This product is a high-precision frequency input module, which can convert frequency input signals to voltage or current output, support 25~1100Hz and 520Hz~25kHz two frequency ranges, suitable for industrial signal conversion, isolation and filtering applications
The 3B45 and 3B46 are single‑channel isolated frequency input modules that provide simultaneous precision voltage and current outputs. They accept a variety of analog sensor signals such as thermocouples, RTDs, strain gages, and frequency transducers, and are designed for industrial signal conditioning, isolation, and filtering.
Key features include hot‑swappable plug‑in design, up to +1500 V peak isolation, dual outputs (0‑+10 V and 4‑20 mA), and configurable input ranges via an external AC1310 ranging card. The modules can operate from a +15 V to +16.5 V supply and are rated for harsh environments from –28 °C to +85 °C.
| 3B45 input frequency range | 25 Hz to 1100 Hz |
|---|---|
| 3B46 input frequency range | 520 Hz to 25 kHz |
| Isolation voltage | +1500 V peak |
| Current output range | 4 mA to 20 mA (or 0 mA to 20 mA) |
| Operating temperature range | -28 °C to +85 °C |
| Module dimensions | 3.15" × 3.395" × 0.775" (80 mm × 86.2 mm × 19.7 mm) |
The 3B45 accepts full‑scale inputs from 25 Hz to 1100 Hz.
The modules provide up to +1500 V peak isolation.
Yes, all 3B45 and 3B46 modules are mix‑and‑match and hot‑swappable, allowing insertion or removal without disrupting system power.
Each module provides simultaneous voltage output (0 V to +10 V) and current output (4‑20 mA or 0‑20 mA).