Rockwell Automation 1769-OF8V CompactLogix Analog Output Module - Manual (Page 34)

34 CompactLogix Analog Output Module
Rockwell Automation Publication 1769-IN089A-EN-P - March 2011
Output Specifications 1769-OF8C and 1769-OF8V
Attribute 1769-OF8C and 1769-OF8V
Analog normal operating ranges
(1)
(1769-OF8C): 0…20 mA, 4…20 mA
(1769-OF8V): ± 10V dc, 0…10V DC, 0…5V DC, 1…5V DC
Full Scale analog ranges
(1)
(1769-OF8C): 0…21 mA, 3.2 to 21 mA
(1769-OF8V): ± 10.5V dc, -0.5…10.5V DC, -0.5…5.25V DC,
0.5…5.25V DC
Number of outputs 8 single-ended
Bus current draw, max (1769-OF8C) 145 mA at 5V DC
185 mA at 24V DC
(2)
Bus current draw, max (1769-OF8V) 145 mA at 5V DC
135 mA at 24V DC
Heat dissipation (1769-OF8C): 2.69 total W (all points - 21 mA into 250
Ω - worst
case calculated)
(1769-OF8V): 2.16 total W (all points - 10.5V into 1 k
Ω - worst
case calculated)
Digital resolution across full range (1769-OF8C): 16 bits (unipolar)
4…20 mA: 15.59 bits, 0.323 µA/bit
0…20 mA: 15.91 bits, 0.323 µA/bit
(1769-OF8V): 16 bits plus sign (bipolar)
±10V dc: 15.89 bits, 330 ?V/bit
0 to +5V dc: 13.89 bits, 330 µV/bit
0 to +10V dc: 14.89 bits, 330 µV/bit
+1 to +5V dc: 13.57 bits, 330 µV/bi
Conversion rate (all channels) max. 5 ms
Step response to 63%
(3)
<2.9 ms
Resistive load on current output
(1769-OF8C) 0…500
Ω (includes wire resistance)
Max inductive load (1769-OF8C) 0.1 mH
Load range output (1769-OF8V) > 1 k
Ω at 10V DC
Max capacitive load (1769-OF8V) 1 µF
Field calibration None required
Overall accuracy
(4)
(1769-OF8C): ±0.35% full scale at 25 °C (77 °F)
(1769-OF8V): ±0.5% full scale at 25 °C
Accuracy drift with temperature (1769-OF8C): ±0.0058% FS per °C
(1769-OF8V): ±0.0086% FS per °C
Output ripple
(5)
range 0…50 kHz
(referred to output range)
±0.05%