National Instruments 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.

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 or SC-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

SCC-RLY01 Relay Module User Guide 2 ni.com

– 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
the latest version of NI-DAQ, click Download Software at

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

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

ni.com/manuals.

ni.com/manuals. To download

ni.com.

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 3 SCC-RLY01 Relay Module User Guide