CACR-SR15BB1AF
June 04, 2026

CACR-SR15BB1AF

WARNING: Disconnect all AC power and wait no less than 15 minutes for full discharge of internal DC bus capacitor before removing drive cover to prevent electric shock hazard. Apply only rated three-phase AC200~230V input voltage; improper supply voltage will permanently damage main power circuit. Connect drive protective earth terminal reliably to equipment PE ground with grounding resistance below 10 ohms. Never plug or unplug CN1 and CN2 connectors while power is switched on. Avoid continuous overload exceeding 150% rated current over 60 seconds.

Description

1. SAFETY PRECAUTIONS

WARNING: Disconnect all AC power and wait no less than 15 minutes for full discharge of internal DC bus capacitor before removing drive cover to prevent electric shock hazard.
Apply only rated three-phase AC200~230V input voltage; improper supply voltage will permanently damage main power circuit.
Connect drive protective earth terminal reliably to equipment PE ground with grounding resistance below 10 ohms.
Never plug or unplug CN1 and CN2 connectors while power is switched on.
Avoid continuous overload exceeding 150% rated current over 60 seconds.

2. MODEL CODE DEFINITION

CACR stands for Yasnac VS800 full digital AC servo amplifier for CNC and general automation equipment.
SR supports dual control input including ±10VDC analog speed/torque command and differential line-driver pulse position command, switching available via internal parameter setup.
15 indicates rated power 1.5kW under AC200V class, rated continuous output current is 9.7Arms.
BB means standard universal main circuit PCB; first B refers to standard factory base parameter layout, second B represents general-purpose I/O peripheral circuit without OEM customized fixed hardware.
1 denotes standard AC200V power input specification.
AF is standard universal incremental encoder matching circuit with default factory I/O definition, non-locked standard firmware with all parameters editable by end user.

3. ELECTRICAL SPECIFICATIONS

Main power input is three-phase AC200V~230V with permissible voltage fluctuation from minus 15% to plus 10%, compatible with 50Hz and 60Hz industrial frequency. Control power uses independent single-phase AC200V supply.
Overload performance: 150% rated current can continuously run for 60 seconds, 300% instantaneous peak overload is limited within 3 seconds during motor startup.
Nominal DC bus working voltage ranges DC280V to DC320V; terminals P and BN are prepared for external regenerative braking resistor wiring.
The drive adopts IGBT sine-wave PWM modulation with maximum output frequency 300Hz. Net unit weight is approximately 3.4kg and protection grade is IP20 for vertical cabinet installation only.

4. INSTALLATION AND ENVIRONMENT REQUIREMENT

Operating ambient temperature ranges from 0℃ to +55℃, storage temperature is between -20℃ and +70℃. Working ambient humidity maintains 5%~80%RH without condensation. Reduce rated output power if mounting altitude is higher than 1000 meters above sea level.
Anti-vibration standard: 10~55Hz with single amplitude 0.5mm under normal running state. Reserve at least 50mm ventilation gap on upper and lower sides of drive during cabinet installation for heat dissipation.

5. TERMINAL AND CONNECTOR DESCRIPTION

R/S/T terminals are three-phase main AC power input; U/V/W terminals connect three-phase power cable of servo motor.
P and BN terminals are used for external regenerative braking resistor connection to consume surplus energy during rapid deceleration and emergency stop.
CN1 is opto-isolated digital I/O terminal block with factory default signal assignment, all I/O functions can be freely redefined by modifying internal parameters.
CN2 is standard universal incremental encoder connector, applicable for regular Yaskawa incremental feedback servo motors.
Front panel seven-segment LED displays real-time operating status and numerical fault codes.

6. CONTROL PERFORMANCE AND MAIN FUNCTIONS

Speed adjustment ratio reaches 1:5000, full-load speed fluctuation is controlled within ±0.01%. Built-in digital notch filter effectively suppress mechanical resonance and low-speed crawling during frequent start-stop cycles.
Users can switch between analog command mode and differential pulse position mode flexibly via parameter modification.
As standard AF version, all internal parameters are fully adjustable without firmware lock; complete motor auto-tuning function and full factory parameter reset function are available for on-site debugging.
Onboard RS422 serial communication supports real-time running data monitoring, full parameter upload/download and inquiry of latest ten groups of historical fault records.

7. INTEGRATED PROTECTION FUNCTIONS

Complete protection covers overcurrent, DC bus overvoltage, DC bus undervoltage, drive overheat, encoder disconnection, motor overload and CPU abnormal operation protection. The drive automatically stores recent ten fault codes and fault data will not disappear after power off or fault reset.
Internal dynamic brake circuit is integrated for regular deceleration energy dissipation; external regenerative resistor must be installed between P and BN terminals when equipment works under heavy cyclic load and frequent emergency stop conditions.

8. REPLACEMENT GUIDELINE

CACR-SR15BB1AF is standard universal servo drive. Direct plug-and-play replacement is available with same full model CACR-SR15BB1AF. Similar power standard models like CACR-SR15BA1AF can be used as alternative after full parameter reset and motor auto-tuning. Customized TZ series or Y-suffix locked parameter drives cannot be directly substituted without modification.

9. ROUTINE MAINTENANCE INSTRUCTION

Check tightness of power wiring, CN1 and CN2 connectors before every equipment startup to avoid poor-contact induced alarms. Clean dust on radiator cooling fins every three to six months to guarantee heat dissipation and prevent overheat shutdown.
Cut off all AC power supply and wait more than 15 minutes for capacitor full discharge before opening drive housing for maintenance. Full factory parameter initialization is permitted for this standard model during replacement commissioning.

10. COMMON FAULT TROUBLESHOOTING

Overheat alarm occurs mainly due to blocked radiator dust, poor cabinet ventilation or continuous overloaded operation; solve by cleaning cooling system or lowering running load.
Encoder fault alarm results from loose CN2 plug, damaged feedback cable or mismatched motor encoder; inspect wiring and matching motor model.
Overvoltage alarm during rapid deceleration can be fixed by installing external regenerative braking resistor across P and BN terminals.
Parameter write failure rarely happens on standard BB1AF model, mostly caused by hardware damage if occurs.
Overload alarm is triggered by mechanical transmission jamming or excessive working load; check mechanical structure and reduce equipment payload accordingly.

11. LED FAULT CODE DEFINITION

1 stands for overcurrent fault; 2 means main circuit abnormal; 3 for DC bus overvoltage; 4 for DC bus undervoltage; 5 for drive overheat; 6 for encoder disconnection; 7 for motor overload; A for CPU operation fault; B for parameter mismatch error; C for external emergency stop input activated.


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