CACR-SR15BB1ES belongs to YASKAWA Yasnac VS800 full digital AC Servopack series with rated power 1.5kW for 200V grade industrial control. ES is a special OEM customized firmware version different from standard open-parameter BM model, with factory preset partial fixed control parameters and dedicated I/O logic designed for matching exclusive CNC equipment and customized automation machinery.

Model code explanation: CACR stands for VS800 servo series developed for CNC feed axis control. SR means hardware is equipped with dual command receiving circuit for ±10VDC analog signal and differential pulse position instruction. Number 15 represents compatible rated motor power 1.5kW. BB refers to standard universal main control PCB and common I/O peripheral circuit layout. Digit 1 indicates separated power supply structure with three-phase AC200~230V main power plus independent single-phase AC200V control power. ES denotes exclusive customized fixed firmware with specified encoder matching rule and pre-set partial closed parameters. This drive only matches designated incremental servo motors confirmed under ES program; regular standard CACR-SR15BB1BM cannot directly replace this model without dedicated ES firmware refreshment from manufacturer.

Main circuit input is three-phase AC200V~230V at 50Hz or 60Hz, allowable input voltage fluctuation from minus fifteen percent to plus ten percent of rated value. Control power adopts independent single-phase AC200~230V to isolate interference caused by main power voltage variation.

Continuous rated output current is 11.7A RMS. Overload specification is set as 150% rated current for continuous 60-second running and 300% peak overload limited within 3 seconds during motor startup. The servo uses IGBT sine-wave PWM modulation with maximum output frequency 300Hz. Nominal DC bus voltage ranges DC280V to DC320V, terminals P and BN are reserved for external regenerative braking resistor wiring for frequent deceleration and emergency stop application. Protection grade is IP20 and only permits vertical cabinet installation, net weight of unit is about 3.3 kilograms. CN2 feedback interface is exclusively for specified incremental encoder without internal battery circuit for absolute encoder connection.

Key customized electrical feature for ES version: partial core loop parameters including partial speed loop gain and fixed encoder resolution are locked inside firmware, users cannot modify these values via local parameter setup; available adjustable parameters are limited to a small range defined by factory setting. Default control mode is pre-fixed by factory programming, mode switching via parameter modification is unavailable. RS422 communication only supports reading running data and fault history, locked customized parameters cannot be uploaded or downloaded.

Operating ambient temperature ranges from 0°C to +55°C, storage temperature covers -20°C to +70°C. Working environment relative humidity keeps 5%~80%RH with no condensation inside the unit. Reduce continuous output load when installation altitude exceeds 1000 meters above sea level.

Applicable vibration working condition is 10Hz~55Hz with single vibration amplitude 0.5mm. Reserve more than 50mm empty space at top and bottom inside control cabinet to guarantee effective heat dissipation. Cut all AC power and wait minimum 15 minutes for full discharge of internal DC bus capacitor before disassembling cover or plugging CN1, CN2 connectors; hot plug under powered condition is strictly forbidden.

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

CN1 is opto-isolated digital I/O connector with fixed ES OEM pin definition, most I/O signal functions cannot be redefined through parameter change. CN2 is dedicated incremental encoder port only compatible with original designated servo motor under ES specification. Front seven-segment LED displays real-time operating status and standard VS800 series fault codes.

Full protection functions include output overcurrent, DC bus overvoltage, DC bus undervoltage, drive overheat, encoder disconnection, motor overload and CPU abnormal protection. Latest ten fault records are permanently stored inside memory without data loss after power off or fault reset.

Internal dynamic brake circuit is equipped for regular low-load deceleration energy consumption; external braking resistor must be mounted between P and BN terminals under heavy cyclic load and frequent emergency stop working scene.

Only identical CACR-SR15BB1ES can realize direct plug-and-play replacement. Standard BM or other CS/BF variant cannot substitute directly due to different ES locked firmware and fixed I/O allocation, replacement requires factory to rewrite ES dedicated program.

Check tightness of power wiring and CN1/CN2 connectors before each startup, clean radiator dust every three to six months to avoid overheat shutdown caused by poor heat dissipation. Full factory parameter reset is prohibited for ES model, reset operation will erase OEM preset fixed parameters and lead to abnormal machine operation.

Overheat alarm is caused by clogged radiator dust, poor cabinet ventilation or long-time overload; solve via cleaning cooling fin or lowering actual running load. Encoder fault appears from loose CN2 plug, damaged feedback cable or mismatched non-designated motor; check wiring and replace matched original incremental motor.

Deceleration overvoltage fault can be solved by installing external braking resistor between P and BN terminals. Parameter write failure occurs when modifying ES locked parameters, which belongs to normal software protection not hardware fault. Overload alarm comes from mechanical jamming or excessive payload; inspect mechanical structure and cut down equipment load properly.

1 = Output overcurrent fault2 = Main circuit hardware abnormality3 = DC bus overvoltage protection triggered4 = DC bus undervoltage alarm5 = Drive internal overheat protection6 = Encoder disconnection fault7 = Motor continuous overload protectionA = Main CPU operation failureC = External emergency stop input activated