Siemens SINUMERIK 840D sl, Function Manual

Page: 2051 / 2184

Detailed Description
2.1 Various interface signals and functions (A2)
Basic logic functions: NC/PLC interface signals (Z1)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
55
DB31, ...
DBX94.1
Heatsink temperature prewarning
Edge evaluation: no Signal(s) updated: cyclic
Signal state 1 or
edge change
0 → 1
The drive module sends the warning "heatsink temperature prewarning" to the PLC.
This triggers the following:
•
Terminal 5 on the infeed/regenerative feedback module is simultaneously activated.
•
The drive module is switched off after 20 seconds. The drives are stopped when the impulse
enable is removed. Then alarm 300515 is triggered.
Signal state 0 or
edge change
1 → 0
The drive module heatsink temperature pre-warning has not responded.
Application
example(s)
As soon as "heatsink temperature prewarning" has been signaled, the PLC can, for example,
initiate controlled shutdown of the drives.
Additional references /DA/ Diagnostics Guide
DB31, ...
DBX94.2 Ramp-up completed
Edge evaluation: no Signal(s) updated: cyclic
Signal state 1 or
edge change
0 → 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
set
= n
act
- signal)
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
set
= n
act
- signal)
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 or
edge change
1 → 0
The conditions described above have not yet been fulfilled. The rampup has therefore not yet been
completed.