Function description
Operating Manual PSSu K F INC
1001688-EN-09
12
4
Function description
4.1
Block diagram
Module Bus
Periphery
Supply
+ 24 V DC
Module
Supply
+ 5 V DC
Data
(ST)
Input A
11 14
Input B
21 24
Input C
31 34 41 42 44
Inputs
G, S, L
4.2
Module features
4.2.1
Integrated protection mechanisms
When the PSSu E F PS1(-T) or PSSu E F PS2(-T)(-R) is used to supply the system, the
module supply is buffered for 20 ms if the supply voltage is interrupted.
The module detects the following errors:
}
Start-up error
}
Configuration error
}
ST communication error
}
Bus termination error
4.2.2
Function description
Module supply
}
The module supply provides the module with voltage.
Inputs
}
3 dual-pole, differential inputs A, B, C for connecting an incremental encoder or an en-
coder that provides rising edges as counter pulses.
}
3 single-pole inputs referenced to earth: G, L, S, for special functions
Operating modes
}
Incremental encoder
}
Counter
