Yaskawa iQpump Drive User Manual - Manual (Page 143)

6.3 Alarm Detection
YASKAWA TM.iQp.01 iQpump Drive User Manual 143
6.3 Alarm Detection
The alarms are iQpump drive protection functions that do not operate the fault contact. The iQpump drive will automatically return to its
original status once the cause of the alarm has been removed.
During an alarm condition, the digital operator display flashes and an alarm output is generated at the multi-function outputs (H2-01 to
H2-02) if programmed.
When an alarm occurs, take appropriate corrective action according to the table below.
Table 6.3 Alarm Displays and Processing
Digital
Operator Display
Description Cause Corrective Action
BUS
Option Com Err
Option Communication Error
After initial communication was established, the
connection was lost.
Connection is broken, master has
stopped communicating. Check all connections, verify all
user side software configurations.
CALL
SI-F/G ComCall
Serial communication transmission error.
Communication has not yet been established.
Connection not made properly, user
software not configured to the proper
baud rate or configuration.
Check all connections, verify all
user side software configurations.
EF
External Fault
External fault at terminals S1 and S2
Both the forward and the reverse run commands
are input simultaneously for 500mS or more. This
alarm stops the motor.
An external forward and reverse
command are input simultaneously.
Check external sequence logic.
EF0
Opt External Flt
(Flashing)
Communication Option Card External Fault An external fault condition exists.
Check for an external condition.
Verify the parameters.
Verify communication signal.
EF3
Ext Fault S3
(Flashing)
External Fault at Terminal S3
An external fault condition exists
connected to a multi-function digital
input.
Eliminate the cause of an external
fault condition.
EF4
Ext Fault S4
(Flashing)
External Fault at Terminal S4
EF5
Ext Fault S5
(Flashing)
External Fault at Terminal S5
EF6
Ext Fault S6
(Flashing)
External Fault at Terminal S6
EF7
Ext Fault S7
(Flashing)
External Fault at Terminal S7
Remove the fault from a multi-
function digital input.
DNE
iQpump not Enable
(Flashing)
iQpump enable command missing. The iQpump
does not have the enable command when the run
command is applied.
The Run command has been applied
prior to the enable signal.
Apply the enable command before
applying the run command.
FAN
Cooling Fan Error
Failure of the iQpump internal cooling fan when
L8-32 = 0.
iQpump cooling fan has stopped. Replace the cooling fan.
FBL
Feedback Loss
<0032>
PI Feedback Loss
This fault occurs when PI Feedback Loss Detection
is programmed to fault (b5-12 = 2) and the PI
Feedback < PI Feedback Loss Detection Level (b5-
13) for the PI Feedback Loss Detection Time (b5-
14).
PI feedback source (e.g. transducer,
sensor, building automation signal) is
not installed correctly or is not
working.
Verify iQpump is programmed to
receive the PI feedback source
signal.
Check to ensure the PI feedback
source is installed and working
properly.
Check the motor for a phase-to-
phase short.
Check the iQpump for a phase-to-
phase short at the output.
Verify C1-01 to C1-06 are set
correctly.
Check load conditions.