CACR-SR15BC1KS-Y112 is OEM customized full-digital AC Servopack belonging to YASKAWA Yasnac VS800 CACR-SR servo product line with rated matching power of 1.5kW under 200V voltage grade, specially developed for dedicated CNC machine tool and fixed automation production line matching application. The suffix Y112 stands for exclusive factory pre-programmed customized firmware edition with locked core control parameters and fixed I/O allocation preset by manufacturer, differing from standard universal KS specification model without custom tag.

Model coding definition: CACR refers to VS800 series servo dedicated for feed axis motion control of numerical control equipment; SR indicates dual command receiving circuit design that supports ±10VDC analog speed instruction and differential pulse position signal input; numeral 15 represents rated 1.5kW matching servo motor; BC stands for modified customized main control PCB and peripheral circuit layout different from standard BB version; digit 1 means separated power supply design with independent main power and control power source; KS is base program version while Y112 is exclusive OEM customized solidified firmware marking, with fixed encoder matching specification and non-modifiable partial speed/position loop parameters locked inside program. This servo can only operate stably paired with Y112-designated incremental encoder servo motor; regular CACR-SR15BC1KS without Y112 custom program cannot realize direct plug-in replacement unless professional manufacturer refreshes exclusive Y112 firmware to target drive unit.

Main power input adopts three-phase AC200V~230V, compatible with global 50Hz and 60Hz industrial power grid, allowable input voltage fluctuation scope is -15%~+10% relative to rated input voltage. Control power is independently supplied by single-phase AC200V~230V to avoid operational disturbance caused by main circuit voltage variation.

Continuous rated output current is 11.7A RMS; overload characteristic complies with 150% rated current sustainable for continuous 60-second operation and 300% peak overload limited within 3 seconds during motor startup phase. The servo applies IGBT sine-wave PWM modulation control method with maximum output frequency reaching 300Hz, normal DC bus operating voltage ranges from DC280V to DC320V. Terminals P and BN are reserved for external regenerative braking resistor wiring to consume regenerative feedback energy generated during frequent deceleration and emergency stop working scenarios. Overall protection grade is IP20, only vertical cabinet installation is permitted, net weight of single drive unit is around 3.3kg. CN2 feedback port is exclusively configured for Y112 specified incremental encoder with factory-fixed pulse resolution, absolute encoder access and built-in backup battery circuit are not supported on this interface.

Key customized electrical feature of Y112 variant: core parameters including fixed encoder resolution, partial speed loop proportional gain and default control mode are write-protected via customized firmware, users cannot revise these configurations through local parameter setting menu. RS422 serial communication function is restricted to read real-time running status data and historical fault logs only; parameter upload, download and bulk modification functions are disabled by Y112 program limitation, default operation mode is fixed analog priority control set during factory programming.

Permitted operating ambient temperature ranges from 0°C to +55°C; product storage environment temperature covers -20°C to +70°C. Applicable working relative humidity is 5%~80%RH without internal condensation inside servo casing. When installation altitude exceeds 1000 meters above sea level, users must appropriately lower continuous output load to prevent unexpected overheat protection triggering.

Allowable working vibration condition is 10Hz~55Hz with maximum single vibration amplitude of 0.5mm. Maintain over 50mm ventilation clearance on top and bottom of servo inside control cabinet to guarantee effective heat dissipation. Cut off all AC input power and wait no less than 15 minutes for complete discharge of internal DC bus capacitor before opening drive shell or plugging CN1, CN2 connectors; hot plugging under powered condition is strictly forbidden per safety operation specification.

R, S, T three terminals connect three-phase AC main input power cable; U, V, W terminals link three-phase power wiring of matched servo motor. P and BN terminals are used for external regenerative braking resistor connection to dissipate surplus deceleration regenerative energy.

CN1 is opto-isolated digital I/O connector with fixed Y112 OEM pin assignment definition; most input and output signal functions cannot be redefined by parameter modification operation. CN2 is dedicated incremental encoder feedback port only compatible with original Y112 specified servo motor. Front panel seven-segment LED displays real-time operating state and unified VS800 series standard fault alarm codes during equipment running.

Integrated full-range protection system includes output overcurrent protection, DC bus overvoltage protection, DC bus undervoltage protection, drive internal overheat protection, encoder disconnection detection protection, motor long-time continuous overload protection and main CPU abnormal operation protection. Latest ten groups of fault information are permanently stored in internal nonvolatile memory without data loss after power cut or manual fault reset action.

Built-in dynamic brake circuit handles regular low-load deceleration energy consumption; external braking resistor must be installed between P and BN terminals when applied under heavy cyclic load and frequent emergency stop working environment.

Direct plug-and-play replacement can only be realized by identical CACR-SR15BC1KS-Y112 model. Standard non-Y112 KS specification or other variant series drives cannot substitute directly due to different locked Y112 customized firmware and fixed I/O definition; replacement of non-Y112 unit requires authorized manufacturer to reload exclusive Y112 custom program on target servo drive.

Check fastening tightness of power terminals and CN1/CN2 connectors before every equipment startup; regularly clean radiator accumulated dust every three to six months to avoid overheat shutdown caused by poor heat dissipation effect. Full factory parameter initialization reset operation is prohibited on Y112 customized model, reset action will erase factory preset locked OEM parameters and lead to abnormal motor running or complete equipment malfunction.

Overheat alarm is mainly induced by dust-blocked radiator, insufficient cabinet ventilation or long-term overloaded operation; solve failure via cleaning cooling fins or reasonably reducing actual equipment running load. Encoder fault originates from loose CN2 connector, damaged feedback cable or mismatched non-Y112 specified servo motor; troubleshoot by inspecting wiring integrity and replacing original matching incremental encoder motor.

Deceleration overvoltage fault can be eliminated by mounting external braking resistor between P and BN terminals. Parameter write failure alert appears when attempting to modify Y112 locked core parameters, which belongs to normal software protection instead of hardware malfunction. Continuous overload alarm is triggered by mechanical transmission jamming or excessive payload; inspect mechanical transmission structure and properly cut down machine operating load.

1 = Output overcurrent fault2 = Main circuit hardware abnormal malfunction3 = DC bus overvoltage protection triggered4 = DC bus undervoltage alarm activated5 = Drive internal overheat protection6 = Encoder disconnection or wire break fault7 = Motor continuous overload protectionA = Main CPU abnormal running errorC = External emergency stop input signal effective