Digital Operator Display; Check Points At Test Run - ACP Speecon 7200M3 Manual

4. 5.

1.5.6 Check Points at Test Run

The following describes the checkpoints at test run. If any fault occurs, recheck the wiring and load status.
For details, refer to Par. 1.7.3 "Corrective Action for Motor Faults" onpage31.
• Motor rotates smoothly.
• Motor rotates in the proper direction.
• Motor does not have any abnormal vibration or beat.
• Acceleration or deceleration goes smoothly.
• Current suitable for load flows.
• Status display LED or digital operator display is proper.
(1) The motor does not start up if both FWD and REV run signals are turned ON simultaneously. If they
are turned ON simultaneously during run, the motor stops according to the stopping method selection of
constant (Pn-01) 3 rd digit. (Deceleration to a stop is selected for factory setting.)
(2) When output frequency is reduced to 1.5 Hz (preset value prior to shipping) at deceleration, the DC
injection braking operates for 0.5 second (preset value prior to shipping) and metallic noise is generated
by the motor. However, this noise is normal. To eliminate this noise, refer to "DC INJECTION
BRAKING" on page 80.
(3) If a fault occurs during acceleration or deceleration and the motor coasts to a stop, check the motor stop
and then the following items. For details, refer to Par. 1.7 "FAULT DISPLAY AND
TROUBLESHOOTING" on page 26.
• Load is not excessively large.
• Accel/decel time is long enough for load.
(4) Resetting must be performed by fault reset input signal (or SHIFT key of the digital operator) or by
turning OFF the power supply.
(5) In a sequence where run/stop is performed by the magnetic contactor for main circuit power supply, the
repeating time (power ON interval to the inverter) must be one hour or more.
CAUTIONS
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