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We're Updating our Documentation! For the most up-to-date information about the Power Distribution Hub and other ION Control System Devices please check out the following new documentation pages:
These led patterns only apply to firmware version 21.1.7 and later
These led patterns only apply to version 21.1.7 and later
Sticky Fault - an indicator there was a fault that will stay until the fault has been cleared manually.
These led patterns only apply to version 21.1.7 and later
LED Status | LED Description | When | Hub Status |
---|---|---|---|
LED Status | LED Description | When | Component Status |
---|---|---|---|
LED Status | LED Description | When | Component Status |
---|---|---|---|
Blue Solid
Anytime
Device on but no communication established
Green Solid
Anytime
Main Communication with roboRIO established
Magenta Blinking
Anytime
Keep Alive Timeout
Solid Cyan
Anytime
Secondary Heartbeat (Connected to REV Hardware Client)
Orange/Blue Blinking
Anytime
Low Battery
Orange/Yellow Blinking
Anytime
CAN Fault
Orange/Cyan Blinking
Anytime
Hardware Fault
Orange/Magenta Blinking
Anytime
Device Over Current
LED off
Anytime
Channel has voltage and is operating as expected
Red Solid
Anytime
Channel has NO voltage and there is an active fault. Check for tripped or missing circuit breaker
Red Blink
Anytime
Sticky fault on the channel. Check for tripped circuit breaker.
LED off
Anytime
Channel has voltage and is operating as expected
Red Solid
Anytime
Channel has NO voltage and there is an active fault. Check for blown or missing fuse
Red Blink
Anytime
Sticky fault on the channel. Check for blown fuse
We're Updating our Documentation! For the most up-to-date information about the Power Distribution Hub and other ION Control System Devices please check out the following new documentation pages:
The most common Power Distribution Hub troubleshooting issues are listed below. After reading through, if you still have questions or need additional help, reach out to us at: support@revrobotics.com
Is your Status LED light showing a new color or sequence? Check the Status LED Pattern page!
If you are experiencing issues with your Power Distribution Hub that you are struggling to diagnose, we recommend following the troubleshooting guides and steps listed below, both in the flowchart and in the following subsections.
Smart Tug - tugging on a wire to test the connection with a reasonable amount of force.
Persists sticky faults across power cycles
Allows sticky faults to be cleared by holding down the device's button
Updates LED patterns
Turns off the switchable channel LED when the switchable channel is turned off
Reports to the REV Hardware Client whether a roboRIO is connected via the CAN network
When updating the firmware on the Power Distribution Hub, it is possible for the process to be interrupted or for the firmware to be corrupted by a bad download. In this state, the Status LED will be dark or dim and the Power Distribution Hub will fail to operate. There is a built-in recovery mode that can force it to accept new firmware even if the controller seems to be bricked and the procedure is outlined below:
Please note, performing this procedure will erase all data and settings on the device. To perform the procedure a small tool, like a straightened paper clip is necessary to press the Mode Button (located close to the LED status light), the orange USB-c cable that came with the unit (or a DATA capable USB-c cable), and a native Windows based computer with the REV Hardware Client installed:
With the Power Distribution Hub powered off, press and hold the Mode Button
While still holding the Mode Button, connect the Power Distribution Hub to the computer using the USB-c cable - the Status LED will illuminate a dim red - this is expected.
With the REV Hardware Client running on the computer, wait a few seconds for the audible tone or icon for the device to be recognized in recovery mode then release the Mode Button - no lights will be present on the Power Distribution Hub during this stage of the process, this is expected
Select the Power Distribution Hub in Recovery Mode from the REV Hardware Client window
From the Choose a Device type dropdown, choose - Power Distribution Hub
Choose latest version of Firmware from the dropdown and then click update
Wait for the software update to complete
Power cycle unit (unplug and plug in USB-c) click on Power Distribution Hub icon, clear any sticky faults - the recovery should be complete.
We're Updating our Documentation! For the most up-to-date information about the Power Distribution Hub and other ION Control System Devices please check out the following new documentation pages:
The following tables provide the operating and mechanical specifications for the Power Distribution Hub (PDH).
DO NOT exceed the maximum electrical specifications. Doing so will cause permanent damage to the Power Distribution Hub and will void the warranty.
