In some CMMs the user may want to lock an axis in place in order to work with more ease and safety in cramped places. For this reason, Sinai offers a board dedicated to handling an electromagnetic brake. This board, circle-shaped to install it directly above the brake, can activate the brake itself according to the speed of the connected axis. This functionality is useful to prevent falls of the measuring arm of the machine, thus avoiding damage to the probe and the machine iself. The brake can also be activated according to the position of the connected axis, for example to lock the machine when it is in "rest position".

The board can be powered at 12Vdc and activate brakes at 24V, provided they are not more than 25W in power. This working mode is useful when needing to minimize the current needed to hold the brake. An additional advantage is the little heat generated by the brake. This avoids localized thermal expansion and the conseguent loss of accuracy of the machine.

The digital I/Os of the board allow for the connection of a button to manually enable or disable the brake and of a status LED.