A6370 Emerson - Overspeed Protection Monitor

Emerson EPRO A6370: Overspeed Protection Made Simple

What It Does

The Emerson EPRO A6370 monitors machine speed to prevent damage. It works with eddy current, Hall element, and magnetic sensors to keep industrial equipment safe.

Power & Safety

Voltage Supply: -24.5V ±1.5V DC (short-circuit proof, isolated). Max Current: 35mA – safe for most sensors.

Input Signals (Sensors)

Eddy Current/Hall Sensors: Voltage range: 0V–26V (± protected, up to ±48V limit). Frequency: 0–20kHz. Input resistance: ~100kΩ. Magnetic (VR) Sensors: Voltage: 1Vpp (min) to 30V RMS (max). Frequency: 0–20kHz. Input resistance: ~18kΩ.

Digital Controls

4 isolated digital inputs (Test Value 1/2, Enable Test, Reset Latch). Logic levels: Low: 0V–5V. High: 13V–31V (open). Input resistance: ~6.8kΩ.

Current Outputs

2 isolated outputs (0/4–20mA or 20–4/0mA). Accuracy: ±1% full scale. Max load: <500Ω. Max current: 20mA.

Built to Last

Reverse polarity protection and ±48V input limit keep it safe. Works with 0–20kHz signals—covers most machine speeds.

What’s in the Box

1x A6370 monitor 1x sensor wiring guide 1-year warranty (covers factory defects)

Used in Real Factories

A paper mill uses A6370 with eddy current sensors. It triggers alerts when machine speed hits 1,900 RPM (over the safe 1,800 RPM limit), cutting breakdowns by 25%.