This product is a module that can accept commands from the host computer and convert them into an isolated process current suitable for interfacing with valves and actuators. The product can be used for remote data acquisition, machine monitoring, remote energy management and process monitoring and control applications.
The 6B21 is a single‑channel signal‑conditioning module that provides a digitally‑controlled isolated current‑loop output with 12‑bit resolution. It supports selectable output ranges of 0‑20 mA or 4‑20 mA and includes 1500 V rms common‑mode isolation and 240 V rms output protection.
Communications are handled via an RS‑485 serial interface with programmable baud rates up to 19.2 kBaud. The module includes on‑board EEPROM for calibration, a microcontroller for configuration, and a compact 2.3" × 3.1" × 0.79" mechanical package suitable for industrial temperature ranges of –25 °C to +85 °C.
| Output range | 0‑20 mA or 4‑20 mA |
|---|---|
| Resolution | 12 bits |
| Common‑mode voltage isolation | 1500 V rms continuous |
| Output protection | 240 V rms continuous |
| Baud rates | up to 19.2 kBaud |
| Operating temperature range | -25 °C to +85 °C |
| Mechanical dimensions | 2.3" × 3.1" × 0.79" (58.4 mm × 78.7 mm × 19.1 mm) |
The module can be set to either 0‑20 mA or 4‑20 mA process current.
It provides 1500 V rms continuous common‑mode voltage isolation.
It is rated for –25 °C to +85 °C.