Page 17
ALARM TYPE AND ACTION
Caution: In any critical application where failure could cause expensive prod-
uct loss or endanger personal safety, a redundant limit controller is required.
The 32A Series allows Set Point 1 (and Set Point 2 is equipped) to operate as limit or alarm type out-
puts. This function is available on all outputs except the proportional current (output type 5). To enable
a set point output to act as an alarm or limit,
Out1
(for SP1) or
Out2
(for SP2, if equipped) should be
set for
OnOf
.
When
Out1
and / or
Out2
are set to
OnOF
, then the alarm function menu items will appear in the
Secure Menu for the selected set point(s).
If the Alarm Programming code in the model number is set to 1, then set point 2 is pre-programmed
as an alarm. If the alarm Programming code in the model number is set to 0 and the last number of
the model number is not 0 then the second set point is pre-programmed as a cooling output. This pro-
gramming may be changed in the field with the Factory Default procedure.
When setting
SP2
value (
S2t
=
AbS
) or the
ALLO
and
ALHi
values (
ALt
=
AbS
) for an absolute alarm,
simply set the value at which the alarm is to occur.
When setting
SP2
value (
S2t
=
dE
) or the
ALLO
and
ALHi
values (
ALt
=
dE
) for a deviation alarm,
set the difference in value from the Set Point 1 (
SP1
) desired. For example if a low alarm is required
to be 5 degrees below the
SP1
, then set
SP2
or
ALLO
to
-5
. If a high alarm is required 20 degrees
above the
SP1
, then set
SP2
or
ALHi
to
+20
. If
SP1
is changed, the alarm (
SP2
,
ALLO
,
ALHi
) will
continue to hold the same relationship as originally set.
When Set Point Power Interrupt (
S#Pi
) or Alarm Power Interrupt (
ALPi
), is programmed
ON
and Set
Point Reset (
S#rE
) or Alarm Reset (
ALrE
), is programmed for
Hold
, the alarm will automatically reset
after a power failure and on subsequent power restoration if no alarm condition is present.
If Set Point Inhibit (
S#iH)
or Alarm Inhibit (
ALiH
), is selected
ON
, an alarm condition is suspended upon
power up until the process value passes through the alarm set point once. Alarm inhibit can be restored
as if a power up took place by pressing both the
INDEX
and
ENTER
keys for 5 seconds.
Warning: Resetting a high set point inhibit will not cause an alarm to occur if the
Process Value does not first drop below the high set point value. Do not use the
Set Point Inhibit feature if a hazard is created by this action. Be sure to test all
combinations of high and low set point inhibit actions before placing control
into operation.
Summary of Contents for LOVE CONTROLS 32A Series
Page 45: ...Page 9 Timer Functions ...
