Siemens SINUMERIK 828D Function Manual page 1650

Z1: NC/PLC interface signals
19.1 Various interface signals and functions (A2)
DB31, ...
|M
DBX94.3
Corresponding to ... DB31, ... DBX94.2 (ramp-up completed)
MD1428 $MD_TORQUE_THRESHOLD_X
MD1429 $MD_TORQUE_THRESHOLD_X_DELAY
MD1427 $MD_SPEED_DES_EQ_ACT_DELAY
Additional /IDsl/ Commissioning Manual IBN CNC: NCK, PLC, Drive
references
DB31, ...
|n
DBX94.4
act
Edge evaluation: no
Signal state 1 The drive signals the PLC that the speed actual value nact is less than the minimum speed (n
The minimum speed is defined using the machine data:
MD1418 $MD_SPEED_THRESHOLD_MIN
.
Signal state 0 The speed actual value is higher than the minimum speed.
Corresponding to ... MD1418 $MD_SPEED_THRESHOLD_MIN (minimum speed (n
Additional /IDsl/ Commissioning Manual IBN CNC: NCK, PLC, Drive
references
DB31, ...
|n
DBX94.5
act
Edge evaluation: no
Signal state 1 The drive signals to the PLC that the speed actual value n
The threshold speed is defined using the machine data:
MD1417 $MD_SPEED_THRESHOLD_X
.
Signal state 0 The speed actual value is higher than the threshold speed.
Corresponding to ... MD1417 $MD_SPEED_THRESHOLD_X (threshold speed (n
Additional /IDsl/ Commissioning Manual IBN CNC: NCK, PLC, Drive
references
DB31, ...
n
DBX94.6
act
Edge evaluation: no
Signal state 1 The drive signals the PLC that after a new speed setpoint has been entered, the speed actual value
n
act
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 for n
(refer to the diagram).
If the speed actual value then leaves the tolerance bandwidth, then contrary to the signal "ramp-up
completed", the interface signal:
DB31, ... DBX94.6 (n
is set to 0.
1650
| < M
d dx
| < n
min
Signal(s) updated: Cyclic
| < n
x
Signal(s) updated: Cyclic
= n
set
Signal(s) updated: Cyclic
has reached the speed tolerance bandwidth:
= n
act set
)
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
for n < n ))
min act min
is less than the threshold speed (n
act
for n < n ))
x act x
= n signal)
set act
= n signal)
set act
).
min
).
x
Basic Functions