RLC-
VU006A-E4
nstallation El
ctrical
Table 6. Chiller events/status descriptions
vent
Stat
escri
tio
larm - Latchin
This output is true whenever there is any active dia
nostic that requires a manual
reset to clear, that effects the Chiller, the Circuit, or an
of the Com
ressors on a
ircuit. This classifi cation does not include informational dia
nostics.
l
rm - A
t
Rese
This output is true whenever there is any active dia
nostic that could automatically
lear, that effects the Chiller, the Circuit, or an
of the Com
ressors on a circuit.
This classifi cation does not include informational dia
nostics. If all of the auto
resettin
dia
nostics were to clear, this output would return to a false condition.
l
r
This output is true whenever there is any dia
nostic effectin
any component,
whether latchin
or automatically clearin
. This classifi cation does not include
informational dia
nostics.
arnin
This output is true whenever there is any informational dia
nostic effectin
any
omponent, whether latchin
or automatically clearin
.
Chiller Limit M
e This output is true whenever the chiller has been runnin
in one of the Unloadin
t
es of limit modes
Condenser, Eva
orator, Current Limit or Phase Imbalance
imit) continuously for the last 20 minutes. A
iven limit or overlappin
of different
limits must be in effect continuously for 20 minutes prior to the output becomin
true. It will become false, if no Unload limits are
resent for 1 minute. The fi lter
prevents short duration or transient repetitive limits from indicatin
. The chiller
is considered to be in a limit mode for the
ur
oses of front
anel dis
la
and
nnunciation, only if it is fully inhibitin
loadin
by virtue of bein
in either the
hold” or “forced unload” re
ions of the limit control, excludin
the “limited
loadin
re
ion”. (In previous desi
ns, the “limit load” re
ion of the limit control
was included in the criteria for the limit mode call out on the front
anel and
nnunciation out
uts
ompressor Runnin
The output is true whenever any compressors are started or runnin
on the
hiller and false when no compressors are either startin
or runnin
on the chiller.
This status ma
or ma
not refl ect the true status of the com
ressor in Service
um
down if such a mode exists for a
articular chiller.
Chiller He
Press
re Relie
e
uest Rela
This relay output is ener
ized anytime the chiller is runnin
in one of the followin
modes; Ice Makin
Mode or Condenser Pressure Limit Control Mode continuously
for the duration s
ecifi ed b
the Chiller Head Relief Rela
Filter Time. The Chiller
ead Relief Relay Filter Time is a service setpoint. The relay output is de-ener
ized
n
time the chiller exits all above modes continuousl
for the duration s
ecifi ed b
the same Chiller Head Relief Rela
Filter Time.
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