CACR-SR05BC1CS-Y159 is an OEM customized 0.5kW analog SERVOPACK within Yaskawa classic CACR-SR series, specially pre-calibrated with locked Y159 factory parameters for YASNAC VS-800 analog CNC system on vintage Japanese CNC lathes and small machining equipment. Built on BC-version mainboard hardware platform, the drive retains identical physical circuit layout as standard non-Y CACR-SR05BC1CS, yet core control parameters are solidified and write-protected in factory firmware. It is matched with USAREM/USAGED-05 series 500W servo motors equipped with 1000P/R incremental encoders and performs speed, position and torque triple closed-loop control via ±10VDC analog command signals from VS-800 CNC host.

CACR refers to Yaskawa traditional AC servo amplifier series code. SR stands for analog control configuration designed for ±10VDC command input compatible with VS-800 numerical control system. 05 represents rated continuous output power of 0.5 kilowatt. BC indicates exclusive BC revision printed circuit mainboard with internal circuit differing from previous BB, BA, AD board versions. Digit 1 means CN2 feedback interface is dedicated to 1000P/R incremental rotary encoder only. CS is the standard motor matching specification for 1000PPR incremental encoder servo units. Y159 serves as OEM customization mark, signifying factory preloaded fixed parameter group with parameter lock enabled for specific machine mechanical tuning.

Main circuit input adopts three-phase AC200V~230V with allowable voltage fluctuation of +10%/-15% and universal 50/60Hz frequency. Control power is supplied by independent isolated single-phase AC200V~230V power source separated from main power loop. Rated continuous output current is 4.2Arms, and short-term peak overload current reaches 11.0Arms within maximum 3-second overload duration. Internal drive structure applies IGBT sine-wave PWM inversion technology and relies on natural air convection cooling without built-in cooling fan.CN1 connector receives ±10VDC analog speed or position reference from VS-800 controller, along with terminals for external torque limit input, servo enable signal, fault reset input and servo-ready relay contact output. CN2 port exclusively receives A/B/Z phase pulse feedback from 1000P/R incremental encoder on matched servo motor. Main terminal block includes wiring points for three-phase main power input, motor output, external regenerative brake resistor and protective grounding terminal.

The servo unit is IP20 rated and must be vertically installed on DIN rail inside fully enclosed electrical cabinet. Operating ambient temperature ranges from 0℃ to 55℃, while storage temperature spans from -20℃ to 85℃. Working environment relative humidity shall not exceed 80%RH under non-condensing conditions; installation location must avoid corrosive gas, heavy conductive dust and liquid splashing. Maximum permissible installation altitude is 1000 meters above sea level. Overall dimension is consistent with standard BC-series servo drives.

Different from unlocked standard CACR-SR05BC1CS, Y159 customized firmware locks core parameters including position loop gain, speed loop gain, electronic gear ratio and encoder setting values. Once users execute factory parameter reset, the drive automatically restores original fixed Y159 OEM preset data instead of universal default factory parameters. Only minor auxiliary parameters such as acceleration/deceleration time and fault output logic can be fine-tuned on site, while key motion parameters remain write-protected and non-editable. Full-range protective functions including overcurrent, overvoltage, undervoltage, overheat, encoder disconnection and overload protection are reserved same as standard model, with front digital display showing unified fault codes for maintenance diagnosis. Direct substitution with non-Y standard BC1CS will trigger positioning deviation or continuous equipment alarm due to parameter mismatch.

It acts as exclusive original replacement spare part for aging Japanese CNC lathes and small machining centers originally equipped with VS-800 control system and Y159 parameter configuration. Not applicable for general equipment renovation because of permanently locked OEM parameter set.