Products for USB Sensing and Control
Products for USB Sensing and Control

PHIDGETS Inc.

Unit 1 - 6115 4 St SE
Calgary AB  T2H 2H9
Canada
+1 403 282-7335

Programmable Power Guard Phidget

ID: SAF1000_0
Recommended for new designs: This product (or a similar replacement with a compatible form, fit and function) is estimated to be available for ten years or more.

Protect your circuit and power supply by detecting and preventing overvoltage and overtemperature situations.

$60.00

Quantity Available: 453

Qty Price
5 $57.00
10 $54.00
25 $48.00
50 $42.00
100 $39.00
250 $36.00
500 $33.00
1000 $30.00

The Power Guard Phidget is designed to protect your hardware by detecting and preventing overvoltage and over-temperature situations. This board is designed for high current systems and is capable of protecting your equipment from even the largest of power spikes. This Phidget connects to your computer through a VINT Hub.

Use the SAF100 when the motor rated current is greater than 5A.

Features:

  • Prevent current from flowing back to the power supply
  • Heatsink and fan to dissipate excess power
  • Select Overvoltage via software 8 - 33 VDC
  • Select temperature threshold via software
  • Control power via software - like a relay

Technical Details:

  • Isolation - A Power surge on the load side of the relay will not damage the VINT Hub or computer
  • If communication between this board and the computer is interrupted, it will continue to power the device and protect against the last chosen overvoltage trigger.

VINT Hubs

This Phidget is a smart device that must be controlled by a VINT Hub. For more information about VINT, have a look at the VINT Primer. You can use a Phidget Cable to simply and easily connect the two devices. Here's a list of all of the different VINT Hubs currently available:

Product Board
Image Part Number Price Number of VINT Ports Controlled By
HUB0000_0 $30.00 6 USB (Mini-USB)
HUB5000_0 $60.00 6 Local Network (Ethernet or Wi-Fi)
SBC3003_0 $120.00 6

Phidget Cables

Use a Phidget cable to connect this device to the hub. You can solder multiple cables together in order to make even longer Phidget cables, but you should be aware of the effects of having long wires in your system.

Product Physical Properties
Image Part Number Price Cable Length
3002_0 $2.00 600 mm
3003_0 $1.50 100 mm
3004_0 $3.00 3.5 m
3034_0 $1.50 150 mm
3038_0 $2.25 1.2 m
3039_0 $2.75 1.8 m
CBL4104_0 $1.75 300 mm
CBL4105_0 $2.00 900 mm
CBL4106_0 $2.50 1.5 m

Power Supplies

This Phidget protects a power supply between 8 and 30V DC. Check the product page or data sheet of the device being powered to determine how much current is needed and what voltage range is permissable. Select the power supply from the list below that matches your region's wall socket type.

Product Electrical Properties Physical Properties
Image Part Number Price Power Supply Current Output Voltage Wall Plug Style
3022_0 $10.00 2 A 12 V Australian
3023_1 $10.00 2 A 12 V European
3024_1 $10.00 2 A 12 V North American
3025_0 $10.00 2 A 12 V British
3084_0 $1.50 500 mA 12 V European
3085_0 $1.50 500 mA 12 V North American
3086_0 $10.00 1 A 24 V North American
PSU4013_0 $20.00 2.5 A 24 V
PSU4014_0 $40.00 5 A 24 V
PSU4015_0 $20.00 1 A 24 V
PSU4016_0 $40.00 15 A 24 V
PSU4017_0 $75.00 15 A 24 V
PSU4018_0 $20.00 5 A 12 V


Part 1: Setup

Welcome to the SAF1000 user guide! In order to get started, make sure you have the following hardware on hand:

Next, you will need to connect the pieces:

SAF1000 Functional.jpeg
  1. Connect the SAF1000 to your VINT Hub using the Phidget cable.
  2. Connect the VINT Hub to your computer using the USB cable.
  3. Connect the positive power terminal of the device you're powering to the "OUT" terminal on the SAF1000.
  4. Connect the ground terminal of the device you're powering to the ground terminal on the SAF1000.
  5. Connect the positive and negative wires of your power supply to the "Vin" and "GND" terminals of the SAF1000, respectively.
  6. Plug in your power supply.


Phidget Control Panel

In order to demonstrate the functionality of the SAF1000, the Phidget Control Panel running on a Windows machine will be used.


The Phidget Control Panel is available for use on both macOS and Windows machines.

Windows

To open the Phidget Control Panel on Windows, find the Ph.jpg icon in the taskbar. If it is not there, open up the start menu and search for Phidget Control Panel

Windows PhidgetTaskbar.PNG

macOS

To open the Phidget Control Panel on macOS, open Finder and navigate to the Phidget Control Panel in the Applications list. Double click on the Ph.jpg icon to bring up the Phidget Control Panel.


For more information, take a look at the getting started guide for your operating system:


Linux users can follow the getting started with Linux guide and continue reading here for more information about the SAF1000.

First Look

After plugging the SAF1000 into your computer and opening the Phidget Control Panel, you will see something like this:

SAF1000 Panel.jpg


The Phidget Control Panel will list all connected Phidgets and associated objects, as well as the following information:

  • Serial number: allows you to differentiate between similar Phidgets.
  • Channel: allows you to differentiate between similar objects on a Phidget.
  • Version number: corresponds to the firmware version your Phidget is running. If your Phidget is listed in red, your firmware is out of date. Update the firmware by double-clicking the entry.


The Phidget Control Panel can also be used to test your device. Double-clicking on an object will open an example.

