Name
Description
Event code
4288-4297 Descr.
Time to reach 100 % theta
seconds
Ref. T current
x I
n
Active meas. current
x I
n
T at a given moment
%
Max. temp. rise allowed
degrees
Temp. rise at a given moment
degrees
Hot spot estimate
degrees
Hot spot maximum allowed
degrees
Trip delay rem.
seconds
Used SG
Setting group 1...8 active
5.3.22 Resistance temperature detectors
Resistance temperature detectors (or RTDs) can be used to measure both temperatures of motors/
generators and ambient temperatures. Typically an RTD is a thermocouple or of type PT100. Up to
three (3) separate RTD modules based on an external Modbus are supported; each can hold up to
eight (8) measurement elements. Up to two (2) separate RTD option cards are supported by this
function. Sixteen (16) individual element monitors can be set for this alarm function, and each of those
can be set to alarm two (2) separate alarms from one selected input. The user can set alarms and
measurements to be either in degrees Celsius or Fahrenheit.
The following figure shows the principal structure of the resistance temperature detection function.
A
AQ
Q-F215
-F215
Instruction manual
Version: 2.04
252