Rockwell Automation 937CS-AITMP-DC1 Universal Temperature Converter Installation Instructions - Manual (Page 23)

22
Bul. 937
C Universal Temperature Converter Installation Instructions
At this setting, the start value of the measurement range is converted to 0 mA and the end value to
20 mA. Intermediate values are converted proportionately.
Values less than the start value cannot be evaluated (output 0 mA). If the value exceeds the end value,
the output current increases linearly to a maximum of 20.5 mA (102.5 % of the measuring range).
Further increases cannot be evaluated (output 20.5 mA).
Fault current
The following table shows the values of the current output during a fault, depending on the settings.
For information on the behavior of the current output if Redundancy active has been selected, refer
to
Menu Input Extras section.
Setting
Characteristic
4 mA ... 20 mA
unlimited
Characteristics
4 mA ... 20 mA (NE 43)
4 mA ... 20 mA limited
Characteristic
0 mA ... 20 mA
Upscale
approx. 22 mA
(cannot be distinguished from
value exceeding end value)
approx. 21.5 mA approx. 21.5 mA
Downscale
0 mA
(cannot be distinguished from
value below start value)
2.0 mA
0 mA
(cannot be distinguished
from measurement of
the start value)
Hold last measured value before the fault
Upscale/
downscale
only makes
sense for RTD
approx. 22 mA
in the case of lead short circuit
(cannot be distinguished from
value exceeding end value)
approx. 21.5 mA
in the case of
lead short circuit
approx. 21.5 mA
in the case of lead short
circuit
0 mA
in the case of lead breakage
(cannot be distinguished from
value below start value)
2.0 mA
in the case of
lead breakage
0 mA
in the case of lead
breakage
(cannot be distinguished
from measurement of
the start value)