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5
Primary device functions (continued)
5.5
Contact Temperature
5.5.1 Description
The
Contact Temperature
function measures the
temperature of the surface the sensor is mounted on. A
typical use case is to monitor the temperature of a bearing
or a mechanical drive over time. Acquiring data over time
allows the evaluation and extraction of information about
the status of the machine. This function aims for
monitoring applications, and it is not identical with the
specialized temperature sensor’s output.
Due to self-heating, the contact temperature readout may
slightly differ from the real surface temperature. Therefore it
is mandatory to mount the sensor properly on the surface
with good thermal contact.
The function enables alarms for exceeding or
undershooting temperature alarm levels. Additional
maximum and mean values since startup and during the
lifetime are stored and readable.
5.5.2 Process data
PD Object ID
Name
Description / Contains info
Direction
0xA000
PD Contact Temp.
Determines the contact temperature of the object measured by the
device. The unit is °C.
Input
0xA053
PD Alarm
ContTemp Low
1 – If
PD Contact Temp.
≤
Alarm Level Contact Temperature Low
for at
least
Alarm Set Delay ms
and
Enable
Alarm Contact Temperature
is set.
0 – If
PD Contact Temp.
≥
Alarm Level Contact Temperature Low
for at
least
Alarm Reset Delay ms
or
Enable Alarm Contact Temperature
is
cleared.
Input
0xA052
PD Alarm
ContTemp High
1 – If
PD Contact Temp.
≥ A
larm Level Contact Temperature High
for at
least Alarm Set Delay ms
and
enable Alarm Contact Temperature is set.
0 – If
PD Contact Temp.
≤
Alarm Level Contact Temperature High
for at
least
Alarm Reset Delay ms
or
Enable Alarm Contact Temperature
is
cleared.
Input
Tab. 5-23: Contact Temperature – Process data
BCM R16E-004-CI0 _ - _ _ , _-S4
Condition Monitoring Sensor