CACR-SR15BB1CS-Y16 is a factory customized OEM AC servo drive belonging to Yaskawa Yasnac VS800 full digital Servopack series, rated 1.5kW for three-phase AC200V industrial CNC equipment application. The suffix Y16 stands for exclusive special customized program version based on standard CS locked firmware, further modified fixed I/O definition, closed control parameters and exclusive encoder matching protocol specially designated for designated CNC lathe/milling machine OEM matching, cannot be directly replaced by standard CACR-SR15BB1BM or regular CS non-Y16 version without dedicated firmware rewriting by Yaskawa or authorized factory.

Model coding definition: CACR = VS800 CNC dedicated servo series; SR = dual command input hardware supporting ±10VDC analog speed signal and differential pulse position instruction; 15 = matched rated motor power 1.5kW; BB = standard universal main control PCB; 1 = separate power supply structure: three-phase AC200V main power + independent single-phase AC200V control power; CS = basic locked fixed parameter firmware edition; Y16 = secondary customized exclusive program for designated equipment with fixed internal algorithm and signal allocation.

Main application scope: Original matching of special-purpose numerical control machine tools, customized automation machining production lines, dedicated spindle and feed axis motion control equipment, only compatible with Yaskawa specified incremental encoder M/F/S series servo motors pre-defined in Y16 program.

Main circuit input: Three-phase AC 200V~230V, 50/60Hz, allowable input voltage fluctuation range -15%~+10% rated voltage.Control power input: Independent single-phase AC 200V~230V same frequency and voltage tolerance to isolate power grid interference from main power loop fluctuation.Continuous rated output current: 11.7Arms; overload feature: 150% rated current sustainable for 60s, peak 300% overload limited within 3 seconds for startup instantaneous load.Internal modulation mode: IGBT sine wave PWM driving, maximum output carrier frequency 300Hz; DC bus nominal working voltage DC280V~DC320V, P and BN terminals reserved for external regenerative braking resistor connection for frequent deceleration and emergency stop working condition.

Feedback interface CN2 exclusively supports incremental encoder specified by Y16 custom program, absolute encoder wiring and battery backup circuit are cancelled in hardware definition of Y16 edition. RS422 serial communication only supports real-time running data reading and fault code query, parameter upload/download and program modification function are fully locked by Y16 customized firmware.

All core control parameters including position loop gain, speed loop PI parameter, acceleration/deceleration slope, anti-vibration notch filter value are solidified and locked in Y16 factory program, local parameter modification via panel or upper computer communication is disabled completely; servo auto-tuning function is shielded by default setting.

CN1 optocoupler digital I/O pins follow fixed Y16 OEM definition, input/output function cannot be reassigned by parameter setting, emergency stop, servo enable, fault output, positioning complete signal definition is solidified to match host CNC controller electrical logic. Default working control mode is preset as analog speed + pulse position compound control fixed by Y16 firmware without free mode switching permission.

Encoder pulse resolution is factory preset corresponding to matched exclusive 1.5kW servo motor, replacement with non-Y16 specified motor will immediately trigger encoder disconnection or parameter mismatch alarm code. Partial internal anti-interference filter parameter is optimized for designated machine’s mechanical resonance characteristic exclusively for Y16 customization.

Permitted operating ambient temperature: 0℃ ~ +55℃; storage ambient temperature: -20℃ ~ +70℃; working relative humidity range 5%~80%RH without condensation inside unit. Derate 10% continuous output load when installation altitude exceeds 1000m above sea level, no allowable application over 2000m altitude.

Vibration resistance standard: 10~55Hz vibration with single amplitude 0.5mm; installation must be vertical upright inside control cabinet, keep more than 50mm empty ventilation space at top and bottom of drive for radiator heat dissipation; protection grade IP20 only for indoor cabinet installation, prohibited for open-air dusty, oily and corrosive gas environment.

Pre-operation safety regulation: Cut off all AC input power and wait minimum 15 minutes for internal DC bus capacitor full discharge before opening upper cover or hot plug CN1/CN2 connectors; live plugging of encoder and I/O terminals is strictly forbidden to avoid hardware burnout.

Net weight of unit is approximately 3.3kg with built-in dynamic braking circuit for low-load regular deceleration; external braking resistor must be wired between P and BN terminals under heavy cyclic frequent stop-load operating environment.

R/S/T terminals: Three-phase main AC power input wiring port; U/V/W terminals: three-phase power output connecting to servo motor stator winding; P/BN: external regenerative brake resistor connecting terminals.CN1: 20-pin opto-isolated digital I/O port with fixed Y16 exclusive pin assignment; CN2: dedicated incremental encoder feedback connector matching specified motor only; front panel seven-segment LED displays real-time running state and fault alarm codes of VS800 series standard definition.

Integrated multi-protection mechanism including overcurrent protection, DC bus overvoltage protection, DC bus undervoltage protection, drive internal overheat protection, encoder signal loss protection, motor continuous overload protection and CPU operation abnormal protection. Last ten historical fault codes are stored in non-volatile memory inside drive, fault data will not be lost after power cut or manual fault reset operation.

Overheat protection will automatically trigger shutdown when internal radiator temperature exceeds 90℃; overvoltage alarm activates during rapid deceleration without matched external braking resistor; overload protection judges abnormal load based on continuous output current cumulative calculation.

Only identical full model CACR-SR15BB1CS-Y16 can realize plug-and-play direct replacement; standard BM general version or ordinary CS non-Y16 servo cannot substitute directly due to different locked customized program and fixed I/O logic, replacement requires manufacturer to rewrite exclusive Y16 firmware program into new drive hardware.

Daily pre-start maintenance item: check fastening of power cable terminals and CN1/CN2 connector lock; clean radiator fin dust every three to six months to prevent overheat stop caused by poor heat dissipation; factory full parameter initialization reset operation is prohibited on Y16 unit, reset will erase all OEM preset Y16 fixed parameters leading to abnormal machine linkage or no-operation fault.

Overheat alarm: mainly caused by blocked radiator dust, insufficient cabinet ventilation or long-term continuous over-rated load, solve by dust cleaning or reducing actual mechanical payload.Encoder fault: induced by loose CN2 connector, damaged feedback cable or mismatched non-Y16 specified servo motor, fix via wiring check or replacing original matched incremental motor.Deceleration overvoltage fault: eliminate by installing qualified external braking resistor between P and BN terminals.Parameter write failure alert: normal software lock protection feature when attempting to modify Y16 locked core parameters, no hardware damage needed for repair.Overload code trigger: mechanical transmission jamming or excess payload exists on motor output shaft, inspect mechanical structure and cut down working load properly.

1 = Instant overcurrent fault2 = Main power circuit abnormality3 = DC bus overvoltage protection4 = DC bus undervoltage protection5 = Drive internal overheat shutdown6 = Encoder feedback disconnection error7 = Continuous motor overload protectionA = Main control CPU operational failureC = External emergency stop signal input triggered