® In s t r u c ti on M an u a l

0 1 2 - 0 9 4 5 9A

Relay

CI-6462

(3.230)

(1.830)

TO

INTERF

AC

E

ATION

CTIV

ATED

AL A

MANU

ACTIV

CI-6462

®

RELA

Y (SPDT)

30

Volt,

5 Amp Maxim

Activ ated um

Normal

Common

LED ON:

Included Equipment

Relay

Part Number

CI-6462

Required Equipment

Digital Adapter

PASPORT Interface

1

PS-2159

See PASCO catalog or www.pasco.com

1

Compatible PASPORT interfaces include the Xplorer (PS-2000), Powerlink (PS-2001), Xplorer GLX

(PS-2002), AirLink (PS-2005), and USB Link (PS-2100). See the PASCO catalog, visit www.pasco.com, or contact PASCO tech support for more information.

Introduction

This CI-6462 Relay is a single-pole double-throw switch designed for sense-and-control experiments using

DataStudio software or a standalone Xplorer GLX. It can automatically switch equipment on and off in any AC or DC circuit carrying as much as 5 A with a maximum voltage of 30 V. Make connections to the Relay’s Acti-

vated, Normal, and Common jacks using 4 mm banana plugs.

Schematically the Relay looks like this:

Activated Common Normal

By default, the Normal position is closed. When the Relay is activated, the Activated position is closed. The

Relay can be activated in two ways: automatically with a signal from a PASPORT interface, or manually by pressing the pressing the red Manual Activation button on the Relay. (The Relay must be connected to a pow-

800-772-8700 www.pasco.com

2

R e l a y ered PASPORT interface for manual activation.) Whenever it is activated, the green

LED on the Relay turns on.

D a t a S t u d i o S e t u p

DataStudio Setup

Note: Follow these steps if you are using any PASPORT interface connected to a computer. Go to

page 3 for instructions on setting up an Xplorer GLX without a computer.

1.

Connect the Relay’s ¼ inch phone plug to Channel 1 of a Digital Adapter.

2.

Connect the Digital Adapter to the PASPORT interface.

3.

Connect the interface to your computer.

4.

Connect at least one sensor (such as a temperature sensor) to the same or a separate PASPORT interface. This sensor will provide the input used to control the

Relay.

Tip: The above steps can be performed in any order. For instructions on connecting your interface, refer to the documentation that came with it.

5.

Start DataStudio (if it does not start automatically).

Note: If you see the “Welcome to DataStudio” window, select Create Experiment.

6.

DataStudio automatically detects a device connected to the Digital Adapter and opens the “timers” list. Select Relay Control.

Next, you will define the behavior of the Relay in DataStudio’s Calculator window.

Follow steps 7–13 for one simple example of how to do this. This example assumes

that you have connected a temperature sensor, but another sensor can be substituted.

Select Relay Control

7.

Click the Calculate button to open the Calculator window.

8.

In the definition field, type the following (overwriting the default “y = x” definition):

Relay State = outputstate(1, 1, T >30)

9.

Click the Accept button.

Click to open Calculator

10. Drag Temperature (°C) from the Data List and drop it onto Please define the variable “T” in the Calculator.

11. Click the Start button to start data collection.

Drag Temperature to the Calculator

12. Hold the temperature sensor in your hand. When the measured temperature increases above 30 °C, the Relay activates: the LED on the Relay lights, and you may hear the Relay click. Allow the temperature sensor to cool; at less than

30 °C, the Relay deactivates.

Note: The LED on the Digital Adapter is always in the opposite state to the LED on the Relay. The adapter’s LED is off when the Relay is activated.

13. Click the Stop button to stop data collection.

Note: Go to page 4 for more information on the output-control functions used in DataStudio.

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M o d e l N o . C I - 6 4 6 2 X p l o r e r G L X S e t u p ( S ta n d a l o n e M o d e )

Xplorer GLX Setup (Standalone Mode)

Note: Follow these steps if you are using a GLX without a computer.

1.

Connect the Relay’s ¼ inch phone plug to Channel 1 of a Digital Adapter.