Part 2: Using Your Phidget

About

The Power Guard Phidget is designed to protect your hardware by detecting and preventing overvoltage and over-temperature situations. If the voltage or temperature exceeds the thresholds chosen in your program, it will automatically cut power. You can re-enable power via software when you’ve determined that conditions are safe to do so.

Explore Your Phidget Channels Using The Control Panel

You can use your Control Panel to explore your Phidget's channels.

1. Open your Control Panel, and you will find the following channels:

SAF1000 Panel.jpg

2. Double click on a channel to open an example program. Each channel belongs to a different channel class:

Power Supply Protector: Configures the voltage limit and fan settings

In your Control Panel, double click on "Power Supply Protector":

SAF1000-PowerGuard.jpg
Temperature Sensor: Measures the ambient temperature

In your Control Panel, double click on "Temperature Sensor":

SAF1000-TemperatureSensor.jpg
Voltage Sensor: Monitors the power supply voltage

In your Control Panel, double click on "Voltage Sensor":

SAF1000-VoltageInput.jpg

Part 3: Create your Program

1. Setting up your Programming Environment

2. Phidget Programming Basics

Part 4: Advanced Topics and Troubleshooting

How do I know what channel, serial number, or hub port to use in my program?

Before you open a Phidget channel in your program, you can set these properties to specify which channel to open. You can find this information through the Control Panel.

1. Open the Control Panel and double-click on the red map pin icon:

The locate Phidget button is found in the device information box

2. The Addressing Information window will open. Here you will find all the information you need to address your Phidget in your program.

All the information you need to address your Phidget


See the Phidget22 API for your language to determine exact syntax for each property.

Failsafe Feature

Starting from firmware version 110, using Phidget22 library versions 1.0.0.20190107 and later, this device supports the use of a failsafe feature to put your device in a safe state should your program hang or crash.

With this feature, the PowerGuard channel on this device has a settable failsafe timer.

If the failsafe is not enabled, the device will behave as it did before the addition of this feature, maintaining the last state it received until it is explicitly told to stop.

Enabling the failsafe feature for a channel starts a recurring failsafe timer. Once the failsafe timer is enabled, it must be reset within the specified time or the channel will enter a failsafe state. Resetting the failsafe timer will reload the timer with the specified failsafe time, starting when the message to reset the timer is received by the Phidget.

For example: if the failsafe is enabled with a failsafe time of 1000ms, you will have 1000ms to reset the failsafe timer. Every time the failsafe timer is reset, you will have 1000ms from that time to reset the failsafe again.

Diagram of the failsafe behaviour when set to 1000ms

If the failsafe timer is not reset before it runs out, the channel will enter a failsafe state. For PowerGuard channels, this will disable the power output. Once the channel enters the failsafe state, it will reject any further input until the channel is reopened.

To prevent the channel from falsely entering the failsafe state, we recommend resetting the failsafe timer as frequently as is practical for your applicaiton. A good rule of thumb is to not let more than a third of the failsafe time pass before resetting the timer.

Once the failsafe has been enabled, it cannot be disabled by any means other than closing and reopening the channel.

When you use a failsafe in your program, we strongly recommend setting up an error event handler to catch the Failsafe Error Event, to allow your program to catch the failsafe event.

If you want your program to try to automatically recover from a failsafe state, you can close and re-open the channel from the error event handler after determining a failsafe condition caused the event.

Product Specifications

Board Properties
Controlled By VINT
Power Supply Protector
Overvoltage Setting Selectable via software 8 - 33 VDC
Overtemperature Trigger 125 °C
Sampling Interval Min 100 ms/sample
Sampling Interval Max 60 s/sample
Fan Trigger 75 °C
Electrical Properties
Continuous Current 50 A
Current Consumption Min (VINT Port) 100 μA
Supply Voltage Min 8 V DC
Supply Voltage Max 30 V DC
Power Consumption 250 mW
Physical Properties
Recommended Wire Size 6 - 14 AWG
Operating Temperature Min -40 °C
Operating Temperature Max 85 °C
Customs Information
Canadian HS Export Code 8471.80.00
American HTS Import Code 8471.80.40.00
Country of Origin CN (China)

Documents

Product History

Date Board Revision Device Version Comment
August 2017 0 101 Product Release
January 2018 0 102 Increased change trigger limit from 25V to 32V
May 2019 0 110 Added failsafe timer functionality

Software Objects

Channel NameAPIChannel
Power Supply Protector PowerGuard 0
Voltage Sensor VoltageInput 0
Temperature Sensor TemperatureSensor 0

API


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Code Samples

Language:

APIDetailLanguageOS
PowerGuard Visual Studio GUI C# Windows Download
PowerGuard Java Android Download
PowerGuard JavaScript Browser Download
PowerGuard Objective-C macOS Download
PowerGuard Swift macOS Download
PowerGuard Swift iOS Download
PowerGuard Visual Basic .NET Windows Download
PowerGuard Max/MSP Multiple Download
VoltageInput Visual Studio GUI C# Windows Download
VoltageInput Java Android Download
VoltageInput Multi-Channel Example JavaScript Browser Download
VoltageInput JavaScript Browser Download
VoltageInput Objective-C macOS Download
VoltageInput Swift macOS Download
VoltageInput Swift iOS Download
VoltageInput Visual Basic .NET Windows Download
VoltageInput Max/MSP Multiple Download
TemperatureSensor Visual Studio GUI C# Windows Download
TemperatureSensor Java Android Download
TemperatureSensor JavaScript Browser Download
TemperatureSensor Objective-C macOS Download
TemperatureSensor Swift macOS Download
TemperatureSensor Swift iOS Download
TemperatureSensor Visual Basic .NET Windows Download
TemperatureSensor Max/MSP Multiple Download