TRICONEX 2651

Digital Output Module (1‑Channel, TMR, 115 VAC, 2 A, SIL 3)

Official Specification & User Manual (English)

1. General Description

2. Part Number & Type

• Model: 2651

• Type: Digital Output Module (DO), TMR

• Series: Trident (Triconex / Schneider Electric)

• Safety Level: SIL 3 (IEC 61508)

• Approvals: TÜV Rheinland, FM, CSA

• Status: Obsolete / Discontinued

3. Key Features

• 1 Isolated Digital Output Channel

  115 VAC nominal (90–132 VAC operating).

• Triple Modular Redundancy (TMR)

  2oo3 voting; three independent output circuits.

• High Switching Capacity

  2 A continuous, 5 A surge per channel.

• 2500 V RMS Isolation

  Channel‑to‑backplane galvanic isolation.

• Comprehensive Diagnostics

  Load open/short, overcurrent, overvoltage, backplane fault.

• Hot‑Swappable

  Replace online without system shutdown.

• SIL 3 Fault Coverage

  99% diagnostic coverage.

4. Technical Specifications

4.1 Output Channel

• Number: 1 channel, isolated

• Signal Type: 115 VAC (90–132 VAC, 50/60 Hz)

• Continuous Current: 2 A @ 115 VAC

• Surge Current: 5 A (1 sec max)

• Switching Speed: ≤ 15 ms

• Isolation: 2500 V RMS (channel‑to‑backplane)

4.2 Safety & Redundancy

• Architecture: TMR, 2oo3 voting

• Safety Integrity Level: SIL 3

• Fault Coverage: > 99%

• System Availability: 99.999%

4.3 Environmental

• Operating Temperature: 0°C to +60°C

• Storage Temperature: −40°C to +85°C

• Humidity: 5%–95% non‑condensing

• Vibration: 5–200 Hz, 1g

4.4 Power

• Backplane: 5 VDC / 1.5 A

• Power Consumption: ≤ 12 W

4.5 Physical

• Dimensions: 133 mm × 114 mm × 32 mm (5.25” × 4.50” × 1.25”)

• Weight: ~0.45 kg

• Mounting: Trident baseplate, 19” rack

5. Functional Overview

• TMR Output Switching

  Three independent solid‑state relays; 2oo3 voted output.

• Overload Protection

  Electronic current limiting, short‑circuit protection.

• Diagnostics & Alarms

  Open load, short circuit, overcurrent, overvoltage, module overtemperature; reported via TriStation.

• SOE Logging

  Time‑stamps state changes (≤ 40 ms).

6. LED Indicators

• PWR (Green): Module power OK

• RUN (Green): Active, communicating

• FAULT (Red): Channel/module fault

• CH 1 (Yellow): Output ON/OFF status

7. Installation & Configuration

1. Insert 2651 into an empty Trident baseplate slot.

2. Connect 115 VAC field devices (solenoids, contactors) to the DO terminal base.

3. Use TriStation 1131 to:

   • Set output logic (NO/NC)

   • Enable diagnostics (open/short, overcurrent)

   • Configure pulse mode (if required)

4. Verify: PWR + RUN green, no FAULT red.

8. Typical Applications

• ESD solenoid valves (115 VAC)

• Fire & gas suppression system actuators

• 115 VAC motor contactors (small loads)

• SIL 3 safety interlocks in oil & gas, power, chemical

• Critical alarm annunciators

9. Maintenance

• Hot‑swap faulty 2651 without shutdown.

• Inspect field wiring and terminal base connections.

• Review fault/SOE logs via TriStation.

• Note: 2651 is obsolete; replacement: 2402 (24 VDC) or 2652 (115 VAC).

10. Ordering Information

• Model: 2651

• Description: Triconex Trident 1‑Channel TMR Digital Output Module (115 VAC, 2 A, SIL 3)

• Compatible with: Trident Chassis, 2101/3700A MP Modules, TriStation 1131

• Replacement: 2652 (115 VAC, TMR, 2 A)