1756-IT6I Allen-Bradley PLC 6 Channel Isolated Thermocouple Input Module(20 Pin) New

Number of Inputs

6 individually isolated channels

Module Location

1756 ControlLogix Chassis

Backplane Power Requirements

(No external power requirements)

250mA @ 5.1V dc & 125mA @ 24V dc (4.3W)

Power Dissipation within Module

Thermal Dissipation

4.3W

14.66 BTU/hr

Input Ranges

-12mV to +78mV

-12mV to +30mV (high resolution range)

Supported Thermocouple Types

-12mV to +78mV

-12mV to +30mV (high resolution range)

Supported Thermocouple Types

B, C, E, J, K, N, R, S, T

Linearization based on ITS-90

Resolution

16 bits (1.4uV typical)

0.7uV/count on high resolution range

Data Format

Integer mode (2s complement)

Floating point IEEE 32 bit

Input Impedance

>10MW

Open Circuit Detection Time

Positive full scale reading within 2s

Overvoltage Protection

120V 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 25°C

Calibration Interval

Better than 0.1% of range

12 months typical

Accuracy (Cold Junction Sensor)

Local CJ Sensor Uncertainty

Remote CJ Sensor

From +/-0.3 up to +/-3.2°C, depending on channel

+/-0.3°C

Input Offset Drift with Temperature

0.5μV/degree C typical

Gain Drift with Temperature

65 ppm/degree C typical (80 ppm maximum)

Module Error over Full Temp. Range

0.5% of range

Minimum Module Scan Time for all

Channels1 (Sample Rate)

25ms minimum floating point (millivolt)

50ms minimum floating point (temperature)

10ms minimum integer (millivolt)

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

RTB Screw Torque (NEMA)

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

Module Keying (Backplane)

Electronic

RTB Keying

User defined

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

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