National Instruments Relay Module SCC-RLY01 Manuale utente

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 or 250 VAC.

Any single E 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. This font 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:

❑SC-2345/2350 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

❑SC-2345/2350 User Manual, available at ni.com

❑SCC-RLY01 Relay Module User Guide

❑SCC Quick Start Guide, available at ni.com

❑Read Me First: Safety and Radio-Frequency Interference

❑SC-2345 Quick Reference Label

❑68-pin E Series DAQ device, documentation, and 68-pin cable

❑1/8 in. flathead screwdriver

❑Numbers 1 and 2 Phillips screwdrivers

©National Instruments Corporation 3 SCC-RLY01 Relay Module User Guide

❑Wire insulation strippers

❑NI-DAQ (current version) for Windows 2000/NT/XP

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 SC-2350 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 P0. socket J(X+9), where Xis 0 to 7, on the

SC-2345.

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 an E Series DAQ

device P0. line X. The value of Xis determined by the number of the P0.

socket, J(X+9), where you plug in the SCC-RLY01. The following figure is

a circuit diagram of the SCC-RLY01.

SCC-RLY01 Relay Module User Guide 4 ni.com

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 ...................5 A at 250 VAC

5 A at 30 VDC

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)

1 Excluding contact bounce time

SCC-RLY01

E Series

COM

+5 V

PO (

)

D GND

390 Ω, 1/4 W

©National Instruments Corporation 5 SCC-RLY01 Relay Module User Guide

Power Requirement

Digital power.......................................... 300 mW max

+5 V........................................................ 60 mA max

Physical

Dimensions............................................. 8.89 cm × 2.92 cm ×1.85 cm

(3.50 in. ×1.15 in. ×0.73 in.)

Mass ....................................................... 37 g (1.3 oz)

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.

Channel to earth (inputs)........................ ±300 V, Installation Category II1

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

Safety

The SCC-RLY01 meets the requirements of the following standards

for safety of electrical equipment for measurement, control, and

laboratory use:

• IEC 61010-1, EN 61010-1

• UL 3111-1, UL 61010B-1

• CAN/CSA C22.2 No. 1010.1

1 Isolation test voltage is 2,400 VAC at 2 s.

SCC-RLY01 Relay Module User Guide 6 ni.com

Note For UL and other safety certifications, refer to the product label, or visit

ni.com/hardref.nsf, search by model number or product line, and click the

appropriate link in the Certification column.

Electromagnetic Compatibility

Emissions................................................EN 55011 Class A at 10 m

FCC Part 15A above 1 GHz

Immunity ................................................EN 61326:1997 + A2:2001,

Table 1

CE, C-Tick, and FCC Part 15 (Class A) Compliant

Note For full EMC compliance, operate this device with shielded cabling.

CE Compliance

This product meets the essential requirements of applicable European

Directives, as amended for CE marking, as follows:

Low-Voltage Directive (safety)..............73/23/EEC

Electromagnetic Compatibility

Directive (EMC) .....................................89/336/EEC

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/hardref.nsf, search by model number or product line, and click the

appropriate link in the Certification column.

©National Instruments Corporation 7 SCC-RLY01 Relay Module User Guide

SCC-RLY01 Module Pin Assignments

Figure 1 shows the I/O connector pins on the bottom of the module.

Figure 1. 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 —

National Instruments™, NI™, ni.com™, and NI-DAQ™ are trademarks of National Instruments

Corporation. 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.

371079B-01 Mar04

*371079B-01*

13 —

14 —

15 —

16 —

17 —

18 —

19 —

20 —

Table 1. SCC-RLY01 Pin Signal Connections (Continued)

Pin Number Signal

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