The Power Distribution Hub's reverse polarity protection DOES NOT protect downstream devices. Verify the correct polarity on all power wires before operation.
Make sure to take into consideration current requirements when choosing wire gauge for any given application.
It is recommended to use a 20A fuse for a single Pneumatic Hub or Pneumatic Control Module connected to any of the three Low-current Channels if using a compressor with higher peak current draw, such as the CP26 or the Thomas 405ADC38.
DO NOT use thread-locking fluid on the mounting hardware for the REV Power Distribution Hub. Thread-locking fluid will damage the ABS plastic case.
Symptom | Possible Solution |
---|---|
No Voltage / Device Does not Turn On
Perform a smart tug to check that the battery wires have a good connection to the input terminals
Check your battery voltage on the PDH's display, then check the voltage through the REV Hardware Client. If the readings are inconsistent or missing, check your robot's battery wiring.
If only being powered via USB there will not be any input voltage.
Channel LED Keeps Flashing
Make sure that the circuit breaker is properly inserted and snug in the holder
If the problem persists you may have a fault on the load causing the breaker to trip. Make sure there are no problems with your connected devices.
CAN Warning
A CAN warning means that there is something wrong with your CAN bus. Check your CAN bus wiring and the devices on your CAN bus. Note: if you are operating the PH by itself using the REV hardware client, you can ignore most CAN warnings. The PH will send a CAN warning if it does not see any other device on the bus
CAN Bus Off
A CAN Bus Off fault means that the CAN bus has run into a critical issue resulting in the bus network turning off. Check your CAN bus for shorts on the high and low CAN wires. The CAN bus will turn back on once the issue is resolved.
Hardware Fault
The hardware fault is generally an internal electrical fault. This could also trigger a sticky fault if a large amount of electrical noise caused a brief communication breakdown internally. This will not affect the function of the device but there could be a small amount of data lost during the interruption.
Device has Reset
The Reset Fault will be triggered when the Power Distribution Hub has lost power.
This will happen each time the robot is turned on and off. It is possible that this could happen when the robot has a bad connection to the battery or the robot experiences a severe brownout.
When are Sticky Faults Cleared?
Sticky faults are cleared when the mode button on the Power Distribution Hub is pressed or can be cleared using the REV Hardware Client. It is also possible to clear sticky faults using WPILib.
Parameter
Min
Typ
Max
Units
Operating Voltage Range
4.7
12
18
V
Power Input Wire Gauge (Bare Solid)
18
-
6
AWG
Power Input Wire Gauge (Bare Stranded)
18
-
4
AWG
Power Input Bare Wire Strip Length
0.72
0.75
0.79
in
Power Input Wire Gauge (Stranded, with ferrule)
18
-
6
AWG
Input Voltage Measurement Resolution
-
7.81
-
mV
CAN Termination
-
120
-
Ω
CAN Terminal Wire Gauge (Bare Solid/Stranded)
24
-
18
AWG
CAN Terminal Bare Wire Strip Length
0.33
0.35
0.37
in
CAN Terminal Wire Gauge (Stranded, with ferrule)
24
-
18
AWG
Parameter
Min
Typ
Max
Units
Fuse/Circuit Breaker Size
-
ATO/ATC
-
-
Supported Fuse/Circuit Breaker Current Rating
-
-
40
A
Channel Current Measurement Range
0
-
127.9
A
Channel Current Measurement Resolution
-
125
-
mA
Supported Wire Gauge (Bare Solid/Stranded)
24
-
8
AWG
Bare Wire Strip Length
0.43
0.5
0.51
in
Supported Wire Gauge (Stranded, with ferrule)
23
-
10
AWG
Parameter
Min
Typ
Max
Unit
Fuse/Circuit Breaker Size
-
ATM/APM
-
-
Continuous Output Current
-
-
15
A
Single Channel Peak Output Current †
-
-
20
A
Supported Fuse/Circuit Breaker Current Rating
-
-
15
A
Supported Fuse/Circuit Breaker Current Rating for PH and PCM (See note below)
-
-
20
A
Channel Current Measurement Range
0
-
31.94
A
Channel Current Measurement Resolution
-
62.5
-
mA
Supported Wire Gauge (Bare Solid/Stranded)
24
-
18
AWG
Bare Wire Strip Length
0.33
0.35
0.37
in
Supported Wire Gauge (Stranded, with ferrule)
23
-
18
AWG
†
Peak current can be sustained for 5 min.
