1. Product Introduction

2. Technical Specifications

• Channels: 16 independent isolated digital input channels

• Input Type: Dry contact / wet contact (24 VDC nominal)

• Input Voltage Range: 18–30 VDC (logic high: ≥18 VDC; logic low: ≤5 VDC)

• Isolation Voltage:

  • Channel to backplane: 1500 VAC, 1 minute

  • Channel to channel: 500 VAC, 1 minute

• Input Current: ≤10 mA per channel (24 VDC)

• Response Time: ≤5 ms (typical)

• Power Supply: 24 VDC ±10% (supplied via DCS backplane)

• Max Power Consumption: ≤4 W

• Operating Temperature: 0 °C to +55 °C

• Storage Temperature: −20 °C to +70 °C

• Relative Humidity: 5%–95%, non‑condensing

• Key Features: Hot‑swappable; fail‑safe (default low on power/communication loss)

• LED Indicators: Green (PWR), Red (FAULT), Yellow (CH1–CH16 status)

• Physical: Single‑slot module; approx. 220 × 30 × 250 mm, 1.1 kg

3. Application Fields

• Power Generation: Thermal/nuclear power plant auxiliary signal monitoring (e.g., valve position, pump status, interlock contacts).

• Petrochemical: On‑off status monitoring of solenoid valves, pressure switches, and emergency shutdown (ESD) contacts.

• Water Treatment: Status detection of dosing pumps, drain valves, and mechanical equipment.

• General Process Industries: Metallurgy, pulp & paper, cement, and other manufacturing facilities requiring high‑reliability discrete input monitoring.

4. Installation & Wiring

1. Pre‑installation: Ensure the DCS cabinet is de‑energized before installation.

2. Module Insertion: Insert the module into an available I/O slot; the backplane connector engages automatically.

3. Hot Swap: Verify the system permits online replacement (Ovation/WDPF compatible).

4. Field Wiring:

   • Connect field dry/wet contacts to IN and COM terminals per channel.

   • Maintain isolation between field wiring and backplane cabling.

5. Secure Connections: Avoid over‑torqueing terminals; ensure wiring is neat and secure.

5. Operation & Diagnostics

• Power‑on: Green PWR LED illuminates when 24 VDC is supplied.

• Channel Status: Yellow LED = input ON (logic high); LED off = input OFF (logic low).

• Fault Indication: Red FAULT LED = detected fault (e.g., communication loss, overvoltage, or channel failure).

• Diagnostics: The module reports channel‑level status to the DCS for alarm and maintenance logging.

6. Maintenance & Safety

• Preventive Maintenance: Inspect connections annually; test input channels for accuracy.

• Safety:

  • Disconnect all power before servicing.

  • Do not exceed rated input voltage/current.

  • Operate within specified temperature/humidity limits.

7. Product Status

• Lifecycle: End‑of‑Life (EOL); original manufacturing discontinued.

• Availability: Refurbished and used units offered as spare parts; typical warranty 6–12 months.

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