1. Product Introduction
CIMR-M5N2018 belongs to discontinued Yaskawa VARISPEED VS-626M5 dedicated spindle drive series for CNC machine tools, exclusively designed for digital bus connection with original Japanese CNC numerical control systems via proprietary YENET1200 communication protocol. It must pair with MR5 series shared rectifier module for centralized DC bus power supply, widely used for spare replacement and maintenance of vintage imported machining centers, vertical milling machines and precision grinders, original manufacturing permanently terminated by Yaskawa.
2. Model Code Explanation
CIMR: Fixed prefix of Yaskawa inverter product code
M5: VS-626M5 series exclusive for CNC spindle control
N: NC digital bus communication type (YENET bus for YASNAC/FANUC NC system direct linkage, differs from analog M5A version)
2: 200V voltage grade (DC bus input specification)
018: Rated matching spindle motor power 18.5kW
3. Electrical Specifications
Power source comes from matched CIMR-MR5N series rectifier unit, input DC bus range: DC270V~DC325V, no direct AC mains input.
Rated output capacity: 29.0kVA; rated output current: 58A
Matched three-phase spindle motor power: 18.5kW
Adjustable three-phase output voltage: 0~230V AC
Max adjustable output frequency: 0~600Hz for ultra-high-speed spindle operation
Overload rating: 150% rated continuous current for 60s to sustain heavy intermittent cutting load
Built-in brake chopper, supports external dynamic braking resistor connection for fast spindle stop
Full closed-loop vector control via CN1 encoder feedback port for high-precision speed regulation
Complete protection: overcurrent, overvoltage, undervoltage, overheat, output short-circuit, motor overload protection
4. Control Features
As N-type NC bus dedicated model, primary speed and running commands are transmitted via YENET1200 digital bus from CNC controller instead of standard analog signals (0~10V/4~20mA). Analog voltage, current and multi-step speed terminal control are reserved as backup debugging mode. Closed-loop speed stability accuracy ≤±0.1% rated speed to guarantee precision machining quality.
5. Installation & Ambient Parameters
Open-frame IP00 protection structure with built-in forced-air cooling fan, required to install inside electrical control cabinet only.
Working ambient temperature: 0℃ ~ +50℃
Relative humidity: 20%~80% non-condensing
Maximum applicable installation altitude: below 1000 meters above sea level
6. Application Range
Specialized for main spindle driving of legacy Japanese imported CNC machining centers, precision milling and grinding equipment; only refurbished/second-hand stock available for equipment overhaul replacement due to official production discontinuation.
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