Dwyer LCR10 - Manual (Page 15)

April, 2003 Page 15 of 20 LCR10 IOM
3-2 Alarm Settings
Alarm setpoint values are selected by positioning the pen to the actual value on
the recording chart. Alarm settings can be changed or viewed after a CHART
CHANGE, recorder setup, or during initial power up. To set the alarm setpoint
during normal recording operation, complete the following steps.
Press and release the CHANGE CHART key ( 3 on Figure 3-1). Wait until the
pen moves off scale AND the LED stops fl ashing quickly and goes to a steady
on. Press and release the CHANGE CHART key ( 3 ) again. The pen will begin
to move back onto the chart briefl y stopping at (or close to) the outermost
graduation of the chart. The Green LED remains on steady during this time.
Single Alarm Setting
When the above operation is complete, the pen will move to the current alarm
setpoint position on the chart. The green LED will go out, during this time the
alarm setpoint can be adjusted using the LEFT arrow (1) or the RIGHT arrow (2)
keys on the keypad. Once the alarm setpoiont is set, wait for the green LED to
turn on. The pen will then move to indicate the input value and the unit will begin
normal recording operation.
Band Alarm Setting
When programming the recorder for operation, the pen will move fi rst to alarm
band 1 setpoint on the chart. The green LED will go out. The alarm band 1
setpoint can now be adjusted using the LEFT arrow (1) or the RIGHT arrow (2)
keys. Once set, wait for the green LED to turn on. The active pen will then move
to the second band alarm setpoint. The green LED will go out. The alarm band 2
setpoint can now be adjusted using the LEFT arrow (1) or the RIGHT arrow (2)
keys. When pen alarm setpoints adjustments are complete, wait for green LED to
turn on. The pen will then move to the current input value and recorder will begin
normal operation.
The “Change Chart” key is the “RESET” when the recorder is programmed
for latching alarm operation. Please note that the relay will only reset if alarm
condition has been cleared.