Mitsubishi FX2N-20GM Positioning Module, EOL, 2-Axis Pulse O

What it is and what it does

The Mitsubishi FX2N-20GM is a standalone 2-axis positioning module with open-collector pulse output at 200 kHz (100 kHz interpolation). It accepts DC 24 V ± 15% and runs as a smart peripheral or stand-alone controller.

Key ratings that decide fit

The CLR (clear) input range is DC 5 V to 24 V — common for 24 V PLC I/O or 5 V TTL-level encoders. The DOG (near-point dog) signal requires a pulse width of about 0.5 ms; the zero-point signal (PG 0) typical response is about 16 µs. These timing specs matter when replacing a failed module: if your machine relies on a faster or slower dog sensor, the position capture may shift.

Integration notes

Mounts on a DIN rail in the FX2N bus extension. Requires a dedicated Class D ground (100 Ω or less). Supply current is 10 W from the 24 V external supply; a 125 V, 1 A fuse protects the module. Input signals accept contact or NPN open-collector, 24 V nominal. The module cannot be used above 2000 m altitude without derating, and must not be installed in environments with corrosive gas, flammable gas, or excessive conductive dust.