the module.  
4
1
2
3
5
1 Pin 1  
2
Pin 2  
3
PWB Key  
4
Pin 19  
5
Pin 20  
Figure 4. SCC Module Bottom View  
SCC-RLY01 Relay Module User Guide  
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ni.com  
 
 
Table 1 lists the signal connection corresponding to each pin. GND is the  
reference for the +5 V supply.  
Table 1. SCC-RLY01 Pin Signal Connections  
Pin Number  
Signal  
1
2
3
4
5
6
7
P0.(X)  
8
9
+5 V  
GND  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
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/technology,  
refer to the appropriate location: Help»Patents in your software, the patents.txt file on your  
media, or the National Instruments Patent Notice at ni.com/patents.  
© 2001–2008 National Instruments Corporation. All rights reserved.  
371079D-01  
Aug08  
 
 

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