Operation principle and hardware description 41
14. Control unit (BCU-x2) of the inverter unit
15. AC supply
16. Module control
17. Motor out
18. USB connection
19. I/O connections of the supply unit:
• XRO1: Running
• XRO2: Fault
• XRO3: Main circuit breaker, cabinet fan control
• DI1: Temperature fault
• DI2: Run enable
• DI3: Main breaker closed
• DI4: Auxiliary circuit breaker fault
• DI5: Earth fault monitoring
• DI6: Reset
• DIIL: Emergency stop
20. I/O connections of the inverter unit:
• XRO1: Ready
• XRO2: Running
• XRO3: Faulted
• DI1: Start / Stop
• DI2: Forward / Reverse
• DI3: Reset
• DI4: Acceleration / deceleration time set
• DI5: Constant speed
• DI6: Not specified
• DIIL: Interlock
# Description