Ps-855b — Maintenance Manual

| Parameter | Likely Value | |-----------|----------------| | | AC-DC Switching Power Supply | | Input Voltage | 200–240 VAC (single/three phase, depending on variant) | | Output Voltage | +5V, +12V, +24V DC (multiple rails) | | Power Rating | 150W – 300W | | Common Applications | CNC controllers, PLC systems, older Mitsubishi EDM machines | | Form Factor | Enclosed metal chassis with terminal strip or card-edge connector |

The PS-855B is a non-field-serviceable unit for most users. Maintenance is limited to cleaning, fan replacement, and capacitor checks. Internal repairs require advanced electronics knowledge. 2. Equipment Identification Based on cross-referencing part numbers from industrial forums and repair sites (e.g., ArtisanG, CNCZone, eBay listings), the PS-855B has the following typical specifications: ps-855b maintenance manual

| Original PS-855B Output | Replacement Model | |-------------------------|-------------------| | Single +24V @ 5A | Mean Well LRS-150-24 | | +5V (3A) / +12V (2A) / -12V (0.5A) | Mean Well RT-125B (adjust wiring) | | Custom CNC pinout | Use a generic PSU + adapter board | ps-855b maintenance manual