1756-IR6I Allen-Bradley PLC 6 Channel Isolated RTD Input Module(20 Pin) New

Number of Inputs

6 individually isolated channels

Module Location

1756 ControlLogix Chassi

Backplane Power Requirements

(No external power requirements)

250mA @ 5.1V dc & 125mA @ 24V dc (4.25W)

Power Dissipation within Module

Thermal Dissipation

4.3W

14.66 BTU/hr

Input Range

1-487W, 2-1000W, 4-2000W, 8-4020W

Resolution in Ranges

487W

1000W

2000W

4020W

Approximately 16 bits across each input range

7.7mW/count

15mW/count

30mW/count

60mW/count

Sensors Supported

Resistance 4-4020W

100, 200, 500, 1000W Platinum, alpha=385

100, 200, 500, 1000W Platinum, alpha=3916

120W Nickel, alpha=672

100, 120, 200, 500W Nickel, alpha=618

10W Copper

Data Format

Integer mode (2s complement)

Floating point IEEE 32 bit

Open Circuit Detection Time

Positive full scale reading within 5s with any combination of lost

wires, except input terminal B alone.

If input terminal B is lost by itself, the module reads a negative

full scale reading within 5s.

Overvoltage Protection

24V ac/dc maximum

Normal Mode Noise Rejection

60dB at 60Hz

Common Mode Noise Rejection

120dB at 60Hz, 100db at 50Hz

Channel Bandwidth

15Hz

Settling Time to 5% of Full Scale

<80ms

Calibrated Accuracy at 25oC

Calibration Interval

Better than 0.1% of range

12 months typical

Input Offset Drift with Temperature

10mW/degree C

Gain Drift with Temperature

50 ppm/degree C typical (90 ppm maximum)

Module Error over Full Temp. Range

0.54% of range

Module Scan Time for all Channels

(Sample Rate)

25ms minimum floating point (ohms)

50ms minimum floating point (temperature)

10ms minimum integer (ohms)

Module Conversion Method

Sigma-Delta

Isolation Voltage

Channel to channel

User to system

Optoisolated, transformer isolated

100% tested at 1700V dc for 1s, based on 250V ac

100% tested at 1700V dc for 1s, based on 250V ac

Module Keying (Backplane)

Electronic

RTB Screw Torque (NEMA)

7-9 inch-pounds (0.8-1Nm)

RTB Keying

User defined mechanical keying

RTB and Housing

20 Position RTB (1756-TBNH or TBSH)

Environmental Conditions

Operating Temperature

Storage Temperature

Relative Humidity

0 to 60°C (32 to 140°F)

-40 to 85°C (-40 to 185°F)

5 to 95% noncondensing

Screwdriver Width for RTB

5/16 inch (8mm) maximum

Cat. No.

Inputs/Outputs

Range

Resolution

Removable Terminal Block

1756-IR6I

6 individually isolated RTD inputs

1…487 W
2…1000 W
4…2000 W
8…4020 W

16 bits
1…487 W: 7.7 mW/bit
2…1000 W: 15 mW/bit
4…2000 W: 30 mW/bit
8…4020 W: 60 mW/bit

1756-TBNH
1756-TBSH

1756-IT6I

6 individually isolated thermocouple inputs
1 CJC

-12…78 mV
-12…30 mV

16 bits
-12...78 mV: 1.4 mV/bit
-12...30 mV: 0.7 mV/bit

1756-TBNH
1756-TBSH

1756-IT6I2

6 individually isolated thermocouple inputs
2 CJC

-12…78 mV (1.4 mV per bit)
-12…30 mV (0.7 mV per bit – high resolution range)

16 bits
-12...78 mV: 1.4 Vm/bit
-12...30 mV: 0.7 mV/bit

1756-TBNH
1756-TBSH