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AB 1746-NT4 , SLC 500 Thermocouple/MV Analog Input Module , 16 Bits In, 14 Bits Out
Technical Specifications for 1746-NT4
Manufacturer
Rockwell Automation
Brand
AB
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
Step Response
60 milliseconds in, 2.5 milliseconds out
Backplane Power Consumption
0.8W maximum (0.3W @ 5V dc, 0.5W @ 24V dc)
Channels
4 backplane isolated
Open Circuit Detection
Zero; Upscale; Downscale
UPC
10612598172693
I/O Chassis location
Any slot except Slot 0
UPC
10662468165911
Operating Temperature
0 to 60 degrees Celsius
Storage Temperature
-40 to 85 degrees Celsius
A/D Conversion method
Sigma-delta modulation
About 1746-NT4
The Allen Bradley 1746-NT4 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. 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. It has 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. The 1746-NT4 module 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. The 1746-NT4 module has 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. It has a backplane power consumption of 0.3 Watts at 5 Volts DC and 0.5 Watts at 2 Volts DC, a 16-bit converter resolution, and a 12 to 300 millisecond Step response at 95%. It has a bandwidth of 2.62 - 65.5 Hertz and a 26 millisecond - 1.2 second update period and uses sigma-delta modulation for A/D conversion. It can be installed in any slot except slot 0 of the SLC 500 chassis. It uses two wires per terminal with a maximum wire size of 2.5 millimeters (14 AWG) and 25 ohms maximum cable impedance. For Thermocouple inputs, use shielded twisted thermocouple extension wire; for mV inputs, Belden 8761 or equivalent wire must be used.
The 1746-NT4 is an AB module used with Thermocouple sensors and mV signals. This module belongs to analog input module category which belongs to the SLC 500 product family.
It features Eight (8) Thermocouple inputs with each channel supporting a wide variety of Thermocouple types such as J, K, T, E, S, R, B and N. Compatible mV signals include +/- 50 mV and +/- 100 mV. Each input channel is built with broken sensor detection may indicate a shorted or open circuit. There are configurable settings when an open circuit is detected such as Zero, Upscale and Downscale. When Zero is configured, the module’s reading is forced to Zero (0). When set to Downscale, the module’s reading is forced to the lowest reading while Upscale forces the reading to the maximum reading. These settings are helpful as it may be used to quickly diagnose the state of each channel aside from the visible LED indicators for each channel. The fault reaction settings must be based on the fail-safe operation of the process. These settings are configured with the use of RSLogix 500 Programming software. Individual channel filters may also be set to fine tune the module’s behavior to input. Channel filters are set to minimize the effect of electrical noise and AC lines that may cause fluctuations and erratic readings. Selectable filter frequencies are 250 Hz which offers minimize noise filtering, 60 Hz, 50 Hz and 10 Hz noise filtering. If a Cold Junction Compensation (CJC) input is selected, input filter is ignored.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Importer,Exporter,Trading Company,Seller
Year Established:
2010
Total Annual:
1000000-5000000
Employee Number:
100~120
Ecer Certification：
Verified Supplier
Shenzhen Wisdomlong Technology CO.,LTD Mainly engaged in automation parts, PLCS,DCS,sensors, relays, dirves,encoder, servo drive,soft starter,touch screen,instrument,process control,electric transmission and factory automation aspects of the project design,software programming,technical service and ... Shenzhen Wisdomlong Technology CO.,LTD Mainly engaged in automation parts, PLCS,DCS,sensors, relays, dirves,encoder, servo drive,soft starter,touch screen,instrument,process control,electric transmission and factory automation aspects of the project design,software programming,technical service and ...
