Spin Bridge Pinout

The Spin Bridge is the central interface between the SD/SDV-Series tool, the robot or PLC, and the safety system. All electrical connections to the tool are routed through it.

It provides the following electrical interfaces:

4-pin terminal socket for safety (OSSD + 24 V/0 V supply)
M12 power connector (48 V motor supply)
M12 communication connector (tool interface)
USB 2.0 host
2 × Ethernet ports (1: External network, 2: Robot connection)
Factory reset button
USB Micro (service port – do not use)
LED status indicators

Drawing of the Spin Bridge front panel, with its terminal blocks, M12 connectors, ports, reset button and LEDs labeled

Safety Terminal (OSSD Interface)

Close-up of the Safety terminal block beside the Power and Comm connectors

Safety terminal pinout

Pin	Signal
1	0 V (from robot / safety supply)
2	+24 V (from robot / safety supply)
3	S_b (OSSD channel B)
4	S_a (OSSD channel A)

The safety interface is powered externally by the robot or PLC. The OSSD signals are dual-channel, pulse-tested safety outputs.

Warning

The Spin Bridge provides safety-related signals but does not perform the safe stop function. The robot or PLC must monitor both OSSD channels and initiate a safe stop if either channel goes low. If it does not, the robot does not stop when the safety sensor triggers.

48 V Motor Supply Interface

The 48 V motor supply is generated and supplied by the Spin Bridge.

The internal power supply provides 48 V for the screwdriver motor
The supply is internally switched and forwarded to the tool

The 48 V circuit can be interrupted by internal control (software) or by an external safety relay wired into the I/O connector’s 48 V motor loop, which allows motor power to be removed as part of the safety system — see I/O module. Removing the 48 V supply fully de-energizes the motor.

Tool Communication Interface (M12)

The M12 communication connector provides:

RS485 communication
24 V supply for tool electronics
Internal routing of safety signals from the tool

Refer to Tool Pinout for detailed pin assignments.

Ethernet Interfaces

The Spin Bridge provides two RJ-45 Ethernet ports:

Port 1 – External network (service, configuration, OPC-UA)
Port 2 – Robot connection

USB Interfaces

The Spin Bridge includes:

USB Host (for external devices)
USB Micro (service interface - DO NOT USE)

Note

The USB Micro port is for service use only and must not be used during normal operation.

LED Indicators

Close-up of the Power, Tool and Robot LEDs beside the ethernet ports

Status LEDs

LED	Function
Power	Spin Bridge is powered
Tool	Tool is connected and communicating
Robot	Robot connection is active

I/O Module

The I/O module enables control of the SD/SDV-Series without robot-specific software.

Note

Older Spin Bridge models do not include the I/O module.

Notice

Connecting the I/O module while the robot or Spin Bridge is powered can damage the equipment. Ensure that both are powered off before connecting it.

Close-up of the Output, Input and Safety terminal blocks with their pin labels

The I/O interface:

Complies with IEC 61131-2
Is galvanically isolated
Is powered externally via the safety connector (24 V / 0 V from robot)

I/O connector pinout

Pins	Function
1–2	0 V (robot 0 V, via the safety terminals – no wire needed)
3–10	Outputs 1–8 (sourcing, 24 V from the robot supply)

Pins	Function
1	48 V output
2	48 V motor loop (break to disable motor supply)
3–10	Inputs 1–8 (from robot)

All I/O signals are referenced to the external 24 V/0 V supply provided by the robot or PLC. I/O functions are configured on the Spin Dashboard — see Dashboard.