Rockwell Automation 1771-N SERIES High Resolution Analog Module User Manual - Manual (Page 86)

Specifications A–6
Publication 1771ĆUM127B-EN-P - December 2002
±5V Inputs ±10V Inputs 4Ć20mA Sourcing Input
Input Range +5.5V (±22mA with resistor) +10.5V (±42mA with resistor) 0.1Ć21.0mA
Input Resolution 168µV/bit (0.7µA/bit) 15 bits with sign bit 330µV/bit 15 bits with sign bit 330nA/bit 16 bits unipolar
Input Impedance > 10 MΩ > 10 MΩ 300Ω (maximum)
Loop Power Voltage Source
20 to 30V dc (0 to 20mA range)
current limited to < 29mA
Input Overvoltage Protection 140V ac rms continuous 140V ac rms continuous 24V dc continuous
Open Input Detection upscale upscale downscale
Time to Detect Open Input 5s (maximum) 9s (maximum) 5s (maximum)
Open Input Detection Leakage Current < 1.0µA (maximum) < 1.0µA (maximum)
Normal Mode Rejection 50/60Hz 50dB / 60dB (minimum) 50dB / 60dB (minimum) 50dB / 60dB (minimum)
Common Mode Rejection (60Hz) 150dB (typical) 150dB (typical) 150dB (typical)
Offset Drift ±20µV/ o C (±85nA/°C with resistor) ±30 µV/ o C ±200nA/°C
Gain Drift ±35 ppm/ o C (±55ppm/°C with resistor) ±35 ppm/ o C ±95 ppm/ o C
Input Bandwidth 9Hz 9Hz 9Hz
Update Time (per module) 25ms (maximum) 25ms (maximum) 25ms (maximum)
SettlingTime to within 0.1% of Full Scale 125ms (maximum) 125ms (maximum) 125ms (maximum)
NonĆlinearity 0.02% of full range (maximum) 0.02% of full range (maximum) 0.02% of full range (maximum)
Accuracy with Calibration (includingtypical
nonĆlinearity, gain,and offset) worst case
0.01% of full range @ 25 o C
0.05% of full range @ 25 o C
0.01% of full range @ 25 o C
0.05% of full range @ 25 o C
0.025% of full range @ 25 o C
0.05% of full range @ 25 o C
Calibration Values 0.0000V / 5.0000V 0.0000V / 10.0000V 1.000mA / 21.000mA
Underrange Threshold 0.8V dc (3.2mA) -10.4V dc 3.2mA
Overrange Threshold 5.2V dc (20.8mA) +10.4V dc 21.0mA
Rate Alarm Value minimum (0.04% FSR)
maximum (50% FSR)
1.6mV (6.4µA) per second
2.0V (8.0mA) per second
8mV per second
10V per second
6.4µA per second
8mA per second
ScalingPoints → Default ScalingValues 1 1.0/5.0V → 1000/5000 -10 / +10V → -10000/+10000 4.0/20.0mA → 4000/20000
+10V Outputs 4-20mA (0-25mA) Outputs 0-50mA Outputs
Output Range +10.4V into an open circuit 0Ć25.0mA 0Ć50.0mA
Output Resolution 1.32mV/bit 13 bits with sign bit 3.2µA/bit 13 bits unipolar 6.4µA/bit 13 bits unipolar
Output Impedance 1.0Ω maximum > 1 MΩ > 1 MΩ
Output Drive Capability 1KΩ or larger (10mA maximum)
20.0mA maximum into 0Ć1kΩ
25.0mA maximum into 0Ć700Ω
20.0mA maximum into 0Ć1kΩ
25.0mA maximum into 0Ć700Ω
50.0mA maximum into 0Ć300Ω 2
Output Overvoltage Protection 140V ac rms continuous 140V ac rms continuous 140V ac rms continuous
Offset Drift ±400 µV/°C ±1.0µA/ o C ±1.0µA/ o C
Gain Drift ±50 ppm/ o C ±50 ppm/ o C ±50 ppm/ o C
Update Time (per module) 25ms maximum 25ms maximum 25ms maximum
D/A Converter Ċ SettlingTime to within
10% of Full Scale into a Resistive Load
5ms 500µs 500µs
Accuracy with Calibration (Includingtypical
NonĆlinearity, Gain, and Offset) worst case
0.01% of full range @ 25 o C
0.08% of full range @ 25 o C
0.01% of full range @ 25 o C
0.08% of full range @ 25 o C
0.01% of full range @ 25 o C
0.08% of full range @ 25 o C
Calibration Values 0.0/10.0V dc 0.5mA / 22.0 mA 1.0mA / 50.0 mA
RampingValue minimum (1% FSR)
maximum (200% FSR)
0.2V per second
40.0V per second
0.16mA per second
32.0mA per second
0.40mA per second
80.0mA per second
ScalingPoints → Default ScalingValues 1 -10 / +10V → -10,000/+10,000 4.0 / 20.0mA → 4,000/20,000 10.0 / 50.0mA → 1,000/5,000
1 Values shown are applicable when usingtwo's complement data format.
2 See deratingcurves for various temperature, current and load conditions.