Grove - SPDT Relay(30A) Datasheet by Seeed Technology Co., Ltd

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Grove - SPDT Relay(30A)

The SPDT Relay(30A) is a high quality Single Pole Double Throw Relay(SPDT).The

Relay consists of a coil, 1 common terminal, 1 normally closed terminal, and one

normally open terminal. When the coil of the relay is at rest (not energized), the

common terminal and the normally closed terminal have continuity. When the coil is

energized, the common terminal and the normally open terminal have continuity. This

relay's coil is rated up to 5V and the contact is rated up to 30A (@250VAC, 30VDC).You

can use it to control high current devices.

Feature



High Switching Current



SPDT Relay



Normally closed relay

Tip

More details about Grove modules please refer to Grove System

coil soft iron core coil connection soft iron armature operation ’7 swilch contacis normally open 1* common normally closed

Specification

ItemMinTypicalMaxUnit

workingVoltage4.755.05.25VDC

Current‐185‐mA

Pull‐InVoltage(Max)‐3.75‐VDC

OperationTime(Max)‐15‐ms

ReleaseTime(Max)‐10‐ms

OperatingAmbientTemperature‐25‐ 70°C

Usage

With Arduino

Why do we want to use a relay and do we really need to? Anytime you want to switch

on/off a device which draws more current or works with a high voltage, you'll need to

use a relay. That is to say, the relay is "a high voltage or current switch controlled by low

voltage". The coil of an SPDT relay that we most commonly use draws very little current

(the Grove - Relaysupports 10A). Now, with this 30A relay, you can control much more

high-current switch devices such as headlights, parking lights, horns, etc.

The SPDT Relay internal structure:

Powr SuDDIV

You may see that the common terminal and the normally closed terminal have

continuity When the coil of the relay is at rest.

But when the coil is energized, the common terminal and the normally open terminal will

have continuity.

Hardware Installation can refer to the following picture:

The coding to control this relay is the same as the Grove - Relay

Good luck to you for controlling your air-condition or washing machine, with Arduino and

the Grove - SPDT Relay(30A).

With Raspberry Pi

1.You should have got a raspberry pi and a grovepi or grovepi+.

2.You should have completed configuring the development enviroment, otherwise

follow here.

3.Connection - Plug the sensor to grovepi socket D4 by using a grove cable.

4.Navigate to the demos' directory:

1 cd yourpath/GrovePi/Software/Python/

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To see the code

1 nano grove_spdt_relay.py # "Ctrl+x" to exit #

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import time

import grovepi

# Connect the Grove SPDT Relay to digital port D4

# SIG,NC,VCC,GND

relay = 4

grovepi.pinMode(relay,"OUTPUT")

while True:

try:

# switch on for 5 seconds

grovepi.digitalWrite(relay,1)

print "on"

time.sleep(5)

# switch off for 5 seconds

grovepi.digitalWrite(relay,0)

print "off"

time.sleep(5)

except KeyboardInterrupt:

grovepi.digitalWrite(relay,0)

break

except IOError:

print "Error"

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5.Run the demo.

1 sudo python grove_spdt_relay.py

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Resource

 Grove - SPDT Relay(30A) Eagle File

 SLA-05VDC-SL-C Datasheet

Tech Support

Please submit any technical issue into our forum or drop mail to techsupport@seeed.cc.

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