Appendix_a, Appendix a – Spectrum Controls 1769sc-IF8u User Manual

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Appendix A

1769sc-IF8U Specifications

This appendix lists the specifications for the 1769sc-IF8U Analog Input
module.

Electrical Specifications
1769sc-IF8U

Specification Description

Configuration

8 channels of thermocouple/voltage/current + 0 channels of RTD/Resistance inputs
6 channels of thermocouple/voltage/current + 1 channels of RTD/Resistance inputs
4 channels of thermocouple/voltage/current + 2 channels of RTD/Resistance inputs
2 channels of thermocouple/voltage/current + 3 channels of RTD/Resistance inputs

0 channels of thermocouple/voltage/current + 4 channels of RTD/Resistance inputs
Analog Multiplexed into one ADC

Input Modes

Temperature, voltage, current, RTD, resistance

Input Types

Thermocouple types J, K, T, E, R, S, B, N and C.

Voltage

types

+/-50 mV, +/-100 mV, 0-5 V, 1-5 V, 0-10 V, and +/-10 V

Current types 0-20 mA, 4-20 mA

RTD types Pt 385, Pt 3916, Ni 618, Ni 672, Cu 427

Res istance types 0-150 ohms, 0-1000 ohms, 0-3000 ohms

Fault detection

Open circuit detection, over-range and under-range error bits.
Open circuit detection time is equal to the channel update time.

CMRR

115 dB minimum at 50 Hz
115 dB minimum at 60 Hz

NMRR

85 dB minimum at 50 Hz
85 dB minimum at 60 Hz

Input Impedance

> 10M ohms for voltage, thermocouple, RTD, resistance inputs

250 ohms for current inputs

Common Mode Voltage

+/- 10V

Cali brated Accuracy

Linearization per ITS-90

Thermocouple Inputs

System accuracy at 25°C (10, 50, and 60 Hz filters):
Type J: +/- 0.6 degrees C
Type N (-210

C to -200C): +/- 1.2 degrees C

(-200

C to 1300C): +/- 1 degrees C

Type T (-270

C to -230C): +/- 5.4 degrees C

(-230

C to 400C): +/- 1 degrees C

Type K (-270

C to -225C): +/- 7.5 degrees C

(-225

C to 1370C): +/- 1 degrees C

Type E (-270

C to -210C): +/- 4.2 degrees C

(-210

C to 1000C): +/- 0.5 degrees C

Type C: +/- 1.8 degrees C

Type B: +/- 3.0 degrees C
Type S and R:

+/- 1.7 degrees C

System accuracy at 0-60°C (10, 50, and 60 Hz filters):
Type J: +/- 0.9 degrees C
Type N (-210

C to -200C): +/- 1.8 degrees C

(-200

C to 1300C): +/- 1.5 degrees C

Type T (-270

C to -230C): +/- 7.0 degrees C

(-230

C to 400C): +/- 1.5 degrees C

Type K (-270

C to -225C): +/- 10 degrees C

(-225

C to 1370C): +/- 1.5 degrees C

Type E (-270

C to -210C): +/- 6.3 degrees C

(-210

C to 1000C): +/- 0.8 degrees C

Type C: +/- 3.5 degrees C
Type B: +/- 4.5 degrees C
Type S and R:

+/- 2.6 degrees C

CJC accuracy

+/- 3.0 degrees C maximum

CJC Sensor accuracy

+/- 0.1 degrees C maximum