CACR-SR15BC1KS-Y264 is customized OEM full digital AC Servopack belonging to YASKAWA Yasnac VS800 CACR-SR servo series, rated matching power 1.5kW for 200V-class CNC machine tools and special automation production equipment. Suffix Y264 represents factory pre-solidified exclusive customized firmware version with locked core control parameters and fixed I/O definition, specially tailored for designated machine configuration, differing from standard non-custom CACR-SR15BC1KS general version without Y264 marking.

Model coding definition: CACR stands for VS800 series servo driver for CNC feed axis motion control; SR supports dual command input including ±10VDC analog speed signal and differential pulse position instruction; numeral 15 means rated 1.5kW matched servo motor specification; BC refers to customized mainboard and peripheral circuit layout different from standard BB variant; digit 1 separates main power supply and independent control power loop; KS is standard base software edition, while Y264 is dedicated OEM custom firmware tag with fixed encoder matching parameters and write-protected partial loop gain settings. This drive can only run stably with Y264-specified incremental encoder servo motor; ordinary standard CACR-SR15BC1KS cannot directly substitute unless official Yaskawa supplier rewrites Y264 exclusive firmware to replacement unit.

Main power input: three-phase AC200V~230V, compatible with 50Hz/60Hz industrial power grid, allowable input voltage fluctuation: -15%~+10% of rated voltage. Control power is independent single-phase AC200V~230V to isolate disturbance from main power variation.

Rated continuous output RMS current:11.7A; overload rating:150% rated current sustainable for 60s continuous operation, 300% peak overload limited within 3s during motor startup. Adopts IGBT sine-wave PWM modulation, maximum output frequency 300Hz; normal DC bus operating voltage DC280V~DC320V. Terminals P & BN are reserved for external regenerative braking resistor connection to consume feedback energy under frequent deceleration and emergency stop conditions. Enclosure protection grade IP20, vertical cabinet-only installation allowed, net weight approx 3.3kg. CN2 encoder feedback port locks fixed incremental encoder pulse resolution defined by Y264 firmware, absolute encoder and backup battery wiring function are not supported.

Exclusive Y264 customized electrical feature: core parameters including speed loop gain group, fixed encoder resolution, default control mode are locked inside custom firmware and cannot be modified via local parameter menu. RS422 serial communication only supports real-time operating data and fault history reading; parameter upload/download and batch modification functions are disabled by Y264 program restriction, factory fixed default control mode is analog speed priority control.

Working ambient temperature:0℃~+55℃; storage temperature:-20℃~+70℃; working relative humidity 5%~80%RH without internal condensation inside servo casing. When installation altitude exceeds 1000m above sea level, derate continuous output load properly to avoid overheat protection.

Applicable vibration environment:10Hz~55Hz with max single amplitude 0.5mm. Reserve more than 50mm empty ventilation space on top and bottom of driver inside electrical cabinet for heat dissipation. Cut off all AC input power and wait minimum 15 minutes for full DC bus capacitor discharge before disassembling casing or hot-plugging CN1/CN2 connectors; powered plug/unplug is strictly prohibited per safety regulation.

R/S/T terminals connect three-phase main AC input power cable; U/V/W terminals connect three-phase output wiring to matched servo motor; P and BN terminals for external regenerative brake resistor wiring to absorb deceleration regenerative energy.

CN1 is optically isolated digital I/O connector with fixed Y264 OEM pin assignment, most input/output signal functions cannot be redefined via parameter adjustment. CN2 is exclusive incremental encoder feedback interface only for original Y264 specified servo motor. Front panel seven-segment LED displays real-time running status and unified VS800 series fault codes during operation.

Complete multi-layer protection system covers output overcurrent, DC bus overvoltage, DC bus undervoltage, internal drive overheat, encoder cable break detection, long-time motor overload and main CPU abnormal protection. Latest ten groups of fault data are stored permanently in nonvolatile memory without data loss after power off or manual fault reset.

Internal embedded dynamic brake circuit handles regular low-load deceleration energy dissipation; external braking resistor must be mounted between P-BN under heavy cyclic load and frequent emergency stop application.

Only identical CACR-SR15BC1KS-Y264 can realize direct plug-and-play replacement. Standard non-Y264 KS model or other variant specifications cannot replace directly due to different locked Y264 firmware and fixed I/O layout; non-Y264 drive needs authorized factory flashing exclusive Y264 custom program before field replacement.

Check tightening status of power terminals and CN1/CN2 connectors before each equipment startup; clean radiator dust every 3~6 months to prevent overheat shutdown from poor heat dissipation. Full factory parameter reset operation is forbidden for Y264 customized model, reset will erase locked OEM preset parameters and cause abnormal motor running or equipment breakdown.

Overheat alarm: mainly caused by radiator dust blockage, insufficient cabinet ventilation or long-term overload; fix via radiator cleaning or reducing actual machine load. Encoder error triggered by loose CN2 plug, damaged feedback cable or mismatched non-Y264 motor; troubleshoot via wiring inspection and replacement of original matched incremental motor.

Deceleration overvoltage fault solved by installing external braking resistor on P and BN terminals. Parameter write failure alert is normal software protection when users attempt modifying Y264 locked parameters instead of hardware fault. Continuous overload alarm comes from mechanical stuck or excessive payload; inspect transmission structure and cut down machine load appropriately.

1 = Output overcurrent fault2 = Main circuit hardware failure3 = DC bus overvoltage protection trigger4 = DC bus undervoltage alarm5 = Internal servo overheat protection6 = Encoder disconnection/wire break fault7 = Motor continuous overload protectionA = Main CPU operation abnormality errorC = External emergency stop signal activated