Status, Resetting, Open collector (solid state) output option – Omega Engineering DP3300 Series User Manual
Page 22: Alarm outputs
DP3300 Series User’s Manual
Page21
If the unit is setup as an RPM monitor then following steps are performed for setting up various parameters:
FUNCTION
DISPLAY SHOWS
TO CHANGE
Filter
value
1,2,4,6,10,15,20,30,60
Push
^v key to obtain desired value
Decimal point
dP 9999
Push ^v key to
placement
dP 999.9
move decimal
dP 99.99
point to desired
dP 9.999
position.
Scaler
'SCALER' followed by preset scaler
Push ^v key to increment or decrement
value e.g. 10.00024 with active digit
active digit. Push
flashing.
active digit.
Division Factor
'DIV FAC' followed by preset division
Push ^v key to increment or decrement
by preset division factor( e.g. 12`
active digit. Push
with active digit flashing).
change active digit.
Limit 1
'CH1 LT1' followed by preset Limit 1
Push ^v key to increment or decrement
Limit
2
value
e.g.
123.4 with active digit
active digit. Push
Limit
3
flashing.
active
digit.
For
limits
2
&3
CH1 LT2, CH1 LT3
NOTE: Limit3 is audio visual alarm only
followed by limit value.
--- it has no relay output.
Relay deadband
'dEAdbd' followed by deadband
Push ^v key to increment or decrement
value e.g. 0002
active
digit.
Push
next digit active.
Latching or non -
'LATCH' for latching mode.
Push ^v key to obtain alternate mode.
latching relay setup.
'NON LCH' for non latching mode.
Limit outputs prog-
LT1 N.O. or LT1 N.C
Use ^v key to obtain
rammed as normally
LT2 N.O. or LT2 N.C
alternate
mode.
open or closed
LT3 N.O. or LT2 N.C
ALARM OUTPUTS:
Status:
The system has optional process alarm outputs that are activated when limit is exceeded on any of the two channels. The alarms
can be programmed as normally open or normally closed (see SETUP) and latching or non-latching. The status of these alarms is
indicated on the front panel by LEDs. When ever an alarm is activated the respective LED is turned on. Each channel has two
outputs (relay or open collector) and one audio visual alarm. Audio visual alarm provides a visual indication on the front panel
(LED) and a buzzer output if a programmed limit value is exceeded. Buzzer can be turned off, if so desired (look under SETUP).
Resetting:
Once energized, alarms can be reset in two different ways --- automatically or manually (non latching or latching). In non-
latching mode, the alarm outputs will de-energize on their own when process variable drops below the limit value. In latching
mode, they stay energized even if the process variable drops below the limit. To reset the energized outputs in the latching mode,
first make the display indicate the limit that needs to be reset (e.g. "CH1 LT2"), by pushing the DATA key. Next, keeping the
DATA key pushed while limit value is displayed, go on to push the RESET key. The respective alarm output will de-energize
and the system will indicate so by displaying RLY RST.