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This touchscreen controller can be used to control & monitor a single Eltek Flatpack2 24 V -or- 48 V rectifier being used as a general purpose PSU.
Skill level required: BASIC
Ability to solder connectors & wires
This product is not intended to simultaneously control multiple rectifiers, nor be an intelligent battery charger controller.
This controller is powered directly by the Flatpack2 it is supervising.
Ideal for permanent installation into your project.
Industrial grade Eltek Flatpack2 rectifiers make an ideal and robust power supply for amateur radio Solid State Power Amplifier projects.
This 3.5″ touchscreen-based controller allows setting and monitoring of parameters that Flatpack2 provides via it’s CAN-bus:
• AC Volts in
• DC Volts out
• Load current
• Intake temperature
• Output temperature
• Operating status
• Alarm & warning messages
Voltage can be shifted up or down in 200mV steps by touching the UP/DOWN arrows.
This does not affect the default start up voltage.
Log in icon indicates when controller sends a log in request. Every 5 seconds.
Short press “SET” button: reset screen saver
Long press “SET” button: enter Set menu
• Screen backlight brightness
• Screen saver (enter 0 to disable screen saver)
• Output voltage to 1 or 2 decimal places select
• Temperature Celsius / Fahrenheit select
• Current Limit in deciAmps
• Overvoltage protection offset
• Slow or Fast ‘walk-in’ (output voltage ramp up time)
Set Default Volts page
Voltage is entered as centiVolts by keypad.
ie: 45.50 V = 4 5 5 0
If an alarm or warning (or both) state is detected, the appropriate icons become red.
Clicking on either of these icons will take you to the Warnings/Alarms page:
Foreground and background colours of each parameter can be adjusted to your own preference, as well as a choice of two fonts.
Example: setting DC Volts colour & font:
High Voltage Power Supply
+5V regulator uses a Maxim MAX5035 DC-DC Step-down converter, and is rated to an input voltage of 76 volts.
Quality Panasonic aluminium electrolytic capacitors are used.
Capacitor on the DC input is rated at 100V.
A diode on the DC input provides against accidental reverse polarity connection.
Warning – what can happen with cheap “high voltage” LM2596HVS modules on eBay:
The controller easily mounts to the Flatpack chassis, or any other flat surface, using adhesive PCB stand-offs (supplied).
What do I need to do?
Controller board is fully assembled and fitted with a CAN bus adapter, and programmed & tested Arduino Nano ready to connect to the programmed & tested Nextion 3.5″ Enhanced HMI touchscreen.
You are required to;
• solder your own wires to the power connector (supplied) and CAN bus connector (supplied) to suit your own installation, and connect these to the rear of the FP2
• mount the controller board to suit your own installation
• mount the touchscreen to suit your own installation
• connect the touchscreen to the controller board, as per the User Guide
What’s in the box?
• 1 x assembled & tested Controller board
• 1 x programmed 3.5″ HMI touchscreen
• 1 x matching 2 pin polarised connector for Controller power
• 1 x matching 3 pin polarised connector for CAN data
• 4 x adhesive PCB stand-offs
This is ready to connect to your own Flatpack2 and breakout board.
Breakout boards on eBay I have used and can recommend:
Designed to control a single Eltek 24 V -or- 48 V Flatpack2 rectifier being used as a general purpose PSU.
• Flatpack2 48/2000 HE 24115.105 Rev 3.2 (VK4GHZ)
• Flatpack2 48/2000 HE 24115.105 Rev 4 (thanks Peter, VK5PW)
• Flatpack2 48/2000 HE 24115.105 Rev 5.4 (thanks Colin, G4ERO)
• Flatpack2 48/2000 HE 24115.115SC Rev 3.2 (VK4GHZ)
• Flatpack2 24V/2000 24115.200 Rev 3.2 (VK4GHZ)
• Flatpack2 48/3000 HE 24119.105 Rev 3.1 (thanks Craig Whiteside)
• Flatpack2 48/3000 HE 24119.105 Rev 3.4 (thanks Tor, N4OGW)
(click on images to enlarge)
Will it work with other Flatpack2 rectifier variants not listed above?
I cannot answer that question for you.
What you see above is what it’s known to work with.
Some older Eltek rectifiers (Revision 1.2) have been reported to be incompatible.
You would need to try other variants at your own risk.
Note: Eltek chargers use a different CAN bus protocol compared to Eltek rectifiers, and are not compatible.
Note: Flatpack2 rectifier and Flatpack2 interface PCB seen in sample images are not supplied with this item
|Dimensions||160 × 105 × 50 mm|