• Architecture: TMR (triple‑redundant internal circuits, 2‑out‑of‑3 voting)

• Safety: IEC 61508 SIL 3, TÜV certified; single‑point failure immune

• Function: System power supply (backplane + I/O)

• Hot‑Swap: Online replacement without system shutdown

• Diagnostics: Overvoltage/undervoltage, overcurrent, overtemperature monitoring

• Compatibility: Trusted T8100/T8300 chassis; T823X power shelf

2. Specifications

2.1 Electrical

• Input Voltage: 110/240 V AC (auto‑sensing, 50/60 Hz)

• Output Voltage: 24 V DC (nominal; adjustable 20–32 V DC)

• Output Current: 10 A max (continuous) per module; 20 A max per power shelf (2× T8232)

• Redundancy: N+1 redundant (parallel operation, current sharing)

• Efficiency: ≥85 % (full load, 240 V AC input)

• Protection: Overvoltage, undervoltage, overcurrent, short‑circuit, overtemperature (auto‑reset)

• Isolation: 2500 V AC (input ↔ output)

• Backplane Power: Redundant 24 V DC to T8100/T8300 backplane

2.2 Environmental

• Operating Temp: –20 °C to +60 °C

• Storage Temp: –40 °C to +85 °C

• Humidity: 5–95 % RH (non‑condensing)

• Altitude: Up to 2000 m

• Vibration/Shock: IEC 60068‑2‑6/27 (industrial)

• Protection: IP40 (chassis mounted)

2.3 Mechanical

• Form Factor: Single‑width power pack (T823X series)

• Dimensions (H×W×D): 266 mm × 61 mm × 318 mm

• Weight: ~2.0 kg

• Mounting: Slides into T823X power shelf slot guides; front latch secured

• Input Connector: Rear IEC C14 (AC power)

• Output Connector: T823X power shelf backplane (24 V DC to chassis)

3. Installation

3.1 Module Insertion (Hot‑Swap Enabled)

1. Select empty single‑width slot in T823X power shelf; remove blank panel.

2. Align T8232 with shelf guides; push firmly until fully seated.

3. Secure front latch to lock module in place.

4. Confirm PWR and OK LEDs illuminate (steady green = healthy).

3.2 AC Power Wiring

• Input: 110/240 V AC (50/60 Hz) via rear IEC C14 connector

• Cable: 14–18 AWG stranded, 3‑conductor (L/N/PE)

• Grounding: PE connected to system earth (chassis PE)

• Redundancy: Dual AC inputs recommended (separate circuits for N+1 redundancy)

3.3 Backplane & Grounding

• Power Shelf: T823X provides redundant 24 V DC to T8100/T8300 chassis backplane

• Grounding: Chassis PE connected to system earth; field GND isolated from chassis GND

4. Configuration (via Trusted Workbench)

1. Connect PC with Trusted Workbench to the Trusted system.

2. Select T8232 in hardware tree (under T823X power shelf).

3. Set global parameters:

   • Output Voltage: 24 V DC (default; adjustable 20–32 V DC)

   • Fault Response: Latch / Auto‑reset

   • Redundancy Mode: N+1 (parallel current sharing)

4. Enable diagnostics:

   • Overvoltage/undervoltage detection

   • Overcurrent/short‑circuit detection

   • Overtemperature monitoring

5. Download configuration to module.

5. Front Panel Indicators

• PWR (Green): Steady = AC input normal; Flashing = AC input fault

• OK (Green): Steady = TMR vote healthy; Flashing = Single‑circuit fault

• FAULT (Red): On = Overvoltage/overcurrent/overtemperature; Flashing = Isolation fault

• READY (Yellow): On = Output active (24 V DC stable); Off = Output disabled

6. Operation

6.1 Normal Operation

• T8232 operates in TMR 2‑out‑of‑3 voting mode; each power circuit is monitored by three independent sensors.

• Multiple T8232 modules run in N+1 redundant parallel mode (current sharing) for fault tolerance.

• Diagnostics continuously monitor input/output voltage, current, and temperature; faults logged to system alarm list.

6.2 Fault Tolerance & Hot‑Swap

• Single‑Circuit Fault: System continues operating with two healthy circuits; OK LED flashes.

• Module Failure: Hot‑swap replacement allowed; system remains online during swap.

• AC Input Fault: Redundant T8232 modules take full load; PWR LED flashes.

7. Maintenance & Troubleshooting

7.1 Routine Maintenance

• Quarterly: Inspect seating, latch tightness, LED status.

• Annually: Clean with dry, lint‑free cloth; check AC cable connections and torque.

• Diagnostics: Use Trusted Workbench to review fault logs and power status.

7.2 Common Faults

• PWR LED Off: Check AC input (110/240 V AC); reseat module; verify circuit breaker.

• FAULT LED On: Identify overvoltage/overcurrent/overtemperature via diagnostics; reduce load; check for short circuits.

• OK LED Flashing: Single TMR circuit fault; replace module at next scheduled maintenance.

• READY LED Off: Verify DC output voltage (20–32 V DC); check backplane connections.

• Excessive Heat: Check ambient temperature; ensure proper ventilation; clean dust from vents.

8. Safety & Compliance

• Install only in Trusted T823X power shelf and T8100/T8300 safety chassis.

• Disconnect AC power before wiring (except hot‑swap module replacement).

• Use shielded AC cables to reduce EMI; comply with IEC 61000‑6‑2/4.

• Compliant with: CE, UL, CSA, IEC 61508 (SIL 3), TÜV certified.