2.

Connect the Digital Adapter to Port 1 of the Xplorer GLX.

3.

Connect at least on sensor (such as a temperature sensor) to the GLX. This sensor will provide the input used to control the Relay.

4.

Turn on the GLX.

Tip: The above steps can be performed in any order.

5.

The GLX automatically detects a device connected to the Digital Adapter and opens the “timers” list. Select Relay Control. (Relay Control is the last selection on the list; press the up arrow to jump directly to it.)

Next, you will define the behavior of the Relay in the GLX Calculator screen. Follow

the steps 6–13 for one simple example of how to do this. This example assumes that

you have connected a temperature sensor, but another sensor can be substituted.

6.

Press + F3 to open the Calculator screen.

7.

Press F1 three times to open the third Functions menu. Select out outstate from that menu.

8.

Press F2 to open the [Data] menu. Select Temperature with units of (°C).

9.

Press F1 three times to open the third Functions menu again. Select > (the greater than sign).

10. Type 30; then press .

The definition in the Calculator screen should now look like this:

outputstate(1,1,[Temperature (°C)]>30)

11. Press to start data collection.

12. Hold the temperature sensor in your hand. When the measured temperature increases above 30 °C, the Relay activates: the LED on the Relay lights, and you may hear the Relay click. Allow the temperature sensor to cool; at less than

30 °C, the Relay deactivates.

Note: The LED on the Digital Adapter is always in the opposite state to the LED on the Relay. The adapter’s LED is off when the Relay is activated.

13. Press to stop data collection.

Select Relay Control from the GLX timers list

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3

4

R e l a y O u t p u t - c o n tr o l F u n c t i o n s

Output-control Functions

Note: The examples in the remainder of this Instruction Manual are presented as they would appear in DataStudio, though most of them are applicable to the GLX used in standalone mode.

For more information on defining calculations on the GLX, see the GLX Users’ Guide.

outputstate(Adapter, AdapterChannel, state)

Let’s take a closer look the definition that you typed into the calculator for the exam-

ple on page 2 or 3:

Adapter

AdapterChannel

State

Relay State = outputstate(1, 1, T>30)

name outputstate function

The text to the left of the equal sign is the name of the calculation; you can type anything you want there. The important part of the calculation, on the right side, is the

outputstate function and its three arguments enclosed in parentheses and separated by commas.

The first argument, Adapter, identifies the digital adapter to be controlled. In DataStudio, the first adapter that you connect is number 1, the second is number 2, etc.; if you have only one adapter, it is always number 1 regardless of where it is plugged in. On the GLX in standalone mode, the number of the adapter is the number of the port that it is plugged into (1, 2, 3, or 4).

The second argument, AdapterChannel, identifies the channel of the digital adapter that the Relay is plugged into. In the example above, it is equal to 1. If you had plugged the Relay into channel 2 of the adapter, you would set the argument equal to

2.

Tip: You can use two relays connected to the same digital adapter, and more if you have multiple adapters. For each relay, create one calculation that includes the outputstate function and uniquely addresses it using the Adapter and AdapterChannel arguments.

The third argument, state, is what actually controls the Relay. When state

= 0, the

Relay is “normal”. When state

≠ 0 (i.e. when the argument equals anything other than zero), the Relay is activated. To say it another way: the Relay is activated only when

state is true.

The state argument is usually a logical expression made up of one or more of the operators and functions described below.

Logic Operators and Functions

A logic function has two possible values: 0 and 1. A logic operator ( < or >) is used to build an expression that can have a value of 0 or 1.

Less Than and Greater Than If an expression such as a < b is true, then it equals 1. If the expression is false, then it equals 0.

inrange(min, max, x) This function has three arguments: the first two, min and

max, define the upper and lower limit of a range, and the third, x, is an input value to

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M o d e l N o . C I - 6 4 6 2 be compared with that range. If min ≤ x ≤max, then the function equals 1. If x < min or x > max, then the function equals 0.

and(a, b) This function equals 0 if either of the arguments equals 0; otherwise the function equals 1.

or(a, b) This function equals 0 if both of the arguments equal 0; otherwise the function equals 1.

not(x) This function equals 1 if the argument equals 0; otherwise the function equals 1.

