CACR stands for Yasnac VS800 full digital AC servo amplifier designed for CNC machine and automated production equipment closed-loop control.SR supports three parameter-switchable control modes: ±10VDC analog speed control, torque control and parameter-enabled pulse position control.12 indicates rated matching motor power 1.2kW with continuous rated output current 11.7Arms under AC200V input class.T denotes general CNC standard PCB structure, different internal circuit from SZ robot-specified series servo drives.B means dual command input hardware, supporting both ±10VDC analog speed/torque signal and differential line-driver pulse position input.5 represents customized control power peripheral circuit with partial basic parameters pre-set at factory.B is standard incremental encoder feedback circuit matching Yaskawa regular servo motors.M is OEM customized firmware suffix; factory fixes partial loop gain, CN1 I/O assignment and related application parameters, these customized core parameters are write-protected and cannot be modified arbitrarily by users.

Main input power: three-phase AC200V~230V, allowable voltage fluctuation -15%~+10%, compatible with 50Hz/60Hz industrial power grid. Control power adopts factory-customized wiring specification based on code 5 design.Continuous rated output current:11.7Arms; 150% overload can continuously run 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 for frequent rapid deceleration and heavy-load cutting.IGBT sine-wave PWM modulation is adopted with maximum output frequency up to 300Hz.

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 3.6kg.

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.B-type dual input hardware allows free switching between analog command and differential pulse position command via parameter setup.Partial auto-tuning available: full automatic motor parameter identification is restricted for M customized firmware; only minor fine adjustment of auxiliary gain is permitted for on-site mechanical matching. Core customized parameters preset by OEM are locked and uneditable; partial standard parameters remain adjustable for basic commissioning.Onboard RS422 serial communication supports real-time runtime data reading and historical fault record inquiry; locked OEM customized parameters cannot be revised 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 regenerative energy dissipation during repeated fast deceleration and emergency stop.CN1: opto-isolated digital I/O terminal block with fixed OEM preset signal definition for partial terminals under M customized firmware; limited adjustable range for remaining I/O points.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; OEM preset M 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-SR12TB5BM is OEM customized servo unit with exclusive 5-type control circuit and M locked firmware. Standard CACR-SR12TB0AF without customized code cannot be directly substituted due to mismatched preset parameters and partial fixed I/O definition; only identical full part number CACR-SR12TB5BM 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 M OEM customized data and abnormal equipment operation.

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 M-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 stuck transmission mechanism or reduce processing load accordingly.