Product Specification – CPS-20NB

1. General Information

• Manufacturer: Yaskawa Electric Corporation (安川电机)

• Part Number: CPS-20NB (alternate: CPS20NB)

• Product Type: CNC Control System Power Supply Module (PSM, Power Supply Module)

• Compatible Series: Yasnac CNC Series (M-64, M-65, i80, i100, and other legacy Yaskawa CNC controls)

• Product Form: Industrial PCB-mounted switching power supply board

• Product Status: Discontinued legacy OEM component, for CNC maintenance & replacement

2. Product Overview

3. Technical Specifications

3.1 Electrical Parameters

• Input: AC 200–220V, 50/60Hz

• Output: Multi-channel regulated DC outputs (standard for Yasnac CNC):

  • +5V DC (for system logic, CPU, memory)

  • ±12V DC (for analog circuits, I/O interfaces)

  • +24V DC (for relays, solenoids, operator panels)

• Protection Features: Over-voltage (OVP), over-current (OCP), short-circuit, and over-temperature (OTP) protection

• Cooling: Natural convection (passive air cooling)

• Isolation: High galvanic isolation between input and output

3.2 Physical & Environmental

• Form Factor: PCB module, card-rack mountable (for Yasnac control racks)

• Weight: Approx. 6.8 kg (15 lb)

• Operating Temperature: 0°C ~ +45°C

• Storage Temperature: -20°C ~ +65°C

• Relative Humidity: 5% ~ 85% RH (non-condensing)

• Vibration Resistance: Standard industrial 0.5g, 10–60Hz

3.3 Key Features

• Exclusively designed for Yasnac CNC systems

• Multi-output DC power for entire control system

• Industrial-grade reliability for 24/7 operation

• Built-in EMI/RFI filtering for electromagnetic immunity

• Comprehensive protection against electrical faults

• PCB-based design for direct rack mounting

• Plug-and-play replacement for faulty units

• LED status indicators for power and fault diagnostics

4. Typical Applications

• Yasnac M-64 / M-65 CNC machining centers

• i80 / i100 series Yaskawa CNC controls

• Legacy Yaskawa CNC lathes, grinders, and milling machines

• Industrial automation systems using Yasnac controllers

• Replacement power supply for CNC system repair & maintenance

5. Compatibility & Replacement Notes

• Direct Replacement: Exact replacement for CPS-20NB series modules

• Compatibility: Exclusive to Yaskawa Yasnac CNC racks; not interchangeable with standard power supplies

• Installation: Requires system power-off; install in dedicated rack slot; reconnect all I/O power connectors

• Warranty: Typically 6–12 months for refurbished/replacement units

• Handling: ESD-sensitive component; use proper anti-static procedures during installation

• Safety: Disconnect AC input before service; verify output voltages post-installation