Description
Quick Overview
- ICS Triplex T8461 = 40-channel Digital Output TMR Module.
- Works with Trusted TMR System for safety-critical control.
- Output: 48 Vdc, 0.75A per channel, 6A per power group.
- Certified for ordinary and hazardous locations (ATEX/IECEx).
Key Features
- Fault-tolerant, fully triplicated circuit design.
- 5 independent power groups (8 outputs each).
- Electronic latching short circuit protection.
- Automatic output short circuit protection.
- Sequence of Events: 1ms resolution, ±0.5ms accuracy.
- Self-test every 2 minutes.
- Optional line monitoring available.
Technical Specifications (Tree View)
- Manufacturer & Model
- Brand: ICS Triplex
- Model: T8461
- Series: Trusted TMR System
- Type: Digital Output TMR 48 Vdc 40 channel
- Power Supply Ratings
- System supply: 20 – 32 Vdc
- Power consumption: 27 W
- Field supply at 24V (0.75A/ch): 18W
- System supply (24V): 22W
- Input/Output Ratings
- Output voltage range: 18 – 58 Vdc
- Current per channel: 0.75A continuous
- Current per power group: 6A
- Minimum on-state load: 25mA
- Off-state resistance: 33kΩ (effective leakage)
- On-state resistance: 0.6Ω
- Capacitance Load (Important)
- Pre-release 3.5: 30-55uF
- Release 3.5: at least 3500uF at 0.75A
- Flashing/pulsing loads: Use Release 3.5
- Performance & Timing
- Turn-on/off delay: 0.5ms
- Sample update time: 0.5ms
- Event resolution: 1ms
- Time-stamp accuracy: ±0.5ms
- Channel crosstalk: > -40dB
- Isolation Ratings
- Sustained working: ±250 Vdc
- Maximum withstanding: ±2.5 kVdc
- Environment & Dimensions
- Operating temp: -5°C to 60°C (23°F to 140°F)
- Storage temp: -25°C to 70°C (-13°F to 158°F)
- Humidity: 5-95% RH non-condensing
- Size: 266 x 31 x 303 mm (10.5 x 1.2 x 12 inches)
- Weight: 1.285 kg (2.8 lbs)
Certifications
- Ordinary Location (Ord)
- Hazardous Location (HazLoc)
- ATEX certified
- IECEx certified
- Intrinsic safety: Requires external barrier
Installation Guide
- Mount in Trusted TMR chassis (31mm wide slot).
- Connect system power: 20-32 Vdc to backplane.
- Wire field outputs: 40 channels, 5 power groups.
- Add external barrier if intrinsic safety needed.
- Use Release 3.5 for high capacitance or pulsing loads.
Debugging & Maintenance
- Module self-tests every 2 minutes automatically.
- Short circuit protection is latching – cycle power to reset.
- Check LEDs on front panel for fault status.
- No regular calibration needed.
- Replace module hot-swap (Trusted system supports it).
Compatibility
- Works with Trusted TMR Controller and chassis.
- Compatible with ICS Triplex TMR I/O backplane.
- Use with external barriers for intrinsic safety apps.
Package, Warranty & Shipping
- In box: T8461 module, documentation, terminal blocks.
- Warranty: 12 months from ship date.
- Shipping: FedEx, UPS, DHL with tracking.
5 Professional FAQs
- Q: Can T8461 drive high capacitance loads?
A: Yes if you use Release 3.5 firmware. It handles 3500uF at 0.75A. - Q: What happens when a channel shorts?
A: Electronic latching protection turns off that channel. Other channels keep working. Cycle power to reset. - Q: Do I need external fuses per channel?
A: No. Module has built-in electronic short circuit protection. No fuses to replace. - Q: What is the difference between power groups?
A: 5 groups with 8 outputs each. Each group has 6A max total. Use groups to separate different field loads. - Q: Can I use T8461 in SIL3 safety system?
A: Yes. Trusted TMR is TÜV certified for SIL3. T8461 part of that certified system.
Selection Guide & Buying Advice
- Need 40 digital outputs at 48V 0.75A? Choose T8461.
- Need higher current? Look at T8480 (2A per channel).
- For flashing/pulsing loads: Request Release 3.5 firmware version.
- Check your system firmware version before ordering.
- We stock original ICS Triplex T8461 with 12 month warranty.
Contact Us
- Need help? Message us on WhatsApp: +86 158 8020 0923
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