PLC 8 Point Input Module 1771-IXHR

Overview

1771-IXHR is a high-resolution thermocouple/millivolt analog input module of the 1771 series, specially designed for PLC-5 control systems. It has 8 input channels, is suitable for thermocouple and millivolt signal input, and supports IPTS-68 standard and NBS MN-125 thermocouple linearization to ensure the accuracy of temperature signal conversion. The dimensions are 173.2mm×101.6mm×51.0mm and the weight is 0.4kg; the operating temperature range is – 40°C to 70°C, the storage temperature is – 40°C to 85°C, and it can adapt to harsh industrial temperature environments. The core is used for temperature and millivolt level signal acquisition in industrial scenarios.

FAQ

1.What types of thermocouples (such as J/K/T types) and millivolt signal ranges does the 1771-IXHR support?

The thermocouple types and millivolt signal ranges supported by 1771-IXHR have clear specifications:

1. Thermocouple type: It can be adapted to seven common types: B, E, J, K, R, S, and T, which can meet the adaptation needs of different thermocouples in most temperature monitoring scenarios in industrial scenarios.
2. Millivolt signal range: Supports ±100 millivolt input, and the signal input resolution reaches 1µV. Together with the module’s automatic calibration function, it can ensure the accuracy of millivolt-level signal collection and adapt to the signal collection needs of various millivolt-level sensors.

2.Do the 8 input channels of the 1771-IXHR support channel-to-channel isolation?

The 8 input channels of the 1771-IXHR do not support channel-to-channel isolation.

The module’s 8 input channels are floating differential inputs. Under this design, the channel can only form a differential signal acquisition loop with the module’s own reference point, rather than achieving electrical isolation between channels.

3.What is the specific input resolution of the 1771-IXHR module?

The 1771-IXHR module has clear and different input resolutions for thermocouple temperature input and millivolt signal input, as follows:

1. Thermocouple temperature input: The resolution is 0.1°C or 0.1°F. This accuracy, combined with the module’s own cold-junction compensation function (compensation range 0 – 60°C, accuracy ±0.5°C), can accurately adapt to the temperature signal collection of seven common thermocouples, including B, E, J, and K, meeting the needs for high-precision temperature monitoring in industrial scenarios.
2. Millivolt signal input: The resolution is 1µV, and the corresponding millivolt input range is ±100 millivolts. This high resolution ensures that weak signals from millivolt-level sensors are accurately captured, and combined with the module’s automatic calibration function, it can further reduce signal acquisition errors.