1756-OF8I,ALLEN BRADLEY

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Electrical

Input, currentYes
Input, voltageYes
Input, resistorNo
Input, resistance thermometerNo
Input, thermocoupleNo
Input signal, configurableYes
Output, currentNo
Output, voltageNo
Output signal configurableNo
Analogue inputs configurableYes
Analogue outputs configurableNo
Type of electric connectionScrew-/spring clamp connection
Output range-10…10V, 0…10V, 0…5V, 0…20 Ma
Module keyingElectronic, software configurable
Module error over full temperature range0.1 %
Module conversion methodR-Ladder DAC, monotonicity with no missing codes
Open circuit detectionCurrent output = Yes
Drive capabilityCurrent output = 0...1000 Ω, Voltage output =>1000 Ω
Short circuit detectionVoltage output = Yes
Data formatIEEE 32-bit floating point
Wire category2 - on signal ports
Overvoltage protection±30V DC (voltage/current)
Settling time<2 ms to 95% of final value with resistive loads
Total backplane powerVoltage mode = 6.3 W, Current mode with 250 Ω loads = 6.3 W, Current mode with 500 Ω loads = 7.6 W, Current mode with 750 Ω loads = 9.2 W, Current mode with 1000 Ω loads = 10.2 W
Module scan time1 ms minimum
Thermal dissipationVoltage mode = 18.4 BTU/hr, Current mode with 250 Ω loads = 18.4 BTU/hr, Current mode with 500 Ω loads = 19.8 BTU/hr, Current mode with 750 Ω loads = 22.2 BTU/hr, Current mode with 1000 Ω loads = 22.9 BTU/hr
Current draw200 mA @ 5.1V, Voltage or current mode with 250 Ω loads = 220 mA @ 24V, Current mode with 500 Ω loads = 275 mA @ 24V, Current mode with 750 Ω loads = 340 mA @ 24V, Current mode with 1000 Ω loads = 385 mA @ 24V
InputsEight isolated channels - any combination of voltage or current mode
Power dissipationVoltage mode: 5.4 W (18.4 BTU/hr), Current mode with 250 Ω loads: 5.4 W (18.4 BTU/hr), Current mode with 500 Ω loads: 5.8 W (19.8 BTU/hr), Current mode with 750 Ω loads: 6.5 W (22.2 BTU/hr), Current mode with 1000 Ω loads: 6.7 W (22.9 BTU/hr)
Resolution16 bit, ±10.5V (0.32 mV/count), 0...10.5V (0.16 mV/count), 0...5.25V (0.08 mV/count), 0...21 mA (0.32 μA/count)
Wire size0.33...2.1 mm² (22...14 AWG) solid or stranded shielded copper wire, rated at 90 °C (194 °F) or greater, 1.2 mm (3/64 in.) insulation maximum
Calibrated accuracy0.05% @ 25 °C (77 °F)
Suitable for safety functionsNo
Output impedance46 Ω (Current output)

Environmental

Surrounding air temperature, max60 °C
North American temperature codeT4
EmissionsIEC 61000-6-4
ESD immunity6 kV contact discharges, 8 kV air discharges
EFT/B immunity±4 kV at 5 kHz on signal ports
Relative humidity5...95% noncondensing
Conducted RF immunity10V rms with 1 kHz sine-wave 80% AM from 150 kHz...80 MHz
Surge transient immunity±2 kV line-earth (CM) on shielded signal ports
Operating temperature0 to 60 °C
Radiated RF immunity10 V/m with 1 kHz sine-wave 80% AM from 80...2000 MHz, 10 V/m with 200 Hz 50% pulse 100% AM @ 900 MHz, 10 V/m with 200 Hz 50% pulse 100% AM @ 1890 MHz, 3 V/m with 1 kHz sine-wave 80% AM from 2000...2700 MHz
Nonoperating temperature-40 °C

Mechanical

RTB keyingUser-defined mechanical
Vibration2 G @ 10...500 Hz
ShockOperating: 30 G, Non operating: 50 G
Slot width1

Power

Isolation voltage250V (continuous), reinforced insulation type, outputs to backplane, 250V (continuous), basic insulation type, output to output

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