Siemens SINUMERIK 840D sl Commissioning Manual page 330

Service and diagnostics
18.2 Displaying the Service overview
Speed lower than threshold setting
The status display of the drive as to whether the threshold speed has been undershot
corresponds to the interface signal:
DB31, ... DBX94.5 "|n
Status
1
0
Actual speed = set speed
The status display of the drive as to whether the actual speed value matches the speed
setpoint corresponds to the interface signal:
DB31, ... DBX94.6 "|n
Status
1
0
Diagnostics for alarms
This information is also provided as a diagnostic tool for diagnosing the causes of alarms
such as:
● Drive fault:
⇒ SC1 drive alarm message is set.
⇒ Check specified drive data set, specified motor data set, DC-link voltage.
● Alarm 25040 "Standstill monitoring",
Alarm 25050 "Contour monitoring",
Alarm 25060 "Speed setpoint limitation",
Alarm 25080 "Positioning monitoring"
⇒ the drive enable may be missing (PLC pulse enable not present); this results in the
display Pulses enabled = No.
● Motor temperature = exceeded
⇒ check the current motor temperature.
For information on the behavior of the NC controller in response to individual alarms and the
remedy, please refer to:
References:
Diagnostic Manual
See also
Displaying drive states (Page 371)
324
| < n ".
act x
Meaning
The actual speed value |n
p2155.
The actual speed value is greater than the set threshold speed.
| < n ".
act set
Meaning
The speed deviation between the setpoint and actual value is within the
tolerance specified in p2163.
The speed deviation between setpoint and actual value is outside the
specified tolerance.
| is less than the threshold speed n
act
Commissioning Manual, 03/2013, 6FC5397-1DP40-3BA1
Display
set in Yes
x
No
Display
Yes
No
SINUMERIK Operate (IM9)