TRICONEX DI3301S2 Digital input module

Specific Parameters

Electrical Parameters
Supply Voltage: 5V DC ±5% (provided by Tricon CX backplane)
Channel Configuration: 8-channel differential digital input, each channel independently isolated
Signal Types:
Dry Contact: Minimum excitation current 1mA (24V DC), contact resistance ≤1kΩ
Active Signal: 24V DC (high level 18-30V DC, low level 0-5V DC)
Response Time: ≤1ms (signal edge detection)
Isolation Level: 2.5kV AC between channels (1 minute), 5kV AC between channels and system (1 minute)
Protection Functions: Overvoltage protection (≤35V DC), reverse polarity protection, short circuit protection
Diagnostic Circuit: Built-in open/short circuit detection circuit for each channel
Power Consumption: ≤6W under normal operation
Environmental Parameters
Operating Temperature: -40°C to 70°C
Storage Temperature: -40°C to 85°C
Relative Humidity: 5% to 95% (non-condensing, no dew formation)
EMC Immunity: Compliant with EN 61326-1 (industrial grade), IEC 61000-4-2/4/6
Vibration Resistance: 10-500Hz, 10g acceleration (compliant with IEC 60068-2-6)
Shock Resistance: 30g acceleration, 11ms duration (compliant with IEC 60068-2-27)
Mechanical Parameters
Dimensions: 32mm (W) × 130mm (H) × 190mm (D)
Weight: Approximately 420g
Mounting Method: 35mm standard DIN rail (compliant with EN 60715)
Protection Class: IP20 (module itself)
Housing Material: Flame-retardant aluminum alloy (UL 94 V-0 grade)
Terminal Type: Spring-loaded crimp terminals (compatible with 14-22 AWG wires)

Product Performance

DI3301S2 adopts a triple modular redundant signal acquisition and voting circuit. Each input signal is synchronously collected through three independent channels and logically voted, with a signal recognition accuracy of 100%, completely avoiding single-point fault risks. The full-channel independent isolation design combined with a differential input structure provides a common mode rejection ratio ≥120dB, effectively resisting strong electromagnetic interference and ground loops in industrial sites.

Integrated with comprehensive self-diagnosis functions, it can real-time detect channel open circuits, short circuits, overvoltage, and module power abnormalities, with a fault diagnosis coverage rate ≥99.9% and a fault response time ≤1ms. Fault status is fed back through dual channels of dual-color LED indicators (green for normal, red for fault per channel) and the system bus. It supports online configuration of signal types (dry contact/active) and filtering time (0.1ms-100ms adjustable), enabling parameter configuration without shutdown.

Seamlessly compatible with Tricon CX series controllers, the data transmission delay is ≤3ms, meeting the real-time requirements of safety interlocks. The mean time between failures (MTBF) is ≥350,000 hours, complying with the SIL 3 safety integrity level requirements.

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