Parameter
Min
Typ
Max
Unit
Continuous Output Current †
-
-
15
A
Fuse/Circuit Breaker Size
-
ATM/APM
-
-
Supported Fuse/Circuit Breaker Current Rating †
-
-
15
A
Low Current Channels
0
-
31.94
A
Low Current Channel Resolution
-
62.5
-
mA
Switching Frequency
-
-
10
Hz
Supported Wire Gauge (Bare Solid/Stranded)
24
-
18
AWG
Bare Wire Strip Length
0.33
0.35
0.37
in
Supported Wire Gauge (Stranded, with ferrule)
23
-
18
AWG
†
Continuous current is thermally limited, therefore it depends on environmental and loading factors. Channel may shut itself off automatically if thermal limits are reached
Parameter
Min
Typ
Max
Units
Body Length
-
8.875
-
in
Body Width
-
4.375
-
in
Body Height
-
1.563
-
in
Weight
-
1.14
-
lbs
Mounting Hole Grid Pitch
-
0.5
-
in
Mounting Screw Size (Clearance)
-
#10
-
-
Case Material
-
ABS
-
-
The 3D printed Breaker Extractor makes freeing REV ATO Auto-resetting Breakers from the Power Distribution Hub easy!
First, grasp the T-handle of the extractor and slide the square frame around the breaker you would like to remove from the Power Distribution Hub.
Then, position the bottom edge of the breaker extractor under the bottom edge of the breaker. While maintaining that position, and contact with the plastic bottom of the breaker, gently rock the extractor handle side to side while pulling upwards.
Continue that motion until breaker is free.
We're Updating our Documentation! For the most up-to-date information about the Power Distribution Hub and other ION Control System Devices please check out the following new documentation pages:
Fixes issue where PDH will sometimes fail to update downstream devices via CAN
Improves accuracy of battery voltage reading
Improves hardware fault reporting
Improves switchable channel LED behavior
Blinks the status LED blue when sticky faults are successfully cleared via the MODE button
Fixes issue where the device would hang after receiving a malformed CAN frame
Fixes certain faults that were incorrectly triggered when the device was only powered via USB
Persists sticky faults across power cycles
Allows sticky faults to be cleared by holding down the device's button
Updates LED patterns
Turns off the switchable channel LED when the switchable channel is turned off
Reports to the REV Hardware Client whether a roboRIO is connected via the CAN network
We're Updating our Documentation! For the most up-to-date information about the Power Distribution Hub and other ION Control System Devices please check out the following new documentation pages:
Welcome to your new Power Distribution Hub from REV Robotics! This documentation is intended to answer any questions related to the Power Distribution Hub (PDH) used in the FIRST Robotics Competition. If there is a question that is not answered by this space, send our support team an email at support@revrobotics.com. We are happy to help point you in the right direction!
Have a specific question? Feel free to head straight to it using the navigation bar to the left. Each section is grouped with other topics that are similar.
Having trouble finding what you are looking for? Try the search bar in the upper right!
We recommend reading through this guide in its entirety at least once to fully understand all of the features of your Power Distribution Hub.
Install the REV Hardware Client before continuing with this guide. The REV Hardware Client is the best way to verify that the Power Distribution Hub is configured correctly and is required for using the CAN Interface.
RS485 Ports are not currently used in FRC and are included for potential future use
We're Updating our Documentation! For the most up-to-date information about the Power Distribution Hub and other ION Control System Devices please check out the following new documentation pages:
The REV Hardware Client has three tabs to manage different features of the Client. The Hardware Tab is where supported hardware devices are managed. The Downloads Tab allows for the downloading of supported device software for updating when offline. The About Tab has information on what devices are supported, updating the REV Hardware Client, and having issue reporting.
The Basic Tab is used to set the most common parameters for the Power Distribution Hub. You can also view and clear sticky faults here.
Sticky Fault - an indicator there was a fault that will stay until the fault has been cleared manually.
