1. PRODUCT OVERVIEW
CACR-SR15BE12M is a universal open-version AC ServoPack under Yaskawa YASNAC VS800 CNC feed axis servo family, rated for 1.5kW, 200V class AC input, designed for general CNC lathe, milling machine and standard automation positioning equipment. Different from Y-suffix locked customized variants (Y8/Y72/Y56 etc.), the suffix 12M stands for standard open M-version factory firmware without OEM parameter lock, all control parameters, I/O definition and control modes are fully editable by end users freely without factory firmware rewrite permission. This unit supports dual command input: ±10VDC analog speed instruction plus differential pulse position instruction, compatible with Yaskawa standard incremental and absolute encoder servo motors for flexible matching on multiple machine brands.
Model Code Definition Explanation
CACR: Code of VS800 dedicated feed servo amplifier series for YASNAC CNC system
SR: Dual command input hardware specification (analog speed + pulse position dual input channel)
15: Nominal matching motor rated power = 1.5kW
BE: Standard main control PCB layout structure
2: Separated independent power supply design for main power circuit and control power circuit
12M: Standard universal open firmware platform; M=General open software, no OEM parameter write protection lock
2. ELECTRICAL RATINGS & TECHNICAL SPECIFICATIONS
2.1 Power Input Specification
Main circuit input: 3-phase AC200V~230V, 50/60Hz, allowable voltage fluctuation range +10% / -15% rated input voltage.
Control circuit input: Independent single-phase AC200V~230V separated power source, isolated from main power loop to avoid power surge interference on control logic.
DC bus nominal voltage after rectification: DC280V~320V.
2.2 Output Performance Parameter
Rated continuous output current: 11.7Arms; short-time overload capacity: 150% rated current sustainable for 60 seconds, peak 300% overload within 3 seconds for motor startup acceleration.
Driving scheme: Full-wave rectification + IGBT sine-wave PWM modulation, maximum output frequency up to 300Hz, three-phase AC0~230V variable output to matched servo motor.
2.3 Encoder Feedback Configuration
CN2 feedback channel fully open for both incremental encoder and multi-turn absolute encoder without function lock; compatible with standard pulse count encoders ranging from 1000p/r to 8192p/r commonly used in Yaskawa servo motors.
2.4 Terminal Definition Summary
R/S/T: 3-phase main AC power input terminals; U/V/W: Servo motor three-phase power output terminals
P & BN: External dynamic regenerative braking resistor connecting terminals for heavy-duty frequent deceleration application
CN1: Optocoupler isolated digital input/output port; M-version allows full I/O pin function redefinition via internal parameters (fixed pin function on Y customized drives)
CN2: Exclusive encoder feedback connector for motor position signal collection
3. CONTROL FUNCTION FEATURES (CORE DIFFERENCE AGAINST Y-SUFFIX LOCKED DRIVES)
Full open parameter access: All position loop proportional gain, speed loop PI gain, S-curve acceleration/deceleration parameter, notch filter and anti-vibration setup can be modified, stored and reset arbitrarily without factory unlock code.
Free control mode switching: Position control / analog speed control / torque limiting three core control modes are switchable via parameter setting, no fixed single working mode restriction as OEM locked variants.
Full customizable CN1 I/O: Each digital input and output signal definition can be reallocated through drive internal parameters to match different CNC controller wiring requirement.
RS422 serial communication full read & write authority: Complete parameter uploading and downloading available via serial port; Y-type customized servo only supports parameter reading with write access blocked by OEM firmware lock.
4. ENVIRONMENT & INSTALLATION REQUIREMENT
Operating ambient temperature: 0°C ~ +55°C; storage temperature range: -20°C ~ +70°C.
Operating relative humidity: 5%~80%RH, non-condensing environment mandatory for long-term stable operation.
Derate actual output power when installation altitude exceeds 1000 meters above sea level; indoor clean cabinet mounting only, protection grade IP20.
Vibration resistance standard: 10~55Hz, maximum vibration amplitude 0.5mm.
Installation space rule: Reserve minimum 50mm clearance at top and bottom of ServoPack for radiator heat dissipation.
Maintenance safety note: Cut off all AC power supply and wait minimum 15 minutes for internal DC bus capacitor full discharge before plugging/unplugging CN1/CN2 connectors or disassembling casing; hot plug under energized state is strictly prohibited.
5. BUILT-IN PROTECTION FUNCTION LIST
Integrated multi-layer hardware & software protection system including output overcurrent protection, DC bus overvoltage/undervoltage alarm, internal power module overheat shutdown, encoder wire break detection, continuous motor overload protection and CPU operation abnormality protection. The drive can automatically save latest 10 fault history codes in nonvolatile memory, fault records remain reserved after power off or manual reset. Built-in small capacity internal dynamic brake for light-load regular stop; external braking resistor must be wired between P-BN terminals for heavy load and frequent emergency stop scenarios.
6. APPLICATION SCOPE & REPLACEMENT GUIDANCE
6.1 Typical Application
Universal CNC machining equipment including vertical milling machine, CNC lathe, automated linear positioning machinery and general industrial automation feed axis control system.
6.2 Replacement Instruction
CACR-SR15BE12M is direct interchangeable with standard CACR-SR15BE12G non-custom version without firmware modification; cannot directly replace any Yxx suffix customized servo (Y8/Y72/Y56 etc.) unless original OEM customized firmware is rewritten inside target drive. When replacing broken unit with this M-version model, users only need to input matching motor parameters and machine tuning data according to original equipment setting.
7. STANDARD FAULT CODE DEFINITION (VS800 UNIFIED ALARM CODE)
1: Output overcurrent fault
2: Main power circuit hardware failure
3: DC bus overvoltage protection trigger
4: DC bus undervoltage alarm
5: Internal module overheat protection
6: Encoder connection break error
7: Long-term motor continuous overload
A: Main CPU abnormal malfunction
C: External emergency stop input signal activated
8. REGULAR MAINTENANCE ITEM
Check power terminal screw tightness and connector locking status every startup cycle; clean radiator dust accumulation every 3~6 months to avoid overheat protection shutdown; backup core tuning parameters after commissioning for fast recovery after drive replacement or parameter initialization.
Get a Quote