ABB AN00250 Motion Control Products Tuning drives Overview
Overview
1.1 Recommended I/O connections
If there is any kind of safety requirement in the process then use of the two Safe Torque Off (STO) inputs on the drive which
provide a TUV certified SIL 3 STO functionality should be made. Apart from these STO connections it is not essential to add any
additional control connections although it is common to include a drive enable input when using the drive in combination with a
motion controller providing hardwired analog and/or digital control connections (e.g. NextMove ESB-2).
The digital inputs on the drive allow connection of devices such as a home sensor or limit switches. Two of these inputs (1 and
2) can be used for high speed registration, capturing position in the order of nS to μS (depending on feedback type). Digital
outputs can be configured for functions such as ‘drive ready’ and the relay output (DO4) can be used for functions such as
motor brake control (remembering to follow the instructions in the installation manual to use an isolated 24Vdc supply for the
motor brake circuit via this relay).