The HE693THM665 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.
Each channel can be individually configured for a specific type of sensor wire. There are 6 %I alarm bits and one setpoint alarm for each channel. Alarm setpoints are configured for each channel using 6 %AQ registers. An available feature on the isolated thermocouples is the use of external AD592 cold junction compensation.
| Power Consumption | 200mA @ 5VDC |
| Number of channels | 6 |
| Backplane Isolation | ±1500 VAC to PLC backplane |
| Channel Isolation | ±250V AC channel-to-channel |
| A/D Conversion Time | 5ms |
| Common Channel Points | NONE |
| Operating Temperature | 0 to 60°C (32 to 140°F) |
| Operating Mode | Self-Scan |
| I/O Points Required | 6%AI, 6%AQ, 16%I |
| Input Impedance | 1000M ohms @ < 100mV |
| Maximum Sustained Differential O/L | ±35V |
| Common Mode Rejection | >100dB |
| A/D Conversion Type | 18-bit integrating |
| Scan Rate | 40 channels per second |
| Open Thermocouple Response | Programmable Upscale or Downscale |
| Relative Humidity | 5% to 95% non-condensing |
| Resolution | 0.5°C, 0.5°F, 0.1°C, 0.1°F |
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