Honeywell TC-IDX081 Diagnostic Discrete Input Module

Technical Specifications:

• Number of Points: 8 (4 points/common)
• Nominal Input Voltage: 120 VAC
• On-State Voltage Range: 79-132 VAC, 47-63 Hz
• Off-State Voltage (Maximum): 20 V
• On-State Current (Minimum): 5 mA @ 74 V, 47-63 Hz
• Off-State Current (Maximum): 2.5 mA
• Diagnostic Functions:
  • Open Wire Detection
  • Loss of Power Detection
  • Current Leak Detection (1.5 mA minimum)
  • Transition Range: 46 to 85 VAC
• Leakage Resistor Values:
  • P/S Voltage: 100VAC ±10%, 110VAC ±10%, 115VAC ±10%, 120VAC ±15%
  • Leakage Resistor (Rleak): 43KΩ, 47KΩ, 51KΩ (½ W, 5% tolerance)
• Short/Inrush Current: 250 mA peak (decaying to <37% in 22 ms, without activation)
• Input Impedance (Maximum): 12KΩ @ 60 Hz
• Input Delay Time:
  • Off to On: 1 ms and 2 ms (programmable)
  • On to Off: 9 ms and 18 ms (programmable), 8 ms maximum plus filter time
• Power Dissipation: 4.5 W
• Isolation Voltage:
  • Channel to Channel: Tested at 2546 VDC for 1s
  • User to System: Tested at 2546 VDC for 1s
• Nominal Input Current:
  • 120 VAC: 11 mA @ 50 Hz
  • 120 VAC: 13 mA @ 60 Hz
• Connection: TC-TBNH 20-position terminal block for easy wiring.

FAQ:

1. What is the function of the diagnostic features on this module?
   • The TC-IDX081 offers open wire, loss of power, and current leak detection, which helps in identifying issues like faulty wiring, power supply loss, and minor leakage currents before they affect the system’s performance.
2. How do I calculate the leakage resistor for my system?
   • You can use the provided formula for leakage resistor values based on your field-side power supply voltage, ensuring it is within the recommended range to avoid excessive leakage current.
3. What is the input delay time range on this module?
   • The input delay time for off-to-on transitions is programmable between 1 ms and 2 ms, while on-to-off transitions have a programmable range of 9 ms to 18 ms, with a maximum of 8 ms plus filter time.
4. What terminal blocks are used for connection?
   • The TC-IDX081 module uses the TC-TBNH 20-position terminal block for easy and secure wiring.

For more detailed information, please check official datasheet: C200-introduction