CACR-SR10SB1AF-Y378
CACR stands for Yasnac VS800 full digital AC servo amplifier designed for closed-loop feed axis control of CNC machine tools.
SR supports three parameter-selectable control modes: ±10VDC analog speed control, torque control and parameter-enabled position control.
10 indicates rated matching motor power 1.0kW with continuous rated output current 7.6Arms under AC200V input class.
SB refers to compact PCB and housing with built-in standard dynamic braking circuit, differing from BB/BY/BZ series internal circuit structure.
1 defines power supply specification: three-phase AC200~230V main power plus independent single-phase AC200~230V separated control power supply.
A means only ±10VDC analog speed/torque command input; no onboard differential pulse receiving hardware for pulse positioning.
F is factory-locked firmware; core loop gain, encoder and partial I/O parameters are pre-set and write-protected from factory modification.
-Y378 is exclusive OEM customized suffix for specific machine tool. The factory fixes CN1 I/O definition, servo loop gains and encoder matching parameters to match original equipment; all customized core parameters are permanently locked and full factory parameter reset is prohibited.
Description
1. MODEL CODE DEFINITION
CACR stands for Yasnac VS800 full digital AC servo amplifier designed for closed-loop feed axis control of CNC machine tools.SR supports three parameter-selectable control modes: ±10VDC analog speed control, torque control and parameter-enabled position control.10 indicates rated matching motor power 1.0kW with continuous rated output current 7.6Arms under AC200V input class.SB refers to compact PCB and housing with built-in standard dynamic braking circuit, differing from BB/BY/BZ series internal circuit structure.1 defines power supply specification: three-phase AC200~230V main power plus independent single-phase AC200~230V separated control power supply.A means only ±10VDC analog speed/torque command input; no onboard differential pulse receiving hardware for pulse positioning.F is factory-locked firmware; core loop gain, encoder and partial I/O parameters are pre-set and write-protected from factory modification.-Y378 is exclusive OEM customized suffix for specific machine tool. The factory fixes CN1 I/O definition, servo loop gains and encoder matching parameters to match original equipment; all customized core parameters are permanently locked and full factory parameter reset is prohibited.
2. ELECTRICAL SPECIFICATIONS
Main input power: three-phase AC200V~230V, allowable voltage fluctuation -15%~+10%, compatible with 50Hz/60Hz industrial power grid. Control power requires separate single-phase AC200~230V independent wiring to isolate surge interference from main circuit.Continuous rated output current:7.6Arms; 150% overload can run continuously 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 reserved for external regenerative braking resistor connection under frequent rapid deceleration and heavy-duty machining.IGBT sine-wave PWM modulation is adopted with maximum output frequency up to 300Hz; encoder configuration data is locked by Y378 OEM customized program.
3. INSTALLATION & ENVIRONMENT REQUIREMENT
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 required.Max allowable installation altitude below 1000 meters above sea level; load derating required when installed over 1000m elevation. Anti-vibration specification:10Hz~55Hz with 0.5mm single amplitude during stable operation; net weight approx 3.0kg.
4. CONTROL PERFORMANCE AND FEATURES
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 frequent start-stop cycles.Only ±10VDC analog command input is available due to A-type hardware without pulse input channel; position control function can be enabled via parameters while core position-related parameters are locked by Y378 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 permitted for slight on-site mechanical matching; all CN1 I/O definition is fixed by Y378 preset OEM logic and cannot be arbitrarily redefined via parameters.Onboard RS422 serial communication supports real-time runtime data reading and historical fault record inquiry; locked Y378 customized parameters cannot be modified through communication cable.
5. TERMINAL & CONNECTOR DESCRIPTION
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 regenerative energy dissipation during repeated fast deceleration and emergency stop.CN1: opto-isolated digital I/O terminal block with fixed OEM signal definition under Y378 customization, users are prohibited to alter I/O function allocation freely.CN2: dedicated connector exclusively for incremental encoder feedback cable.
6. PROTECTION FUNCTIONS
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; Y378 OEM preset parameters will not be erased 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 cutting and repeated emergency stop working conditions.
7. REPLACEMENT INSTRUCTION
CACR-SR10SB1AF-Y378 is exclusive OEM customized servo drive matched with designated CNC equipment and corresponding 1.0kW incremental encoder servo motor. Standard CACR-SR10SB1AF without Y378 suffix cannot be directly substituted due to mismatched locked customized parameters and fixed I/O definition; only identical full part number CACR-SR10SB1AF-Y378 supports plug-and-play replacement.
8. ROUTINE MAINTENANCE GUIDE
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 Y378 OEM customized data and subsequent machine malfunction.
9. COMMON FAULT TROUBLESHOOTING
Overheat alarm mainly caused by radiator dust clogging, poor cabinet ventilation or long-term overloaded 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 Y378 locked core parameters belongs to normal OEM protection design instead of drive hardware damage. Overload alarm triggers when actual mechanical load exceeds motor rated output; inspect stuck transmission mechanism or reduce processing load accordingly.
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