Model LI1X Universal Process Meter
Instruction Manual
Model LI1X Universal Process Meter
Instruction Manual
26
Alarm Programming
Overview
The meter is equipped with four alarm points as a standard feature.
Each alarm may be programmed for either a high or low alarm and
for 0-100% deadband. Front panel LEDs indicate alarm status.
Options for two or four relays are available.
To program a high alarm, program the set point above the reset point.
To program a low alarm, program the set point below the reset point.
To program the alarm deadband, set the reset point above or below
the set point by an amount equal to the desired deadband value.
Example:
Alarm 2 is a high alarm that trips at 1500 and has a dead-
band of 100. Alarm 2 set point is set at 1500 and its reset point at
1400.
Setting Alarm Set & Reset Points (
Alars
)
Alarm Set and Reset points are programmed using the
Five Basic
Digit/Display-setting Instructions described on page 19.
1. Push
ENTER
and when
ALArS
appears, push
ENTER
again. This
starts a scan of the four alarm set & reset points. The scan
sequence begins with a flashing display of alarm #1 set point. The
"1" LED and "S" LED below the display are illuminated to indicate
the meter is flashing alarm #1 set point value. Program the desired
value for alarm #1 set point using the
Five Basic Digit/Display-
setting Instructions described on page 19.
2. After Alarm #1 set point has been programmed, the meter displays
Alarm #1 reset point, as indicated by the "1" LED and "R" LED
below the display. Program the desired value for alarm #1 reset
point using the
Five Basic Digit/Display-setting Instructions
described on page 19.
3. Program the remaining alarm set and reset points in a similar
fashion.
4. When alarm programming is complete the meter will display the
process input signal and the front panel LEDs will indicate alarm
status.
Isolated 4-20 mA Transmitter Output Programming (
ovtpvt
)
The Isolated 4-20 mA Transmitter Output option can be programmed
without a calibrator. This option can be calibrated so that a 4 mA out-
put is produced for any number displayed by the meter. The 20 mA
output may be programmed to correspond to any number that is at
least 501 counts greater or smaller than the number corresponding to
4 mA. (Ex. 4 mA = 0, 20 mA = 501 or -501) If the span between 4 and
20 mA is less than 501 counts, an
error
message will appear and the
previously programmed values will be retained in memory until a
new set of values is accepted.
Setting 4 mA Output Value
1. Push
ENTER
, when
ovtPvt
appears push
ENTER
again.
2. All digits flash for 3 seconds, a green LED labeled "4" illuminates
indicating the flashing display is the value at which the meter will
produce a 4 mA output. Program desired value per
Five Basic
Digit/Display-setting Instructions on page 19.
Setting 20 mA Output Value
1. When
ENTER
is pushed to complete the programming for 4 mA
output, the green LED labeled "20" illuminates indicating the
flashing display is the value at which the meter will produce a 20
mA output.
2. Program desired value per
Five Basic Digit/Display-setting
Instructions on page 19.
3. An Error message will be displayed if the 4-20 mA output span is
smaller than 501 counts.
Programming Confirmation
The values that have been programmed to produce the 4 & 20 mA
outputs can be quickly checked to make sure they are the desired val-
ues. To do this, enter the
ovtPvt
routine by pushing
ENTER
and then
pushing
ENTER
again when
ovtPvt
appears.
The green "4" LED illuminates indicating the meter is displaying the
value at which it will produce a 4 mA output. Confirm that this is the
desired value. Push
ENTER
(within 3 seconds) before the entire dis-
play stops flashing and the green "20" LED illuminates indicating the
meter is displaying the value at which it will produce a 20 mA output.
Confirm that this is the desired value. Push
ENTER
(within 3 seconds)
before the entire display stops flashing and the meter returns to indi-
cation mode.
27
Spec Tech Industrial Electric
www.spectechind.com
888-773-2832
Spec Tech Industrial Electric
www.spectechind.com
888-773-2832
