ICS Triplex T7481A Regent+Plus Monitored Guarded Output Module
$123.00
$320.00
Description
Configured for fault-tolerant digital output control in Regent+Plus platforms, the ICS Triplex T7481A (T7481A Monitored Guarded Output Module) provides direct physical/electrical execution.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | T7481A |
| Brand | ICS Triplex |
| Origin | United Kingdom |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | Logic side power via Triplicated Safetybus |
| Outputs | 16 guarded outputs (two isolated groups of 8) |
| Output Type | 24 VDC solid-state |
| Output Current | 2 A per channel continuous (0 to 40 deg C) |
| Voltage Range | 18 to 36 VDC |
| Minimum Load | 20 mA (5 mA typical) |
| On-State Voltage Drop | <= 1.0 V |
| Surge Current | 3.5 A peak, 7 A for 20 ms |
| Off-State Leakage Current | <= 5 mA (single fault), <= 7.5 mA (dual fault) |
| Isolation | 2500 V between field and logic circuits |
| Fusing | Front-mounted, 3 A fast-acting fuse per channel |
| Safety Certification | TÜV certified Risk Class 5, SIL 3 compliant (IEC 61508) |
Functional Architecture and Fail-Safe Execution
The module incorporates a Triple Modular Redundant (TMR) architecture interfaced via a triplicated Safetybus to enforce strict fault containment. Integral majority voting logic ensures SIL 3 compliance and execution of fail-safe states. Output drivers utilize a monitored, dual-redundant guarded structure preventing inadvertent load energization resulting from any single component failure. Continuous automatic diagnostics monitor channel status, open-circuit conditions, shorted loads, and fuse continuity across field wiring interfaces. Galvanic isolation up to 2500 V protects backplane logic from field-side transients.
Frequently Asked Questions
Q: Does module replacement require a system shutdown or de-energization of adjacent I/O cards?
A: No. The card supports full hot-swap maintenance under live system operation without interrupting power or signal processing on adjacent rack slots.
Q: How does the module react to an open-circuit field load condition?
A: Front-panel diagnostic LEDs continuously track per-channel load and fuse status while reporting wiring break conditions back to the main processor via the Safetybus interface.
Field Installation Guidelines
- Verify that all field wiring field connections strictly observe 24 VDC polarity requirements and do not exceed the 2 A maximum continuous load rating per channel.
- Maintain proper shield grounding practices by terminating drain wires at designated system ground bars to prevent high-frequency noise interference.
- Ensure the module is fully seated into the chassis backplane before securing the retaining screws to guarantee complete contact engagement on the triplicated Safetybus.
- Replace blown channel fuses exclusively with 3 A fast-acting, front-accessible fuses rated for the specified voltage limits.
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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