4-2 Function Mode 4 „ Alarm Output for Momentary Power Interruption/Undervoltage During Stop •Use b004 to select whether to enable an alarm output in case of momentary power interruption or undervoltage. •An alarm output continues while Inverter control power supply remains. Alarm output for momentary power interruption/undervoltage during stop Standard (examples 5 to 7) Operation where DC (P-N) is supplied to control power supply terminal Ro-To (examples 8 to10) Functions (Example 5) b004:
00 Inverter is stopped Inverter is running Power supply ON OFF ON OFF ON OFF ON OFF ON OFF Power supply ON OFF ON OFF ON OFF ON OFF ON OFF RUN command Inverter output RUN command Inverter output Alarm Alarm Signal during momentary power interruption (IP) Signal during momentary power interruption (IP) (Example 6) b004: 01 Power supply Inverter is stopped Inverter is running ON OFF ON OFF ON OFF ON OFF ON OFF Power supply ON OFF ON OFF ON OFF ON OFF ON OFF RUN command RUN command Inverter output Alarm Inverter output Alarm Signal during momentary power interruption (IP) Signal during momentary power interruption (IP) (Example 7) b004:
02 Power supply ON OFF ON OFF ON OFF ON OFF ON OFF Inverter is stopped Power supply ON OFF ON OFF ON OFF ON OFF ON OFF Inverter is running RUN command RUN command Inverter output Alarm Inverter output Alarm Signal during momentary power interruption (IP) Signal during momentary power interruption (IP) 4-44 (Example 3) Motor frequency (rpm) > b007 (Example 4) Motor frequency (rpm) Free running t0 t2 0-Hz start Free running t0 t2