1746-NT4 Allen Bradley

1746-NT4 Allen Bradley

Is a Thermocouple/mV Input Module for an SLC 500 system. It provides all SLC 500 processors with a digitally converted thermocouple or millivolt (mV) analog data, received and stored in its image table.

Features:

• It does not require any external power supply as it receives 5 Volts DC and 24 Volts DC power from the SLC 500 power supply through its backplane.
• Two cold-junction compensation (CJC) sensors instead of offset voltages to retain thermocouple input signal accuracy.
• Block transfers are required by this module in a remote I/O configuration.
• It interfaces to thermocouple types J, K, T, E, R, S, B, and N, and accepts direct +/-50 mV and +/-100 mV analog input signals.
• Auto calibrates at power-up and whenever a channel is enabled.
• It has 5 green LED status indicators, one for module status and one for each of the four channels.
• 4 backplane isolated input channels.
• It has a backplane current consumption of 60 mA at 5 Volts DC and 40 mA at 24 Volts DC.

Specifications:

• Manufacturer Rockwell Automation
• Brand Allen-Bradley
• Part Number/Catalog No. 1746-NT4
• Series SLC 500
• Inputs 4
• Module Type Thermocouple/mV Analog Input Module
• Backplane Current (5 Volts) 60 milliamps
• No. of Inputs Four (4)
• Backplane Current (24 Volts) 55 milliamps
• Compatible Thermocouple Sensors J, K, T, E, S, R, B and N
• Update Time 26 milliseconds-1.2 seconds
• Compatible miliVolt signal +/- 50 mV and +/- 100 mV
• Resolution 16 bits in, 14 bits out
• Backplane Current 0.06 mA @ 5VDC; 0.04 mA @ 24VDC
• Backplane Power Consumption 0.8W maximum (0.3W @ 5V dc, 0.5W @ 24V dc)
• Step Response 60 milliseconds in, 2.5 milliseconds out
• Open Circuit Detection Zero; Upscale; Downscale
• Channels 4 backplane isolated
• I/O Chassis location Any slot except Slot 0
• UPC 10612598172693
• Operating Temperature 0 to 60 degrees Celsius
• UPC 10662468165911
• Storage Temperature -40 to 85 degrees Celsius
• A/D Conversion method Sigma-delta modulation