We're Updating our Documentation! For the most up-to-date information about the Power Distribution Hub and other ION Control System Devices please check out the following new documentation pages:
The REV Power Distribution Hub (PDH) is the latest evolution in power distribution for the FIRST Robotics Competition (FRC). With 20 high-current (40A max) channels, 3 low-current (15A max), and 1 switchable low-current channel, the PDH gives teams more flexibility for overall power delivery. The Power Distribution Hub features toolless latching WAGO terminals, an LED voltage display, and the ability to connect over CAN or USB-C to the REV Hardware Client for real-time telemetry, making it easier than ever to wire and debug your robot.
20 High-current channels
All supporting up to 40A
Supports ATO size breakers and fuses
3 Low-current channels
Supports up to 15A continuous, 20A peak for approved pneumatic control devices.
Supports ATM/APM size breakers and fuses
1 Switchable low-current channel
On/off control useful for LEDs and other indicators
Supports up to 15A continuous
Supports ATM/APM size breakers and fuses
Toolless and color-coded WAGO terminals for all main connections
Main power input - latching WAGO 2616 series
High-current channels - latching WAGO 2606 series
Low-current channels and CAN - push button WAGO 250 series
Advanced debugging features
Channel status LEDs for breaker status and fault feedback
LED input voltage display
Higher resolution and refresh rate current and voltage monitoring
CAN connectivity
Channel telemetry feedback to main robot controller
Configurable CAN termination on device
Firmware updating over CAN network
USB-C connectivity
USB-to-CAN device allowing for monitoring and updating devices on the CAN bus
Update and diagnose faults with the REV Hardware Client
ESD protection
We're Updating our Documentation! For the most up-to-date information about the Power Distribution Hub and other ION Control System Devices please check out the following new documentation pages:
Always make sure the the Power Distribution Hub is disconnected from any power source before adding or modifying connections.
For Battery Input use 18 to 4 AWG Wire, Stripped back ~0.75” (20mm)
For High-Current Channels use 24 to 8 AWG Wire, Stripped back ~0.5” (12mm)
Flip open the lever with an upward motion.
You can open the lever all the way to have it stay open or you can open it half way for quick wire changes.
Insert stripped wire into connector opening.
Push down the lever.
Test the wire by giving it a smart tug to ensure wire is connected securely.
Visually inspect to make sure no stray wires are outside of the connector port.
Smart Tug - tugging on a wire to test the connection with a reasonable amount of force.
Use 24 to 18 AWG Wire, Stripped back ~0.35” (8mm)
Press and hold down connector button.
Insert stripped wire into connector opening.
Release connector button.
Test the wire by giving it a smart tug to ensure wire is connected securely.
Visually inspect to make sure no stray wires are outside of the connector port.
Carefully insert the Circuit Breaker (CB) directly into the circuit breaker holder. Ensure that the blades of the circuit breaker slide into the circuit breaker holder.
Circuit breakers should not be loose or move at all when inserted correctly.
If the circuit breaker is loose, remove the circuit breaker and make sure you can see the opening on the circuit breaker holder, then reinsert into the holder.
New circuit breaker holders fit circuit breakers tightly. This can make it hard to pull out the circuit breaker.
Over time circuit breaker holders will become easier to use and stay snug!
When removing a circuit breaker, make sure to rock the circuit breaker back and forth to make it easier to pull up on.
We're Updating our Documentation! For the most up-to-date information about the Power Distribution Hub and other ION Control System Devices please check out the following new documentation pages:
The REV Hardware Client is software designed to make managing REV devices easier for the end user. This Client automatically detects connected device(s), downloads the latest software for those device(s), allows for seamless updating of the device(s), and allows for device configuration and management.
Operating System: Windows 10 (64-bit) or newer
Processor: 64-bit
Download the REV Hardware Client Installer above.
Run the Installer
Run the REV Hardware Client from the Windows Start Menu or a desktop shortcut
Startup the REV Hardware Client. Once the Power Distribution Hub is fully connected it will show up on the front page of the UI under the Hardware Tab. Select the Power Distribution Hub.
After selecting the Connected Hardware, the Update tab will pop up. Under Power Distribution Hub Firmware select Download.
Once the firmware has downloaded, select Update.
When the firmware update has completed a status message "Update Completed" will appear. The status for the Power Distribution Hub Firmware will also change to "Up-to-Date."
For more information on the REV Hardware Client, including a full list of supported devices, .
Latest REV Hardware Client - Version 1.5.3 |
---|
You can also download the REV Hardware Client using an offline installer, bundled with software from March 21st, 2023: -