CACR stands for Yasnac VS800 full digital AC servo amplifier customized exclusively for robot joint closed-loop motion control.SR provides three parameter-switchable control modes: ±10VDC analog speed control, torque control and parameter-enabled position control.10 means rated matched motor power 1.0kW with continuous rated output current 7.6Arms under AC200V input class.SZ is robot-dedicated PCB and housing structure with exclusive internal circuit design, structurally different from standard SB/BB/BY series servo drives.1 defines power supply specification: three-phase AC200~230V main power plus independent single-phase AC200~230V separated control power supply.S indicates only ±10VDC analog speed/torque command input; no onboard differential pulse receiving hardware for pulse positioning signal access.F is factory locked base firmware; basic loop gain and encoder fundamental parameters are preset and write-protected from factory modification.-Y903 is unique OEM customized suffix for specified robot equipment. Factory pre-calibrates servo loop gains, fixes CN1 I/O assignment and encoder matching parameters as per original robot design; all Y903 exclusive customized parameters are permanently locked, and full factory parameter initialization is strictly prohibited.

Main input power: three-phase AC200V~230V, allowable voltage fluctuation -15%~+10%, compatible with 50Hz/60Hz industrial power grid. Control power needs independent single-phase AC200~230V separated wiring to isolate surge interference from main power circuit.Continuous rated output current:7.6Arms; 150% overload can sustain continuous operation for 60 seconds, 300% instantaneous peak overload limited within 3 seconds for motor startup acceleration. Normal DC bus operating voltage DC280V~DC320V; terminals P and BN are reserved for external regenerative braking resistor wiring for frequent rapid deceleration and heavy-load robot cycling motion.IGBT sine-wave PWM modulation is adopted with maximum output frequency up to 300Hz; encoder configuration parameters are locked inside Y903 customized program.

Operating ambient temperature:0℃~+55℃; storage temperature: -20℃~+70℃. Working relative humidity 5%~80%RH without dew condensation; protection grade IP20, vertical upright installation inside electrical cabinet is mandatory.Full-load operation allowed below 1000 meters above sea level; load derating is required when installed over 1000m elevation. Anti-vibration standard:10Hz~55Hz with 0.5mm single amplitude during stable operation; net weight approx 3.0kg.

Speed adjustment ratio reaches 1:5000, full-load steady speed deviation controlled within ±0.01%. Built-in digital notch filter suppresses mechanical resonance and low-speed crawling during repeated start-stop and reciprocating robot joint movement.S-type hardware only accepts ±10VDC analog command without built-in pulse input channel; position control function can be enabled via parameter setup while core position relevant parameters are locked by Y903 customized firmware.Auto-tuning function is partially restricted: complete full automatic motor parameter identification is disabled, only minor fine-tuning of partial auxiliary gain is available for slight on-site mechanical matching; all CN1 I/O definition follows fixed Y903 OEM robot logic and cannot be arbitrarily modified via parameters.Onboard RS422 serial communication supports real-time runtime data reading and historical fault record inquiry; locked Y903 customized parameters cannot be edited through communication cable.

R/S/T: three-phase main AC power input terminals; U/V/W: three-phase output terminals connecting servo motor stator cable; P/BN: external regenerative brake resistor wiring terminals for energy dissipation during frequent fast deceleration and emergency stop of robot axes.CN1: opto-isolated digital I/O terminal block with fixed Y903 exclusive OEM signal definition under firmware lock; users are forbidden to alter I/O function allocation freely.CN2: dedicated connector exclusively for incremental encoder feedback cable.

Complete built-in protection includes overcurrent protection, DC bus overvoltage/undervoltage protection, drive overheat protection, encoder disconnection protection and motor overload protection. The servo automatically stores latest 10 groups of historical fault codes for maintenance inspection; Y903 OEM preset parameters remain unchanged after power-off or fault reset operation.Built-in standard dynamic braking circuit handles regular deceleration energy consumption; external regenerative resistor must be installed between P and BN terminals under long-time heavy-load and frequent emergency stop working conditions.

CACR-SR10SZ1SF-Y903 is dedicated robot OEM customized servo with unique SZ hardware and Y903 permanently locked parameters. Ordinary CACR-SR10SZ1SF without Y903 suffix or standard SB series servo cannot be directly substituted due to mismatched I/O definition and gain setting; only identical full part number CACR-SR10SZ1SF-Y903 supports plug-and-play replacement.

Check wiring tightness of power cables, motor cable and CN1/CN2 connectors before every startup to eliminate poor-contact-induced faults. Clean radiator fin dust every 3~6 months to guarantee heat dissipation efficiency and avoid overheat alarm.Cut off all AC power supply and wait over 15 minutes for internal DC bus capacitor full discharge before opening drive casing for maintenance to prevent electric shock hazard. Random full factory parameter reset is strictly forbidden to avoid loss of Y903 OEM customized data and abnormal robot operation.

Overheat alarm mainly caused by radiator dust clogging, poor cabinet ventilation or long-term overloaded robot running; encoder fault alarm mostly triggered by loose CN2 plug or damaged feedback cable.Overvoltage alarm occurs during frequent heavy-load rapid deceleration; resolve by installing external regenerative resistor between P and BN terminals. Parameter write failure when modifying Y903 locked core parameters belongs to normal OEM firmware protection instead of drive hardware damage. Overload alarm triggers when actual mechanical load exceeds motor rated output; inspect robot transmission jamming or reduce operating load accordingly.