Siemens SINUMERIK 828D Function Manual page 1646

Z1: NC/PLC interface signals
19.1 Various interface signals and functions (A2)
DB31, ...
DBX94.1 Heat sink temperature pre-warning
Application As soon as "heatsink temperature prewarning" has been signaled, the PLC can, for example, initiate
example(s) controlled shutdown of the drives.
Additional /DAsl/ Diagnostics Guide
references
DB31, ...
DBX94.2 Ramp-up completed
Edge evaluation: no
Signal state 1 The PLC is signaled, that after a new speed setpoint has entered, the speed actual value has
reached the speed tolerance bandwidth:
MD1426 $MD_SPEED_DES_EQ_ACT_TOL (tolerance bandwidth for n
and has remained within this tolerance bandwidth for at least the time defined using machine data:
MD1427 $MD_SPEED_DES_EQ_ACT_DELAY (delay time n
refer to the diagram).
Even if the speed actual value leaves the tolerance band (because of speed fluctuations resulting
from changes in load) the "ramp­up completed" signal remains (1 signal).
Signal state 0 The conditions described above have not yet been fulfilled. The ramp­up has therefore not yet been
completed.
1646
Signal(s) updated: Cyclic
= n - signal)
set act
= n - signal)
set act
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Basic Functions