The3703Eis a high-reliability Isolated Analog Input module specifically designed for the Triconex Triple Modular Redundant (TMR) safety system.It provides 16 fully isolated channels, ensuring that field-side electrical interference or ground loops do not compromise the integrity of the safety controller.
Technical Specifications
Input Configuration: 16 Isolated Points
Voltage Selection: 0-5 VDC or 0-10 VDC (+6% overrange)
Current Measurement: 0-20 mA via external shunt (250 Ω for 5V; 500 Ω for 10V)
Sampling Rate: 50 ms Input Update Rate
Resolution: 12 bits
System Accuracy: < 0.15% of Full Scale Range (FSR) from 0° to 60° C
Common Mode Rejection: -90 dB @ 60Hz / -100 dB @ DC (Minimum)
Common Mode Range: ±200V Peak
Input Impedance: 30 MΩ (DC) minimum, even during Power-Off
Overrange Protection: 150 VDC or 115 VAC continuous
Noise Filtering: -17 dB @ 60Hz; -23 dB @ 120Hz
Physical Weight: 4 Kg (Shipping weight)
Common FAQ
How does the isolation in the 3703E protect the system?Unlike standard modules, the3703Efeatures point-to-point and leg-to-leg isolation, preventing high-voltage transients (up to 200V peak) in the field from damaging the internal Tricon backplane or affecting adjacent channels.
Can I use this module for 4-20mA loop signals?Yes, by utilizing a 250 Ω or 500 Ω precision shunt resistor at the termination assembly, the3703Eaccurately converts current signals into the required 0-5V or 0-10V range for processing.
