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HE693THM884

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SKU 2178118  UPC 0360515914767

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MSRP $3995

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Other Available Revisions for the HE693THM884 ABCDEFGHIJKLMNOPQRSTUVWXYZ

The HE693THM884 allows thermocouple temperature sensors to be connected to the PLC directly without the use of external signal processing such as transducers, transmitters, etc. All analog and digital processing of the thermocouple signal is performed on the module. This high-resolution module (0.1°C), can report values to the PLC I/O table in 0.5°C, 0.5°F, 0.1°C, or 0.1°F increments. The module has eight thermocouple channels assigned to 8 %AI input registers. There are 16 %I Alarm Bits, one open circuit alarm and one setpoint alarm for each channel. Alarm setpoints are set for each channel through 8 %AQ registers. Open circuit alarm bits for each channel correspond to the first eight successive%I bits, and the alarm setpoints for each channel correspond to the second eight successive %I bits.

Technical Specifications


Power Consumption 100mA @ 5VDC
Number of channels 8
Types Supported J, K
Input Range (Temp.) J: -210 to +760°C / K: -270 to +1372°C
Resolution 0.1°C
Accuracy Type J, Rated + / -1°C / -210 to +760°C
Accuracy Type K, Rated + / -1°C : -2°C / -100 to +1000°C : -200 to +1372°C
I/O Points Required 8%AI, 8%AQ, 16%I
Input Impedance >20Mohms
Maximum Sustained O/L +/- 35V
Common Mode Rejection >100dB
A/D Conversion Type 18-Bit Integrating
A/D Conversion Time 5 ms
Scan Rate 40 Channels per second
Operating Temperature 0 to 60°C (32 to 140°F)
Relative Humidity 5% to 95% non-condensing

Technical Information

Power Consumption 100mA @ 5VDC
Number of channels 8
Types Supported J, K
Input Range (Temp.) J: -210 to +760°C / K: -270 to +1372°C
Resolution 0.1°C
Accuracy Type J, Rated + / -1°C / -210 to +760°C
Accuracy Type K, Rated + / -1°C : -2°C / -100 to +1000°C : -200 to +1372°C
I/O Points Required 8%AI, 8%AQ, 16%I
Input Impedance >20Mohms
Maximum Sustained O/L +/- 35V
Common Mode Rejection >100dB
A/D Conversion Type 18-Bit Integrating
A/D Conversion Time 5 ms
Scan Rate 40 Channels per second
Operating Temperature 0 to 60°C (32 to 140°F)
Relative Humidity 5% to 95% non-condensing
  • Question: What is a HE693THM884? Answer: The HE693THM884 allows thermocouple temperature sensors to be connected to the PLC directly without the use of external signal processing such as transducers, transmitters, etc. All analog and digital processing of the thermocouple signal is performed on the module.
  • Question: What is the main power supply for the HE693THM884? Answer: The main power source for the HE693THM884 uses 100mA @ 5VDC which is connected to the PLC.
  • Question: How can I minimize capacitive loading and noise? Answer: Shielded, twisted-pair extension wiring offers the best noise immunity. 
  • Question: Where should the shields be connected to? Answer: If shielded wiring is used, a good earth ground connection is critical. Terminals 19and/or 20 may be used as the shield ground point.
  • Question: Can I change the number of channels or the voltage on this device? Answer: Yes, you can. This is an 8 channel unit.
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