Xenus Plus Compact STO Manual
16-01553 Rev 00
Copley Controls
Page 18 of 31
7.0 Installation Using STO for
Xenus Plus Compact
7.1
STO Wiring Overview
This diagram gives detail on the physical cabling, shielding, and grounding of the wiring between the
drive STO inputs and the machine level safety circuits.
7.1.1 STO Power Requirements
The 24V power supply for the STO inputs must be SELV or PELV rated.
The 24V power supply for the drive control power must be SELV or PELV rated.
7.1.2 STO Wiring Requirements
Electrical connections to the STO inputs must meet the requirements for fault exclusions for short circuits
between conductors and short circuits between conductors and other conductive parts or earth or the
protective bonding conductor.
These requirements are given in ISO 13849-2 and IEC 61800-5-2.
Toward this end, the DB-9 mating connector for making connections to the STO inputs must be a crimp and
poke type in order to meet the relevant fault exclusions.
A solder-cup style must not be used.
Fig. 3
