ICS Triplex T8451C Trusted TMR 24 Vdc Digital Output Module
$123.00
$320.00
Description
The ICS Triplex T8451C, also cataloged as the T8451 TMR Digital Output Module, provides 24 VDC digital output control with triple modular redundancy, line monitoring, and diagnostic processing within Trusted SIS architectures.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | T8451C |
| Brand | ICS Triplex / Rockwell Automation |
| Module Type | TMR 24 VDC Digital Output Module |
| Weight | 1.13 kg |
| Dimensions | 30 cm x 3 cm x 24.1 cm |
| Operating Temp | -5 deg C to +60 deg C |
| Operating Humidity | 5% to 95% RH, non-condensing |
| Power Consumption | Not specified in supplied data |
| Number of Channels | 40 |
| Power Groups | 5 isolated groups, 8 channels per group |
| System Supply Voltage | 20 to 32 VDC |
| Operational Output Voltage | 18 to 32 VDC |
| Continuous Current Rating | 2 A per channel |
| Maximum Power Group Current | 8 A per group |
| Turn-On/Off Delay | 0.5 ms |
| SOE Event Resolution | 1 ms |
| Self-Test Interval | 2 minutes |
| Short-Circuit Protection | Electronic, automatic latching/reset |
| Isolation Rating | +/-250 VDC sustained; +/-2.5 kVDC maximum |
| Redundancy Architecture | TMR, 2oo3 hardware voting |
| Safety Certification | IEC 61508, up to SIL 3 |
| Hot-Swap Capability | Supported |
| Line Monitoring | Short circuit, open circuit, and earth fault detection |
| Coating | Conformal-coated version |
TMR Safety and Output Diagnostics
The T8451C uses triple modular redundancy with 2oo3 voting to maintain output processing following a single electronic fault.
The module provides 40 digital output channels arranged across five isolated power groups, with eight channels per group.
Each channel supports continuous output current up to 2 A, while each power group has an 8 A maximum limit.
Automatic diagnostics monitor field wiring conditions, including short circuits, open circuits, and earth faults.
Electronic short-circuit protection provides automatic latching and reset behavior for detected output faults.
The module supports online replacement, allowing hot-swapping without planned interruption of system operation.
The specified 1 ms SOE resolution supports event sequencing where output transition timing must be recorded.
Frequently Asked Questions
Q: Does the T8451C support hot-swapping?
A: Yes. The supplied specifications identify the T8451C as supporting online replacement during system operation.
Q: How are the digital outputs organized electrically?
A: The 40 outputs are divided into five isolated power groups, with eight channels assigned to each group.
Q: What diagnostic functions are provided for field wiring?
A: The module performs line monitoring for short circuits, open circuits, and earth faults, together with automatic self-diagnostics.
Field Installation Guidelines
- Install the module in the specified Trusted system chassis and verify mechanical seating before energization.
- Confirm the system supply remains within the specified 20 to 32 VDC range.
- Observe the 8 A maximum current limit for each isolated power group.
- Keep field output wiring separated from high-voltage power conductors and high-current switching circuits.
- Route signal wiring to minimize electromagnetic coupling from motors, contactors, drives, and switching power equipment.
- Connect cable shields according to the applicable Trusted system grounding design and site electrical standards.
- Do not defeat the specified isolation, protective-earth, or field-circuit requirements during wiring modifications.
- Verify channel polarity, load connections, and field termination points before applying output power.
- After installation, review module diagnostics and confirm expected line-monitoring status before placing outputs into service.
- For hot-swapping, follow the approved Trusted system maintenance procedure and verify the replacement module identification before insertion.
Features
Minimum Order Quantity (MOQ)
We welcome bulk orders and have a minimum order quantity of just one unit.
Certificates and Documentation
Upon request, we can provide all necessary documentation, including Certificates of Origin/Conformance and other required export documents.
Delivery Time
For items in stock, we aim to deliver within 1-3 days after payment confirmation. Items with specified lead times will be delivered according to the quoted schedule.
Payment Methods
We accept 100% T/T (Telegraphic Transfer) payment before shipping. For items with lead times, a 30% deposit is required upfront, with the remaining 70% due before shipment. For RMB transfers, please contact us if you have an agent in China.
Warranty
We offer a standard one-year warranty on all new and original items. If you require an extended warranty, please contact us for additional cost details.
Refund and Return Policy
Your satisfaction is important to us. If you need to return an item, it must be done within 30 days of the order date. The product must be unused, unopened, and in its original packaging with all accessories included. Refunds are processed within 5-7 business days after we receive the returned item. Please note that shipping and related charges are non-refundable.
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