Rockwell Automation 937CU-AISTR-DC1 Strain Gauge Converter Installation Instructions - Manual (Page 36)

Selected setting 0 - 20 mA (b)
This setting converts the measured value 0 into 0, the span (see section 7.7.1) is converted into
20 mA, interim values are calculated proportionally.
Values below the measured value 0 cannot be evaluated (output 0 mA). If the span is exceeded, the
output current increases linearly to a maximum of 20.5 mA (102.5 % of the measurement range).
Further increases cannot be evaluated (output 20.5 mA).
Fault current
The following table shows what the current output is during a fault, depending on the selected setting:
Setting
Characteristic
20.20 -/+mA Characteristic
4 - 20 NE 43 Characteristic
12.20 -/+mA Characteristic
0 - 20 mA (b)
Min
(downscale)
-21.5 mA 2.0 mA -21.5 mA
0 mA
(cannot be
distinguished from
measurement
≤ 0)
Max
(upscale)
+21.5 mA 21.5 mA +21.5 mA 21.5 mA
Hold last value before the fault
Up/down in the case of Err Cell: downscale; in all other cases: upscale
20.5
20.0
0
0 100 % = span 102.5 %
mA
Measured
value
Bul. 937
C Strain Gauge Converter Installation Instructions
34