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Description:TRICONEX 3511 – A pulse input module for accurate frequency and pulse counting in process safety systems.
Product condition: New
Packing condition:Factory Packing
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Manufacturer | TRICONEX |
Item number | 3511 |
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.
Design Positioning
The 3511 is the only “low-speed” pulse-input card in the Tricon fault-tolerant family.
Instead of racing for high bandwidth, it stretches the sampling window to 167 µs-class and concentrates on frequencies from 0 – 3 kHz coming from slow magnetic pick-ups and dry contacts. Typical targets include:
ü Extruder screw speed
ü Metering-pump stroke counting
ü Belt feeder speed feedback
ü Low-speed agitator blade monitoring
Hard-difference Matrix vs. 3510 & 3515
Capability |
3511 |
3510 |
3515 |
F-min |
0.05 Hz |
20 Hz |
0 Hz |
Counter / Totalizer |
24-bit count |
none |
32-bit total |
Min. pulse |
150 µs |
25 µs |
500 µs |
Power |
5.2 W |
20 W |
4.8 W |
Max. cable |
≤300 m |
≤50 m |
≤1 km (current loop) |
1. Use shielded twisted-pair ≤300 m, shield earthed at 3511 end only.
2. For dry contacts or NAMUR sensors add external 2 kΩ pull-up to 24 V to obtain ≥2 mA wetting current.
3. With 2-wire mag pick-ups short “–” to 3511 COM; the on-board 3.9 kΩ terminator supplies auto-bias.
4. 250 V rms common-mode is allowed between channels, so 24 V and 48 V sensors can be mixed without external isolators.
Functional Highlights
1. Zero-speed alarm: if period >20 s a “Zero-Speed” bit is set—ideal for stall interlocks.
2. Frequency-to-current conversion: on-board algorithm converts Hz into 0 – 100 % floating point, saving one AO module.
3. Accumulator snapshot: read 24-bit totalizer via SOE with ±1 pulse accuracy—suitable for custody-transfer.
4. Phase-difference detect: dual-channel quadrature mode calculates direction, helpful for bucket-elevator slip monitoring.
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