Warning and alarm displays, Description and remedy, System monitoring – Bell & Gossett 176R0649C Technologic 502 Series Pump Controller User Manual
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Warning and Alarm Displays
A warning will flash on display line 4 along with the
warning number.
An alarm will flash on display line 4 along with the
alarm number.
Section 8 Warnings and Alarms
Description and Remedy
A warning is issued when an alarm condition is
impending.
An alarm is issued when the drive is tripped. The
controller will continue to operate with power removed
from the motor. The motor will coast to a stop. After
a reset, the drive will be ready to start operation
again.
A trip can be reset in any one of three ways:
1) Pressing the RESET key on the keypad
2) Digital reset input command
3) Serial communication reset input command
An alarm may also result in a trip-lock fault. A trip-lock
requires that input power be removed, the cause of
the fault corrected, and input power restored to reset
the drive. Power must be cycled with a trip-lock.
NOTE
c
ycling
powEr
to
tHE
drivE
is
rEquirEd
aftEr
a
trip
-
lock
to
rEstorE
tHE
drivE
to
a
trip
condition
wHEn
paramEtEr
14-20, r
EsEt
f
unctions
,
is
sEt
to
manual
. a
ftEr
cycling
powEr
,
prEss
tHE
rEsEt
kEy
on
tHE
kEypad
to
placE
tHE
drivE
in
run
modE
.
The warnings and alarms definitions on the following
pages will define the condition, explain the probable
cause or troubleshooting procedure, and provide a
remedy.
NOTE
f
ault
l
og
EntriEs
arE
basEd
on
priority
lEvEls
and
may
not
nEcEssarily
bE
in
tHE
ordEr
in
wHicH
tHEy
occurrEd
.
System Monitoring
The variable frequency drive monitors the condition
of its input power, drive output, and motor factors
as well as other system performance indicators.
A warning or alarm may not necessarily indicate a
problem internal to the drive itself. In many cases it
indicates failure conditions from input voltage, motor
load, temperature, pump performance, or other
areas monitored by the drive’s internal logic. Be sure
to investigate those areas exterior to the drive as
indicated in the alarm or warning message. A master
drive in a multiple drive system also conducts limited
monitoring of follower drives, but each drive has its
own internal monitoring capability.