1.Executive snapshot
The T3401 is a 24-channel, triple-modular-redundant (TMR) digital input module that plugs straight into any ICS TRIPLEX 3003 or ICS Plus rack. Every I/O point is voted 3-of-3, giving you SIL 3 / PLe without external marshalling. One module = 24 safety devices, 0 single-points-of-failure.
2.Core specifications (25 °C, nominal 24 Vdc)
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Parameter
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ICS TRIPLEX T3401
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Function
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24 DI, TMR, IEC 61508 SIL 3
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Input voltage range
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16 – 32 Vdc (ON ≥ 14 V, OFF ≤ 5 V)
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Input current
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3.2 mA @ 24 V per channel
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Scan / refresh
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1 ms (all 24 ch.)
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Isolation
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250 Vrms channel-to-bus, 1500 Vrms channel-to-ground
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Power draw
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4.2 W typical, 6.0 W max
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Connector
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High-density spring-cage, pluggable
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MTBF (Telcordia)
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1 350 000 h
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Temperature
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–40 … +70 °C operational
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Humidity
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5 … 95 % RH non-condensing
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Certifications
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CE, UL, cUL, ATEX, IECEx, ABS, DNV
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3.Mechanical & rack fit
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Item
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Value
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Width
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1 slot (30 mm)
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Weight
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0.42 kg
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Hot-swap
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Yes – insertion under power
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Compatible racks
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3003, ICS Plus, T9300 series
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Max modules per rack
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64 (1536 safety DI)
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Why engineers pick T3401
1. Triple voters on-chip – no external redundancy wiring
2. Built-in line-monitoring for NAMUR, dry contacts or proximity switches
3. Automatic discrepancy alarm < 5 ms
4. Firmware flashable online via TriStation 1131 v4.9+
5. May be mixed with T3402 (SOE) or T3431 (pulse-input) in same rack
Services from PLC Autocontroller
² At PLC Autocontroller, we provide:
² Original and new automation parts ready for fast delivery.
² Support for discontinued and hard-to-find models.
² Technical guidance and after-sales support from experienced engineers.
² Worldwide logistics service to ensure timely delivery.
Message May and get it within 30 minutes.
E-mail: ab@mooreplc.com
Phone / WhatsApp: +86-18106909650
WeChat ID: dcsfcs
What happens next?
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Your quote
You’ll get a fully customized quote to fit your unique needs.
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