User guide

A-4 MicroLogix™ 1200 Analog Combo Module (4Ch IN / 4Ch Out)
User’s Manual Pub. 0300247-01 Rev. C
Specification Value
Current Inputs System accuracy at 25° C (4 and 17 Hz
filters):
± 20 uA maximum for 0-20 mA inputs
± 20 uA maximum for 4-20 mA inputs
System accuracy at -20-60°C (4 and 17 Hz
filters):
± 50 uA maximum for 0-20 mA inputs
± 50 uA maximum for 4-20 mA inputs
Input Repeatability
Input Repeatability (at 25C)
4Hz Filter 17Hz Filter 62 and 470Hz Filters
typical values
8
Thermocouples
Type J ± 0.3 °C ±0.3 °C Not Recommended
Type K ± 0.4 °C ±0.4 °C Not Recommended
Type T ± 0.3 °C ±0.3 °C Not Recommended
Type E ± 0.3 °C ±0.3 °C Not Recommended
Voltage Inputs ± 1 mV ± 2 mV ± 4 mV
Current Inputs ± 2 µA ± 2 µA ± 6 µA
Output Specifications
Specification Description
Number of Outputs 4 channels of current or voltage
Accuracy - Voltage Outputs System accuracy at 25° C: ± 20 mV
maximum
System accuracy at -20-60°C: ± 50 mV
maximum
Accuracy - Current Outputs System accuracy at 25° C: ± 50 uA
maximum
System accuracy at -20-60°C: ± 75 uA
maximum
Output Resolution
Voltage Output 400µV per bit average when using RAW
format in ±10V range and 0-10V range
185µV per bit average when using RAW
format in 0-5 or 1-5V ranges
Current Output 380nA per bit when using RAW format for
all current ranges
Differential Nonlinearity 1 LSB (see resolution for LSB size)
Output Ripple <15mV ripple for voltage or current
Output Impedance Current: >1Megohm, Voltage: <1 ohm
(MRD)
Output Load Current: 0 ohm min, 500 ohm max,
Voltage: >=1k ohm at 10V output (10 mA),
includes wire resistance.
8
These filters do not reject 50/ 60 Hz. Repeatability for these filters is strongly dependent on how much 50/60Hz noise is in the
system.