Emerson EV2000 Series User Manual page 91

Phenomena Conditions
Motor stops without
stopping
The drive
command, while
stops during
the drive's "RUN"
operating
LED illuminates
process.
and operates at
zero frequency
The drive does not
work and its "RUN"
The drive
LED is off when the
does not work
"RUN" key is
pressed.
"POWEROFF"
is reported
Transistor or
when the drive
contactor
begin to run
disconnected and
immediately
overload
after
power-on.
Possible reasons of fault
Positive logic: close loop feedback
value >reference
Negative logic: close loop feedback
value <reference
F9.05 is set to 0
Low-voltage compensation is applied
when the drive restarts after power
failure, besides, the AC supply voltage is
too low
Terminal used for coasting to stop is
enabled
The terminal used to prohibit the running
of the drive is enabled.
Terminal used for stopping the drive is
enabled
The drive stops at fixed length
In 3-wire control mode, the terminal
used to control the 3-wire operation is
not closed.
Fault alarm occurs
Virtual terminal of host is set incorrectly
Positive and negative logic of input
terminal are not set correctly
Since the transistor or contactor is
disconnected, the bus voltage drops at
heavier load, therefore, the drive
displays POWEROFF, not E018
message.
EV2000 Series Universal Variable Speed Drive User Manual
Chapter 6 Troubleshooting
Actions
Check the close-loop reference and
feedback
Check the settings of F9.05 and F9.06
Check the settings of restart after power
failure and the AC supply voltage
Check the terminal used for coasting to
stop
Check the terminal
Check the terminal used for stopping the
drive
Check the function of stopping at fixed
length and the actual length
Set and close the terminal
Clear the fault
Disable the function of this terminal or
set it properly via the host or change the
settings of F7.35
Check the settings of F7.35
Run the drive until the transistor or
contactor is connected.
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