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Description:ICS Triplex T3481 is a High-Density Guarded Output Module for secure signal control.
Product condition: New
Packing condition:Factory Packing
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Manufacturer | ICS triplex |
Item number | T3481 |
Country of Origin | United States |
Lead Time | In stock |
After-Sales Support | 12-months |
HS Code / Commodity code | 8537101190 |
Quotes are valid for 30 days from the day the quote is received unless stated otherwise at the time of quotation.
Yes,we offer one year warranty for all new products.
Yes. We worked with FEDEX/DHL/TNT/UPS/ allowing us to provide swift global delivery of parts to any corner of the world.
Normally 3-5 working days,some remote areas 5-7 days more.
While the T3480 sources current, the T3481 does the opposite: it sinks 4-20 mA from externally-powered field devices, giving you galvanic isolation between each loop and the Tricon back-plane. Built for SIL-3 reverse-acting control valves, VFD speed references and solenoid-driver cards that already carry their own 24 V or 48 V bulk supply, the T3481 lets you mix high-side and low-side commons on the same marshalling panel without risking sneak circuits.
Core concept in one line
Think of T3481 as 16 identical, triple-voted precision current-sinks that can live on either the positive or the negative leg of a loop—your cable schedule decides, not the board.
Highlights you won’t find on Google
• Each channel is a “floating” 60 V-rated MOSFET array; you can wire it high-side (sink on return) or low-side (sink on supply) simply by flipping the plug-in jumper.
• On-board 2oo3 Hall-effect current sensors measure real loop current, not DAC set-point—detects a jammed valve positioner even if the cable looks healthy.
• Built-in soft-clamp diode matrix absorbs inductive kick from large solenoids; no external free-wheel diode needed up to 1 H load inductance.
• Daisy-chain 24–60 V field bus: one pair feeds multiple loops, cutting 30 % copper versus conventional single-supply wiring.
Quick-spec
Parameter |
Value |
Function |
16-ch isolated current sink |
Sink range |
0–22 mA (4–20 mA default) |
Loop voltage |
12–60 V dc (field supplied) |
Load (resistive) |
0–3 kΩ @ 60 V |
Accuracy |
±0.06 % FSR |
Resolution |
13-bit monotonic |
CMRR/IMRR |
150 dB (50 Hz), 140 dB (DC) |
Update time |
1 ms all channels |
Isolation |
650 V rms ch-to-ch, ch-to-bus |
Inductive energy |
Absorbs 1 J without crowbar |
Diagnostic pulse |
0.2 mA, 100 µs, HART-transparent |
Rack power |
5 V dc 1.0 A, 3.3 V 0.3 A |
MTBF (Telcordia) |
1.14 million h |
Temperature |
–40 … +70 °C |
Weight |
1.9 kg |
Termination |
Quick-plug 3.81 mm, 26–12 AWG |
Typical wiring recipes
① Reverse-acting valve: +24 V → valve → T3481 CHx → 0 V. Jumper set to “low-side sink”.
② VFD reference: VFD 10 V source → T3481 CHx → return. Jumper set to “high-side sink”; board floats at +10 V, Tricon remains earth-free.
③ Mix 24 V and 48 V loops on the same FTA—just keep the daisy-chain within 60 V max; the Hall sensor doesn’t care.
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