Renishaw SPA3 Installation Manual page 19

SPA3 installation guide
www.renishaw.com
Axis0, Axis1 and Axis2 motor drive connectors
(7w2 D socket)
Each motor connection is a 7W2 connector for connection of a CMM motor to the SPA3, as shown below:
Pin no.
A1
A2
1
2
3
4
5
Shell
The table shows the default polarity configurations for all pins.
* NOTE: The motor and tacho polarities on the SPA3 are software configured during the installation process. The maximum tacho
voltage is 100 V. If one terminal of the tacho is grounded the maximum voltage is reduced to 18 V. It is recommended that a
differential tacho is used.
CAUTION: The SPA3 motor connections must be blanked off if not being used to prevent accidental contact which could result in
an electric shock.
Issued 11 2020
Function
Positive motor connection (default)
Negative motor connection (default)
Positive tacho input (default)
* Negative tacho input
(tacho) screen
* Negative tacho input
(tacho) screen
Screen (motor)
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