SPA2-2 motor connectors

DC motor connection card termination

Each DC motor connection card presents a 7W2 connector for connection of a CMM motor to the SPA2-2, as shown below:

SPA2-2 7W2 connector

There are seven connections available on this connector. The table shows the connections and default polarity configurations for all pins.

Connector pin

Function

A1

+ve motor connection (default)

A2

-ve motor connection (default)

1

+ve tacho input (default)

2

-ve tacho input (default)

3

ground reference

4

-ve tacho input (linked to pin 2)

5

ground reference

Shell

Screen

NOTE: The motor and tacho polarities on this connector are software configured during the SPA2-2 installation process.

WARNING: If the SPA2-2 is being integrated on a dual axes DCC driven machine it is essential
that the motor polarities on the dual axes are the same.

Additional axis interface card termination

The additional axis interface card presents 1 off 9W4 connector for connection of a CMM motor to the SPA2-2, as shown below:

SPA2-2 9W4 connector

There are seven connections available on this connector. The table below shows the connections and default polarity configurations for all pins.

Connector pin

Function

A1

+ve motor connection (default)

A2

Reserved for future expansion

A3

-ve motor connection (default)

A4

Reserved for future expansion

1

+ve tacho input (default)

2

-ve tacho input (default)

3

ground reference

4

-ve tacho input (linked to pin 2)

5

ground reference

Shell

Screen

WARNING: Pins with the function reserved for future expansion must not be connected to any other system component.

If the SPA2-2 is being integrated on a dual axes DCC driven machine it is essential that the motor polarities on the dual axes are the same.

NOTE: The motor and tacho polarities on this connector are software configured during the SPA2-2 installation process.