HE693RTD660 Isolated RTD Modules GE

The Horner APG Isolated Resistance Temperature Detector (RTD) Input Modules allow RTD temperature sensors to be directly connected to the PLC without external signal processing (transducers, transmitters,
etc.). All analog and digital processing of the RTD signal is performed on the module. These backplaneisolated (or bus-isolated) modules have programmable resolutions in increments of 0.05oC, 0.05oF, 0.1oC, 0.1oF, 0.5oC, 0.5oF. The module features six channels whose temperature values are reported to  the 6 %AI input registers. There are 6 %I alarm bits and one setpoint alarm for each channel. Alarm setpoints are configured for each channel using 6 %AQ registers. All modules feature support for the following RTD types: PT-100 (platinum, 100W at 0°C), Ni-120 (nickel, 120W at 0°C), Cu-10 (Copper, 10W at 25°C), Pt-1000 (platinum, 1000W at 0°C), and TD5R Silicon (Microswitch).
There are three versions of the Horner APG Isolated RTD Input Module: HE693RTD660, HE693RTD666, and HE693RTD665. The HE693RTD660 is a six-channel module with 1500V AC isolation to the PLC backplane and 5V AC isolation channel-to-channel. The HE693RTD666 is equivalent to the HE693RTD660 with the addition of a 60Hz notch filter. The HE693RTD665 is also equivalent to the HE693RTD660 with the addition of a 50Hz notch filter. The purpose of these filters is to eliminate noise generated by power lines in the United States (60Hz) and Europe (50Hz).

HE693RTD660

There are three reference types used with the RTD660/666/665: %I, %AI, and %AQ. The 6 %AI registers report the RTD temperature in the selected format. The 6 %AQ registers can be used to configure the alarm setpoint registers. The 16 %I bits display the alarm conditions. The first six %I are set while the temperature is above the value specified in the respective %AQ. The setpoint is in the same format as the temperature. The ninth through the fourteenth %I bits are set if the respective RTD is over the maximum readable temperature or is open.

See the Alarms table above for more details. Example: Module Configuration is %I1-16, %AI1-6, %AQ1-6 with temperature format = 0.50C. %AQ1 (channel 1 setpoint) is set to a value of 200 (1000C). %I1 will remain set (1) while the temperature is above 1000C and %I9 will remain open (0) unless the temperature reaches the maximum readable value or is open. In other words, if %AI1 > %AQ1, then %I1 = 1 and %I9 = 0 unless open or maximum readable value is reached.