Eltek FLATPACK2 24/48V Touchscreen Controller Kit v2 – NEW

Description

New model – April 2025

This 3.5″ touchscreen controller can be used to control & monitor an Eltek Flatpack2 24 V  -or-  48 V rectifier being used as a general purpose PSU. 

Skill level required: Medium
• Ability to solder connectors & wires
• Ability to drill, cut and file your enclosure’s front panel to mount the display

 

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 controller displays the following parameters that Flatpack2 provides via it’s CAN-bus:

• AC Volts in
• DC Volts out
• DC Load current
• Intake temperature
• Output temperature
• Operating status
• Alarms (if present)
• Warnings (if present)

• DC Output power calculated from V * I

 

Display Features

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

 

Set Menu:

 

Screen Settings

• Screen backlight brightness

• Screen saver (enter 0 to disable screen saver)

• Output voltage to 1 or 2 decimal places select

• Temperature Celsius / Fahrenheit select

 

General Settings

• 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

The controller is powered directly from your Eltek Flatpack2.

+5V regulator uses a Maxim MAX5035 (or MAX5033) DC-DC Step-down converter, rated to 76 volts input.

Quality Panasonic 100V aluminium electrolytic capacitors used on the DC input. 

 

Warning – what can happen with cheap “high voltage” LM2596HVS modules on eBay:

 

Mounting

The new controller board is designed to piggy back on the touchscreen.

Both touchscreen and controller can be mounted to your front panel with the one set of supplied M3 hardware.

 

What do I need to do?

Controller board is fully assembled and fitted with a CAN bus adapter, and programmed & tested MCU ready to connect to the programmed & tested 3.5″ 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 touchscreen & controller to suit your own installation (M3 holes)

• 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 & cable

• 2 pin polarised connector for power

• 3 pin polarised connector for CAN data

• M3 mounting hardware set (25mm screws, 6.3mm spacers, washers, nuts)

 

 

This is ready to connect to your own Flatpack2 and breakout board.

 

Breakout boards on eBay I have used and can recommend:

Australia: https://www.ebay.com.au/itm/234888837229

UK:  https://www.ebay.com.au/itm/19602562269

 

 

Designed to control a single Eltek 24 V  -or-  48 V Flatpack2 rectifier being used as a general purpose PSU. 

 

Check compatibility here:

Eltek Controller Compatibility

 

Will it work with Eltek Chargers?

No.

 

User Guide

Touchscreen Controller User Guide 2-APR-2025

 

 

Note:  Flatpack2 rectifier and Flatpack2 interface PCB seen in sample images are not supplied with this item