Rockwell Automation 1769-OF4CI CompactLogix 1769-OF4CI Module - Manual (Page 23)

Compact 1769-OF4CI Isolated Analog Output Module 23
Rockwell Automation Publication 1769-IN075B-EN-P - August 2010
Specification 1769-OF4CI
Analog Normal Operating Ranges
(1)
0 to 20 mA, 4 to 20 mA
Full Scale Analog Ranges
(1)
0 to 21 mA, 3.2 to 21 mA
Number of Outputs 4 isolated differential
Bus Current Draw (max.) 5V, 165mA
24V, 110mA
Heat Dissipation 2.68 Total Watts (All points - 21 mA into
250
Ω - worst case calculated.)
Digital Resolution Across Full Range 16 bits (unipolar)
+4 to +20 mA: 15.59 bits, 0.323 µA/bit
0 to +20 mA: 15.91 bits, 0.323 µA/bit
Conversion Rate (all channels) max. 110 ms
Step Response to 63%
(2)
<2.9 ms
Resistive Load on Current Output 0 to 500
Ω (includes wire resistance)
Max. Inductive Load 0.1 mH
Field Calibration None required
Overall Accuracy
(3)
±0.35% full scale at 25°C
(1) The over- or under-range flag will come on when the normal operating range (over/under) is exceeded.
The module will continue to convert the analog output up to the maximum full scale range. The flag
automatically resets when within the normal operating range unless configured to latch.
(2) Step response is the period of time between when the D/A converter was instructed to go from
minimum to full range until the device is at 63% of full range.
(3) Includes offset, gain, drift, non-linearity and repeatability error terms.