To be more complete:
5-wire - unipolar only
4-wire - bipolar only
6 or 8-wire - can be wired as unipolar or bipolar. 8-wire can be wired as series or parallel bipolar
giving a choice of impedances.
To be more complete:
5-wire - unipolar only
4-wire - bipolar only
6 or 8-wire - can be wired as unipolar or bipolar. 8-wire can be wired as series or parallel bipolar
giving a choice of impedances.