140CRA21120

Modicon Quantum DIO Drop Interface Module

24 VDC, 2 Redundant Ports, Distributed I/O Adapter

1. General Information

• Part Number: 140CRA21120

• Manufacturer: Schneider Electric

• Platform: Modicon Quantum PLC

• Module Type: DIO (Distributed I/O) Drop Interface

• Ports: 2 × redundant DIO ports

• Power Supply: 24 VDC

• Form Factor: Single slot, standard Quantum backplane

• Weight: ~0.7 kg

• Protection: Conformal coating (TC)

• Status: Active standard product

2. Electrical Specifications

• Rated Supply Voltage: 24 VDC

• Operating Voltage Range: 20 … 30 VDC

• Supply Current (max): 1.6 A @ 24 VDC

• Inrush Current: 30 A @ 24 VDC

• Power Dissipation: ~11 W

• Backplane Output: 5.1 VDC / 3 A nominal

• Min. Load Current: 0 A

• Fuse Rating (Recommended): 2.5 A

• Buffer Time: 1 ms max

• Protection:

  • Short‑circuit protection

  • Output overvoltage protection

3. I/O Capacity

• Input Words: 30

• Output Words: 32

• Isolation Voltage: 500 VDC (channel‑to‑backplane)

4. Communication

• Protocol: Modbus‑compatible DIO (Distributed I/O)

• Ports: 2 × redundant DIO (terminal block)

• Topology: Point‑to‑point / multidrop / redundant ring

• Cable: Shielded twisted pair

• Termination: Software‑selectable TERM

5. Environmental

• Operating Temperature: 0 °C … +60 °C

• Storage Temperature: −40 °C … +85 °C

• Relative Humidity: 5% … 95% non‑condensing

• Altitude: ≤ 5,000 m

• Shock/Vibration: Industrial standard

• ESD Immunity: 4 kV contact / 8 kV air

• EM Field Immunity: 10 V/m (80–2000 MHz)

6. Physical & Mechanical

• Dimensions: Standard Quantum single slot

• Mounting: Quantum backplane (hot‑swap capable)

• LED Indicators:

  • PWR: Green = Power OK

  • COM: Green blinking = Communication active

  • ERR: Red = Fault (comm loss / config error)

  • PORT1 / PORT2: Link status

7. Installation & Wiring

7.1 Mounting

1. Power OFF the Quantum rack.

2. Insert module into any single‑slot position.

3. Latch and tighten screw.

7.2 Power Wiring (24 VDC)

• +24 V: Positive

• 0 V: Ground

• PE: Protective Earth

• Wire size: 0.75–2.5 mm²

7.3 DIO Communication Wiring

• Connect shielded twisted pair to PORT1 / PORT2.

• Shield: Ground at one end only (PE).

• Redundant mode: Both ports connected to separate bus segments.

8. Configuration (Unity Pro)

1. Add 140CRA21120 in hardware catalog.

2. Set DIO address (1–63).

3. Enable redundancy (PORT1 + PORT2).

4. Assign I/O map: 30 In / 32 Out words.

5. Download configuration to PLC.

9. Operation & LED Status

• PWR ON: Module powered.

• COM Blinking: Data exchange active.

• ERR Steady Red: Communication loss / remote drop fault.

• ERR Flashing: Address conflict / config mismatch.

• PORT1/PORT2 Green: Link up.

10. Certifications

• CE

• UL 508

• CSA C22.2 No.142 / Class 1 Div 2

• C‑Tick, DNV, GOST

• RoHS compliant

11. Ordering Info

• 140CRA21120: Standard, 24 VDC, 2 redundant DIO ports