Ex a m p l e s

Examples

The input that controls the relay can be any measurement or combination of multiple measurements from any sensor. Below are some examples.

Temperature Control

Temperature control may be desirable on a variety of apparatus such as an incubator

(made with a low-power light bulb and a box), a small greenhouse equipped with a cooling fan, or a thermal cavity (such as PASCO part TD-8580A).

You can control the temperature by having the Relay turn on a fan when the apparatus

is too hot, or by turning on a heater when it is too cold. The example from page 2 or 3,

outputstate(1, 1, T>30) could be used for either purpose, depending on whether there were a fan circuit connected to the Normal jack or a heater circuit connected to the Activated jack.

You can also use the Relay to control a bell or light to indicate when the temperature is within an acceptable range (or not) with a definition such as:

outputstate(1, 1, inrange(20, 30, T))

This would activate the Relay when the temperature is between 20 °C and 30 °C.

Fan Cart on Inclined Track

In this example, a fan cart starts pushing itself up an inclined track whenever it gets close to the bottom.

Setup a fan-equipped cart on an inclined track with a motion sensor (part PS-2103) at the lower end. Connect the Relay so that the fan turns on when the Relay is activated.*

Enter this equation in the Calculator:

outputstate(1, 1, and(x>0.25, V <0))

Define x as position and V as velocity.

Start data collection and release the cart about 25 cm from the motion sensor (oriented so that the fan will push the cart up the incline). The fan is on when the cart is closer than 25 cm and rolling toward the sensor; otherwise it is off.

Change the incline of the track, or change the distance at which the fan turns on and observe the results.

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*The PASCO Fan Accessory (part ME-9491) can be controlled by the

Relay via the cable pictured below, which you can make with commonly available parts.

to fan accessory

3.5 mm ( 1 /

8

inch) mono phone plug to Relay

4 mm banana plugs

5

6

R e l a y

Capacitor Charge and Discharge

Note: If you are using the Xplorer GLX for this example, you must use it connected to a computer with DataStudio.

Create the circuit pictured (right). Use a battery such as a “AA” cell and a capacitor such as PASCO part SE-8626.

Enter this equation in the Calculator:

outputstate(1,1, or(and(V<1, derivative(2,V)>0), V <0.5))

Define V as the voltage measured by the voltage sensor.

Start data collection. The capacitor will start charging. When V reaches 1 volt, it will start discharging. When V has decreased to 0.5 volt, it will start charging again and repeat the cycle.

Specifications

Maximum Voltage

Maximum Current

Cord Length

Dimensions

30 V

5 A

1.7 m

10 cm x 7 cm x 3 cm

Sp e c i f i c a ti o n s

Relay

10 W

1 F

1.5 V +

-

V voltage sensor

Technical Support

For assistance with any PASCO product, contact PASCO at:

Address: PASCO scientific

10101 Foothills Blvd.

Roseville, CA 95747-7100

Phone: 916-786-3800 (worldwide)

800-772-8700 (U.S.)

Fax:

Web:

(916) 786-3292 www.pasco.com

Email: [email protected]

Limited Warranty

For a description of the product warranty, see the PASCO catalog.

Copyright

The PASCO scientific 012-09459A Relay Instruction Manual is copyrighted with all rights reserved. Permission is granted to non-profit educational institutions for reproduction of any part of this manual, providing the reproductions are used only in their laboratories and classrooms, and are not sold for profit. Reproduction under any other circumstances, without the written consent of PASCO scientific, is prohibited.

Trademarks

PASCO, PASCO scientific, DataStudio, PASPORT, Xplorer, and Xplorer GLX are trademarks or registered trademarks of PASCO scientific, in the United States and/or in other countries. All other brands, products, or service names are or may be trademarks or service marks of, and are used to identify, products or services of, their respective owners. For more information visit www.pasco.com/legal.

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