Omron VARISPEED F7 User Manual page 347

Display
EF3
Ext Fault S3
(flashing)
EF4
Ext Fault S4
(flashing)
EF5
Ext Fault S5
(flashing)
EF6
Ext Fault S6
(flashing)
EF7
Ext Fault S7
(flashing)
FBL
Feedback Loss
(flashing)
CE
MEMOBUS Com
Err
(flashing)
BUS
Option Com Err
7
(flashing)
DNE
Drive Not Enable
(flashing)
Ext Run Active
Cannot Reset
CALL
ComCall
(flashing)
FAN
Cooling FAN Err
(flashing)
12
7-
Table 7.2 Alarm Detection
Meaning
External fault at terminal S3
External fault at terminal S4
External fault at terminal S5
External fault at terminal S6
External fault at terminal S7
PID Feedback Lost
This fault occurs when PID feed-
back loss detection is pro-
grammed to alarm (b5-12 = 1)
and the PID feedback fell below
the PID Feedback Loss Detection
Level (b5-13) for the PID Feed-
back Loss Detection Time
(b5-14)
MEMOBUS Communications
Alarm
Detected when control data was
not received correctly for two sec-
onds and H5-04 = 3 and
H5-05 = 1.
Option Communications Alarm
After initial communication was
established, the connection was
lost.
Detected when a multi-function
digital input (H1-01 to H1-05) is
programmed for 6A: Drive
Enable.
The Inverter does not have the
enable command when the RUN
command is applied. This alarm
stops the motor.
Detected when a RESET com-
mand is input while the RUN
command is still active
Communications on Standby
Communication has not yet been
established.
Inverter's Cooling Fan Alarm
An Inverter's cooling fan fault
was detected.
This alarm is detected when
L8-32 is set to 0.
Probable causes
An external fault was input from a
multi-function input terminal
(S3 to S7) that is programmed for
external fault function that alarms
only and continues to run the
Inverter.
PID feedback source (e.g. trans-
ducer, sensor, building automa-
tion signal) is not installed
correctly or is not working
Connection is broken and/or the
master has stopped the communi-
cation.
Connection is broken and/or the
master has stopped the communi-
cation.
Enable command was lost while
the Inverter was running.
The RUN command was applied
prior to the enable signal.
The RUN command has not been
removed and a RESET command
is input by digital input or by the
RESET button on the digital oper-
ator.
Connection was not made prop-
erly or user software was not con-
figured to the proper baud rate or
configuration (e.g. Parity).
The Inverter's cooling fan has
stopped
Corrective Actions
Eliminate the cause of the
external fault condition
Verify Inverter is pro-
grammed to receive the PID
feedback source signal.
Check to ensure the PID feed-
back source is installed and
working properly.
Check the connections and all
user-side software configura-
tions.
Check the connections and all
user-side software configura-
tions.
Check the wiring of the input
terminal and the external
sequence of the enable signal.
Apply and maintain the enable
command before applying the
RUN command.
Remove the RUN signal first
and reset the fault.
Check the connections and all
user-side software configura-
tions.
Replace the cooling fan.