Motion4Brake A6 Servos

Breakout Board for Stepperonline A6 Servo – DB15-HD to Screw Terminals

This compact breakout board significantly simplifies the wiring of the CN1 control port (DB15-HD) of the Stepperonline A6-EC series (EtherCAT only) for servo motors equipped with a holding brake. Instead of soldering individual wires into a 15-pin HD connector, all relevant signals are routed to clearly arranged screw terminals – ideal for machine building as well as DIY applications.

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Feature Overview

1. 24V Brake Power Supply (Servo Holding Brake)

• Terminals Vout+Vin and GND power the circuit
• for External 24V supply to power the brakes
• Integrated optocoupler provides galvanic isolation of the brake signal
• MOSFET switches the brake load
• Protection diode protects against voltage spikes
• BRAKE+ and BRAKE– connect directly to the motor brake terminals
• Signal logic: Active Low – brake closed at LOW

2. 24V Daisy-Chain Power Pass-Through

• VIN+VOUNT and GND allow 24V supply to be looped through from drive to drive
• Perfect for multi-axis systems: one power supply feeds multiple drives

3. Digital Inputs (DI) via 8-Pin Header (optional to solder pins yourself)
pins provide internal COM+ Voltage of +24V read servo  manual for using it

Pin	Signal	Function
1	COM–	Common ground (DI reference)
2	DI2_NEG_LIMIT_SW 24V	Negative limit switch
3	COM–	Common ground
4	DI1_POS_LIMIT_SW 24V	Positive limit switch
5	COM–	Common ground
6	DI3_HOME_SW 24V	Home / reference switch
7	VCC+24V External Supply	24V output External
8	BRAKE SIGNAL 24V	Brake signal input,no load !

 

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Technical Specifications

Feature	Value
Connector	DB15-HD (15-pin high-density)
Terminal block	6-pin, green, screw connection
Brake voltage	24V DC
Brake current	max. 3A
Brake logic	Active Low (brake closed = LOW)
Compatibility	Stepperonline A6-EC series (EtherCAT)
Dimensions	approx. 45 × 35 mm

 

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Package Contents

• 1× Breakout board with DB15-HD connector
• 2× Mounting screws

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Typical Applications

• Jack / leveling leg control with holding brake (e.g. motorhomes, stage automation)
• CNC axes with limit switches and home sensor
• Multi-axis servo systems in daisy-chain configuration

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Design & Assembly Notes

The breakout board is intentionally designed for single-side component assembly – all components are located on one side of the PCB. This significantly simplifies manufacturing and keeps production costs low.

Assembly sequence:

1. Mount terminal block – The green screw terminals are populated
   24V Power in daisy chain and the Brake wires lead to the motor
2. Flip the board – The PCB is then turned over to plug on the servo drive
3. Secure with two screws – The included screws mechanically lock the connection in place

⚠️ Note: Due to the single-side component assembly and the plug-and-screw fixing method, the board may sit at a slight angle on the servo drive. Once secured with the two screws, a small amount of pressure is applied to the connector. This is intentional by design, ensures a firm and reliable connection, and works excellently in practice.

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⚠️ Warranty & Liability Disclaimer

This product is designed for use in DIY and maker environments and is sold as-is. Please read the following carefully before purchasing:

• No reverse polarity protection is provided. Incorrect wiring, swapped polarities, or wrong voltage levels will permanently damage the board.
• No overcurrent or short-circuit protection is built in beyond the components shown in the schematic.
• The board requires basic electronics knowledge for safe and correct installation. It is not suitable for beginners without prior experience in servo wiring.
• No warranty or exchange guarantee is offered for boards damaged due to incorrect wiring, reversed connections, or improper use.
• We strongly recommend ordering a spare unit alongside your first board. This allows you to test and experiment without the risk of being left without a working solution if one board is accidentally damaged during setup.
• If in doubt, test your wiring on the bench before installing in your final application.

By purchasing this product, the buyer acknowledges that it is a DIY component and accepts full responsibility for correct installation and use.

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